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747-400 MAINTENANCE MANUAL
3) Push the LSK that is adjacent to START TEST>.
NOTE: IN PROGRESS shows during the test.
____
4) Make sure the outboard ailerons go back to the neutral position in approximately 30 seconds.
NOTE: Approximately 1 minute after you start the test, the
____ actuators will unlock and return the outboard ailerons to full travel.
a) Use the flight controls maintenance page on the lower EICAS to make sure the two outboard aileron's positions are between 0.1 and 1.1 degrees down.
5) Return the control wheel to the neutral position.
(c) Push the LSK that is adjacent to START TEST>.
NOTE: IN PROGRESS shows during the test.
____
S 745-187
(9) When IN PROGRESS goes out of view, look for PASS or FAIL> adjacent to <AIL LO ACTUATORS.
NOTE: If a PASS indication shows, no failures occurred during the
____
test.
(a) If FAIL> shows: 1) Push the LSK that is adjacent to FAIL> to see the GROUND TEST MSG pages for the failure. 2) Push the NEXT PAGE key until you find all the GROUND TEST MSG pages. 3) Make a list of all CMCS messages, CMCS message numbers, and
ATA numbers that show on the GROUND TEST MSG pages. 4) Open and close these circuit breakers on the P7 panel:
NOTE: This is to make sure the right SRM controls the
____
actuators.
a) FLT CONT ELEC 2L AC (C10263) b) FLT CONT ELEC 2L DC (C10264) c) FLT CONT ELEC 1L AC (C8782) d) FLT CONT ELEC 1L DC (C8783)
5) Do the aileron lockout ground test a second time.
NOTE: Do not open and close FLT CONT ELEC 2R AC and FLT
____ CONT ELEC 2R DC circuit breakers when you do the ground test a second time.
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747-400 MAINTENANCE MANUAL
6) Go to the CMCS message index of the Fault Isolation Manual (FIM) to find the corrective action for each CMCS message.
NOTE: For CMC messages 27121, 27122, 27221 and 27222 the
____ information that follows applies: If both SRM's show a failed actuator, use the FIM corrective action. However, if only the right SRM shows a failed actuator (27221 or 27222), repair the applicable aileron lockout command wiring from the right SRM to the Left SRM.
E. Procedure 2 (Airplanes with Any Combination of SRM Part Numbers Installed)
S 845-054
(1)
Supply elecrical power (Ref 24-22-00/201).
S 715-055
(2)
Look for existing faults in the aileron lockout system
(AMM 45-10-00/201).
(a)
Select <EXISTING FAULTS from the CMC main menu.
(b)
Select <27 AILERON LOCKOUT from the existing faults menu.
(c)
Make sure there are no existing faults on the CDU.
(d)
Select <27 STABILIZER TRIM from the existing faults menu.
NOTE: If 27 AILERON LOCKOUT and 27 STABILIZER TRIM do not come
____ into view, there are no existing faults with the aileron lockout system.
(e) Make sure that these messages do not show on the CDU: 1) SRM-L FAIL (SRM-L) 2) SRM-R FAIL (SRM-L) 3) SRM-R > SRM-L DATA FAIL 4) SRM-R > SRM-L BUS FAIL 5) ADC-C > SRM-L DATA FAIL 6) SRM-L FAIL or ADC-C > SRM-L BUS FAIL 7) ADC-L > SRM-L DATA FAIL 8) SRM-L FAIL or ADC-L > SRM-L BUS FAIL 9) ADC-R > SRM-L DATA FAIL 10) SRM-L FAIL or ADC-R > SRM-L BUS FAIL 11) ADC DATA DISAGREE (SRM-L) 12) SRM-L CHANNEL CODE FAULT (SRM-L) 13) FCU-L FLAP SIGNAL > SRM-L INTERFACE FAIL 14) FCU-C FLAP SIGNAL > SRM-L INTERFACE FAIL 15) FCU-R FLAP SIGNAL > SRM-L INTERFACE FAIL 16) SECOND FCU FLAP INPUT FAIL (SRM-L) 17) SRM-R FAIL (SRM-R) 18) SRM-L FAIL (SRM-R) 19) SRM-L > SRM-R DATA FAIL 20) SRM-L > SRM-R BUS FAIL 21) ADC-C > SRM-R DATA FAIL
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