# SDR ASAA2023021541960

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 15, 2023
- Submitted: February 17, 2023
- Operation: Air carrier
- Aircraft: [N529AS](https://openairdocs.org/aircraft/N529AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35198
- Aircraft time: 45,393 hours, 13,368 cycles
- System (JASC): [7920 · Engine Oil Distribution (Airframe Furnished)](https://openairdocs.org/jasc/7920)
- Part: Lubrication
- Part number: 41F1005
- Part serial: YT130048
- Condition: Leaking
- Location: #1 Engine
- Part time: 54,409 hours, 15,862 cycles
- 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/ASAA2023021541960

## Discrepancy

TURBINE AFT SUMP SUSPECTED OIL LEAK #1 ENG. #1 ENG OIL CONSUMPTION MAY HAVE BEEN EXCEEDED. GROUNDED - YES. ACCOMPLISHED ENG OIL CONSUMPTION SPIKE GVI PER B737-800 AMM 71-71-00-890-801-F00, FOUND BIG PUDDLE CAUSE BY LEAKS FROM TURBINE REAR FRAME AFT SUMP. REQUIRES TURBINE REAR FRAME AFT SUMP INSP PER B737-800 AMM 72-56-00-211-801-F00. REMOVED AND REPLACED #1 ENG LUBE UNIT REF AMM 79-21-01. PERFORMED TEST 3A IDLE LEAK CK. NO LEAKS NOTED.

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