# SDR AALA202112100783

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 7, 2021
- Submitted: December 10, 2021
- Operation: Air carrier
- Aircraft: [N821NN](https://openairdocs.org/aircraft/N821NN), registered now
- Make and model: Boeing 737*
- Aircraft serial: 30912
- Aircraft time: 35,999 hours, 14,646 cycles
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Seal
- Condition: Damaged
- Location: Zone 400 - Nac/P
- Component: Engine, CFM567B
- Component part number: CFM567BTIQEC737
- Stage of operation: CR
- How discovered: V
- Nature of condition: J, K
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202112100783

## Discrepancy

AIRCRAFT WAS GROUNDED: LH ENGINE OIL QTY INDICATION LOW WITH OIL PRESSURE FLUCTUATING IN PRECAUTIONARY AMBER ZONE, FLIGHT DECLARED EMERGENCY AND DIVERTED TO RDU. **SUPPLEMENTAL REPORT: REPLACED SEALOL SEAL WITH NEW AT N2 DRIVE PAD ON LH ENGINE IAW AMM 72-60-00 AND REPLACED LH ENGINE (AALA202112106009) WITH SERVICEABLE UNIT IAW WORKCARD 08L40072003, LEAK AND OPS CHECK GOOD. WILL BE SUBMITTED.** (CLOSED)

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