# SDR DALA2026070603931

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 2, 2026
- Submitted: July 7, 2026
- Operation: Air carrier
- Aircraft: [N372DA](https://openairdocs.org/aircraft/N372DA), registered now
- Make and model: Boeing 737832
- Aircraft serial: 29620
- Aircraft time: 82,309 hours, 34,373 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Oil System
- Condition: Leaking
- Location: Apu
- Component: Apu
- Component part number: 38007021
- Stage of operation: TX
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2026070603931

## Discrepancy

APU, PRIOR TO PUSH BACK WITH PACKS ON. A SMELL OF SMOKE ACCOMPANIED WITH A BANGING NOISE IT TAIL. AND VISIBLE SMOKE OBSERVCED BY GROUND CREW. NO ABNORAMAL INDICATIONS IN FLIGHT DECK. : R & R RECIRCULATION AIR FILTERS IAW AMM 21-25.  REMOVED AND REPLACED APU, PERFORMED DECONTAMINATION. (8760192) AIRCRAFT WAS GROUNDED

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.