# SDR GTIA2025080739037

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 5, 2025
- Submitted: August 7, 2025
- Operation: Air carrier
- Aircraft: [N703NK](https://openairdocs.org/aircraft/N703NK), registered now
- Make and model: Airbus A321-271NX
- Registry model: [Airbus A321-271NX](https://openairdocs.org/model/airbus-s-a-s-a321-271nx) (OpenAirDocs)
- Aircraft serial: 11383
- Aircraft time: 6,750 hours, 2,523 cycles
- Engine: Iae PW1133GJM
- System (JASC): [7230 · Turbine Engine Compressor Section](https://openairdocs.org/jasc/7230)
- Part: Compressor
- Condition: Leaking
- Location: Nr 1
- Stage of operation: DE
- 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/GTIA2025080739037

## Discrepancy

BURNING OIL & HUMID SMELL DURING CLIMB OUT. SMELL WENT AWAY WITH PACK 1 OFF. DESCRIPTION OF ODOR/FUMES: PERSISTENT, OIL/OIL BURNING SMELL. APPARENT CABIN SOURCE: CABIN AIR SUPPLY VENTS. FLIGHT DECK. NO VISIBLE SMOKE/HAZE. NO MEDICAL ATTENTION REQUIRED.-PERFORMED BSI OF LPC & HPC FOUND OIL WETTING ON HPC 1 AND OIL STAINING ON HPC 2 & 3. REF AMM 72-31-00 & 72-36-00. SEE LG PG 3074976 ITEM # 1 ENG 1 BSI FOR CONTAMINATION.

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