ASN Wikibase Occurrence # 265002
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| Date: | Thursday 1 July 2021 |
| Time: | 14:00 LT |
| Type: |  Cessna 170B |
| Owner/operator: | Private |
| Registration: | N2746D |
| MSN: | 25288 |
| Year of manufacture: | 1952 |
| Total airframe hrs: | 3856 hours |
| Engine model: | Lycoming IO-360-N1A |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Dalrymple's Airport (31AK), Fairbanks, AK -
 United States of America
|
| Phase: | Take off |
| Nature: | Private |
| Departure airport: | North Pole, AK |
| Mankomen Lake, AK | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During the takeoff of the personal flight, the airplane was unable to gain enough altitude to clear the trees off the departure end of the runway. Subsequently, the airplane impacted the trees and came to rest inverted, and a postaccident fire ensued, which destroyed the airplane. The pilot told the responding law enforcement officer that he thought that the wind had shifted during the takeoff and that the airplane lost lift at the end of the runway.
A postaccident examination of the airplane revealed no evidence of preaccident mechanical malfunctions or failures that would have precluded normal operation.
At the time of the accident, the airplane was departing from a grass/turf-covered runway, during a hot summer day, with full main fuel tanks, with a total of four occupants on board, and an estimated density altitude of 2,186 ft above mean sea level.
The pilot reported that the airplane was about 13 pounds more than its maximum gross takeoff weight.
The airplane owner's manual indicated that at a maximum gross weight the airplane would need an estimated takeoff distance of 2,250 ft to clear a 50-ft obstacle. The accident site is a 2,400 ft long, by 100 ft wide, turf-covered site. The airplane manufacturer added that the turf runway would likely add to the distance needed for the takeoff.
Thus, given the conditions of the accident, the pilot likely exceeded the airplane's takeoff performance limitations, which resulted in the airplane not attaining the altitude needed to clear the tree line during takeoff and the subsequent impact with trees.
Probable Cause: The pilot's exceedance of the airplane's takeoff performance limitations, which prevented the airplane from gaining sufficient altitude to clear the trees off the departure end of the runway.
Accident investigation:
 |
|
Sources:
NTSB ANC21LA056
FAA register: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=N2746D
History of this aircraft
Other occurrences involving this aircraft
| 3 May 1992 | N2746D | Karalunas, David Nmi | 0 | Talkeetna, AK | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Jul-2021 04:32 | Geno | Added |
| 03-Jul-2021 06:14 | RobertMB | Updated [Aircraft type, Registration, Cn, Operator, Location, Phase, Nature, Departure airport, Source, Damage, Narrative] |
| 03-Jul-2021 08:54 | Captain Adam | Updated [Narrative] |
| 03-Jul-2021 14:29 | RobertMB | Updated [Narrative] |
Corrections or additions? ... Edit this accident description
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