# SDR ASAA2016071717410

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 17, 2016
- Submitted: July 19, 2016
- Operation: Air carrier
- Aircraft: [N407AS](https://openairdocs.org/aircraft/N407AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41731
- Aircraft time: 14,562 hours, 4,645 cycles
- Engine: Cfmint CFM567B27E
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: B-Nut
- Condition: Leaking
- Location: Nr 1 Engine Oil
- Stage of operation: TX
- How discovered: O
- Nature of condition: K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2016071717410

## Discrepancy

OIL DRIPPING FROM NR 1 ENGINE.  ACFT GROUNDED.  LEAK CHECKED NR 1 ENGINE AND FOUND LOOSE B-NUT AT 6 O'CLOCK.  SECURED THE B-NUT AND ACCOMPLISHED THE LEAK CHECK IAW AMM 71-71-00. NO LEAKS NOTED.

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