# SDR I5PA2022031468802

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 14, 2022
- Submitted: April 8, 2022
- Operation: Air carrier
- Aircraft: [N688SL](https://openairdocs.org/aircraft/N688SL), registered now
- Make and model: Boeing 757230
- Aircraft serial: 25140
- Aircraft time: 99,203 hours, 25,475 cycles
- Engine: Pwa PW2040
- Engine time: 79,800 hours, 27,122 cycles
- System (JASC): [7532 · Compressor Bleed Valve](https://openairdocs.org/jasc/7532)
- Part: Bleed Valve
- Part number: 5840207104
- Part serial: 0331
- Condition: Unserviceable
- Location: L Eng
- Stage of operation: CR
- How discovered: O
- Nature of condition: S
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/I5PA2022031468802

## Discrepancy

CREW REPORTED LEFT ENGINE FLUCTUATES STARTING FL 330 & INTERMITTENTLY DURING CRUISE @ FL 340.  EPR .04/ N1 .4.  REMOVED AND REPLACED LEFT ENGINE 14TH STAGE BLEED VALVE IAW AMM 73-32-02.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.