# NTSB NYC98LA023: Hiller UH-12D, N62316, Farmingdale, NJ, October 24, 1997 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: October 24, 1997, 13:00 local (18:00 UTC) - Place: Farmingdale, NJ - Location: 40.1868° N, 74.1246° W: Placed by OpenAirDocs at MONMOUTH EXEC (BLM), within about a mile (OpenAirDocs) - Nearby events: https://openairdocs.org/map.md?lat=40.1868&lon=-74.1246&mi=10 - Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report June 21, 2000 - Report: Approved by Office Director - NTSB case key (mKey): 39497 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC98LA023 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/39497/pdf - Page: https://openairdocs.org/ntsb/NYC98LA023 ## Probable cause The certificated flight instructor's inadequate supervision and failure to maintain directional control. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - in flight, hover - aircraft control - not maintained, pilot in command(cfi) (cause) - supervision - inadequate, pilot in command(cfi) (cause) - In flight collision with terrain/water, descent - emergency - terrain condition - grass ## Analysis The student pilot was hover taxing when the certificated flight instructor (CFI) rolled the throttle to the idle position and announced a 'simulated an engine failure.' The helicopter yawed to the left and pitched nose down. The CFI took control of the helicopter . The helicopter then spun to right, and the tail rotor contacted the ground. ## Factual narrative On October 24, 1997, at about 1300 eastern standard time, a Hiller UH-12D, N62316, was substantially damaged during a simulated engine failure from a hover at the Allaire Airport, Farmingdale, New Jersey. The certificated flight instructor (CFI), and student pilot (SP) were not injured. Visual meteorological conditions prevailed, and no flight plan had been filed for the instructional flight conducted under 14 CFR Part 91. In a written statement the CFI stated: "...The [SP] was on the controls, hovering the helicopter forward, in preparation for another quick stop, when I announced 'simulated engine failure' and rolled the throttle to the idle position. The helicopter yawed to the left and pitched nose down. I came on the controls, pressed full right pedal, pulled aft cyclic and applied power to recover. The helicopter spun to the right with the tail rotor contacting the ground. I rolled the throttle back to idle and the helicopter settled onto the ground...." The CFI's reported total flight experience in helicopters was 2,958 hours, of which 286 hours were in make and model. The SP's reported total flight experience was 21 hours, all in make and model. Examination of the helicopter by a Federal Aviation Administration Inspector revealed no pre-impact failure of the airframe or engine. ## Aircraft - Registration: [N62316](https://openairdocs.org/deregistered/N62316-2014-11-12), registration cancelled 2014-11-12, S/N 1391, built 1962 (OpenAirDocs) - Reported make and model: Hiller UH-12D - Registry model: [Hiller UH-12D](https://openairdocs.org/model/hiller-uh-12d) (registry code 4360118) (OpenAirDocs) - Registry engine: [Lycoming VO-435 series](https://openairdocs.org/engine/lycoming-vo-435-series) (registry code 41525, reciprocating) (OpenAirDocs) - Category: Helicopter - Serial number: 1391 - Airframe hours: 5792 - Engines: Lycoming VO435-A1C 250 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: Raco Helicopters - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, October 14, 1997, 9 hours before - Departed: BLM, NJ - Airport: BLM, Allaire ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 36; airline transport, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: helicopter, airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 3,194 total, 286 in this make and model, 2,009 as pilot in command, 196 in the last 90 days, 69 in the last 30 days, 3 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 260° at 7 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 59 °F, dew point 34 °F - Altimeter: 30.00 inHg - Observed at: BLM ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 19971024047579A](https://openairdocs.org/incident/19971024047579A), Oct 24, 1997: Hiller UH12D, Farmingdale, NJ, Substantial damage. (-16) The accident occured while the student was in a three foot hover. The CFI simulated an engine failure by rolling back the throttle. The student did not… From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.