NTSB CAROL · Event
Event WPR14CA228
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The pilot's failure to confirm the flaps had been retracted during takeoff, which resulted in a loss of lift and subsequent collision with terrain.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 ↗.
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