Service difficulty report · Fan · Boeing 777224

Difficulty date
December 4, 2025
Submitted
December 8, 2025
Operation
Air carrier
Aircraft
N74007
Make and model
Boeing 777224
Aircraft serial
29477
Aircraft time
121,741 hours, 12,511 cycles
Part
Fan
Part number
4100943C
Part serial
1006A
Condition
Seized
Location
Zone 100
Part time
119,162 hours, 12,186 cycles
Stage of operation
CR
How discovered
O
Nature of condition
B
Precautionary procedure
A

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

What was found

PER VERBAL FROM THE CAPTAIN, ELECTRICAL, ACRID ODOR IN CABIN AND FLT DECK. NO VISIBLE SMOKE NOTED. CONDITIONAL INSPECTION CARRIED OUT IAW AMM 05-51-58-800-801-C3, UP TO & INCLUDING BLOCK 1. B. NO DEFECTS NOTED BY CREW IN DE-BRIEFING, RECIRC FAN STATUS MESSAGE SHOWS ON MAT AS FIRST MESSAGE TO APPEAR DURING FLT. MESSAGE 21-24700 ACTIVE. OTHER MESSAGES OCCURRED AFTERWARDS & ARE EXPECTED TO BE A CONSEQUENCE OF HOW THE ACFT WAS CONFIGURED FOR THE FUME EVENT. INSPECTIONS CARRIED OUT IAW AMM 05-51-58-800-801-C3 OF FLT DECK, GALLEYS, LAVS, CABIN, EE BAY WITH NO ODORS EVIDENT. RIGHT LOWER RECIRC FAN REMOVED IAW AMM REF 21-25-07 AND FOUND SEIZED. CONDITIONAL INSPECTION IS NOW COMPLETE.