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Flight crew of air taxi LR35 has engine flameout at FL410. They receive clearance to descend for restart. Extremely turbulent air seems to be the cause and they had not utilized their continuous ignition in response to such extreme turbulence.
| Attributes | |
| ACN | 397154 |
| Time | |
| Date | 199803 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : lal |
| State Reference | FL |
| Altitude | msl bound lower : 25000 msl bound upper : 41000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zjx |
| Operator | common carrier : air taxi |
| Make Model Name | Learjet 35 |
| Operating Under FAR Part | Part 135 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air taxi |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : cfi pilot : commercial |
| Experience | flight time last 90 days : 45 flight time total : 1675 flight time type : 211 |
| ASRS Report | 397154 |
| Person 2 | |
| Affiliation | company : air taxi |
| 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 other flight crewa |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Our aircraft flamed out climbing from FL410 to FL430. The aircraft is certified for FL450. We were climbing to get out of constant moderate chop. When we initiated the climb, our engine (left) flamed out. We immediately ran the appropriate checklists, we descended to the relight envelope, and started the engine. No emergency was declared. The flight proceeded without further incident. I feel a major contributing factor was turbulence. Use of air ignition may have prevented this situation. Callback conversation with reporter revealed the following information: reporter states that they received ATC clearance and descended to FL250 where they were able to restart. There was very turbulent air and reporter feels they hit a very rough spot which caused the flameout. At the time they were trying to climb to avoid the turbulence. The aircraft was an LR35.
Original NASA ASRS Text
Title: FLC OF AIR TAXI LR35 HAS ENG FLAMEOUT AT FL410. THEY RECEIVE CLRNC TO DSND FOR RESTART. EXTREMELY TURBULENT AIR SEEMS TO BE THE CAUSE AND THEY HAD NOT UTILIZED THEIR CONTINUOUS IGNITION IN RESPONSE TO SUCH EXTREME TURB.
Narrative: OUR ACFT FLAMED OUT CLBING FROM FL410 TO FL430. THE ACFT IS CERTIFIED FOR FL450. WE WERE CLBING TO GET OUT OF CONSTANT MODERATE CHOP. WHEN WE INITIATED THE CLB, OUR ENG (L) FLAMED OUT. WE IMMEDIATELY RAN THE APPROPRIATE CHKLISTS, WE DSNDED TO THE RELIGHT ENVELOPE, AND STARTED THE ENG. NO EMER WAS DECLARED. THE FLT PROCEEDED WITHOUT FURTHER INCIDENT. I FEEL A MAJOR CONTRIBUTING FACTOR WAS TURB. USE OF AIR IGNITION MAY HAVE PREVENTED THIS SIT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATES THAT THEY RECEIVED ATC CLRNC AND DSNDED TO FL250 WHERE THEY WERE ABLE TO RESTART. THERE WAS VERY TURBULENT AIR AND RPTR FEELS THEY HIT A VERY ROUGH SPOT WHICH CAUSED THE FLAMEOUT. AT THE TIME THEY WERE TRYING TO CLB TO AVOID THE TURB. THE ACFT WAS AN LR35.
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.