185-224

• Complete disassembly of complex hydraulic power valves constitutes an Appliance Major Repair.
• Overhauling pressure type carburetors, and pressure type fuel, oil, and hydraulic pumps is classified as Appliance Major Repair.
• Replacing pre-fabricated fuel lines is considered Preventive Maintenance.
• Replacing and servicing batteries falls under Preventive Maintenance.
• Replacing side windows, provided it doesn't affect the structure or operating systems (controls, electrical equipment), is Preventive Maintenance.
• A Parts Serviceable Tag (F12-015L) confirms the serviceability of a non-rotable part or consumable.
• A Temporary Removal Tag (F11-053L) identifies a part removed from an aircraft or NHA, indicating its origin and the remover, acting as a reference for completed inspection and maintenance before reinstallation on the same aircraft.
• An Unserviceable Identification Tag marks an article/part as unserviceable due to defects, damage, or involvement in incidents/accidents.
• A Condemned Property Tag is attached to units, components, or parts deemed unserviceable and/or beyond economical repair, indicating they have been scrapped or mutilated; it's also used to condemn M&TE.
• EWIS Target Group 5 includes qualified staff performing engineering or planning work on in-service aircraft, specifically personnel authorized to design mechanical/structural system installations, modifications, and repairs, or those who authorize maintenance tasks (Planner/Engineer).
• EWIS Target Group 6 includes service staff with duties near EWIS, bringing them into contact/view of aircraft wiring systems, such as aircraft service crew, cleaners, cargo loaders, fuelers, lavatory servicing personnel, de-icing personnel, and pushback personnel.
• Replacing elastic shock absorber cords on Landing Gear is Preventive Maintenance.
• Making simple repairs to fairings, non-structural cover plates, cowling, and small patches/reinforcements that don't alter the contour to interfere with airflow is Preventive Maintenance.
• Japan Civil Aviation Bureau Approved Organization No. 150 / EASA Part 145 is the Japan Civil Aeronautics Board Approval Number, allowing LTP to perform maintenance on JCAB aircraft.
• AMO Cert No. 2011-AMO-F02 / EASA Part 145 is the Korea Ministry of Land, Infrastructure and Tourism (MOLIT) Approval Number.
• MOA Cert. No. UK.145.01408 is the UK Civil Aviation Authority Approval Number.
• FAMO/2016/26/CAAM Part 145 is the Malaysia CAA Approval Number.
• LTP cannot release an aircraft engine or appliance in violation of an applicable AD's limitations and directives.
• A manufacturer intending to perform repairs and/or modifications on any aeronautical product must apply for an AMO Certificate under CAAP CAR Part 6.
• EASA Part 145 governs Maintenance Organization Approval.
• 14 CFR Part 39 covers Airworthiness Directives.
• 14 CFR Part 145 pertains to Repair Stations.
• EASA Part M addresses Continuing Airworthiness.
• EASA Part 21 covers Airworthiness and Environmental Certification.
• Making simple fabric patches not requiring rib stitching or removal of structural parts or control surfaces is Preventive Maintenance.
• Repairs involving material substitution are Airframe Major Repairs.
• A certificated repair station approved for that instrument class is authorized to repair aircraft instruments.
• Lightning strikes and bird strikes can be found in ATA Chapter 05 Time and Limits.
• EASA Part 66 relates to the Aircraft Maintenance License.
• All fabricated parts, except those with insufficient space, must be marked with P/N and LTP.
• Changes to empty weight or empty balance that increase the maximum certified weight or center of gravity limits of the aircraft are considered Airframe Major Modifications.
• Changes in governor or control design represent Propeller Major Modifications.
• Converting an engine to use fuel of a different rating or grade than specified is a Powerplant Major Modification.
• Splicing skin sheets is an Airframe Major Repair.
• Repairing parts of the control system, like control columns, pedals, shafts, brackets, or horns, is an Airframe Major Repair.
• Replacing defective safety wing and cotter pins is Preventive Maintenance.
• Replacing any hose connection, except hydraulic connections, is Preventive Maintenance.
• 14 CFR Part 43 addresses Major Alteration, Major Repair, and Preventive Maintenance.

Torque Calculation

• T1 = TA / A+B is the formula for calculating torque.
  • T = Desired torque value
  • A = Length of the torque wrench
  • B = Length of the adapter
  • T1 = Torque wrench dial reading (final torque)
• Replacement or adjustment of nonstructural standard fasteners incidental to operation is Preventive Maintenance.
• Installing anti-misfueling devices to reduce fuel tank filler opening diameter, provided the device is part of the aircraft's type certificate data with FAA-approved installation instructions and doesn't require disassembly of the existing filler opening, is Preventive Maintenance.