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TB20 pilot discovers failed throttle linkage at 9;000 feet and with ATC assistance a successful emergency landing is accomplished with the engine shut down on short final. A bolt was found to have fallen out of the throttle linkage. A rebuilt engine had been installed approximately eight months ago.
| Attributes | |
| ACN | 1050497 |
| Time | |
| Date | 201211 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Trinidad TB-20 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Route In Use | Direct |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Reciprocating Engine Assembly |
| Person 1 | |
| Function | Single Pilot Pilot Flying |
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Commercial |
| Experience | Flight Crew Last 90 Days 17 Flight Crew Total 4000 Flight Crew Type 900 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
While on an IFR flight plan flying at 9;000 feet; my engine stopped responding to the throttle. Engine still running; I declared an emergency and received support from approach to descend to land at a suitable airport. The air traffic controller was excellent and provided outstanding assistance. Landing was safely accomplished after engine was shut down on short final. I called ATC on ground with number provided by controller in air to tell them I was down safely. They did not ask for any more information. After landing; a certified a&P mechanic removed the aircraft cowl and discovered a bolt had fallen out of the throttle linkage. He replaced and reinstalled a new appropriate bolt and installed a cotter pin in the bolt. He inspected the rest of the linkages. We ops checked the engine and it worked perfectly. He certified it for flight and after I ground checked the engine; I re-filed my IFR flight plan and was on my way. Rest of the trip was uneventful. The date of my last annual; they installed a lycoming factory remanufactured engine. The reason I am filing this report is that today I got an email from FAA safety regarding similar problems on helicopters (problems with connectors). While I have no evidence the bolt was not installed correctly; I wanted to get this incident in your data base for our general aviation records.
Original NASA ASRS Text
Title: TB20 pilot discovers failed throttle linkage at 9;000 feet and with ATC assistance a successful emergency landing is accomplished with the engine shut down on short final. A bolt was found to have fallen out of the throttle linkage. A rebuilt engine had been installed approximately eight months ago.
Narrative: While on an IFR flight plan flying at 9;000 feet; my engine stopped responding to the throttle. Engine still running; I declared an emergency and received support from Approach to descend to land at a suitable airport. The Air Traffic Controller was excellent and provided outstanding assistance. Landing was safely accomplished after engine was shut down on short final. I called ATC on ground with number provided by controller in air to tell them I was down safely. They did not ask for any more information. After landing; a certified A&P Mechanic removed the aircraft cowl and discovered a bolt had fallen out of the throttle linkage. He replaced and reinstalled a new appropriate bolt and installed a cotter pin in the bolt. He inspected the rest of the linkages. We ops checked the engine and it worked perfectly. He certified it for flight and after I ground checked the engine; I re-filed my IFR flight plan and was on my way. Rest of the trip was uneventful. The date of my last annual; they installed a Lycoming Factory Remanufactured engine. The reason I am filing this report is that today I got an email from FAA Safety regarding similar problems on helicopters (problems with connectors). While I have no evidence the bolt was not installed correctly; I wanted to get this incident in your data base for our General Aviation Records.
Data retrieved from NASA's ASRS site as of July 2013 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.