IAD05LA112
2005-07-31 · Mount Holly, New Jersey, United States · Minor · 1 aircraft · Status: Completed
Airport VAY
Aircraft involved
Probable cause & findings
The flight instructor's delayed remedial action. A factor was the flight instructor's failure to ensure that both pilots knew who was performing the maneuver.
Factual narrative
On July 31, 2005, about 1045 eastern daylight time, a Schweizer 269C, N399HF, was substantially damaged during a training maneuver at South Jersey Regional Airport (VAY), Mount Holly, New Jersey. The certificated flight instructor and student pilot incurred minor injuries. Visual meteorological conditions prevailed, and no flight plan had been filed for the local flight, which originated at the airport. The instructional flight was conducted under 14 CFR Part 91. According to the flight instructor, they had been flying for about 45 minutes when "the student was informed that we were doing forced landings." During the takeoff climb, about 500 feet, the flight instructor rolled down the throttle, and the student entered an autorotation. "The glide was good," but the helicopter headed toward a line of trees, so the student turned it to the right, toward an open field. "The collective was raised to extend our glide, but the rotor rpm was decreasing and the forward airspeed had slowed also." The helicopter cleared the trees, but "at this point, the rotor rpm was below the power off range [and] the helicopter was approximately 60 feet agl." The flight instructor then "got on the controls, lowered the collective, rolled on the throttle, and flared the helicopter." The helicopter continued its descent, the tail hit the ground, and the helicopter subsequently impacted the ground in a level attitude, then rolled over. According to the student pilot, before the flight, he and the instructor were discussing his upcoming "check ride." They discussed an engine failure during takeoff, which the student pilot had not previously practiced, and the flight instructor advised him that he would demonstrate it. Before the maneuver occurred, the student pilot was at the controls, and when he had last noticed, the helicopter was headed straight, about 250 feet msl, and 30 knots of airspeed. The helicopter was climbing, and the flight instructor stated that he was "cutting the throttle." At the time, the student thought that the instructor was going to demonstrate the maneuver. After the throttle cut, at what the student estimated was then 350 to 400 feet msl, the helicopter started "descending at a very steep rate." The student pilot thought they were going to hit some trees, so he advised the instructor, "and he did not immediately react." About 2 seconds later, the instructor stated "oh", and the student pilot "noticed [that] he tried to miss the trees and glide forward, and all I could see was our aircraft descending into the ground." The student pilot also stated that the flight instructor had the controls during the maneuver, and that the student pilot was not in control of the helicopter when the throttle was cut. The flight instructor "never explained where we were going to land on this maneuver or where it was going was going to take place. All [he] said was that he was going to show me how the maneuver was performed." Prior to the helicopter instructional flight, the flight instructor and the student pilot discussed a loss of engine power during takeoff. The student pilot, who had not previously performed the maneuver, thought the flight instructor was going to demonstrate it. During the flight, while the helicopter was climbing through 400-500 feet, the flight instructor advised the student of the pending simulated engine failure, and "rolled down" the throttle. The helicopter commenced an autorotation, with the flight instructor thinking the student pilot was at the controls, and the student pilot thinking the flight instructor was at the controls. During the autorotation, when the helicopter appeared to be headed for some trees, "the collective was raised to extend the glide, but the rotor rpm was decreasing and the forward airspeed had slowed also." The helicopter cleared the trees, but at 60 feet above the ground, the rotor rpm was below the power off range. The flight instructor then "got on the controls, lowered the collective, rolled on the throttle, and flared the helicopter." The helicopter continued its descent, the tail hit the ground, and the helicopter impacted the ground in a level attitude, then rolled over. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2005_IAD05LA112.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
Search this event elsewhere
External sources are reported, not agency: signal that something happened, not fact about what happened.
- TallyAero Live Wire Aviation press
- NTSB CAROL Agency ↗
- NTSB Docket Agency ↗
- Aviation Safety Network Aviation press ↗
- Kathryn's Report Aviation press ↗
- Aviation Herald Aviation press ↗
- AVweb Aviation press ↗
- Pilots of America Community ↗
- Reddit /r/flying Community ↗
- FlightAware Aviation press ↗
- AOPA accident database Aviation press ↗
- Google News News ↗
- DuckDuckGo News ↗
Related research
Matched on aircraft type or causal vocabulary (engine failure). All research papers
- arXiv 2022 · arXiv preprint Multi-level Adaptation for Automatic Landing with Engine Failure under Turbulent Weather
This paper addresses efficient feasibility evaluation of possible emergency landing sites, online navigation, and path following for automatic landing under engine-out failure subject to turbulent wea…
- NASA NTRS 2019 · Conference Paper Simulation of Liquid Rocket Engine Failure Propagation Using Self-Evolving Scenarios
Traditional probabilistic risk assessment approaches often require failure scenarios to be explicitly defined through event sequences that are then quantified as part of the integrated analysis.
- NASA NTRS 2019 · Conference Paper Rocket engine failure detection using system identification techiques
The theoretical foundation and application of two univariate failure detection algorithms to Space Shuttle Main Engine (SSME) test firing data is presented.
- NASA NTRS 2019 · Conference Paper Rocket engine failure detection using system identification techniques
The theoretical foundation and application of two univariate failure detection algorithms to Space Shuttle Main Engine (SSME) test firing data is presented.
- NASA NTRS 2019 · Technical Memorandum (TM) A simulator investigation of engine failure compensation for powered-lift STOL aircraft
A piloted simulator investigation of various engine failure compensation concepts for powered-lift STOL aircraft was carried out at the Ames Research Center.
- Semantic Scholar 2019 · Article (AIAA Scitech 2019 Forum) Impact of Engine Failure Constraints on the Initial Sizing of Hybrid-Electric GA Aircraft
Potential advantages of hybrid-electric aircraft are fuel savings, lower emissions, and reduced noise. Since these aircraft generally apply multiple power sources, they can also be designed to sustain…