# SDR ASAA2022062438940

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 24, 2022
- Submitted: July 6, 2022
- Operation: Air carrier
- Aircraft: [N568AS](https://openairdocs.org/aircraft/N568AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35183
- Aircraft time: 54,239 hours, 16,223 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7920 · Engine Oil Distribution (Airframe Furnished)](https://openairdocs.org/jasc/7920)
- Part: Oil System
- Part number: UNKNOWN
- Condition: Coked
- Location: Unknown
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022062438940

## Discrepancy

#2 ENGINE OIL TREND DATA SHOWS OIL CONSUMPTION TO GREATER THAN EXPECTED. MXCTL REQUEST. ENGINE POWER RUN REQUIRED. GROUNDED - YES. COMPLETED STEPS 1 THRU 5 OF TSR. WHILE PERFORMING GVI FOUND LARGE AMOUNT OF OIL PUDDLING AT ENG TAILCONE TURBINE REAR FRAME AND SMALL AMOUNT ON GROUND. C/W B737-800 AMM 79-00-00-200-806-F01 AFT SUMP OIL SYS INSP STEP (1). FOUND OIL COKING (LARGE AMOUNT) AT OIL SUPPLY AND SCAVANGE TUBES. THIS CLEARS TSR712245.

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