Service difficulty report · Actuator · Boeing 7878

Difficulty date
July 13, 2022
Submitted
July 13, 2022
Operation
Air carrier
Aircraft
N27903
Make and model
Boeing 7878
Aircraft serial
34823
Aircraft time
38,222 hours, 4,764 cycles
Part
Actuator
Part number
C99144006
Part serial
B3554
Condition
Failed
Location
Spoiler #5
Stage of operation
CR
How discovered
O
Nature of condition
O
Precautionary procedure
A

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

What was found

ONE SPOILER PANEL FAILED ON LEFT WING DEACTIVATED SPOILER #5 PER AMM 27-61-02 DUE TO HISTORY. REQUEST PLACED #5 SPOILER ON MEL. MEL 2761AR. ADD EMP:123432 DISPATCH DESK: 22 NAME: JV DATE: 09-JUL-22- NOC DESK: 787 NAME: DW DATE: 09-JUL-22- TOMC APPROVED; MM 27-12752 SPOILER MOTOR HAS AN INTERNAL FAULT LOCKED FOR DISPOSITION OF REPEAT FAULT FOR #5 SPOILER. UNLOCKED DISPOSITION MAINTENANCE MESSAGE 27-12752 DUE TO PRIOR ACTUATOR REPLACEMENT, TO DEACTIVED POSITION REF. MEL 2761AR. RECOMMEND CHANGING EMCU. ITEM REMAINS ON MEL, RETURNED SPOILER REACTIVATED SPOILER REF. DDG 27-61-02-01, RAN SYSTEM TEST TWICE. NO FIX (SPOILER ACTUATED BUT FAILED TEST). REFERENCING FIM FOR ADD EMP:U114836 SHOOTING. RAR #5 EMCU IAW AMM 27-61-18. PERFORMED INSTALLATION UPTO AND #5 EMCU FAILED SPOILER RIG TEST, REF AMM 27-61-18-00A-720A, STEP ACCOMPLISHED WIRE CHECKS PER FIM 27-60-F1-P1A-42A-A. WIRES SUSPECT BAD M2761005 ACTUATOR-SPOILER ELECTRIC-5, ORDLM MARTINE INCLUDING 27-61-18-00A-720A-A STEP D 2. 1. D. (6). WITH MAINT MSG 27-12472. NEEDS FURTHER TROUBLE CHECKED GOOD AND MEGGERED GOOD. Z ADD EMP:181291 ADD EMP:U008906 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1950351 SN OFF 1068 UNIT, CONTROL, OFF 78-2741-9-9003 1068 ON 78-2741-9-9005 0798 REMOVED AND REPLACED #5 SPOILER ACTUATOR IN REFERENCE TO DMC 27-61-16. RAN RIG TEST AND SYSTEM TEST. OPS CHECK GOOD AT THIS TIME. NO FAULTS NOTED AT THIS TIME MEL CLEARED. ADD EMP:U375583,U377350 ROTABLE PARTS CHANGE

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