NTSB Identification: IAD05LA038.
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Accident occurred Tuesday, February 15, 2005 in Penn Yan, NY
Probable Cause Approval Date: 06/08/2005
Aircraft: Grumman G-21A, registration: N327
Injuries: 2 Minor.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

The purpose of the flight was for the flight instructor to provide multiengine airplane training, in a late 1930's vintage amphibious airplane, to his brother, a single engine airplane rated private pilot. No published performance data was available for the airplane, and according to the flight instructor, much of what he knew about the performance of the airplane he learned from previous flights. Just after takeoff on the accident flight, and about 600 feet above ground level (agl), and as the pilot was retracting the landing gear and starting a left turn to the crosswind leg of the traffic pattern, the flight instructor retarded the right throttle in order to simulate a failure of the right engine. The pilot executed the procedures for an in-flight engine failure and the instructor looked out of the window to check for traffic in the airport traffic pattern. The flight instructor then heard the pilot state "I am at blue line but losing altitude." The flight instructor continued to scan for traffic and moved the right throttle forward to about the "half throttle" position. The pilot could not recall if he had adjusted either of the power controls after the initial application of power for takeoff. The airplane continued to descend, impacted the ground, and caught fire.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

The flight instructor's inadequate planning/decision and his remedial action to conduct or recover from a simulated emergency procedure.

Full narrative available

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