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05-51-19
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A
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MAINTENANCE MANUAL
S 212-053
(7) 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 surface hinges, bearings, and bonding jumpers for signs of damage.
2) If the elevators show signs of a lightning strike, examine the surface hinges, bearings, and bonding jumpers for signs of damage.
3) If the ailerons show signs of a lightning strike, examine the surface hinges, bearings, and bonding jumpers for signs of damage.
4) If the speed brakes show signs of a lightning strike, examine the surface hinges, bearings, and bonding jumpers for signs of damage.
5) If the trailing edge flaps show signs of a lightning strike, examine the surface hinges, bearings, and bonding jumpers for signs of damage.
6) If the leading edge flaps/slats show signs of a lightning strike, examine the surface hinges, bearings, and bonding jumpers for signs of damage.
(b) Do the following operational tests, if the above examinations show signs of damage: 1) Do an operational test of the rudder if there are signs of
lightning strike damage to the rudder or vertical
stabilizer (AMM 27-21-00).
2) Do an operational test of the elevator if there are signs of lightning strike damage to the elevator or horizontal stabilizer (AMM 27-31-00).
3) Do an operational test of the ailerons if there are signs of lightning strike damage to the ailerons (AMM 27-11-00).
4) 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).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
05-51-19
ALL ú ú 01 Page 207 ú May 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
5) Do an operational test of the trailing edge flaps if there are signs of lightning strike damage to the trailing edge flaps (AMM 27-51-00).
6) Do an operational test of the leading edge flap/slats if there are signs of lightning strike damage to the trailing edge flap/slats (AMM 27-81-00).
S 712-047
(8) If there are signs of lightning strike damage to the nose gear doors, do the steps that follow:
(a)
Disengage the nose gear door locks (AMM 32-00-15).
(b)
Manually move the forward nose gear doors to make sure the mechanism operates smoothly (32-15-00).
(c)
Visually examine the nose gear door link mechanism for lightning strike damage.
(d)
Examine the nose door hinges, bearings, and bonding jumpers for lightning strike damage.
(e)
Examine the nose gear door structure for lightning strike damage.
(f)
Make sure that the proximity switch electronic unit gives the correct gear door position indication (AMM 32-09-03).
(g)
Make sure to engage the nose gear door lock when the
examination is complete.
S 712-048
(9) If there are signs of lightning strike damage to main landing gear doors, do the steps that follow:
(a)
Disengage the main gear door locks before manually moving the main gear doors (AMM 32-00-15).
(b)
Manually close the main gear doors to make sure the link mechanism operates smoothly (AMM 32-00-15).
(c)
Visually examine the main gear doors for lightning strike damage.
(d)
Visually examine the main gear door linkage mechanism for lightning strike damage.
(e)
Visually examine the main gear door hinges , bearings, and bonding jumpers for lightning strike damage.
(f)
Make sure the proximity switch electronic unit gives the correct indication for the door position.
(g)
Make sure to engage the main gear door lock when the landing gear door examination is completed.
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