Service difficulty report · Actuator · Boeing 737924ER

Difficulty date
April 22, 2024
Submitted
April 24, 2024
Operation
Air carrier
Aircraft
N28478
Make and model
Boeing 737924ER
Aircraft serial
31649
Aircraft time
33,372 hours, 12,163 cycles
Part
Actuator
Part number
R5303M11
Condition
Inoperative
Location
Sppedbrake
Stage of operation
TO
How discovered
9
Nature of condition
F, G, J
Precautionary procedure
C

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

REJECTED TAKEOFF DUE SPEEDBRAKE DO NOT ARM LIGHT ON AT 95KTS NO TAKEOFF WARNING HORN PERFORMED FIM 32-42 TASK 801, 27-62 TASK 801 AND FIM 27-62 TASK ILLUMINATE. THIS IS A 2ND WRITE UP. REF LOG 7615172. REQUIRES SCHEDULING. REQUESTING MEL 2707F. 802, NO FAULTS FOUND ON AACU AND DS1/DS2 ON SPEED BRAKE MODULE FURTHER TROUBLSHOOTING. NO TIME TO FURTHER WORK DUE TO FLIGHT MEL 2707F DUE TO PREVIOUS HISTORY AND POSSIBLE CREW REFUSAL DUE TO REVERSER ALSO ON MEL. PLEASE FIX. LOCKED FOR POSITIVE FIX. PERFORMED FIM 27-62-TASK802 STEP E (INITIAL EVALUATION) (3) TROUBLESHOT PER SSM 27-62-11-102 AND FIM 27-62 TASK 802. FOUND ,TEST PASSED OK ,SYSTEM NEEDS FURTHER THROUBLE SHOOTING DUE TO SPEED BRAKE LEVER ACTUATOR M359 SHOWING BOTH EXTENDED AND HISTORY. RETRACTED INDICATIONS AT THE SAME TIME. NEEDS NEW M359 IN STOCK AT EWR. UNLOCKED LP FOR SIGNOFF. REMOVED AUTO SPEED BREAK ACTUATOR IAW AMM 27-62-31-000-801. ACTUATOR REQUIRES INSTALLATION WITH AMM 27-62-23-400-801. ADD EMP:406328 INSTALLED AUTO SPEEDBRAKE ACTUATOR PER AMM 27-62-23-400-801 OPS CHECK SATIS.