ASN Wikibase Occurrence # 214672
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| Date: | Saturday 25 August 2018 |
| Time: | 15:20 |
| Type: |  Piper PA-22-150 Tri-Pacer |
| Owner/operator: | Private |
| Registration: | N6936B |
| MSN: | 22-4215 |
| Year of manufacture: | 1956 |
| Total airframe hrs: | 2661 hours |
| Engine model: | Lycoming O-320 SERIES |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near John H Boylan State Airport (5B1), Island Pond, VT -
 United States of America
|
| Phase: | Approach |
| Nature: | Private |
| Departure airport: | John H Boylan State Airport, VT (5B1) |
| John H Boylan State Airport, VT (5B1) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The private pilot was landing his airplane at his home airport at the conclusion of a local flight. The airplane was last seen flying normally on the left downwind leg of the airport traffic pattern, and the wreckage was subsequently discovered in a location consistent with a turn from the downwind to base leg of the traffic pattern. The airplane and engine sustained extensive impact damage and postimpact fire damage; however, examination revealed no discrepancies that would have precluded normal operation. A friend of the pilot, who flew with him often, said that the pilot tended to turn from the downwind leg onto the base leg of the traffic pattern "quite steep" (about 40° bank) and slow (62-63 knots). The friend said that he shared his concerns about stalling with the pilot, but the pilot did not share the same concern. The airplane was not equipped with a stall warning horn or angle of attack indicator.
Postmortem toxicology testing revealed the presence of several medications, including diphenhydramine, a sedating antihistamine; however, given the low levels identified, there was no evidence that the pilot was impaired by his use of diphenhydramine or that it contributed to the accident.
Given the amount of fuel onboard and the duration of the flight, it is unlikely that the airplane ran out of fuel. Although there were no witnesses to the accident, given the location of the accident site, lack of preimpact mechanical anomalies, and the pilot's reported habit of conducting traffic pattern turns at a slow speed in a steep bank, it is likely that the pilot exceeded the airplane's critical angle of attack while maneuvering for landing, which resulted in an aerodynamic stall and subsequent impact with terrain.
Probable Cause: The pilot's exceedance of the airplane's critical angle of attack while maneuvering for landing, which resulted in an aerodynamic stall.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: https://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=6936B
History of this aircraft
Other occurrences involving this aircraft
| 5 July 2017 | N6936B | Private | 0 | Berlin, NH | |
sub |
Location
Images:
Photo: NTSB
Media:
NTSB investigating crash today of a Piper PA-22-150 in Island Pond, Vermont.
— NTSB_Newsroom (@NTSB_Newsroom) 25 août 2018
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 26-Aug-2018 02:50 | Geno | Added |
| 26-Aug-2018 19:48 | Iceman 29 | Updated [Aircraft type, Embed code] |
| 27-Aug-2018 18:53 | harro | Updated [Aircraft type, Registration, Cn, Operator, Source, Embed code] |
| 12-Nov-2019 17:49 | ASN Update Bot | Updated [Time, Registration, Nature, Departure airport, Destination airport, Source, Embed code, Damage, Narrative, Accident report, ] |
| 22-May-2022 21:48 | Captain Adam | Updated [Phase, Departure airport, Destination airport, Source, Embed code, Narrative, Category, Photo] |
Corrections or additions? ... Edit this accident description
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