# SDR CALA2026030314213

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 1, 2026
- Submitted: March 3, 2026
- Operation: Air carrier
- Aircraft: [N36280](https://openairdocs.org/aircraft/N36280), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31598
- Aircraft time: 64,348 hours, 23,903 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Condition: Smoke
- Location: Zone 100
- Stage of operation: TX
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026030314213

## Discrepancy

APU WILL NOT HOLD ELECTR ICAL POWER,  GROUND CREW SAW A PUFF OF SMOKE FROM APU.  FUMES IN FLT DECK STARTED APU IAW 49-11-00. VERIFIED NO SMOKE OR FUMES ON START. REMOVED GROUND POWER, APU CONTINUED TO RUN WITH NO ISSUES NO FOUL ODOR DETECTED.

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