# NTSB IAD05CA086: Porterfield CP-65, N37709, Jaffrey, NH, June 24, 2005 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Data collection · Final report - Date: June 24, 2005, 14:30 local (18:30 UTC) - Place: Jaffrey, NH - Coordinates: 42.805, -72.003051 - Nearby events: https://openairdocs.org/map.md?lat=42.8050&lon=-72.0031&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report October 27, 2005 - Report: Approved by Office Director - NTSB case key (mKey): 61819 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=IAD05CA086 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/61819/pdf - Page: https://openairdocs.org/ntsb/IAD05CA086 ## Probable cause The student pilot's inadequate compensation for wind conditions and his failure to maintain directional control. A factor in the accident was the drop off/descending embankment at the runway's edge. ## 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 - compensation for wind conditions - inadequate, pilot in command (cause) - directional control - not maintained, pilot in command (cause) - On ground/water encounter with terrain/water, landing - roll - terrain condition - drop-off/descending embankment (contributing factor) ## Analysis The student pilot entered the downwind leg of the traffic pattern, and after viewing the windsock, decided to land on the opposite runway. The airplane landed with a reported crosswind of 11 knots gusting to 16 knots. After lowering the tailwheel to the runway, the airplane encountered a crosswind gust that "spun the airplane around like a toy." The student straightened the airplane as it departed the left edge of the runway, where the grade dropped immediately down an embankment. The airplane struck terrain at the bottom of the embankment, nosed over, and came to rest inverted. The student pilot stated that there were no mechanical deficiencies with the airplane. ## Factual narrative On June 24, 2005, at 1430 eastern daylight time, a Porterfield CP-65, N37709, was substantially damaged when it departed the left side of the runway after landing at Jaffrey Airport (AFN), Jaffrey, New Hampshire. The certificated student pilot received minor injures. Visual meteorological conditions prevailed for the solo instructional flight that departed the Fitchburg Municipal Airport (FIT), Fitchburg, Massachusetts, about 1400. No flight plan was filed for the flight conducted under 14 CFR Part 91. The student provided both a written statement and a telephone interview. He explained that the purpose of the flight was to practice for a Federal Aviation Administration (FAA) private pilot practical examination that he had scheduled. The pilot monitored the Automated Surface Observing System (ASOS) as he approached the Jaffrey Airport, and entered the downwind leg of the traffic pattern to land on Runway 16. After viewing the windsock, he amended his decision, and decided to land on runway 34 instead. The pilot estimated that there was a direct crosswind of between 10 and 15 knots, as he performed a "wheel landing" in the tailwheel-configured airplane. The main gear touched down at 65 knots, and the tailwheel was lowered to the runway at 45 knots. At that time, the airplane was "hit by a gust that spun [the airplane] around like a toy." The pilot straightened the airplane as it departed the left edge of the runway, where the grade dropped immediately down an embankment. The airplane struck terrain at the bottom of the embankment, nosed over, and came to rest inverted. The pilot stated that he frequently landed to runways that experienced significant crosswinds, because he looked forward to the challenge, and because he "didn't want to be one of those pilots that only flies when the weather is perfect." The pilot was issued an FAA second-class medical certificate on September 9, 2004. He reported 102 total hours of flight experience, 63 hours of which were in make and model. The pilot reported no mechanical deficiencies with the airplane. When asked how the accident might have been avoided, the pilot responded, "I will avoid airports that are not on level ground from now on unless the winds are very light." At 1452, the weather reported at Jaffrey Airport included winds from 220 degrees at 11 knots, gusting to 16 knots. ## Aircraft - Registration: [N37709](https://openairdocs.org/aircraft/N37709), registered now, S/N 938 (OpenAirDocs) - Reported make and model: Porterfield CP-65 - Registry model: [Porterfield CP-65](https://openairdocs.org/model/porterfield-cp-65) (registry code 6480118) (OpenAirDocs) - Registry engine: [Continental A&C65 series](https://openairdocs.org/engine/continental-a-c65-series) (registry code 17003, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 938 - Engines: Continental A65 65 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: Bruce A. Morley - Airworthiness certificate: Standard, Normal - Departed: FIT, FITCHBURG, MA - Destination: AFN, Jaffrey, NH - Airport: AFN, Jaffrey Muni-Silver Ranch, runway 34, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 54; student; medical: class 2; flight hours: 102 total, 63 in this make and model, 28 in the last 90 days, 22 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 220° at 11 knots, gusting 16 ## 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 20050624012479A](https://openairdocs.org/incident/20050624012479A), Jun 24, 2005: Norwst CP65PORTFLD, Jaffrey, NH, Substantial damage. (-23) On 6-24-2005, at 1330 EDT, a porterfield CP-65, N37709, piloted by [privacy data omitted] during landing on rwy 34 at jaffery, NH (afn), lost directional… 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.