ASN Wikibase Occurrence # 212664
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Thursday 21 June 2018 |
| Time: | 12:00 LT |
| Type: |  Piper PA-18-150 Super Cub |
| Owner/operator: | Private |
| Registration: | N1979P |
| MSN: | 18-4214 |
| Year of manufacture: | 1955 |
| Total airframe hrs: | 5114 hours |
| Engine model: | Lycoming O-360-C4P |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Dewey Moore Airstrip, Big Creek, ID -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Cascade, ID (na) |
| Yellow Pine, ID (na ) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The private pilot was conducting a personal, cross-country flight as part of a flight of three. One of the pilots reported that, as the flight of three approached the one-way-in, 700-ft-long remote mountain airstrip, the lead pilot surveyed the area, and he reported that no other airplanes were in the area. Subsequently, he and the lead pilot landed at the airstrip uneventfully. After landing, he parked his airplane at the top of the airstrip facing directly down the runway, which allowed him to easily see the approach path to the airstrip. As he was waiting for the accident airplane to come into view, he asked the accident pilot ''¦you've been in here before, right'? The accident pilot replied that he had not, and the other pilot then reminded the accident pilot to fly 'low over the creek.' He added that, when the accident airplane came into view, it was higher than the lead airplane had been on its approach. When the accident airplane had almost reached the extended runway centerline, the accident pilot added power, after which, the airplane pitched up steeply. The airplane then continued upstream of a nearby creek for about 1/2 mile with the nose up and 'not climbing well, if at all.' The airplane then entered a left turn, followed by the left-wing dipping and the airplane entering a left spin. The pilot stated that he saw the airplane make 1 1/4 rotations before it descended out of his sight and impacted terrain and that the engine sounded like it was developing full power from the time of the initial go-around until impact.
The pilot's brother and one of the pilots who witnessed the accident reported that there were no preaccident mechanical malfunctions or failures with the airplane or engine that would have precluded normal operation. The pilot does not recall the events leading to the accident. Therefore, based on the available information, it is likely that the pilot failed to maintain adequate airspeed and exceeded the airplane's critical angle of attack during the go-around, which resulted in an aerodynamic stall/spin at too low of an altitude to recover.
The accident flight was the accident pilot's first attempt to land at the airstrip, which is confined by mountainous terrain and requires pilots to land one way and depart the other with virtually no go-around options during the approach. A plan view of the airstrip recommended that it 'be used only by mountain proficient pilots who have had a checkout specific to the airstrip.' In an Aircraft Owners and Pilots Association video made after the accident pilot recovered from his injuries, he stated that he was negligent in planning for the flight, which included not having obtained a briefing on the airstrip. The pilot also mentioned his lack of proficiency at the time of the accident. Therefore, contributing to the accident were the pilot's failure to obtain a briefing on the airstrip, lack of planning for the flight, and unfamiliarity with the airstrip.
Probable Cause: The pilot's failure to maintain adequate airspeed while conducting a go-around and his exceedance of the airplane's critical angle of attack, which resulted in an aerodynamic stall/spin at too low of an altitude to recover. Contributing to the accident were the pilot's lack of preflight planning, including his failure to obtain a briefing on the challenging, one-way airstrip, and his unfamiliarity with operating into and out of the airstrip, which was surrounded by mountainous terrain.
Accident investigation:
 |
|
Sources:
NTSB WPR18LA176
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=N1979P
History of this aircraft
Other occurrences involving this aircraft
| 12 April 1971 | N1979P | Verle Alfred P | 0 | Seely, WY | |
sub |
Location
Media:
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Jun-2018 11:45 | Gavilan | Added |
| 27-Jun-2018 11:46 | harro | Updated [Aircraft type, Operator, Other fatalities, Location, Destination airport, Damage, Narrative] |
| 28-Jun-2018 18:14 | Geno | Updated [Time, Aircraft type, Registration, Cn, Location, Destination airport, Source] |
| 04-Aug-2019 16:09 | harro | Updated [Nature, Embed code, Narrative] |
| 09-Jul-2022 06:13 | ASN Update Bot | Updated [Time, Other fatalities, Departure airport, Destination airport, Source, Damage, Narrative, Category, Accident report] |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation