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A canadair regional jet in climb at FL200 declared an emergency and diverted due to a cargo smoke warning caused by a failed or defective sensor.
| Attributes | |
| ACN | 398627 |
| Time | |
| Date | 199804 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : phx |
| State Reference | AZ |
| Altitude | msl bound lower : 20000 msl bound upper : 20000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zab |
| Operator | common carrier : air carrier |
| Make Model Name | Challenger CL604 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude other other |
| Route In Use | enroute : direct enroute other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 3300 flight time type : 11 |
| ASRS Report | 398627 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : declared emergency other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
After about 15 mins of flight, we had a 'cargo smoke' annunciator flashing at us. We pulled the checklist, ran the procedures and idented the problem as a false warning. The captain elected not to discharge the fire extinguisher bottles. We declared an emergency and flew back to phx. We landed about 2000 pounds over maximum landing weight (reason for the emergency). The landing was uneventful. There was no fire, just a defective sensor. Callback conversation with reporter revealed the following information: the reporter stated the aircraft was a canadair regional jet and after the return to phx, maintenance found and replaced a defective cargo smoke sensor. The reporter said an overweight landing inspection was also accomplished.
Original NASA ASRS Text
Title: A CANADAIR REGIONAL JET IN CLB AT FL200 DECLARED AN EMER AND DIVERTED DUE TO A CARGO SMOKE WARNING CAUSED BY A FAILED OR DEFECTIVE SENSOR.
Narrative: AFTER ABOUT 15 MINS OF FLT, WE HAD A 'CARGO SMOKE' ANNUNCIATOR FLASHING AT US. WE PULLED THE CHKLIST, RAN THE PROCS AND IDENTED THE PROB AS A FALSE WARNING. THE CAPT ELECTED NOT TO DISCHARGE THE FIRE EXTINGUISHER BOTTLES. WE DECLARED AN EMER AND FLEW BACK TO PHX. WE LANDED ABOUT 2000 LBS OVER MAX LNDG WT (REASON FOR THE EMER). THE LNDG WAS UNEVENTFUL. THERE WAS NO FIRE, JUST A DEFECTIVE SENSOR. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE ACFT WAS A CANADAIR REGIONAL JET AND AFTER THE RETURN TO PHX, MAINT FOUND AND REPLACED A DEFECTIVE CARGO SMOKE SENSOR. THE RPTR SAID AN OVERWT LNDG INSPECTION WAS ALSO ACCOMPLISHED.
Data retrieved from NASA's ASRS site as of July 2007 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.