SDR IPXA2025092946537

Service difficulty report · Apu · Boeing 767346

Difficulty date: September 25, 2025
Submitted: September 29, 2025
Operation: Air carrier
Aircraft: N363UP
Make and model: Boeing 767346
Aircraft serial: 33494
Aircraft time: 53,664 hours, 18,859 cycles
System (JASC): 4900 · Airborne Auxiliary Power Unit (APU) System
Part: Apu
Condition: Odor
Location: Zone 100
Stage of operation: IN
How discovered: V
Nature of condition: B
Precautionary procedure: K

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

What was found

WITH APU ON - TURNING ON FIRST PACK WE ARE HAVING HEAVY OIL SMELL FUMES IN COCKPIT. TS PERFORMED FOR OIL SMELL FUMES IN THE COCKPIT IAW FIM 21-00-21/201 REV 146. OIL SMELL FUMES NOT OBSERVED. AIR CONDITIONING SYSTEM OPERATIONAL TEST PERFORMED WITH APU BLEED IAW AMM 21-00-00/201, 36-00-00/201REV 146. TEST RESULT SATISFACTORY. NO SMELL. THIS CLOSES DMI. DMP REVERSED AND PLACARD REMOVED.