- Date
- August 1, 2017, 19:00 local (Aug 2, 2017, 03:00 UTC)
- Place
- Puntilla, AK
- Injuries
- 1 uninjured
- Damage
- Destroyed
- Phase of flight
- Landing
- Aircraft
- N9455CCessna 180
- Defining event
- Landing: Loss of control on ground
- Weather
- Visual (VMC) · Day
- Status
- Completed · report March 14, 2018
- Report
- Approved by Office Director
- NTSB office
- General Aviation Accidents
- Parties
- FAA
- FAA report
- 20170801015669A
- Case key
- 95763
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The airplane’s encounter with a downdraft while maneuvering at a low altitude, which resulted in the exceedance of the airplane’s critical angle of attack and a subsequent aerodynamic stall.
Findings · 3
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
According to the pilot, he made two passes over a dry creek bed to assess a potential landing site. The second pass was accomplished up-creek into rising terrain. The airplane was configured with full power and with flaps at 20°, and it was about 50 ft above ground level at 80 mph. The pilot reported that the airplane encountered a downdraft as it transitioned from overflying the trees to overflying the creek bed, which he attempted to correct, but the airplane aerodynamically stalled. Following the stall, the pilot attempted to land on a dry creek bed. The airplane touched down on the creek bed, then bounced and descended into a "dry cut channel." The airplane came to rest nose down in a near vertical position. The airplane was destroyed by a postcrash fire. According to the National Transportation Safety Board's Pilot Aircraft Accident Report, the pilot reported that the event could have been avoided by making the low pass along descending terrain at a higher airspeed. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.
Factual narrative
According to the pilot, he made two passes over a dry creek bed to assess a potential landing site. The second pass was accomplished up creek into rising terrain. The airplane was configured with full power, with flaps at 20° and flying about 50ft AGL and 80 MPH. The pilot reported that the airplane encountered a downdraft as the airplane transitioned from overflying the trees, to overflying the creek bed, which he attempted to correct, but the airplane aerodynamically stalled. Following the stall, the pilot attempted to land on a dry creek bed. The airplane touched down on the creek bed, then bounced and descended into a "dry cut channel". The airplane came to rest nose down and the airplane in a near vertical position. The airplane was destroyed by a post-crash fire. According to the National Transportation Safety Board's, Pilot Aircraft Accident Report, the pilot reported that the event could have been avoided by making the low pass along descending terrain at a higher airspeed. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.
Aircraft
- Registration
- N9455C
- Reported as
- Cessna 180 (UNDESIGNAT)
- Category
- Airplane
- Serial number
- 31853
- Built
- 1955
- Airframe hours
- 2,883
- Engine
- Cont Motor O-470J, 225 horsepower, reciprocating
- Damage
- Destroyed
- Fire
- On-Ground
- Flight
- Personal · Part 91
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · September 3, 2016
- Departed
- PAWS · Wasilla, AK
- Equipment
- Stall warning system
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 26
- Injuries
- None
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 3, Without waivers/limitations
- Last flight review
- June 3, 2017
- Seat
- Left
- Restraint
- Lap only
- Flight hours
- 305 total · 70 in this make and model · 277 as pilot in command · 55 in the last 90 days · 30 in the last 30 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Observed at
- KPTI, 13 nm away
Docket · 2
The files NTSB released with the investigation on January 30, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.7 MB in all.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.