# SDR U5QA2019123070094

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 27, 2019
- Submitted: December 30, 2019
- Operation: Air carrier
- Aircraft: [N312EA](https://openairdocs.org/aircraft/N312EA), registered now
- Make and model: Bombdr BD1001A10
- Aircraft serial: 20602
- Aircraft time: 1,684 hours, 916 cycles
- Engine: Hnywl AS90721A
- Engine time: 1,684 hours, 921 cycles
- System (JASC): [7532 · Compressor Bleed Valve](https://openairdocs.org/jasc/7532)
- Part: Bleed Valve
- Part number: 54017964
- Part serial: 2932
- Condition: Inoperative
- Location: Rt Engine
- Part time: 1,684 hours, 921 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: R, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/U5QA2019123070094

## Discrepancy

ON DEPARTURE AT APPROX. 600 FEET AGL EXPERIENCED MULTIPLE COMPRESSOR STALLS.  REDUCED THROTTLE FROM CLIMB POWER TO APPROX. 80% WHEN THE COMPRESSOR STALLS OCCURRED. CONFIRMED IT WAS RH ENGINE AFTER SEEING N1 ROLLING BACK. BROUGHT POWER TO IDLE AND RETURNED FOR LANDING.  MX C/A: GAINED ACCESS AND R&R MAIN SURGE BLEED VALVES (SBV) (2EA) WITH INSPECTED UNITS (REMOVED P/N 540-1796-4; S/N'S 2932 & 2959. CLOSED ACCESS AND COMPLETED OPERATIONAL CHECKS IAW AS907-2-1A LMM 72-05-22 CH. 75-30-03 REV7 DATED 3/27/19.  MX CHECK FLIGHT TO BE PERFORMED PRIOR TO RTS.

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