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Atlas / NTSB / ERA24LA046

NTSB CAROL · Event

Event ERA24LA046

2023-10-29 Highgate, Vermont, United States Airport · FSO None 1 aircraft Status: Completed

Registry · N289WW

FAA Aircraft Registry record.

Make / Model

PIPER PA-39

Year of manufacture

1971 · 52 years old at event

Engine

LYCOMING 0-290 SERIES (140 hp)

Seats / Engines

6 seats · 2 engines

Last airworthiness date

19710303

ADS-B equipped

Yes — Mode-S A2F173

Registrant of record

FOREMAN GUY W

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The pilot’s inadvertent retraction of the landing gear during landing rollout, which resulted in a landing gear collapse.

Factual narrative

The pilot reported that during the landing rollout on a 3,001-ft-long, asphalt runway, he intended to retract the flaps, but instead he retracted the landing gear. The result was that all three of the landing gear assemblies retracted into their respective wheel wells during the landing roll. The lower fuselage stringers were substantially damaged. The pilot added that there were no preimpact mechanical malfunctions with the airplane. The airplane was equipped with a squat switch on the left main landing gear that was designed to prevent the landing gear from inadvertently retracting; however, the switch required that sufficient weight be on the landing gear in order to work effectively. The pilot stated, and a video of the landing confirmed, that the airplane was still moving at relatively high speed when he selected the landing gear handle to the retracted position. The pilot reported that the squat switch was tested at the last annual inspection and that it operated normally during the inspection. Based on this information, it is likely that the airplane’s wings were still generating lift when the landing gear handle was selected to the retracted position and the gear struts was not compressed enough to activate the squat switch. 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).

  • Personnel issues-Action/decision-Action-Incorrect action selection-Pilot
  • Aircraft-Aircraft systems-Landing gear system-Gear extension and retract sys-Unintentional use/operation

Verbatim from NTSB's published report. Source file NTSB_2023_ERA24LA046.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.