# SDR ASOA02324

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 10, 2002
- Operation: Air carrier
- Aircraft: N502AS
- Make and model: Emb EMB-120ER
- Registry model: [EMB EMB-120ER](https://openairdocs.org/model/embraer-emb-120er) (OpenAirDocs)
- Aircraft serial: 120274
- Engine: Pwa PW118
- System (JASC): [3600 · Pneumatic System](https://openairdocs.org/jasc/3600)
- Part: Wire
- Part number: M2275941229
- Condition: Broken
- Location: Sensor
- Part time: 23,004 hours
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: O, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASOA02324

## Discrepancy

DURING CLIMB OUT, AT APPROXIMATELY 19,000 FEET,  CAPTAIN REPORTED THAT DUCT LEAK WARNING WAS RECEIVED WITH CORRESPONDING LEFT DUCT LEAK LIGHT ILLUMINATING.  CAPTAIN RAN CHECKLIST.  WITH APU BLEED CLOSED THE WARNING INDICATION WENT OUT BRIEFLY THEN RETURNED.  WHEN LEFT BLEED WAS CLOSED INDICATION WENT OUT, BRIEFLY CAME BACK ON, THEN WENT AWAY AGAIN. DECISION WAS MADE TO RETURN TO AIRPORT.  EMERGENCY WAS DECLARED.  UPON CONTINUATION OF DUCT LEAK CHECKLIST, CAPTAIN FEATHERED THE LEFT ENGINE AND INDICATION LIGHT EXTINGUISHED, ENGINE WAS NOT SHUTDOWN.  SINGLE ENGINE CHECKLIST WAS PERFORMED, AIRCRAFT LANDED SAFELY.  REPAIRED WIRING TO SENSOR AT JUNCTION TO APU BLEED DUCT.   OPERATION CHECKS OK.  A/C OK FOR SERVICE.

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