747-400 AMM 飞机维护手册限制/维护检查(37)_航空信息_民用航空_通用航空

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5) You need to use instrumental NDI methods or tap tests to find composite structure damage you cannot see.
NOTE: Damage you cannot see, such as delamination,
____ can extend to the area you can see. Delamination can be detected by instrumental NDI methods or by a tap test. For a tap test, use a solid metal disk and tap the area adjacent to the damaged area lightly. If there is delamination, you will hear a sound that is different than the sound of a solid bonded area. Refer to Nondestructive Test Manual D6-7170.
S 212-113
(3) If the entrance and exit points are not found during the examination of Zones 1 and 2 areas, examine Zone 3 (Fig. 201) surface areas for signs of lightning strike damage.
(a) Do the examinations that follow: 1) Examine the external surfaces carefully to find the entrance and exit points of the lightning strike. 2) Make sure you look in the areas where one surface ends and another surface starts. 3) Examine the metallic structure for holes, pits, burned or discolored skin and rivets.
4) Examine external surfaces of composite components for discolored paint, burned, punctured, or delaminated skin plies.
5) You need to use instrumental NDI methods or tap tests to find composite structure damage you cannot see.
NOTE: Damage you cannot see, such as delamination, can
____ extend to the areas around the damaged area you can see. Delamination can be detected by instrumental NDI methods or by a tap test. For a tap test, use a solid metal disk and tap the area adjacent to the damaged area lightly. If there is delamination, you will hear a sound that is different that the sound of a solid bonded area. Refer to Nondestructive Test Manual D6-7170.
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S 212-112
(4) If you find lightning strike damage to aluminum coated composite panels, refer to SRM 51-70-14 for allowable damage, time limited repairs and permanent repair procedures.
CAUTION:_______MAKE SURE TO SEAL OR REPAIR ALL DAMAGE. FAILURE TO SEAL OR REPAIR DAMAGE CAN CAUSE MORE INTERNAL DAMAGE BECAUSE MOISTURE CAN GET IN AND FREEZE AT ALTITUDE.
(a) Repair or seal the damaged areas. See SRM 51-70-14.
S 712-095
(5)
Make sure the navigation lamps, rotary lights, and the landing lights operate.

S 212-096

(6)
Examine the flight control surfaces for signs of lightning strike damage.

(a) Do the examinations that follow:
1) If the rudder shows signs of a lightning strike, examine the hinges, bearings, and bonding jumpers for signs of damage.
2) If the elevators show signs of a lightning strike, examine the hinges, bearings, and bonding jumpers for signs of damage.
3) If the ailerons show signs of a lightning strike, examine the hinges, bearings, and bonding jumpers for signs of damage.
4) If the speed brakes show signs of a lightning strike, examine the hinges, bearings, and bonding jumpers for signs of damage.
5) If the main landing gear doors show signs of a lightning strike, examine the hinges, bearings, and bonding jumpers for signs of damage.
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6) If the trailing edge flaps show signs of a lightning strike, examine the flaps, flap support structure, and bearings, for signs of damage.
7) If the leading edge flaps/slats show signs of a lightning strike, examine the flaps, support linkages, and bearings for signs of damage.
(b)
Do an operational test of the rudder if the are signs of lightning strike damage to the rudder or vertical stabilizer (AMM 27-21-00).

(d)
Do an operational test of the ailerons if there are signs of lightning strike damage to the ailerons (AMM 27-11-00/501).
　
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