Service difficulty report · Unknown · Boeing 7673CB

Difficulty date
April 27, 2026
Submitted
April 27, 2026
Operation
Air carrier
Aircraft
N684UA
Make and model
Boeing 7673CB
Aircraft serial
33466
Aircraft time
79,337 hours, 13,614 cycles
Part
Unknown
Condition
Odor
Location
Cabin
Stage of operation
TX
How discovered
O
Nature of condition
B
Precautionary procedure
D

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

What was found

ON LEFT ENGINE STARTUP- FLT ATT REPORTED VERY STRONG GAS FUMES I N CABIN. COCKPIT SMELL TOOREFER TO LP# 8627807 EGC PERFORMED FUEL DISTRIBUTION INSPECTION UP TO AND INCLUDING STEP 2. F (2)(M) PER AMM: 73-11-00-206-001-N00. NO LEAK CHECKED NOTED DURING PRESS CHECK. FOR INSTALLATION OF FUEL VALVE STRAINER, COMPLETED UP TO AND INCLEDING STEPS 3. F (O). PER AMM: 73-11-04 TEST AND LEAK CHECK STILL PENDING. THAT ALSO COMPLETES THE FUEL DISTRIBUTION SYSTEM INSPECTION PER AMM 73-11-00-206-001-N00. ALSO PERFORMED AMM 05-51-56-940-801-C1 UP TO AND INCLUDING 1. D. (8) PERFORMED LEAK CHECK OF FUEL DISTRIBUTION VALVE IAW AMM 73-11-04-404-028-N00 AND POWER PLANT TEST REFERENCE TABLE (71-00-00-501). NO LEAKS NOTED OK TO CONTINUE CONTINUED INSPECTION IAW AMM 05-51-56-940-801-C1 FROM STEP 1)D)8 TO STEP 1)D)21. FOUND SOURCE OF SMELL TO COME FROM ENGINE 1. REF 8660083 FOR INSPECTION OF OIL INSIDE THE 2.5 BLEED AREA NO OIL LEAK FOUND. NO FUEL LEAKS NOTED ON ENGINE FROM INSPECTION FUEL DISTRUBUTION VALVE. FUMES CLEAR SHORTLY AFTER NORMNORMALLY EACH TIME. WITH TOMC CONCURRENCE, OK TO CLOSE LOG PAGE.

More about the Boeing 767-3CB