# SDR ASOA02321

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 10, 2002
- Submitted: July 8, 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): [3620 · Pneumatic Indicating System](https://openairdocs.org/jasc/3620)
- Part: Warning System
- Condition: Malfunctioned
- Location: Cockpit
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASOA02321

## Discrepancy

DURING CLIMBOUT, AT 12000 FEET, THE AURAL WARNING LIGHT ILLUMINATED FOLLOWED BY THE ILLUMINATION OF THE LEFT DUCT LEAK LIGHT.  THE CAPTAIN FOLLOWED THE QRH PROCEDURES WHICH INCLUDED THE SECURING OF THE ENGINE.  THE DUCT LEAK LIGHT EXTINGUISHED.  AN EMERGENCY WAS DECLARED.  SINGLE ENGINE PROCEDURES WERE FOLLOWED BY THE CAPTAIN TO RETURN AND LAND SAFELY.  MAINTENANCE RAN THE LEFT ENGINE AND INSPECTED THE LEFT INBOARD DUCT AND OVERWING DUCT FOR LEAKS.  OPERATIONAL CHECK WAS NORMAL AND NO LEAKS WERE FOUND IN THE DUCTS.  AIRCRAFT OK FOR SERVICE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.