# SDR DXTA2022041960660

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 18, 2022
- Submitted: May 9, 2022
- Operation: Air carrier
- Aircraft: [N702QS](https://openairdocs.org/aircraft/N702QS), registered now
- Make and model: Bombdr BD1001A10
- Aircraft serial: 20801
- Aircraft time: 3,089 hours, 1,781 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: None
- Part number: 38007742
- Part serial: P886
- Condition: Leaking
- Part time: 3,093 hours
- Stage of operation: UK
- 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/DXTA2022041960660

## Discrepancy

BLEED AIR: CABIN AIR HAS A VERY STRONG MUSTY SMELL, PARTICULARLY IN HUMID CONDITIONS. /// CORRECTIVE ACTION /// BORESCOPE INSPECTED APU COMPRESSOR SEAL. FOUND VERY SOOTY AND EVIDENANCE OF OIL LEAKING. REMOVED AND REPLACED APU. OPS AND LEAKS CHECKS GOOD, NO DEFECTS NOTED IAW CL 350SMM 49-11-00. MUSTY SMELL NO LONGER PRESENT DURING APU OPERATION.

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