# SDR ANCF200800004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 8, 2008
- Submitted: February 14, 2008
- Operation: Air carrier
- Aircraft: [N513NA](https://openairdocs.org/aircraft/N513NA), registered now
- Make and model: Boeing 757-2T7
- Registry model: [Boeing 757-2T7](https://openairdocs.org/model/boeing-757-2t7) (OpenAirDocs)
- Aircraft serial: 23895
- Aircraft time: 60,460 hours, 25,362 cycles
- Engine: Rroyce RB211535E4
- Engine time: 14,854 hours, 10,054 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Air Duct
- Part number: 312N53217
- Part serial: 12890903
- Condition: Leaking
- Stage of operation: CL
- 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/ANCF200800004

## Discrepancy

EICAS MESSAGE "L ENG OVHT" DISPLAYED, WITH "ENG OVHT" LIGHT ILLUM.  LIGHT REMAINED ILLUM AFTER THRUST REDUCTION, ENGINE WAS SHUTDOWN , (LIGHT EXTINGUISHED INITIALLY AFTER THRUST REDUCTION BUT AFTER FEW SECONDS IT ILLUMINATED AGAIN).  PERFORM FIM 26-11-00 AND FIM 71-05-00 FIG 121, FOUND EGT EXCEEDANCE 865°C FOR 33 SECONDS ON ZONE "A", AS PER FIG 121, IT IS WITHIN LIMITS.  ALSO PERFORMED FIM 26-11-00, ALL ENGINE OVERHEAT DETECTION TEST OK.  DUE ENGINE SHUTDOWN  IN FLIGHT MM 71-99-00 PAGE 604 PARAGRAPH FOR -2B, WAS PERFORMED.  DURING INSPECTION FOUND HP2 AND HP6  DUCTS EVIDENCE OF PLAY ON JUNCTION, CAUSING AIR LEAK.  REF IPC, 75-00-51-01 FIG 1 PROCEDURE TO REPLACE, HP2 AND HP6 DUCTS PER AMM 36-11-01-401.

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