# SDR ASAA2021072335505

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 23, 2021
- Submitted: July 26, 2021
- Operation: Air carrier
- Aircraft: [N474AS](https://openairdocs.org/aircraft/N474AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 40715
- Aircraft time: 22,787 hours, 7,246 cycles
- Engine: Cfmint CFM567B27E
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: O-Ring
- Part number: J221P138
- Condition: Loose
- Location: Nr 2 Eng Oil Cap
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021072335505

## Discrepancy

#2 ENG OIL CAP "O" RING LOOSE. GROUNDED - YES. REPLACED THE OIL CAP "O" RING REF B737-900 MM 79-11-01-300-801 F00.

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