# SDR GTIA2025031838804

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 16, 2025
- Submitted: March 18, 2025
- Operation: Air carrier
- Aircraft: [N668NK](https://openairdocs.org/aircraft/N668NK), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7135
- Aircraft time: 29,836 hours, 13,275 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Oil System
- Condition: Leaking
- Location: Apu
- Stage of operation: UK
- How discovered: V
- Nature of condition: K, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GTIA2025031838804

## Discrepancy

FUME EVENT AFT SECTION OF THE AIRCRAFT-RETORQUE APU GENERATOR OIL DRAIN PLUG PER AMM 24-23-51. LEAK CHECK GOOD . PERFORMED LEVEL A DECONTAMINATION OF ECS IAW AMM 21-00-00. NO ODORS NOTED APU REQUIRES DEFERRAL FOR STEAM CLEANING. SEE PL 3563439-1

---
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.