# SDR AALA202302024822

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 28, 2023
- Submitted: February 2, 2023
- Operation: Air carrier
- Aircraft: [N801NN](https://openairdocs.org/aircraft/N801NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29565
- Aircraft time: 40,143 hours, 16,510 cycles
- System (JASC): [7711 · Engine Pressure Ratio (EPR)](https://openairdocs.org/jasc/7711)
- Part: Sensor
- Part number: 3215KGB01
- Condition: Leaking
- Location: Zone 400 - Nac/P
- Stage of operation: CL
- 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/AALA202302024822

## Discrepancy

AIRCRAFT WAS GROUNDED: RIGHT AFTER TAKEOFF NOTICED DIRTY SOCK SMELL IN CABIN AND FLIGHT DECK. SMELL DISAPPEARED SHORTLY THEREAFTER.  **SUPPLEMENTAL REPORT FOR AALA202301314822: MAINTENANCE FOUND #2 ENGINE OIL LEAK AS SOURCE OF THE FUMES. REPLACED LEAKING #2 ENGINE N1 SPEED SENSOR (AALA202301314822) AND DETERIORATED PACKING (AALA202302021170) PER AMM 77-11-01. ACCOMPLISHED SATISFACTORY LEAK CHECK.** (CLOSED)

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