# SDR NOZR72024B

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 3, 2024
- Submitted: July 9, 2024
- Operation: General aviation
- Aircraft: [N74NG](https://openairdocs.org/aircraft/N74NG), registered now
- Make and model: Beech B300C
- Registry model: [Beech B300C](https://openairdocs.org/model/hawker-beechcraft-b300c) (OpenAirDocs)
- Aircraft serial: FL1053
- Aircraft time: 4,666 hours, 4,285 cycles
- Engine: Pwa PT6A60A
- Engine time: 4,589 hours, 4,148 cycles
- System (JASC): [7532 · Compressor Bleed Valve](https://openairdocs.org/jasc/7532)
- Part: Bleed Valve
- Part number: 3136046
- Part serial: AHX2901093
- Condition: Failed
- Location: Nr 1 Engine
- Part time: 4,589 hours, 4,148 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NOZR72024B

## Discrepancy

THE FLIGHT CREW REPORTED THE NO:1 ENGINE BEGAN POPPING AND LOST 50% OF ITS POWER 11 MINUTES AFTER TAKEOFF. AN UNSCHEDULED LANDING WAS PERFORMED AT THE DEPARTURE AIRPORT - NO INJURIES OR EQUIPMENT DAMAGED RESULTED FROM EPISODE. UPON FURTHER INVESTIGATION, THE DIAPHRAGM WAS FOUND TO BE PARTIALLY BLOWN OUT OF THE COMPRESSOR BLEED VALVE WHICH CAUSED SIGNIFICANT POWER LOSS - NO OTHER FAULT WAS FOUND. THE ENGINE MANUFACTURE WAS CONTACTED (P&WC) AND AS PER THEIR GUIDANCE, AN OVERHAULED REPLACEMENT BLEED VALVE WAS INSTALLED, AND THE AIRCRAFT WAS RETURNED TO SERVICE AFTER OPERATIONAL CHECKS WERE PERFORMED.

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