# NTSB CHI97LA099: Piper PA-22, N9231D, Oshkosh, WI, April 4, 1997 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: April 4, 1997, 13:41 local (19:41 UTC) - Place: Oshkosh, WI - Coordinates: 44.060527, -88.539749 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=44.0605&lon=-88.5397&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report August 29, 1997 - Report: Approved by Office Director - NTSB case key (mKey): 10539 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI97LA099 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/10539/pdf - Page: https://openairdocs.org/ntsb/CHI97LA099 ## Probable cause the pilot's inadequate compensation for the wind conditions, and his failure to maintain proper runway alignment, which resulted in a subsequent nose over. The gusty crosswind condition was a related factor. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - on ground/water, landing - roll - weather condition - crosswind (contributing factor) - weather condition - gusts (contributing factor) - compensation for wind conditions - inadequate, pilot in command (cause) - proper alignment - not maintained, pilot in command (cause) - Nose over, landing ## Analysis The pilot reported that he checked the current weather via the Wittman Field Automatic Terminal Information Service (ATIS) Information. He reported there was a 'crosswind from south west at 14 knots and gusting.' The pilot performed a 'crosswind landing and landed normally on runway 27.... During rollout a gust of wind came from the left and the left went up.' He corrected with aileron 'but was unable to compensate for the gusts.' The airplane departed the runway to the right side 'and flipped, coming to rest inverted.' The aircraft's wings sustained substantial damage. Examination of the airplane revealed no evidence of a mechanical malfunction. ## Factual narrative On April 4, 1997, at 1341 central standard time, a Piper PA-22, N9231D, operated by Star Aviation, Inc., was substantially damaged when it nosed over during the landing roll in Oshkosh, Wisconsin. The private pilot reported minor injuries. The local, personal, 14 CFR Part 91 flight was conducted in visual meteorological conditions and no flight plan was filed. The flight originated from Oshkosh, Wisconsin, at 1300 central standard time. The pilot reported that he checked the current weather via the Wittman Field Automatic Terminal Information Service (ATIS) Information. The pilot reported there was a "crosswind from south west at 14 knots and gusting." The pilot performed a "crosswind landing and landed normally on runway 27.... During rollout a gust of wind came from the left and the left went up." He corrected with aileron "but was unable to compensate for the gusts." The airplane departed the runway to the right side "and flipped, coming to rest inverted." The Federal Aviation Administration (FAA) Inspector, who examined the accident site indicated the airplane had "flipped over" and the wings had sustained substantial damage. No evidence of preimpact mechanical malfunction was reported. ## Aircraft - Registration: [N9231D](https://openairdocs.org/deregistered/N9231D-1998-05-20), registration cancelled 1998-05-20, S/N 226291 (OpenAirDocs) - Reported make and model: Piper PA-22 - Registry model: [Piper PA-22-160](https://openairdocs.org/model/piper-pa-22-160) (registry code 7102214) (OpenAirDocs) - Category: Airplane - Serial number: 22-6291 - Airframe hours: 3288 - Engines: Lycoming O-320-B2B 160 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Star Aviation, Inc. - Airworthiness certificate: Standard, Normal - Last inspection: Annual, March 3, 1997, 24 hours before - Departed: OSH - Airport: OSH, Wittman Field, runway 27, 8,000 × 150 ft, concrete ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 43; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 83 total, 76 in this make and model, 47 as pilot in command, 3 in the last 90 days, 1 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 220° at 13 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 70 °F, dew point 46 °F - Altimeter: 29.00 inHg - Observed at: OSH, 1 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 19970404005039A](https://openairdocs.org/incident/19970404005039A), Apr 4, 1997: Piper PA22160, Oshkosh, WI, Substantial damage. Aircraft flipped over on landing rollout. (-23) pilot lost directional control while landing on runway 27 at Oshkosh, WI. Aircraft veered to the right and… 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.