ATA 45 On Board Maintenance Systems Training Manual PDF

Fundamentals M13 AIRCRAFT AERODYNAMICS, STRUCTURES and SYSTEMS Rev.-ID: 1AUG2012 Author: WaH For Training Purposes Only ©L...

Fundamentals M13 AIRCRAFT AERODYNAMICS, STRUCTURES and SYSTEMS Rev.-ID: 1AUG2012 Author: WaH For Training Purposes Only ©LTT Release: Jul. 01, 2013 M13.10 On Board Maintenance Systems ATA 45 Diagnostic and Maintenance system EASA Part-66 CAT B2 M13.10 45 B2 E Training Manual For training purposes and internal use only. © Copyright by Lufthansa Technical Training (LTT). LTT is the owner of all rights to training documents and training software. Any use outside the training measures, especially reproduction and/or copying of training documents and software − also extracts there of − in any format at all (photocopying, using electronic systems or with the aid of other methods) is prohibited. Passing on training material and training software to third parties for the purpose of reproduction and/or copying is prohibited without the express written consent of LTT. Copyright endorsements, trademarks or brands may not be removed. A tape or video recording of training courses or similar services is only permissible with the written consent of LTT. In other respects, legal requirements, especially under copyright and criminal law, apply. Lufthansa Technical Training Dept HAM US Lufthansa Base Hamburg Weg beim Jäger 193 22335 Hamburg Germany Tel: +49 (0)40 5070 2520 Fax: +49 (0)40 5070 4746 E-Mail: [email protected] www.Lufthansa-Technical-Training.com Revision Identification: The date given in the column ”Revision” on the face of Dates and author’s ID, which may be given at the base The LTT production process ensures that the Training this cover is binding for the complete Training Manual. of the individual pages, are for information about the Manual contains a complete set of all necessary pages latest revision of that page(s) only. in the latest finalized revision. Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 M13 AIRCRAFT, AERODYNAMICS, STRUCTURE AND SYSTEMS M13.10 ON BOARD MAINTENANCE SYSTEMS (ATA 45) FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH Jun 25, 2013 ATA DOC Page 1 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 CMC SYSTEM ARCHITECTURE Introduction to CMCS When the mechanic receives the pilot’s complaint, it should be possible to start trouble shooting to locate the source of the failure in an economical way. On old generation aircraft, you need to know many different methods of troubleshooting. For instance, each system test is performed with an individual switch either located on a cockpit panel or on the frontside of different computers and in different locations with specific methods of test result presentation. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 01|Introduction|L1|A/B1/B2 Page 2 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 FOR TRAINING PURPOSES ONLY! Figure 1 Location of the System Test Switches HAM US/O-5 WaH 01.01.2013 01|Introduction|L1|A/B1/B2 Page 3 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Introduction to CMCS cont. Modern aircraft have a central maintenance computer system or CMCS. The CMCS provides a central location in the cockpit for trouble shooting with standardized methods of testing and fault reporting. The central maintenance computer system consist of: ▪ 1 or 2 central maintenance computers or CMC located in the avionic compartment, ▪ 2 or 3 Multipurpose Control and Display Units or MCDU in the cockpit as the main interface between the operator and the system, ▪ A printer in the cockpit for hardcopies of the information, ▪ A connection to the datalink system called ACARS for transmission of the information to the homebase, ▪ And a digital computer in each aircraft system which is connected to the CMC in order to provide the troubleshooting information. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 01|Introduction|L1|A/B1/B2 Page 4 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Up to 3 MCDUs Printer Data Link FOR TRAINING PURPOSES ONLY! Central Maintenance Computer (CMC) Figure 2 Components of a CMC HAM US/O-5 WaH 01.01.2013 01|Introduction|L1|A/B1/B2 Page 5 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Introduction to CMCS The aircraft systems that are connected to the CMC are those made up of many components. These systems need a computer to manage their normal operation and it is often difficult to locate a failure source in them. Typical examples of such systems are: ▪ The engine control system, ▪ All types of avionic equipment such as navigation, communication, instruments and auto flight systems, ▪ The fuel system, ▪ The landing gear and brake system, ▪ And the flight control system. The total number of complex systems that are connected to the CMC varies from aircraft to aircraft but ranges from 50 to more than 100. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 01|Introduction|L1|A/B1/B2 Page 6 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Up to 3 MCDUs Printer Data Link FOR TRAINING PURPOSES ONLY! Central Maintenance Computer (CMC) Figure 3 CMC Schematic HAM US/O-5 WaH 01.01.2013 01|Introduction|L1|A/B1/B2 Page 7 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 CMCS Functions The CMCS has 2 modes of operation. The modes are called: Reporting mode and Interactive mode. In the reporting mode, the CMC scans all of the aircraft systems that are connected to it. As it does this, the CMC memorizes the transmitted fault information. This memorized fault information can be read at anytime by use of the MCDU or a printout from the printer. It can also be sent to the home base via the datalink system. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 02|Functions|L1|A/B1/B2 Page 8 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Up to 3 MCDUs Printer Data Link FOR TRAINING PURPOSES ONLY! Central Maintenance Computer (CMC) Figure 4 Reporting Mode HAM US/O-5 WaH 01.01.2013 02|Functions|L1|A/B1/B2 Page 9 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 CMCS Functions cont. The interactive mode can be selected only on the ground and is mainly used for system tests. To start the interactive mode ▪ Select 1 aircraft system from the MCDU, ▪ Followed by a test start signal to the selected system that now performs the test ▪ Finally, the aircraft system sends back the test results. These results can then be read on the MCDU or on the printout from the printer or it can be sent via the datalink to the home base. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 02|Functions|L1|A/B1/B2 Page 10 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Up to 3 MCDUs Printer Data Link FOR TRAINING PURPOSES ONLY! Central Maintenance Computer (CMC) Figure 5 Interactive Mode HAM US/O-5 WaH 01.01.2013 02|Functions|L1|A/B1/B2 Page 11 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 CMCS Functions cont. The CMC communicates with the computers of the aircraft systems via a specialized portion of the computers called the BITE. BITE stands for Built In Test Equipment. The BITE is located inside each aircraft system computer but is completely independent from its operational part. The BITE has 2 functions: ▪ The first to detect failures and ▪ The second to perform tests on the ground. The first of these functions to detect failures, occurs during the normal operation of the system. It identifies the most probable cause of the failure and sends this to the CMC. The second function of the BITE, to perform system tests, only occurs when the aircraft is on the ground. The test happens automatically when electrical power is switched on - This is the power up test. The same test and sometimes additional tests can be started manually from the CMC. The test FOR TRAINING PURPOSES ONLY! result is then sent to the CMC. HAM US/O-5 WaH 01.01.2013 02|Functions|L1|A/B1/B2 Page 12 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 1. Function Most Probable Up to 3 Cause MCDUs Electrical Printer Power On 2. Function Data Link Test Start Typical Aircraft Systems FOR TRAINING PURPOSES ONLY! Central Maintenance Computer (CMC) Test Result Figure 6 BITE HAM US/O-5 WaH 01.01.2013 02|Functions|L1|A/B1/B2 Page 13 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 CMCS Redundancy As you will remember, in the reporting mode, information from the various BITEs is stored in the memory of the CMC. To be able to read this information after the flight the CMC must be operational. However, if the CMC fails during flight, this would have a major influence on the maintenance activities. It would not be possible to read data or perform tests from the MCDU. Therefore, the CMCS must have a redundancy. This is completely fulfilled with a second standby CMC. This identical CMC receives the same input data and the output becomes active automatically when the normal CMC fails. On some aircraft, the standby CMC can be activated by pressing a control pushbutton even if the normal CMC is working. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 03|Redundancy|L2|B1/B2 Page 14 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Up to 3 MCDUs Printer CMC #2 Data Link FOR TRAINING PURPOSES ONLY! Central Maintenance Computer (CMC) #1 Figure 7 CMCS Redundancy HAM US/O-5 WaH 01.01.2013 03|Redundancy|L2|B1/B2 Page 15 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 CMCS Redundancy cont. Redundancy is also possible via a backup channel on the CMC but this is limited to the interactive mode only. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 03|Redundancy|L2|B1/B2 Page 16 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Central Maintenance Up to 3 Computer (CMC) MCDUs Printer Data Link FOR TRAINING PURPOSES ONLY! System Aircraft Selection on Ground Figure 8 CMC Backup Channel HAM US/O-5 WaH 01.01.2013 03|Redundancy|L2|B1/B2 Page 17 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 MCDU Basics We saw that the MCDU is the main interface to the CMCS. Now lets discuss some basic information about the MCDU. We will use an A340 MCDU as an example. The MCDU consist of: ▪ A Control Area With Many Push Buttons And 1 Control Knob, ▪ A Display Area Which Uses Either A Color Or Monochrome CRT Or TFT Display And ▪ Several Annunciator Lights To Provide Information To The Operator. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 04|MCDU Basics|L1|A/B1/B2 Page 18 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Annunciators Brightness Controls Control Knob Annunciators FOR TRAINING PURPOSES ONLY! Display Figure 9 Components of a MCDU HAM US/O-5 WaH 01.01.2013 04|MCDU Basics|L1|A/B1/B2 Page 19 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 MCDU Basics cont. The MCDU is used mainly during flight to control the flight management system. Many of the control pushbuttons and annunciators are only used for that function and will not be discussed here. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 04|MCDU Basics|L1|A/B1/B2 Page 20 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 FMS Annunciators FMS Control Pushbutton FOR TRAINING PURPOSES ONLY! FMS Annunciators Figure 10 MCDU II HAM US/O-5 WaH 01.01.2013 04|MCDU Basics|L1|A/B1/B2 Page 21 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 MCDU Basics cont. The only annunciator that is important for CMC use is the FAIL annunciator. It shows you that this MCDU is defective and that you must use another one. The MCDU MENU annunciator is also not used for CMC operation and its function will therefore not be discussed here. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 04|MCDU Basics|L1|A/B1/B2 Page 22 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Fail Annunciator FOR TRAINING PURPOSES ONLY! MCDU Menu Annunciator Figure 11 MCDU III HAM US/O-5 WaH 01.01.2013 04|MCDU Basics|L1|A/B1/B2 Page 23 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 MCDU Basics cont. The brightness control knob switches the MCDU on or off. Normally a flight management system display page appears when the display is first switched on. This knob also allows adjustment of the display brightness. Note that on some types of MCDU it is not possible to switch the display completely OFF but only to decrease it in brightness. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 04|MCDU Basics|L1|A/B1/B2 Page 24 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Brightness Control Knob FOR TRAINING PURPOSES ONLY! Figure 12 Brightness Control Knob HAM US/O-5 WaH 01.01.2013 04|MCDU Basics|L1|A/B1/B2 Page 25 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 MCDU CMCs Data After pressing the MCDU MENU pushbutton the MCDU MENU shows the systems which are connected to the MCDU. Different systems can be selected and you can read their abbreviations on the display. ▪ FM (FMC) stands for Flight Management, which is the system normally selected during flight. ▪ ACARS stands for Aircraft Communication, Addressing and Reporting system. This is the datalink system that can also be used for the CMCS. ▪ ACMS stands for Aircraft Condition Monitoring System and provides information about the engine, APU and certain system condition. ▪ CMS (CMC) is the A340 abbreviation for the CMCS and stands for Central Maintenance System. A symbol, called the prompt, is shown adjacent to a system or function that can be selected and this prompt points to a pushbutton called a. Line Select Key (LSK). The line select key is pressed to select the required function. There are a total of 12 line select keys called 1L to 6L and 1R to 6R. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 05|MCDU CMCs Data|L1|A/B1/B2 Page 26 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Left Line Select Keys Right Line Select Keys Right Left Line Line Select Select Keys Keys FOR TRAINING PURPOSES ONLY! Figure 13 MCDU MENU HAM US/O-5 WaH 01.01.2013 05|MCDU CMCs Data|L1|A/B1/B2 Page 27 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 MCDU CMCs Data cont. On the lowest display line you can read the SELECT DESIRED SYSTEM message. This shows that you have the choice to select the system you want to use. When you press the line select key 4 Left that will activate the CMS function you can see the CMCS maintenance menu. As you can see, this allows the selection of the different CMC functions. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 05|MCDU CMCs Data|L1|A/B1/B2 Page 28 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 FOR TRAINING PURPOSES ONLY! Figure 14 MCDU MENU HAM US/O-5 WaH 01.01.2013 05|MCDU CMCs Data|L1|A/B1/B2 Page 29 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 MCDU Display and Data Entry The display screen consists of 14 lines with a maximum of 24 characters in each. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 06|MCDU Display|L1|A/B1/B2 Page 30 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Characters 1 to 24 Display Lines 1 to 14 FOR TRAINING PURPOSES ONLY! Figure 15 MCDU Display I HAM US/O-5 WaH 01.01.2013 06|MCDU Display|L1|A/B1/B2 Page 31 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 MCDU Display and Data Entry cont. The top line is called the title line and shows the title of the selected display. Below the title line are 12 data lines. The data lines are arranged in 6 pairs with a label line in small fonts at the top and a data line in large fonts below it. Each data line has a right and left line select key. The bottom line is called the scratchpad or message line. In this line the MCDU gives messages to the operator such as ”select desired system” which we have seen already. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 06|MCDU Display|L1|A/B1/B2 Page 32 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Title Lines Lable Lines Data Lines 12 Data Lines Scratchpad FOR TRAINING PURPOSES ONLY! Figure 16 MCDU Display II HAM US/O-5 WaH 01.01.2013 06|MCDU Display|L1|A/B1/B2 Page 33 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 MCDU Display and Data Entry cont. The scratchpad is also used to enter alpha numeric data into the data lines. This is always necessary if boxes appear in the data line. To enter data, type the necessary alpha numeric keys. The typed data appears in the scratchpad. You must then press the LS key adjacent to the boxes, the data is then transferred from the scratchpad to the data field. Sometimes when you press the line select key the data entry is not accepted. This occurs if the data that you have typed is too long to fit into the boxed data field or exceeds an allowed value. In this case press the CLEAR pushbutton on the alpha numeric keyboard and start data entry again. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 06|MCDU Display|L1|A/B1/B2 Page 34 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 FOR TRAINING PURPOSES ONLY! Figure 17 MCDU Data Entry HAM US/O-5 WaH 01.01.2013 06|MCDU Display|L1|A/B1/B2 Page 35 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 MCDU Pages Another piece of information that you must be able to recognize on the MCDU is the page number on the title line. This page number is always shown if the information for the selected title does not fit onto 1 display screen. In this case the information is divided into several screens, called pages. The first digit is the number of the displayed page, and the second digit shows the total number of pages which belong to the same title. Two page control keys are used to switch from page to page. One is the ”next page key” shown by a down arrow and the other the ”previous page key” shown by an up arrow. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 07|MCDU Pages|L1|A/B1/B2 Page 36 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Next Previous Clockwise Counter Clockwise FOR TRAINING PURPOSES ONLY! Figure 18 Page Control HAM US/O-5 WaH 01.01.2013 07|MCDU Pages|L1|A/B1/B2 Page 37 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 MCDU Pages cont. Note that page control on the 747−400 MCDU follows the same rules but the keys are clearly labelled with NEXT PAGE and PREVIOUS PAGE. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 07|MCDU Pages|L1|A/B1/B2 Page 38 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Next Previous Clockwise Counter Clockwise FOR TRAINING PURPOSES ONLY! Figure 19 747 MCDU HAM US/O-5 WaH 01.01.2013 07|MCDU Pages|L1|A/B1/B2 Page 39 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 MCDU Pages cont. The A320 MCDU has only 1 page key that allows forward paging only. Therefore, on the title line only an arrow appears if paging is necessary to get to all information. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 07|MCDU Pages|L1|A/B1/B2 Page 40 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Next Clockwise FOR TRAINING PURPOSES ONLY! Figure 20 A 320 MCDU HAM US/O-5 WaH 01.01.2013 07|MCDU Pages|L1|A/B1/B2 Page 41 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 MCDU Pages cont. There is 1 other feature that makes paging easier and that is the RETURN function. When the line select key adjacent to RETURN is pressed, the display switches back to the previous menu page. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 07|MCDU Pages|L1|A/B1/B2 Page 42 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 FOR TRAINING PURPOSES ONLY! Figure 21 RETURN Function HAM US/O-5 WaH 01.01.2013 07|MCDU Pages|L1|A/B1/B2 Page 43 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 CMCS Report Functions 1 As we have seen, the main interface to the CMCS is the MCDU. CMCS data can also be reported by using 2 other interface functions: Hardcopy from a printer and With the data link system called ACARS to the home base. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 08|Functions1|L1|A/B1/B2 Page 44 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Up to 3 MCDUs Printer Data Link FOR TRAINING PURPOSES ONLY! Central Maintenance Computer (CMC) Figure 22 CMC Interfaces HAM US/O-5 WaH 01.01.2013 08|Functions1|L1|A/B1/B2 Page 45 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 CMCS Report Functions 1 cont. After selecting the REPORT MENU on a 747-400 MCDU you have the choice of the 2 report functions PRINT or ACARS. PRINT starts the printout. Note the IN PROGRESS message on label line 1 above the PRINTER message. During the printing, you have the opportunity to abort the printing by pressing line select key 1R. Once the printing has finished, the message above PRINTER changes to REPORT COMPLETE. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 08|Functions1|L1|A/B1/B2 Page 46 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 FOR TRAINING PURPOSES ONLY! Figure 23 747 Report HAM US/O-5 WaH 01.01.2013 08|Functions1|L1|A/B1/B2 Page 47 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 CMCS Report Functions 1 cont. The message NO RESPONSE appears if the printer is not working or is out of paper or is in use by another system. In this case you must either wait or service the printer. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 08|Functions1|L1|A/B1/B2 Page 48 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 FOR TRAINING PURPOSES ONLY! Figure 24 No Response HAM US/O-5 WaH 01.01.2013 08|Functions1|L1|A/B1/B2 Page 49 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 CMCS Report Functions 1 cont. The same procedures are used when a report is sent by ACARS to the home base. On the graphic you can now see how an ACARS data link is shown on the 747-400 MCDU. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 08|Functions1|L1|A/B1/B2 Page 50 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 FOR TRAINING PURPOSES ONLY! Figure 25 ACARS Data Link HAM US/O-5 WaH 01.01.2013 08|Functions1|L1|A/B1/B2 Page 51 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 CMCS Report Functions 2 Here is another example of CMCS report functions using a different type of MCDU. The process is similar but the selection is different. This A340 MCDU display shows a PRINT message to the right of the reports that can be printed. An asterisk marks the line select key that has to be pressed to start the printout. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 08|Functions1|L1|A/B1/B2 Page 52 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 FOR TRAINING PURPOSES ONLY! Figure 26 Printout Function HAM US/O-5 WaH 01.01.2013 08|Functions1|L1|A/B1/B2 Page 53 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 CMCS Report Functions 2 cont. If a print message is not displayed on a data line, this means that the whole report cannot be printed in 1 step. However, each individual displayed page of the selected report can be printed. Note, that the Airbus system always uses the asterisk symbol to show if a function such as printout or test can be started. The prompt symbol is used only to change the displayed page. Notice that the asterisk symbol disappears when the printout of the report is in progress and also if the printer is faulty or if the printer is in use by a another aircraft system. This means that a printout is only possible when the asterisk is displayed. When the printout is ready, the asterisk reappears showing that a new printout can be started. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 08|Functions1|L1|A/B1/B2 Page 54 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 FOR TRAINING PURPOSES ONLY! Figure 27 Page Printout HAM US/O-5 WaH 01.01.2013 08|Functions1|L1|A/B1/B2 Page 55 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 CMCS Report Functions 2 cont. In order to perform a transmission via the data link from the aircraft to the home base, the SEND function must be selected first. To do this, you must follow the scratchpad message and press the arrow. The send message is then replacing the print message. This means that the send function can be activated in the same way as the print function. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 08|Functions1|L1|A/B1/B2 Page 56 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 FOR TRAINING PURPOSES ONLY! Figure 28 SEND Function HAM US/O-5 WaH 01.01.2013 08|Functions1|L1|A/B1/B2 Page 57 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 A 380 OMS General The Onboard Maintenance System (OMS) is designed to support line and hangar maintenance activities, and engineering follow−up. The OMS is mainly composed of three sub−systems: The Central Maintenance System (CMS) The Data Loading and Configuration System (DLCS) The Aircraft Condition Monitoring System (ACMS) FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH/WeR 15.02.2013 10|A380 OMS|L3|B2 Page 58 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 FOR TRAINING PURPOSES ONLY! Figure 29 A 380 OMS HAM US/O-5 WaH/WeR 15.02.2013 10|A380 OMS|L3|B2 Page 59 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 CENTRAL MAINTENANCE SYSTEM PRESENTATION CMS Functions The CMS operates in two modes, a normal mode and an interactive mode. The functions done in normal mode are, the: Systems continuous monitoring, Failure, identification and correlation Centralization of failures events and parameters sent by the bites Report generation The interactive mode basically enables: Access To Elogbook, Airn@v And MEL Interactive System Tests Access To System Monitoring Access To Maintenance History The interactive mode only operates on ground, and always requires an operator action. Note that all the A/C systems, which have an internal BITE function, are monitored by the CMS. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH/WeR 15.01.2013 11|A380 CMS|L3|B2 Page 60 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 FOR TRAINING PURPOSES ONLY! Figure 30 A 380 CMS HAM US/O-5 WaH/WeR 15.01.2013 11|A380 CMS|L3|B2 Page 61 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 CMC SYSTEM OPERATION Report from Last Flight We will have a look at the CMC operation by using the A340 as an example. A very important item of the reporting mode is the report from the last flight leg, here called the ”Post Flight Report”. On this example of a post flight report page, 1 fault is presented from the last flight. As you can see, it is a fault of the flap system number 1. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 01|ReportfromlastFlight|L2|B1/B2 Page 62 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 FOR TRAINING PURPOSES ONLY! Figure 31 Report from last Flight HAM US/O-5 WaH 01.01.2013 01|ReportfromlastFlight|L2|B1/B2 Page 63 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Report from Last Flight cont. When a system fault occurs, like a sensor failure, it is detected by the system computer. The computer sends the fault information to the Central Warning System which then triggers a message on the display unit to inform the pilot. This message will normally be entered by the pilot into the technical log book. The same information along with the time and date is memorized by the CMC as the cockpit effect and the cockpit effect can be read on the first page of the post flight report. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 01|ReportfromlastFlight|L2|B1/B2 Page 64 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Time Date All Other Systems FOR TRAINING PURPOSES ONLY! Typical Aircraft Systems Central Warning System Computer Figure 32 Report from last Flight II HAM US/O-5 WaH 01.01.2013 01|ReportfromlastFlight|L2|B1/B2 Page 65 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Report from Last Flight cont. For maintenance it is now important to get the information about the failure source of this cockpit effect. The fault message presents the most probable cause of the fault. Normally a Line Replaceable Unit (LRU) is named and its equipment code along with the ATA chapter of the removal and installation procedure in the maintenance manual. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 01|ReportfromlastFlight|L2|B1/B2 Page 66 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 FOR TRAINING PURPOSES ONLY! Figure 33 Fault Message HAM US/O-5 WaH 01.01.2013 01|ReportfromlastFlight|L2|B1/B2 Page 67 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Report from Last Flight cont. For fault message creation the BITE of the system computer, in this example the Slat Flap Control Computer (SFCC) analyses the fault and the BITE sends the most probable cause to the CMC. The CMC memorizes the fault along with the time and date. This information is then displayed on the fault message page of the post flight report. The name of the system computer that performs the failure analysis is shown as the data source on the MCDU page. This makes it easier to find the correct system test that has to be performed to confirm the failure. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 01|ReportfromlastFlight|L2|B1/B2 Page 68 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Time Date All Other Systems FOR TRAINING PURPOSES ONLY! Typical Aircraft Systems Central Warning System Computer Figure 34 Fault Message Creation HAM US/O-5 WaH 01.01.2013 01|ReportfromlastFlight|L2|B1/B2 Page 69 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Report from Last Flight cont. To be sure that the cockpit effect and the fault message belong together you must check that the time and date, and the ATA chapter and subchapter are the same. This process is called correlation and is performed automatically by modern central maintenance computers using the same criteria. But correlation should always be checked and on some systems you must even perform it manually. How could you confirm that a recorded fault is the cause of a 'COCKPIT EFFECT'? Correlation of Time, Date & ATA Chapter. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 01|ReportfromlastFlight|L2|B1/B2 Page 70 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Time Date All Other Systems FOR TRAINING PURPOSES ONLY! Typical Aircraft Systems Central Warning System Computer Figure 35 Correlation HAM US/O-5 WaH 01.01.2013 01|ReportfromlastFlight|L2|B1/B2 Page 71 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Additional Information We will have a look at an example of an automatic correlation on the printout of the post flight report from the A340. Here you can make a comparison of the content of the display image with the printout. The content of the cockpit effect on the left part of the printout is identical to the upper display image and the fault message on the right part of the printout corresponds to the lower display. The time and flight phase is presented in the middle because it is identical for both sets of information. The printout is the best entry tool for trouble shooting because of this optimal arrangement of information. An additional advantage is that the printout is automatically FOR TRAINING PURPOSES ONLY! available at the end of the flight at engine shutdown. It often happens that fault messages are reported which have no corresponding cockpit effect. In our example this results in the left part of the printout being blank. HAM US/O-5 WaH 01.01.2013 02|AddInfo|L2|B1/B2 Page 72 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 FOR TRAINING PURPOSES ONLY! Figure 36 Printout HAM US/O-5 WaH 01.01.2013 02|AddInfo|L2|B1/B2 Page 73 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Additional Information cont. The memorization of faults starts at the beginning of the flight, which is defined as 3 minutes after engine start. The fault memorization stops when the flight is terminated during the taxiing. This means that when the aircraft is on the ground, no faults are memorized in the post flight report. Flight phase information shows when the failure occurred, in this example flight phase 6 which is the cruise. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 02|AddInfo|L2|B1/B2 Page 74 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Next Flight Post Flight Leg FOR TRAINING PURPOSES ONLY! Figure 37 Flight Phases HAM US/O-5 WaH 01.01.2013 02|AddInfo|L2|B1/B2 Page 75 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Additional Information cont. Finally, you can read the type of failure. ▪ A hard failure is a permanent failure and ▪ An intermittent failure occurs once or several times during a flight but is not reported after landing. For this type of failure, you can expect that the system test on the ground will not find the failure (Does not appear in the post flight report) FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 02|AddInfo|L2|B1/B2 Page 76 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 FOR TRAINING PURPOSES ONLY! Figure 38 Type of Failure HAM US/O-5 WaH 01.01.2013 02|AddInfo|L2|B1/B2 Page 77 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Additional Information cont. At the start of the next flight, the memory from the last flight must be erased. To do this, data is moved from the last flight memory into a history memory. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 02|AddInfo|L2|B1/B2 Page 78 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Time Date MCDU Printer Data Link CMC Typical Aircraft Systems FOR TRAINING PURPOSES ONLY! Next Flight Post Flight Leg Figure 39 Report Memory HAM US/O-5 WaH 01.01.2013 02|AddInfo|L2|B1/B2 Page 79 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 History Report You can see this information from the history in the previous leg reports. In the previous leg report you get a list of all flights with reported faults, in this case on 4 different pages. The presentation of the previous leg report has the same layout as the post flight report. This means that no fault history data is lost for up to a maximum of 63 previous flights. FOR TRAINING PURPOSES ONLY! HAM US/O-5 WaH 01.01.2013 03|HistoryRep|L2|B1/B2 Page 80 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 FOR TRAINING PURPOSES ONLY! Figure 40 Previous Leg Report HAM US/O-5 WaH 01.01.2013 03|HistoryRep|L2|B1/B2 Page 81 Lufthansa Technical Training AIRCRAFT SYSTEMS EASA PART-66 M11A|M13 ON BOARD MAINT. SYSTEMS (ATA45) M11.18|M13.10 Ground Report For CMC operation on the ground, the reporting mode is continued as long as the interactive mode is not selected.