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Atlas / NTSB / WPR14CA047

NTSB CAROL · Event

Event WPR14CA047

2013-11-09 LaGrange, Wyoming, United States Minor 1 aircraft Status: Completed

Registry · N510MA

FAA Aircraft Registry record.

Make / Model

AVIAT AIRCRAFT INC A-1B

Year of manufacture

2005 · 8 years old at event

Engine

LYCOMING O-360 SERIES (180 hp)

Seats / Engines

2 seats · 1 engine

Last airworthiness date

20051108

ADS-B equipped

Yes — Mode-S A66283

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The pilot's decision to land on a rough surface with hidden obstructions (holes).

Factual narrative

The pilot reported that after touchdown on the grass/sod airstrip, the landing roll was normal for about 100 feet, but then the airplane came to an abrupt stop, like it had hit something. The airplane nosed over substantially damaging the rudder and wings. The pilot and ranch personnel inspected the landing area and followed the airplane's tracks back toward the point of touchdown. They found a large hole, likely dug by an animal, approximately 24" deep, and in line with the airplane's right tire track. The pilot said he did not see the hole when flying downwind, nor on the base leg, or final approach. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. The pilot reported that after touchdown on the grass/sod airstrip, the landing roll was normal for about 100 feet, but then the airplane came to an abrupt stop, like it had hit something. The airplane nosed over substantially damaging the rudder and wings. The pilot and ranch personnel inspected the landing area and followed the airplane's tracks back toward the point of touchdown. They found a large hole, likely dug by an animal, approximately 24" deep, and in line with the airplane's right tire track. The pilot said he did not see the hole when flying downwind, nor on the base leg, or final approach. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).

  • C Personnel issues-Action/decision-Info processing/decision-Decision making/judgment-Pilot - C
  • Environmental issues-Physical environment-Object/animal/substance-Hidden/submerged object-Contributed to outcome
  • Environmental issues-Physical environment-Runway/land/takeoff/taxi surface-(general)-Contributed to outcome

Verbatim from NTSB's published report. Source file NTSB_2013_WPR14CA047.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.