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SF340 flight crew reports transponder failure with smoke at 5000 feet on departure. Emergency is declared with safe return to departure airport.
| Attributes | |
| ACN | 764137 |
| Time | |
| Date | 200712 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 5000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : zzz.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | SF 340B |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 764137 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial |
| ASRS Report | 764138 |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : landed in emergency condition flight crew : declared emergency other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
Approximately 5 mins after takeoff ATC advised they had lost our transponder. I looked down at the transponder whereupon I saw smoke coming from the transponder head. I initiated the memory items for cockpit smoke and declared an emergency pulled out the QRH and aom and turned back towards the airport stating our intentions to ATC. The flight attendant was informed of the situation and prepared for landing. We landed uneventfully. After safely bringing the aircraft to a complete stop checklists were completed and the engines shut down with no further incident.
Original NASA ASRS Text
Title: SF340 FLT CREW REPORTS TRANSPONDER FAILURE WITH SMOKE AT 5000 FEET ON DEPARTURE. EMERGENCY IS DECLARED WITH SAFE RETURN TO DEPARTURE ARPT.
Narrative: APPROX 5 MINS AFTER TKOF ATC ADVISED THEY HAD LOST OUR XPONDER. I LOOKED DOWN AT THE XPONDER WHEREUPON I SAW SMOKE COMING FROM THE XPONDER HEAD. I INITIATED THE MEMORY ITEMS FOR COCKPIT SMOKE AND DECLARED AN EMER PULLED OUT THE QRH AND AOM AND TURNED BACK TOWARDS THE ARPT STATING OUR INTENTIONS TO ATC. THE FLT ATTENDANT WAS INFORMED OF THE SITUATION AND PREPARED FOR LNDG. WE LANDED UNEVENTFULLY. AFTER SAFELY BRINGING THE ACFT TO A COMPLETE STOP CHKLISTS WERE COMPLETED AND THE ENGS SHUT DOWN WITH NO FURTHER INCIDENT.
Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.