# SDR AMTA200400333

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 21, 2004
- Submitted: August 13, 2004
- Operation: Air carrier
- Aircraft: N557TZ
- Make and model: Boeing 757-33N
- Registry model: [Boeing 757-33N](https://openairdocs.org/model/boeing-757-33n) (OpenAirDocs)
- Aircraft serial: 32591
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Clamp
- Condition: Loose
- Location: Bleed Air Duct
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AMTA200400333

## Discrepancy

LT ENGINE OVERHEAT EICAS MESSAGE AT FL420, OVERHEAT INDICATION REMAINED WITH THROTTLE CLOSED, BAV CLOSED FOR APPROX 2 MINUTES EXTINGUISHED AND DID NOT REOCCUR AT ANY POWER SETTING.  TROUBLESHOT PER FIM 26-11-00 FIG 103.  FOUND CLAMPS LOOSE ON IP AND HP BLEED DUCTS AND VALVE 11/2 TURNS.  HP SENSE LINE AT HP DUCT AND HI STAGE PILOT LOOSE.  NOTING GREY FLASH AT ALL POINTS OF TIGHTENING.  OK FOR SERVICE.  (M)

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