# NTSB SEA04CA122: Robinson R22 Mariner, N856HA, Hillsboro, OR, July 5, 2004 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Data collection · Final report - Date: July 5, 2004, 15:00 local (22:00 UTC) - Place: Hillsboro, OR - Coordinates: 45.595001, -122.933334 - Nearby events: https://openairdocs.org/map.md?lat=45.5950&lon=-122.9333&mi=10 - Phase of flight: [Uncontrolled descent](https://openairdocs.org/ntsb-phases/650) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor, 1 uninjured - Status: Completed, report September 29, 2004 - Report: Approved by Office Director - Parties: FAA-FSDO - NTSB case key (mKey): 59575 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA04CA122 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/59575/pdf - Page: https://openairdocs.org/ntsb/SEA04CA122 ## Probable cause The pilot's failure to maintain aircraft control resulting in an uncontrolled descent and subsequent roll over. Low altitude flight and the pilot's encounter with settling with power were contributing factors. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - in flight, descent - uncontrolled - aircraft control - not maintained, pilot in command(cfi) (cause) - settling with power - encountered, pilot in command(cfi) (contributing factor) - In flight collision with terrain/water, descent - uncontrolled - terrain condition - ground - low altitude flight/maneuver, pilot in command(cfi) (contributing factor) - Roll over, descent - uncontrolled ## Analysis The flight instructor reported that they were in the process of practicing "maximum performance takeoff abort - backwards." The student was on the controls during the maximum performance takeoff phase to an altitude of about 150 feet above ground level, and the instructor took over the controls to demonstrate the abort procedures. The instructor took the controls just prior to call for the abort. When the abort phase began, the instructor applied aft cyclic and slightly lowered the collective. The helicopter had been in a tail low attitude and started to descend into "settling with power." The instructor applied forward cyclic and lowered the collective, however the helicopter did not have sufficient altitude to level out or gain airspeed to recover before impacting the ground on the right side skid. The helicopter pivoted around about 180 degrees then rolled over onto its left side. ## Factual narrative On July 5, 2004, at 1500 Pacific daylight time, a Robinson R-22 Mariner, N856HA, registered to and operated by Hillsboro Aviation as a 14 CFR Part 91 instructional flight, experienced a hard landing followed by a rollover at the Portland-Hillsboro Airport, Hillsboro, Oregon. Visual meteorological conditions prevailed at the time and no flight plan was filed for the local instructional flight. The helicopter was substantially damaged and the certified flight instructor was not injured, while the commercial pilot (student) received minor injuries. In a written statement, the flight instructor reported that they were in the process of practicing "maximum performance takeoff abort - backwards." The student was on the controls during the maximum performance takeoff phase to an altitude of about 150 feet above ground level, and the instructor took over the controls to demonstrate the abort procedures. The instructor took the controls just prior to call for the abort. When the abort phase began, the instructor applied aft cyclic and slightly lowered the collective. The helicopter had been in a tail low attitude and started to descend into "settling with power." The instructor applied forward cyclic and lowered the collective, however the helicopter did not have sufficient altitude to level out or gain airspeed to recover before impacting the ground on the right side skid. The helicopter pivoted around about 180 degrees then rolled over onto its left side. ## Aircraft - Registration: [N856HA](https://openairdocs.org/deregistered/N856HA-2011-01-18), registration cancelled 2011-01-18, S/N 1894M (OpenAirDocs) - Reported make and model: Robinson R22 Mariner - Registry model: [Robinson Helicopter R22 MARINER](https://openairdocs.org/model/robinson-helicopter-r22-mariner) (registry code 7640115) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Helicopter - Serial number: 1894M - Engines: Lycoming O-320-B2C reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Operator: Hillsboro Aviation Inc. - Registered owner: Hillsboro Aviation Inc. - Airworthiness certificate: Standard, Normal - Departed: HIO, Hillsboro, OR - Destination: HIO - Airport: HIO, Portland-Hillsboro ## Flight crew As NTSB recorded them. NTSB leaves out names. - Flight instructor; age 33; flight instructor, commercial; medical: class 1; flight hours: 2,187 total, 1,903 in this make and model, 176 in the last 90 days, 13 in the last 30 days - Pilot; age 34; commercial; airplane ratings: single-engine land; medical: class 2 ## Weather - Conditions: Visual (VMC), Day ## 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 20040705012679A](https://openairdocs.org/incident/20040705012679A), Jul 5, 2004: Robsin R22MARINER, Portland, OR, Substantial damage. (-23) On an instructional flight the instructor pilot attempted to demonstrate an aborted maximum performance takeoff to the student flight instructor from a… ## Other investigations on N856HA (1) 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. - [NTSB WPR10CA478](https://openairdocs.org/ntsb/WPR10CA478), Sep 30, 2010: Robinson R22 (N856HA), Portland, OR, substantial damage. Probable cause: The student pilot's decision to hover-taxi behind a jet, resulting in the helicopter encountering jet wash and rolling over. 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.