Service difficulty report · Relay · Airbus A330343

Difficulty date
October 31, 2025
Submitted
November 4, 2025
Operation
Air carrier
Aircraft
N4621K
Make and model
Airbus A330343
Aircraft serial
1902
Aircraft time
5,492 hours, 1,463 cycles
Part
Relay
Part number
751VU121
Condition
Failed
Location
Flight Deck
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

EXIT SIGNS REMAIN ILLUMNINATED AT ALL TIMES, REGARDLESS OF NO SMOKING SWITCH POSTION. GROUNDED - YES. REMOVED & REPLACED RELAY (8WL) IAW A330 TSM 23-73-71-810-852-A. OPS TEST OF NO SMOKING SW GOOD. EXIT LTS OFF WHEN SWITCH IN OFF POSITION. OK TO CONTINUE.

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