Service difficulty report · Control Unit · Boeing 7878

Difficulty date
June 11, 2025
Submitted
June 13, 2025
Operation
Air carrier
Aircraft
N811AB
Make and model
Boeing 7878
Aircraft serial
40629
Aircraft time
35,888 hours, 4,849 cycles
Part
Control Unit
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

AIRCRAFT WAS GROUNDED: A/C DOOR 4L EMERGENCY EXIT LIGHTS ILLUMINATED WITH THE EMER LIGHT SWITH IN THE ARMED POSITION. MAINTENANCE FOUND M/M 24-20631 ACTIVE. REMOVED AND REPLACED P300 M1 ELCU PROTECTION UNIT CARD IAW AMM 24-09-04.

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