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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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A C550 flight crew was unable to reduce thrust below 95% in descent. They declared an emergency; shut down the engine; and performed a single engine approach and landing.
| Attributes | |
| ACN | 785455 |
| Time | |
| Date | 200805 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 22000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Citation II S2/Bravo |
| Operating Under FAR Part | Part 91 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Flight Phase | cruise : level |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 28000 flight time type : 100 |
| ASRS Report | 785455 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : declared emergency flight crew : landed in emergency condition |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
During descent; left engine would not respond to throttle movement. RPM remained at 95%. An emergency was declared and at 4000 ft left engine was shut down using the fire button. An uneventful landing was made. There were 2 pilots and 3 passenger on board; all are fine. I was told that the throttle came loose from the engine because no wire had been used to safety the castle nut. This information was given to me by the aircraft manager.
Original NASA ASRS Text
Title: A C550 FLT CREW WAS UNABLE TO REDUCE THRUST BELOW 95% IN DESCENT. THEY DECLARED AN EMERGENCY; SHUT DOWN THE ENGINE; AND PERFORMED A SINGLE ENGINE APPROACH AND LANDING.
Narrative: DURING DSCNT; L ENG WOULD NOT RESPOND TO THROTTLE MOVEMENT. RPM REMAINED AT 95%. AN EMER WAS DECLARED AND AT 4000 FT L ENG WAS SHUT DOWN USING THE FIRE BUTTON. AN UNEVENTFUL LNDG WAS MADE. THERE WERE 2 PLTS AND 3 PAX ON BOARD; ALL ARE FINE. I WAS TOLD THAT THE THROTTLE CAME LOOSE FROM THE ENG BECAUSE NO WIRE HAD BEEN USED TO SAFETY THE CASTLE NUT. THIS INFO WAS GIVEN TO ME BY THE ACFT MGR.
Data retrieved from NASA's ASRS site as of May 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.