<< >> NASA ASRS Report 1120378, September 2013

M20 pilot reports a throttle failure during a practice VOR approach with an instructor on board. The power is fixed at 15 inches map. The engine is shut down on final but the resulting approach is high and fast resulting in a bounced landing and a prop strike. The engine had been recently overhauled.

Attributes
ACN	1120378
Time
Date	201309
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	M-20 B/C Ranger
Operating Under FAR Part	Part 91
Flight Phase	Landing
Route In Use	Visual Approach
Flight Plan	None
Component
Aircraft Component	Throttle/Power Level
Person 1
Function	Pilot Flying
Qualification	Flight Crew Private
Experience	Flight Crew Last 90 Days 3 Flight Crew Total 216 Flight Crew Type 95
Events
Anomaly	Aircraft Equipment Problem Critical Ground Event / Encounter Ground Strike - Aircraft

Narrative:

While practicing a VOR approach with a flight instructor; engine response to throttle was lost with engine at 15 inches of manifold pressure. Gear was raised and flight was continued to position for landing. On final approach; engine was shut down and landing gear and flaps deployed. Altitude required a steeper than normal approach resulting in higher than desired airspeed to reach the runway. There was a bounce on landing resulting in a minor prop strike. Without throttle control a go-around was not an option. This occurrence does not meet the standard for an aircraft accident or serious incident as defined in part 830. This aircraft had been flown for 20 hours since overhaul. It was later determined that the throttle cable was disconnected from the carburetor; but no parts were discovered. The throttle connection had been checked by the mechanic and by another pilot prior to the aircraft being flown.

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Original NASA ASRS Text

Title: M20 pilot reports a throttle failure during a practice VOR approach with an instructor on board. The power is fixed at 15 inches MAP. The engine is shut down on final but the resulting approach is high and fast resulting in a bounced landing and a prop strike. The engine had been recently overhauled.

Narrative: While practicing a VOR approach with a flight instructor; engine response to throttle was lost with engine at 15 inches of manifold pressure. Gear was raised and flight was continued to position for landing. On final approach; engine was shut down and landing gear and flaps deployed. Altitude required a steeper than normal approach resulting in higher than desired airspeed to reach the runway. There was a bounce on landing resulting in a minor prop strike. Without throttle control a go-around was not an option. This occurrence does not meet the standard for an aircraft accident or serious incident as defined in Part 830. This aircraft had been flown for 20 hours since overhaul. It was later determined that the throttle cable was disconnected from the carburetor; but no parts were discovered. The throttle connection had been checked by the Mechanic and by another pilot prior to the aircraft being flown.

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.