# SDR DXTA2013112005574

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 19, 2013
- Submitted: November 27, 2013
- Operation: Air carrier
- Aircraft: [N700QS](https://openairdocs.org/aircraft/N700QS), registered now
- Make and model: Israel GALAXY
- Registry model: [Israel GALAXY](https://openairdocs.org/model/israel-aircraft-industries-galaxy) (OpenAirDocs)
- Aircraft serial: 052
- Aircraft time: 7,773 hours, 4,699 cycles
- Engine: Pwa PW306B
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Part number: 31B518002
- Part serial: PCECC0186
- Condition: Damaged
- Location: Right
- Part time: 6,822 hours, 4,191 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: E
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2013112005574

## Discrepancy

CLIMBING THROUGH 38000' IN MAX CLIMB DETENT 290KTS TWO DISTINCT BANGS, SIMILAR TO COMPRESSOR STALLS, WERE FELT THROUGH FLOOR, RUDDERS & CONTROLS.  ALL INSTRUMENT READINGS WERE NORMAL EXCEPT 1/4 SCALE ON RT VIB METER. DISCONNECTED A/P DES TO 24000 SLOWED 250KTS. STILL FELT SLIGHT YAW PRESS UNTIL BELOW 250KTS & 6000'.  GND RUNS CHECKED SATISFACTORY.  WHILE TROUBLESHOOTING, PERFORMED BOROSCOPE INSPECTION OF RT ENG 1ST & 4TH STAGE COMPRESSOR BLADES COATING INTEGRITY IAW PW306A MM 72-00-00 & FOUND 4TH STAGE COATING TO BE DAMAGED.  REPLACED RT ENG ASSEMBLY WITH A SERVICEABLE ENG ASSEMBLY IAW G200 MM 71-00-00.  ALL POST INSTALLATION OPERATION CHECKS & LEAK CHECKED GOOD.

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