ASN Wikibase Occurrence # 291012
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| Date: | Wednesday 3 June 2015 |
| Time: | 17:18 LT |
| Type: |  Grumman G-164B Tubo Ag-Cat |
| Owner/operator: | Wilson Flying Service Inc. |
| Registration: | N8402K |
| MSN: | 687B |
| Year of manufacture: | 1982 |
| Total airframe hrs: | 12489 hours |
| Engine model: | Honeywell / Airesearch TPE331-1-151A |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Delaplaine, Arkansas -
 United States of America
|
| Phase: | Take off |
| Nature: | Agricultural |
| Departure airport: | Delaplaine, AR (KPVT) |
| Delaplaine, AR (KPVT) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The commercial pilot was conducting an agricultural application flight. The pilot reported that the airplane had been refueled before the preceding flight, which was about 15 minutes long and was completed without incident, and that the fertilizer load was about the same on the accident flight as it was on the preceding flight. He added that the accident takeoff ground run was longer than for the previous takeoff and that, after he became aware of the extended ground run, the airplane was already past his predetermined takeoff "commitment" (go/no go) point. The airplane became airborne but did not climb. The tailwheel subsequently impacted a rice levee, and the airplane then settled into the field and came to rest inverted. The pilot noted that he never actually lost control of the airplane and that he did not perceive any issues with the airframe or the engine during the accident takeoff.
A postaccident examination of the engine and airframe did not reveal any preimpact mechanical failures or malfunctions. An engine teardown examination revealed evidence consistent with engine operation at impact. The examination also revealed that the torsion shaft had failed due to torsional overload as a result of a sudden stoppage of the engine at impact.
The density altitude was calculated to be about 1,680 ft, and a light tailwind existed at the time of the accident. The airplane was likely operating at or near its maximum gross weight, which, combined with the effects of the elevated density altitude and light tailwind conditions, resulted in the airplane becoming airborne at an airspeed that could not be maintained outside of ground effect. The pilot subsequently failed to maintain the proper angle-of-attack as he attempted to climb the airplane out of ground effect, which resulted in an aerodynamic stall.
Probable Cause: The pilot's failure to establish a proper airspeed and angle-of attack during takeoff in elevated density altitude and light tailwind conditions, which resulted in an aerodynamic stall.
Accident investigation:
 |
|
Sources:
NTSB CEN15LA259
History of this aircraft
Other occurrences involving this aircraft
| 21 April 1994 | N8402K | Wilson Flying Ser. Inc. | 0 | Delaplaine, AR | |
sub |
| 10 May 2011 | N8402K | Wilson Flying Service Inc | 0 | Northeast of Walnut Ridge, Arkansas | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 07-Oct-2022 08:29 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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