# SDR AALA20010191

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 2, 2001
- Submitted: March 29, 2001
- Operation: Air carrier
- Aircraft: [N706AA](https://openairdocs.org/aircraft/N706AA), registered now
- Make and model: Boeing 727223
- Aircraft serial: 22463
- Engine: Pwa JT8D15
- System (JASC): [7532 · Compressor Bleed Valve](https://openairdocs.org/jasc/7532)
- Part: Valve
- Part number: 714810
- Condition: Defective
- Location: Nr 2 Engine
- Stage of operation: CL
- How discovered: O
- Nature of condition: E, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20010191

## Discrepancy

IAD - FLT 371 - EN ROUTE IAD-DFW - DURING TAKEOFF, DETECTED A LOUD BANG AND VIBRATION AT CABIN.  RETURNED IAD AND LANDED WITHOUT FURTHER INCIDENT.  REPLACED NR 2 ENGINE BLEED VAVLE.  ACCOMPLISHED HIGH POWER RUN.  SYSTEM GROUND CHECKED NORMAL OPERATION.  (M)

---
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.