(e)
Do an operational test of the speed brakes if there are signs of lightning strike damage to the speed brake system (AMM 27-62-00).
S 212-110
(7) Examine the wingtip.
(a) If the wingtip shows lightning strike damage, do a visual inspection of the fuel vent surge tanks. 1) Open the access panel for the affected surge tank
(AMM 28-11-03/401).
2) Do a visual inspection of the surge tank and the components in the tank. a) If damage is found, repair or replace the damaged
component. 3) Close the surge tank access panel (AMM 28-11-03/401).
S 212-111
(8) Examine the static dischargers.
(a) Visually examine all of the static dischargers. Make sure the static dischargers are securely mounted. Make sure that all of the static dischargers are not broken and all of the static dischargers are there.
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747-400 MAINTENANCE MANUAL
(b)
Examine the static dischargers for burns, roughened black conductive static discharger material, and pitted retainers.
(c)
Examine the static discharger for errosion of the static discharge material. Look at the tip cap for static discharge material which is not there.
NOTE: Leading edge erosion of static dischargers should not
____ extend back more than 1/3 the width of the discharger.
(d) If the static discharger is damaged, do a check of the static discharger resistance (AMM 23-61-00/201).
TASK 05-51-13-202-014
3. Examine Internal Components for Lightning Strike
________________________________________________
A. References
(1)
AMM 06-09-05/201, Body Section 48 Access Doors and Panels
(2)
AMM 24-11-00/501, Generator Drive System
(3)
AMM 24-20-00/501, AC Generation
(4)
AMM 24-21-04/501, Lightning Protector
(5)
AMM 24-23-01/501, Generator and Bus Control Units
(6)
AMM 27-81-00/201, Leading Edge Flap System
(7)
AMM 28-16-01/501, Reserve Tank Transfer Valve Actuator
(8)
AMM 28-16-04/401, Main Tank Transfer Valve Actuator
(9)
AMM 28-17-00/501, Horizontal Stabilizer Tank Transfer System
(10)
AMM 28-22-00/501, Engine Fuel Feed System
(11)
AMM 28-25-00/501, APU Fuel Feed System
(12)
AMM 28-31-00/501, Fuel Jettison System
(13)
AMM 28-41-00/501, Fuel Quantity Indicating System
(14)
AMM 29-11-00/201, Main Hydraulic Supply System
(15)
AMM 23-32-00/501, Passenger Entertainment System
(16)
AMM 34-21-00/501, Inertial Reference System
(17)
AMM 34-43-00/501, Weather Radar System
(18)
AMM 53-52-01/601, Nose Radome
(19)
Chapter 20 WDM (SWPM Standard Wiring Practices Manaual)
B. Fuel System
NOTE: Do these fuel system procedures before you refuel, defuel, or
____ transfer fuel. If there is pressure in the refuel/jettison manifold, fuel can spill from the jettison nozzles when the nozzle valves are opened.
S 732-015
(1) If the fuel quantity indicating system appears incorrect, do a check of the applicable tank units and compensator (AMM 28-41-00/501).
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(2) S 712-015Operate the horizontal stabilizer fuel isolation valves (AMM 28-17-00/501). (a) Replace the horizontal stabilizer fuel isolation valves if necessary.
(3) S 712-016Operate the engine fuel shutoff valves (AMM 28-22-00/501). (a) Replace the engine fuel shutoff valves if necessary.
(4) S 712-064Operate the engine fuel crossfeed valves (AMM 28-22-00/501). (a) Replace the engine crossfeed valves if necessary.
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