# NTSB CHI01LA324: Robinson R22 Beta, N214WW, East Troy, WI, September 26, 2001 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: September 26, 2001, 11:00 local (16:00 UTC) - Place: East Troy, WI - Coordinates: 42.780315, -88.389915 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=42.7803&lon=-88.3899&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor, 1 uninjured - Status: Completed, report December 6, 2002 - Report: Approved by Office Director - Parties: Federal Aviation Administration - NTSB case key (mKey): 53526 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI01LA324 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/53526/pdf - Page: https://openairdocs.org/ntsb/CHI01LA324 ## Probable cause The inadvertent dynamic rollover the student pilot encountered following his excessive control inputs during the takeoff portion of the instructional flight and the instructor not performing the remedial action necessary to reduce the excessive control inputs by the student. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Roll over, takeoff - aircraft control - excessive, dual student (cause) - dynamic rollover - inadvertent, dual student (cause) - remedial action - not performed, pilot in command(cfi) (cause) ## Analysis The helicopter sustained substantial damage on impact with terrain when the helicopter rolled over during a takeoff portion of the instructional flight. The instructor was uninjured and the student pilot sustained minor injuries. The flight instructor stated, "The student and I were practicing vertical takeoffs and landings. We use a two stage TO [take off] and lift off. The student was light on the skids and was attempting to correct for left drift and applied right cyclic with excessive collective. In a matter of 2 sec[onds] helicopter was on its right side. We were practicing at the airport on the airport property. The instructor stated that there was no mechanical malfunction or failure. ## Factual narrative On September 26, 2001, about 1100, central daylight time, a Robinson R22 Beta, N214WW, piloted by a certified flight instructor, sustained substantial damage on impact with terrain when the helicopter rolled over during a takeoff at East Troy Municipal Airport (57C), near East Troy, Wisconsin. The instructional flight was operating under 14 CFR Part 91. Visual meteorological conditions prevailed at the time of the accident. The instructor pilot was uninjured and the student pilot sustained minor injuries. No flight plan was on file. The local flight was originating from 57C at the time of the accident. The flight instructor stated: The student and I were practicing vertical takeoffs and landings. We use a two stage TO [take off] and lift off. The student was light on the skids and was attempting to correct for left drift and applied right cyclic with excessive collective. In a matter of 2 sec[onds] helicopter was on its right side. We were practicing at the airport on the airport property. The instructor stated that there was no mechanical malfunction or failure. ## Aircraft - Registration: [N214WW](https://openairdocs.org/deregistered/N214WW-2002-03-18), registration cancelled 2002-03-18, S/N 2393, built 1993 (OpenAirDocs) - Reported make and model: Robinson R22 Beta - Registry model: [Robinson Helicopter R22 BETA](https://openairdocs.org/model/robinson-helicopter-r22-beta) (registry code 7640110) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Helicopter - Serial number: 2393 - Airframe hours: 2941.4 - Engines: Lycoming O-320-B2C 160 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Operator: WW Helicopters LLC - Registered owner: Lloyd Aviation Inc. - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, June 29, 2001, 77 hours before - Departed: 57C, East Troy, WI - Airport: 57C, East Troy Muni ## Flight crew As NTSB recorded them. NTSB leaves out names. - Flight instructor; age 47; injuries: none; airline transport, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane, helicopter; medical: class 1, valid medical--w/ waivers/lim; last flight review July 12, 2001; seat: left; flight hours: 100 total, 760 in this make and model, 10,000 as pilot in command - Student pilot; age 44; injuries: minor; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; last flight review January 1, 2001; seat: right; flight hours: 350 total, 4 in this make and model, 250 as pilot in command, 4 in the last 90 days, 4 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 300° at 11 knots, gusting 18 - Visibility: 10 statute miles - Lowest ceiling: 12,000 ft broken - Temperature: 61 °F, dew point 45 °F - Altimeter: 29.96 inHg - Observed at: BUU, 7 nm away ## 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 20010926027039A](https://openairdocs.org/incident/20010926027039A), Sep 26, 2001: Robsin R22BETA, East Troy, WI, No damage. (-23) Mr. Henderson was receiving dual instruction in performing a "2-stage liftoff." Mr. Henderson added excessive collecting and moderate right cyclic… 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.