ATA 08 Weighing and Leveling PDF

MAINTENANCE TRAINING NOTES T1T2 42-400l500 & 72-212A (MPC) ref 72 V1.6 ATA 08 WEIGHING AND LEVELLING Date of issue 02/04/09 This publication will not be updated on a regular basis.  ATA...

MAINTENANCE TRAINING NOTES T1T2 42-400l500 & 72-212A (MPC) ref 72 V1.6 ATA 08 WEIGHING AND LEVELLING Date of issue 02/04/09 This publication will not be updated on a regular basis.  ATA 08 Weighing and levelling Page 2/ 9 Weighing and levelling V0801 Copyright © 2001-2008 - ATR Training Centre - All right reserved For Training Only ACOS v1.6  ATA 08 Weighing and levelling Page 3/ 9 WEIGHING METHODS Three Weighing technics can be used: ♦ Weighing on jack, ♦ Weighing on wheels, ♦ Weighing on jack and wheels. Prior to weighing: ♦ Defuel the tanks by suction and drained. ♦ During defueling, pitch and roll attitude must be at 0°. ♦ The remaining fuel quantity must be check in weight and balance manual (one table for each aircraft version). V0801 Copyright © 2001-2008 - ATR Training Centre - All right reserved For Training Only ACOS v1.6 ATA 08 Weighing and levelling Page 4/ 9 V0801 Copyright © 2001-2008 - ATR Training Centre - All right reserved For Training Only ACOS v1.6  ATA 08 Weighing and levelling Page 5/ 9 AIRCRAFT PREPARATION Place aircraft in a closed hangar. Equip with one clinometer, at level of cargo compartment door between frame 14 and frame17, for measuring aircraft pitch attitude = 0. The aircraft configuration must be as follows: ♦ Flaps retracted. ♦ Control surfaces and trim in neutral position. ♦ Spoilers retracted. ♦ All doors and exits closed. ♦ Blanking plates, protection and covers removed. ♦ No object workstand in contact with aircraft. Make out list of missing equipment: ♦ Hydraulic system is topped up. ♦ Engine oil replenishing has been accomplished. ♦ Replenish toilets with water and applicable materials. ♦ Top up with potable water system. ♦ Note tire characteristics. Clean aircraft to remove all trace of grease, dirt or water. CAUTION : do not weight wet or iced aircraft. V0801 Copyright © 2001-2008 - ATR Training Centre - All right reserved For Training Only ACOS v1.6  ATA 08 Weighing and levelling Page 6/ 9 WEIGHING ON JACK Jacking and load cell point location must be as follows: ♦ 1 or 2 on the nose. ♦ 1 for each wing. ♦ 1 safety stay on tail cone. Note : Load cell depend on ATR version. The maximum permissible load on each point is given in Job Instruction Card (reference n° 08-12-00). V0801 Copyright © 2001-2008 - ATR Training Centre - All right reserved For Training Only ACOS v1.6  ATA 08 Weighing and levelling Page 7/ 9 WEIGHING ON WHEELS The mechanical scales must be located as follows: ♦ 1 on the nose. ♦ 2 for the main gears. Note : Mechanical scales depend on ATR version. The three scales must have pans large enough to contain the landing gear tires. V0801 Copyright © 2001-2008 - ATR Training Centre - All right reserved For Training Only ACOS v1.6  ATA 08 Weighing and levelling Page 8/ 9 WEIGHING ON JACK AND WHEELS The mechanical scales and jacking point must be located as follows: ♦ 1 scale and 1 jack for the nose. Nose landing gear structure will be suspended by jack assy positioned on floor mechanical scale. ♦ 1 scale for main gears. Both main landing gear left and right tires will be positioned on same floor mechanical scale. Note: Mechanical scales depend on ATR version. The two scales must have pans large enough to contain the landing gear tires. The aircraft must be leveled at 0 attitude by lifting the nose gear structure. V0801 Copyright © 2001-2008 - ATR Training Centre - All right reserved For Training Only ACOS v1.6 ATA 08 Summary Page 9/ 9 ATA 08 WEIGHING AND LEVELLING Weighing and levelling 2 V0801 Copyright © 2001-2008 - ATR Training Centre - All right reserved For Training Only ACOS v1.6