Narrative:

The chief CFI was administering a proficiency check to a CFI. While doing 'simulated emergency operations the pilot in command and acting CFI pulled the engine to 'simulate' an emergency engine failure. We were approximately at 5;000 ft MSL. The examinee went through his normal emergency checklist. The examiner was clearing the engine every 15 seconds and maintained about 1500 RPM throughout this practice maneuver. After cycling the engine for the 3rd time; the examiner went to apply power (clearing the engine) to maintain engine temperature when she noticed that the throttle was jammed approximately 1/4 inch in the open throttle position. Examiner then tried to push and pull the throttle lever and checked the throttle lock and friction. At that point she asked the examinee for his assistance; as he was the flying pilot at this time. He then also tried to push and pull the throttle lever and checked the throttle friction; which was taut. He then loosened it. At this time; the examiner took control of the plane as the pilot in command and while the examinee continued to attempt to move the throttle lever. The examiner told the examinee to continued attempting to troubleshoot the throttle until the examiner made the decision at about 200 ft AGL at which time he could pull the mixture; as they were unsuccessful in unjamming the throttle. We were committed to land. At this point in time; the examiner told the examinee that we had an 'actual emergency; real world.' the examiner picked the field to land heading towards the north. The winds were light. The examiner flew the plane and due to the fact that we had in partial power (stuck lever) was concerned about not overshooting the field and wanted to slow the plane down. The examiner requested the flaps and gear extended. At 200 ft AGL we were committed to land and pull the mixture; shut off the fuel; the mags; and the master switch. The examiner held the plane off and we came to a quick stop. Landed safely with no injuries or apparent damage to plane. Both pilots double-checked that all systems were shut down and evacuated the plane. During all phases of flight; the throttle was operating normally. Weather conditions were VFR conditions.

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Original NASA ASRS Text

Title: A M20 throttle stuck while power was reduced during a simulated engine failure. An emergency was subsequently declared followed by an uneventful off airport landing.

Narrative: The Chief CFI was administering a proficiency check to a CFI. While doing 'simulated emergency operations the pilot in command and acting CFI pulled the engine to 'simulate' an emergency engine failure. We were approximately at 5;000 FT MSL. The Examinee went through his normal emergency checklist. The Examiner was clearing the engine every 15 seconds and maintained about 1500 RPM throughout this practice maneuver. After cycling the engine for the 3rd time; the Examiner went to apply power (clearing the engine) to maintain engine temperature when she noticed that the throttle was jammed approximately 1/4 inch in the open throttle position. Examiner then tried to push and pull the throttle lever and checked the throttle lock and friction. At that point she asked the Examinee for his assistance; as he was the flying pilot at this time. He then also tried to push and pull the throttle lever and checked the throttle friction; which was taut. He then loosened it. At this time; the Examiner took control of the plane as the pilot in command and while the Examinee continued to attempt to move the throttle lever. The Examiner told the Examinee to continued attempting to troubleshoot the throttle until the Examiner made the decision at about 200 FT AGL at which time he could pull the mixture; as they were unsuccessful in unjamming the throttle. We were committed to land. At this point in time; the Examiner told the Examinee that we had an 'actual emergency; real world.' The Examiner picked the field to land heading towards the north. The winds were light. The Examiner flew the plane and due to the fact that we had in partial power (stuck lever) was concerned about not overshooting the field and wanted to slow the plane down. The Examiner requested the flaps and gear extended. At 200 FT AGL we were committed to land and pull the mixture; shut off the fuel; the mags; and the master switch. The Examiner held the plane off and we came to a quick stop. Landed safely with no injuries or apparent damage to plane. Both pilots double-checked that all systems were shut down and evacuated the plane. During all phases of flight; the throttle was operating normally. Weather conditions were VFR conditions.

Data retrieved from NASA's ASRS site as of April 2012 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.