# SDR ASAA2023021842030

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 18, 2023
- Submitted: February 22, 2023
- Operation: Air carrier
- Aircraft: [N557AS](https://openairdocs.org/aircraft/N557AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35176
- Aircraft time: 61,014 hours, 17,724 cycles
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Cover
- Part number: 3360247040
- Condition: Leaking
- Location: Lpt Module
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023021842030

## Discrepancy

REF ASA T/C 78472000 DURING INSPECTION FOUND #1 ENG S/N 895405 OIL LEAKAGE AND COKE AT OIL SCAVENGE TUBE TO TRF INTERFACE. GROUNDED - YES. REMOVED AND REPLACED TURBINE REAR FRAME (TRF) OIL INLET COVER REF B737-800 AMM 72-56-00.

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