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Flight crew of lear 25 experienced engine spooldown at FL410. Declared emergency descent and restarted engine at FL250.
| Attributes | |
| ACN | 505875 |
| Time | |
| Date | 200103 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : ags.airport |
| State Reference | GA |
| Environment | |
| Flight Conditions | VMC |
| Weather Elements | Turbulence |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl.artcc |
| Operator | common carrier : air taxi |
| Make Model Name | Learjet 25 |
| Operating Under FAR Part | Part 135 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air taxi |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 50 flight time total : 10450 flight time type : 90 |
| ASRS Report | 505875 |
| Person 2 | |
| Affiliation | company : air taxi |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : engine output indications other flight crewa other flight crewb |
| Resolutory Action | aircraft : equipment problem dissipated flight crew : declared emergency flight crew : overcame equipment problem other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
On a flight between willow run, mi, and ft lauderdale executive, fl, we observed a sudden bang. On observing the pressurization, the cabin altitude began to rise slightly. We immediately requested a descent and began the memory items. During this time, we noticed the left engine had failed, and immediately declared an emergency. Upon reaching FL250, we secured the engine. After about 5 mins, we attempted a restart (windmill). Upon a successful engine restart, we advised ATC and with their permission, climbed to FL350 and proceeded to fxe with no further problems and normal indications. Our initial cruise altitude was FL410 and we had just began to experience moderate to heavy turbulence at the time of the engine failure.
Original NASA ASRS Text
Title: FLC OF LEAR 25 EXPERIENCED ENG SPOOLDOWN AT FL410. DECLARED EMER DSCNT AND RESTARTED ENG AT FL250.
Narrative: ON A FLT BTWN WILLOW RUN, MI, AND FT LAUDERDALE EXECUTIVE, FL, WE OBSERVED A SUDDEN BANG. ON OBSERVING THE PRESSURIZATION, THE CABIN ALT BEGAN TO RISE SLIGHTLY. WE IMMEDIATELY REQUESTED A DSCNT AND BEGAN THE MEMORY ITEMS. DURING THIS TIME, WE NOTICED THE L ENG HAD FAILED, AND IMMEDIATELY DECLARED AN EMER. UPON REACHING FL250, WE SECURED THE ENG. AFTER ABOUT 5 MINS, WE ATTEMPTED A RESTART (WINDMILL). UPON A SUCCESSFUL ENG RESTART, WE ADVISED ATC AND WITH THEIR PERMISSION, CLBED TO FL350 AND PROCEEDED TO FXE WITH NO FURTHER PROBS AND NORMAL INDICATIONS. OUR INITIAL CRUISE ALT WAS FL410 AND WE HAD JUST BEGAN TO EXPERIENCE MODERATE TO HVY TURB AT THE TIME OF THE ENG FAILURE.
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.