(i)
If the wingtips show signs of a lightning strike, make a careful examination of the wingtips, fuel vent outlet and surge tanks for signs of damage.
(5)
Do an operational test of the rudder if there are signs of lightning strike damage to the rudder or vertical stabilizer (AMM 27-21-0).
(6)
Do an operational test of the elevator if there are signs of lightning strike damage to the elevator or horizontal stabilizer (AMM 27-31-0).
(7)
Do an operational test of the ailerons if there are signs of lightning strike damage to the ailerons (AMM 27-11-0).
(8)
Do an operational test of the speed brakes if there are signs of lightning strike damage to the speed brake system (AMM 27-62-0).
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(9) 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 32-00-1).
(b)
Manually move the forward nose gear doors to make sure the mechanism operates smoothly (32-22-0).
(c)
Visually examine the nose gear door link mechanism for lightning strike damage.
(d)
Examine the nose door hinges for lightning strike damage.
(e)
Examine the nose gear door structure for lightning strike damage.
(f)
Make sure that the proximity switch electrical module gives the correct gear door position indication (AMM 32-09-100).
(g)
Make sure to engage the nose gear door lock when the examination is complete.
(10)
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 32-00-1).
(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 for lightning strike damage.
(f)
Make sure the proximity switch electrical module 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.
(11)
Do an operational test of the trailing edge flaps if there are signs of lightning strike damage to the trailing edge flaps (AMM 27-51-0).
(12)
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 27-81-0).
C. Examine the Static Dischargers
(1) Do the examinations that follow:
(a) Visually examine all dischargers to make sure they are in place, not broken and installed correctly on their mounting retainers.
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(b)
Examine the dischargers for damage as shown by a burned or rougher coating and pits in the metal discharger retainers.
(c)
Examine the dischargers for broken, bent, or blunt tungsten pins. 1) If bent pins are found, replace the discharger assembly. 2) If broken pins are found, replace the discharger assembly.
(d)
Look for deterioration of the discharger coating or damage to the tip cup.
1) Deterioration to the leading edge of the discharger must not extend back more than 1/3 of the width of the discharger.
(2) Do a resistance test if you find a damaged static discharger (AMM 23-61-0).
D. Airplane Internal Examination
(1)
If a lightning strike has caused a system malfunction, do a full examination of the defective system with the use of the applicable maintenance manual section for that system.
(2)
Do a check of the standby compass system only if the flight crew reported a very large compass deviation (AMM 34-24-0).
(3)
Make sure the fuel quantity system is accurate (AMM 28-41-0).
(a) Repair any identified problems.
E. Examine the Air Data Sensors
(1) Examine the air data sensors for signs of lightning strike damage.
(a)
Pitot Probes: Do an operational test of the pitot probes if there are signs of lightning strike damage to the pitot probes (AMM 34-11-11).
(b)
Static Ports: Do an operational test of the pitot static system if there are signs of lightning strike damage near the static port (AMM 34-11-0).
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