Service difficulty report · Unknown · Boeing 737823

Difficulty date
June 25, 2026
Submitted
July 1, 2026
Operation
Air carrier
Aircraft
N903NN
Make and model
Boeing 737823
Aircraft serial
31153
Aircraft time
40,076 hours, 17,274 cycles
Engine
Cfmint CFM567B24E
Engine time
40,076 hours, 17,275 cycles
Part
Unknown
Condition
Odor
Location
Cabin
Stage of operation
TO
How discovered
O
Nature of condition
B
Precautionary procedure
O

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

What was found

AIRCRAFT WAS GROUNDED: REPEAT WRITE UP. MUSTY SMELL NOTED ON TAKEOFF ROLL, LASTED FOR 60 TO 90 SECONDS. 26K THRUST AT 99.7 N1. ALL ENGINE INDICATIONS NORMAL, NO OTHER ABNORMALS NOTED. MAINTENANCE REPLACED NBR 2 ENGINE PER JC 08L40072003.