Service difficulty report · Unknown · Boeing 767322

Difficulty date
September 12, 2026
Submitted
September 14, 2026
Operation
Air carrier
Aircraft
N677UA
Make and model
Boeing 767322
Aircraft serial
30029
Aircraft time
89,636 hours, 16,827 cycles
Engine
Pwa PW4060
Part
Unknown
Condition
Odor
Location
Cockpit
Stage of operation
CL
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

HIGH HEAT ODOR ON CLIMB FO SIDE HAD ELECTRICAL BURNING ODOR SEVERAL TIMES IN CLIMB & CREW REPORTED FLIGHT DECK WAS COOL BEFORE TAKEOFF. DURING CLIMB NOTICED FWD INSTRUMENT PANEL WAS VERY HOT BUT PACK ON FULL COLD & WAS BLOWING COLD AIR. HOTTER ON FO SIDE THAN CAPT SIDE. FO NOTICED ELECTRICAL BURNING ODOR FROM GEAR HANDLE. PERFORMED GVI OF FWD & MAIN E/E BAY & FOUND NO OBVIOUS EVIDENCE OF FIRE OR BURNING. NO ODOR IN EITHER E/E BAY. REMOVED UPPER EICAS DISPLAY, FOUND EQPT COOLING AIR WARMER THAN NORMAL. INSTALLED UPPER EICAS DISPLAY IAW AMM 31-41-01. SUSPECT EQPT COOLING ISSUE. PERFORMED CONDITIONAL INSP OF ODOR IAW AMM 05-51-56-940-801-C1. RAN PACKS FOR LONG DURATION & CYCLED FLT DECK TEMP MULTIPLE TIMES, NO ODOR NOTED. PERFORMED INSP BEHIND BOTH NAV SCREENS FOR LOOSE DUCTING & WIRING. NO FAULTS NOTED. INSPD FWD & CENTER E/E FOR SIGNS OF ELECT BURNING ODOR, & LOOSE DUCTING, NO FAULTS NOTED. CYCLED EQUIPMENT COOLING SWITCH IN DIFFERENT MODES FOR SIGNS ODOR. NO ODOR NOTED. ALL C/B VERIFIED CLOSED PRIOR TO INSPECTION. DUE TO ODOR FORM 46-6020, FLIGHT CREW REPORT ODOR AND HIGH HEAT COMING FROM MCP. WILL REPLACE AS PRECAUTIONARY. EICAS DISPLAYS WERE ALSO INSPECTED FOR LOOSE DUCTING AND ANY BURNT CONNECTIONS. NO PERFORMED TESTS 4 & 30 PER AMM 22-00-02-742-006-001. NO FAULTS FOUND DURING TESTS. RETURNING A/C TO FULL CAT STATUS. OK TO CONTINUE.