# SDR CALA2026010612723

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 5, 2026
- Submitted: January 7, 2026
- Operation: Air carrier
- Aircraft: [N19141](https://openairdocs.org/aircraft/N19141), registered now
- Make and model: Boeing 757224
- Aircraft serial: 30354
- Aircraft time: 88,949 hours, 21,079 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Part number: 380029813
- Part serial: P1514
- Condition: Faulted
- Location: Aft
- Stage of operation: IN
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026010612723

## Discrepancy

AFTER STARTING APU & DISCONNECTING GROUND POWER, CREW & PAX SAW & SMELLED SMOKE. WAS WHITE & HAD A BURNING ELECT ODOR. APU SHUTDOWN AUTOMATICALLY & CREW POWERED DOWN ADDITIONAL SYS.  PERFORMED APU MAGNETIC CHIP DETECTOR INSP,  FOUND METAL ON COMPRESSION BEARING & DRAIN CHIP DETECTOR.  REMOVED APU IAW AMM 49-11-01-004-001. INSTALLED APU UP TO & INCLUDING STEP F(43) IAW AMM 49-11-01-404-246.  C/W RII REQUIREMENTS FOR INSTALLATION  OF APU UP TO & INCLUDING STEP F(43) IAW AMM 49-11-01-404-246.  PERFORMED APU INSTALLATION FROM STEP F(43) IAW AMM 49-11-01-404-246 TO COMPLETION. PERFORMED OPS & LEAK CHKD IAW AMM 49-11-00-802-001. NO LEAKS OR FAULTS NOTED. OK TO CONTINUE C/W RII INSP OF APU OPS. & LEAK CHKD GOOD.

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