# SDR ASAA2017100622137

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 6, 2017
- Submitted: October 9, 2017
- Operation: Air carrier
- Aircraft: [N508AS](https://openairdocs.org/aircraft/N508AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35691
- Aircraft time: 35,239 hours, 10,608 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7532 · Compressor Bleed Valve](https://openairdocs.org/jasc/7532)
- Part: Screw
- Condition: Broken
- Location: High Stage Valve
- Part time: 14,371 hours, 4,197 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017100622137

## Discrepancy

NR 1 ENGINE HAD A BROKEN LOCK SCREW ON THE HIGH STAGE VALVE.  ACFT GROUNDED.  REMOVED AND INSTALLED A NEW HIGH STAGE VALVE IAW AMM 36-11-06-400-801, AND 36-11-06-000-801. LEAK & OPS CHECKED.

---
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.