CESSNA 180
Puntilla, AK — August 2, 2017
Event Information
| Date | August 2, 2017 |
| Event Type | ACC |
| NTSB Number | GAA17CA473 |
| Event ID | 20170807X40213 |
| Location | Puntilla, AK |
| Country | USA |
| Coordinates | 61.92361, -153.02361 |
| Highest Injury | NONE |
Aircraft
| Make | CESSNA |
| Model | 180 |
| Category | AIR |
| FAR Part | 091 |
| Aircraft Damage | DEST |
Conditions
| Light Condition | DAYL |
| Weather | VMC |
Injuries
| Fatal | 0 |
| Serious | 0 |
| Minor | 0 |
| None | 1 |
| Total Injured | 0 |
Event Location
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.
Full 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.
About This NTSB Record
This aviation event was investigated by the National Transportation Safety Board (NTSB). NTSB investigates all U.S. civil aviation accidents to determine probable cause and issue safety recommendations to prevent future accidents.