# SDR 2007UALA01717

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 26, 2007
- Submitted: June 1, 2007
- Operation: Air carrier
- Aircraft: [N672UA](https://openairdocs.org/aircraft/N672UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 30027
- Aircraft time: 26,420 hours, 7,238 cycles
- Engine: Pwa PW4052
- Engine time: 32,333 hours, 5,323 cycles
- System (JASC): [3620 · Pneumatic Indicating System](https://openairdocs.org/jasc/3620)
- Part: Warning Light
- Condition: Illuminated
- Location: Bleed Air Sys
- Stage of operation: DE
- How discovered: O
- Nature of condition: J
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007UALA01717

## Discrepancy

ENGINE BLEED LIGHT CAME ON AT TOP OF DESCENT, WITH EICAS BLEED MSG.  [07-10-07]  CREW SHUT OFF ENG BLEED AIR & ACCOMPLISHED AIR SUPPLY MODULE BITE TEST.  RESET & CHECKED OK.  FOLLOWUP TROUBLE SHOOTING FOUND NR 1 ENG ELBOW  FTTG LOOSE AT HPSOV.  RESECURED ELBOW & VALVE/ SYSTEM CHKS OK.  SUSPECT VIBRATION & THERMAL CHANGE CAUSED ELBOW CLAMP TO LOOSEN.

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