# SDR TSAA0672037

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 12, 2006
- Submitted: May 19, 2006
- Operation: Air carrier
- Aircraft: N1PC
- Make and model: Boeing 737-2P6
- Registry model: [Boeing 737-2P6](https://openairdocs.org/model/boeing-737-2p6) (OpenAirDocs)
- Aircraft serial: 21613
- Engine: Pwa JT8D
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Malfunctioned
- Location: Nr 1
- Stage of operation: DE
- 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/TSAA0672037

## Discrepancy

ON DESCENT THE CREW ADVANCED THE THROTTLES AND HEARD 3 LOAD BANG SOUNDS FROM THE NR 1 ENGINE.  THERE WERE NO ABNORMAL ENGINE INDICATIONS.  CREW RETARDED THROTTLES SLIGHTLY AND THE SOUNDS DISSIPATED AND DID NOT RETURN.  CREW LANDED IN KOA WITHOUT FURTHER INCIDENT.  MAINTENANCE INSPECTED THE NR 1 ENGINE.  RAN THE ENGINE FOR AN ACCELERATION CHECK.  ENGINE RUN TEST OK.  MAINTENANCE ALSO LUBED THE BLEED VALVES AS A PRECAUTION AND RETURNED THE AIRCRAFT TO SERVICE.

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