# NTSB SEA00LA189: Robinson R-22, N202RP, Corvallis, OR, September 25, 2000 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: September 25, 2000, 15:00 local (22:00 UTC) - Place: Corvallis, OR - Coordinates: 44.460456, -123.340782 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=44.4605&lon=-123.3408&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report May 18, 2001 - Report: Approved by Office Director - NTSB case key (mKey): 50342 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA00LA189 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/50342/pdf - Page: https://openairdocs.org/ntsb/SEA00LA189 ## Probable cause The instructor pilot's delayed remedial action. Factors include the student's failure to properly initiate a flare, and the soft terrain immediately adjacent to the taxiway. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Nose over, landing - roll - flare - not performed, dual student (contributing factor) - remedial action - delayed, pilot in command(cfi) (cause) - terrain condition - soft (contributing factor) ## Analysis During a practice autorotation to a power recovery, the student failed to properly initiate a flare. Because the CFI did not intervene soon enough, the helicopter inadvertently made contact with the taxiway surface and bounced back into the air. The CFI took control of the aircraft, but because the rotor rpm was low, the helicopter settled to the taxiway a second time. At that point, the instructor transitioned to a run-on landing, but one skid slid off the side of the runway and encountered soft terrain. The skid then sank into the terrain and the aircraft nosed over. ## Factual narrative On September 25, 2000, approximately 1500 Pacific daylight time, a Robinson R-22 helicopter, N202RP, nosed over during a run-on landing at Corvallis Airport, Corvallis, Oregon. The certified flight instructor (CFI) and his student, who held a commercial pilot certificate, were not injured, but the aircraft, which was owned and operated by Pacific Rim Aviation, sustained substantial damage. The 14 CFR Part 91 local instructional flight, which had been airborne for about 45 minutes, was being operated in visual meteorological conditions. No flight plan had been filed, and there was no report of an ELT activation. According to the CFI, the student was practicing a 180 degree autorotation to a planned power recovery over a taxiway adjacent to the runway. During the last part of the descent, the rotor rpm became low and the rotor low-rpm horn sounded. Although the CFI mentioned this to the student, the CFI was not concerned about the situation because he expected the rpm to increase when the student flared and began the power recovery. At the point where the student should have initiated his flare, he leveled the helicopter, but did not apply control inputs to stop its forward motion. As he attempted a power recovery, the helicopter continued to sink toward the ground and inadvertently made contact with the taxiway surface. At that point, the instructor took over, applied power, and tried to keep the aircraft from impacting the terrain a second time. Because the rotor rpm was still low, the aircraft settled to the taxiway surface a second time. At that point, the CFI transitioned to a run-on landing along the west edge of the taxiway. Although the helicopter was sliding along about 40 to 50 knots, it appeared to the instructor that it would slide to a stop on the taxiway. However, one skid slid off the left side of the asphalt surface, where it encountered soft terrain. The skid then sank into the terrain and the helicopter nosed over, coming to rest on its left side. ## Aircraft - Registration: N202RP (not matched to a registry record) - Reported make and model: Robinson R-22 - Category: Helicopter - Serial number: 1030 - Airframe hours: 7612 - Engines: Lycoming O-320-B2C 131 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: Pacific Rim Aviation, LLC - Airworthiness certificate: Standard, Normal - Last inspection: Annual, August 19, 2000, 56 hours before - Departed: CVO - Airport: CVO, Corvallis Airport, runway 35, 3,000 × 40 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 55; commercial; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane, helicopter; medical: class 2, valid medical--w/ waivers/lim; seat: right; flight hours: 3,583 total, 259 in this make and model, 3,258 as pilot in command, 182 in the last 90 days, 63 in the last 30 days, 7 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 40° at 5 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 72 °F 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.