Service difficulty report · Control Unit · Boeing 7879

Difficulty date
March 3, 2026
Submitted
March 5, 2026
Operation
Air carrier
Aircraft
N24993
Make and model
Boeing 7879
Aircraft serial
38269
Aircraft time
4,810 hours, 463 cycles
Part
Control Unit
Part number
100260103
Condition
Faulted
Location
Zone 200
Stage of operation
IN
How discovered
C
Nature of condition
L
Precautionary procedure
K

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

What was found

PASSENGER SEAT EMERGENCY LIGHTS, SEATS 44D, 45D, 46D INOPERATIVE. PERFORMED FIN DMC-B787-A-33-50-F1-BCA-421A-A, NOTED WCU M3351WG01 WITH ABNORMAL FUNCTION. REMOVED AND REPLACED WCU IAW DMC-B787-A-33-51-07-01A-520A-A/720A/A. . NOTED EPL POSITION 47D DAMAGE. REMOVED AND REPLACED THE LIGHT AT 47D IAW DMC-B787-A-33-51-06-00A-520A-A/720A-A. SYSTEM WORKING PROPERLY. ACFT GOOD FOR SERVICE.

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