ANC18CA017
2017-11-29 · Nikolai, Alaska, United States · None · 1 aircraft · Status: Completed
Airport 8KA
Current FAA registration · N1386A
- Make / Model
- PIPER PA-18-125
- Year of manufacture
- 1951 · 66 years old at event
- Engine
- LYCOMING 0-320 SERIES (180 hp)
- Seats / Engines
- 2 seats · 1 engine
- Last airworthiness date
- 19930409
- ADS-B equipped
- Yes — Mode-S A09C14
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot’s improper decision to contact an unsuitable landing surface, which resulted in a nose-over.
Factual narrative
The pilot said that he had completed one high and two low reconnaissance flights over the snow-covered runway in his tundra tire-equipped, tailwheel airplane. Prior to landing, he intended to fly a low pass and drag the main landing gear along the surface of the runway to determine the depth of the snow, a maneuver commonly known as dragging the landing site. He said that as the main landing gear wheels touched down atop the frozen layer of crusty snow, the wheels broke through, and the airplane's tail began to rise. In an effort to prevent a nose over, he applied full power, but the airplane subsequently nosed over, sustaining substantial damage to the rudder and both left and right lift struts. The pilot stated there were no preaccident mechanical malfunctions or anomalies that would have precluded normal operation. In the recommendation section of the NTSB Accident/Incident Reporting Form 6120.1, the pilot stated that the accident may have been prevented if he would have utilized a flatter approach with increased airspeed similar to a glassy water approach while dragging the airstrip. The pilot reported that he had completed one high- and two low-reconnaissance flights over the snow-covered runway in his tundra-tire-equipped, tailwheel airplane. Before landing, he intended to fly a low pass and drag the main landing gear along the surface of the runway to determine the depth of the snow. He said that, as the main landing gear wheels touched down atop the frozen layer of crusty snow, the wheels broke through, and the airplane's tail began to rise. In an effort to prevent a nose-over, he applied full power, but the airplane subsequently nosed over. The airplane sustained substantial damage to the rudder and both left and right lift struts. The pilot reported that there were no preaccident mechanical malfunctions or failures that would have precluded normal operation. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
FAA avdata. C = Cause, F = Factor.
- C Personnel issues-Action/decision-Info processing/decision-Decision making/judgment-Pilot - C
- C Environmental issues-Physical environment-Runway/land/takeoff/taxi surface-Snow/slush/ice covered surface-Decision related to condition - C
Verbatim from NTSB's published report. Source file
NTSB_2017_ANC18CA017.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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