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Atlas / NTSB / WPR14CA228

NTSB CAROL · Event

Event WPR14CA228

2014-06-04 Leeds, Utah, United States Airport · NA None 1 aircraft Status: Completed

Registry · N1672P

FAA Aircraft Registry record.

Make / Model

PIPER PA-18A 150

Year of manufacture

1954 · 60 years old at event

Engine

LYCOMING 0-320 SERIES (180 hp)

Seats / Engines

1 seats · 1 engine

Last airworthiness date

19640324

ADS-B equipped

Yes — Mode-S A10E5B

Registrant of record

AKCHAK AIR LLC

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The pilot's failure to confirm the flaps had been retracted during takeoff, which resulted in a loss of lift and subsequent collision with terrain.

Factual narrative

The pilot had been familiarizing himself with the operation of the tailwheel-equipped airplane in preparation for utilizing it to provide flight training. During the 2-week period leading up to the accident he had practiced multiple takeoffs, landings, and touch-and-go landings, many of which were performed at the accident airstrip. The pilot reported that he had requested that a volunteer sit in the front seat, so he could familiarize himself with flying from the rear seat. After an uneventful flight, they performed a touch-and-go landing on the dirt airstrip, however, during climb-out the airplane began to rapidly sink. The pilot reported that he asked the passenger to retract the flaps, because the control was positioned next to the front seat. The pilot applied forward elevator control attempting to gain airspeed, but the airplane continued to sink. He elected to perform an off-airport landing on a dirt road just beyond the runway; however, during the landing roll the right wing struck a ditch and sustained substantial damage. Postaccident examination of the airplane revealed that the passenger had not retracted the flaps as the pilot had instructed, and they were in the fully extended position. The pilot reported that there were no preimpact mechanical malfunctions or failures with the airframe or engine that would have precluded normal operation. The pilot had been familiarizing himself with the operation of the tailwheel-equipped airplane in preparation for utilizing it to provide flight training. During the 2-week period leading up to the accident he had practiced multiple takeoffs, landings, and touch-and-go landings, many of which were performed at the accident airstrip. The pilot reported that he had requested that a volunteer sit in the front seat, so he could familiarize himself with flying from the rear seat. After an uneventful flight, they performed a touch-and-go landing on the dirt airstrip, however, during climb-out the airplane began to rapidly sink. The pilot reported that he asked the passenger to retract the flaps, because the control was positioned next to the front seat. The pilot applied forward elevator control attempting to gain airspeed, but the airplane continued to sink. He elected to perform an off-airport landing on a dirt road just beyond the runway; however, during the landing roll the right wing struck a ditch and sustained substantial damage. Postaccident examination of the airplane revealed that the passenger had not retracted the flaps as the pilot had instructed and they were in the fully extended position. The pilot reported that there were no preimpact mechanical malfunctions or failures with the airframe or engine 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 Aircraft-Aircraft systems-Flight control system-TE flap control system-Unintentional use/operation - C
  • C Personnel issues-Action/decision-Info processing/decision-Identification/recognition-Pilot - C
  • Personnel issues-Task performance-Use of equip/info-Use of equip/system-Passenger

Verbatim from NTSB's published report. Source file NTSB_2014_WPR14CA228.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.