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 (5)  S 712-017Operate the fuel jettison valves (AMM 28-31-00/501). (a) Replace the fuel jettison valves if necessary.
 (6)  S 712-065Operate the fuel jettison nozzle valves (AMM 28-31-00/501). (a) Replace the fuel jettison nozzle valves if necessary.
 (7)  S 712-018Operate main tank transfer valves (AMM 28-16-04/401 Test Operation of Main Tank Transfer Valve). (a) Replace the main tank transfer valves if necessary.
 (8)  S 712-066Operate the reserve tank transfer valves (AMM 28-16-01/501). (a) Replace the reserve tank transfer valves if necessary.
 (9)  S 712-019Operate the APU fuel shutoff valve (AMM 28-25-00/501). (a) Replace the APU fuel shutoff valve if necessary.

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747-400 MAINTENANCE MANUAL
 C.  AC Generation System
 S 212-018
 (1)  If the lightning strike has caused only loss of power from a generator do these steps:
 NOTE: The equipment on the main ac distribution buses will
____ be operative when power is supplied from the other generators.
 WARNING: WHEN INSPECTING POSSIBLE DAMAGE IN THE WING LEADING EDGE
_______ AREAS, INSTALL LEADING EDGE FLAP SAFETY LOCKS BEFORE ENTERING AREA. REFER TO AMM 27-81-00/201 FOR LOCK INSTALLATION PROCEDURE. FLAPS WILL RETRACT IN 7 SECONDS. INSTALL LOCKS ON ALL EXTENDED LEADING EDGE FLAPS TO PREVENT INJURY FROM INADVERTENT FLAP OPERATION.
 (a)  Examine these items and related wires for possible lightning strike damage:
 NOTE: Replace or repair any component, related wiring or,
____ circuit breakers which are damaged.
 1) Generator Power Feeders (Leading Edge Flap Cavity) 2) Integrated Drive Generator (Engine Gear Box) 3) Generator Circuit Breakers (Main Power Centers) 4) Generator Control Units (Main Equipment Center) 5) Lightning Protectors (Main Power Centers)
 (b)
Examine the lightning protection circuit breakers.

 1)  Make sure the lightning protection circuit breakers are closed.

 (c)  
Do the Lightning Protector Adjustment/Test procedure (AMM 24-21-04/501).

 (d)  
Do the Generator and Bus Control Units Adjustment/Test procedure (AMM 24-23-01/501).

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747-400 MAINTENANCE MANUAL
 (e)  
Do the AC Generation Adjustment/Test procedure (AMM 24-20-00/501).

 (f)  
Do the Generator Drive System Adjustment/Test procedure (AMM 24-11-00/501).

 S 212-020
 (2)  If the lightning strike has caused loss of power from a generator and additional damage to the electrical distribution system, do these steps:
 NOTE: Equipment on one or more ac buses will be inoperative.
____
 (a)  
Complete all examinations and procedures in step 3.C.(1)(a) thru 3.C.(1)(c).

 (b)  
Examine these items and related wires for possible lightning strike damage:

 NOTE: Replace or repair any component, related wiring, or
____ circuit breakers which are damaged.
 1) Bus Tie Breakers (Main Power Centers) 2) Split System Breaker (P92 Panel)
 (c)  
Do the Generator and Bus Control Units Adjustment/Test procedure (AMM 24-23-01/501).

 (d)  
Do the AC Generation Adjustment/Test procedure (AMM 24-20-00/501).

 (e)  
Do the Generator Drive System Adjustment/Test procedure (AMM 24-11-00/501).

 D.  Examine the hydraulic parts in the compartment forward of the APU firewall (Fig. 202).
 S 012-043
 (1)  
Open the access door 315AL (AMM 06-09-05/201).

 S 212-044

 (2)  
Do a check of the hydraulic fittings as shown on Fig. 202 for leaks.

 (a)  Write down which hydraulic fittings leak.
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