# SDR USAA2013041900021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 17, 2013
- Submitted: April 19, 2013
- Operation: Air carrier
- Aircraft: N906AW
- Make and model: Boeing 757-2S7
- Registry model: [Boeing 757-2S7](https://openairdocs.org/model/boeing-757-2s7) (OpenAirDocs)
- Aircraft serial: 23568
- Aircraft time: 94,827 hours, 34,031 cycles
- Engine: Rroyce RB211535E4
- Engine time: 74,376 hours, 28,169 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Duct
- Part number: 312N53217
- Part serial: 01841470
- Condition: Leaking
- Location: Lt Engine
- Part time: 47,602 hours, 13,435 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: M, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2013041900021

## Discrepancy

FLT 47,  EN ROUTE.  FLIGHT EXPERIENCED A LEFT ENGINE OVERHEAT DURING CRUISE.  PULLED ENGINE BACK TO HALF POWER, AND DECLARED AN EMERGENCY.  LANDED AT DESTINATION WITHOUT FURTHER INCIDENT.  MX FOUND THE HP 6 DUCT LEAKING.  REPLACED THE DUCT.  SHOP FOUND DUCT LEAKING AT SLIDER. SPHERICAL SEAL ASSY , PISTON RING,  AND GUIDE RINGS  CHIPPED AND CRACKED BEYOND LIMITS.  PARTS REPLACED WITH NEW.  DUCT ASSY WAS REPAIRED AND OVERHAULED.

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