NTSB CAROL · Event
Event ERA15CA148
Registry · N37WP
FAA Aircraft Registry record.
Make / Model
PIPER PA-18
Engine
LYCOMING 0-290 SERIES (140 hp)
Seats / Engines
2 seats · 1 engine
Last airworthiness date
19560531
ADS-B equipped
Yes — Mode-S A43374
Registrant of record
KINNEY JOSEPH B
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The student pilot's failure to maintain directional control while landing and the flight instructor's delayed remedial action, which resulted in a ground-loop and the left wing dragging the runway.
Factual narrative
During an instructional flight in a tailwheel equipped airplane, the student pilot and flight instructor planned to stay in the traffic pattern for touch and go landing practice. During the landing rollout, the airplane started drifting to the left side of the runway. Subsequently, the student pilot applied a hard correction to the right with the rudder pedals and the airplane ground looped, stopping 180 degrees from the landing direction. The flight instructor stated that he called for "my aircraft" when the student pilot made the hard correction, but the student pilot did not get off rudder pedals. Both the student pilot and flight instructor suspected that inadvertent brake application may have been applied in the heel brake equipped airplane. The flight instructor added that he did not observe any preimpact mechanical malfunctions with the airplane and the winds were light during the time of the accident. Examination of the airplane by a Federal Aviation Administration inspector revealed substantial damage to the left wing. During an instructional flight in a tailwheel equipped airplane, the student pilot and flight instructor planned to stay in the traffic pattern for touch and go landing practice. During the landing rollout, the airplane started drifting to the left side of the runway. Subsequently, the student pilot applied a hard correction to the right with the rudder pedals and the airplane ground looped, stopping 180 degrees from the landing direction. The flight instructor stated that he called for "my aircraft" when the student pilot made the hard correction, but the student pilot did not get off rudder pedals. Both the student pilot and flight instructor suspected that inadvertent brake application may have been applied in the heel brake equipped airplane. The flight instructor added that he did not observe any preimpact mechanical malfunctions with the airplane and the winds were light during the time of the accident. Examination of the airplane by a Federal Aviation Administration inspector revealed substantial damage to the left wing. 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 oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained - C
- C Personnel issues-Task performance-Use of equip/info-Aircraft control-Student/instructed pilot - C
- C Personnel issues-Action/decision-Action-Delayed action-Instructor/check pilot - C
Verbatim from NTSB's published report. Source file
NTSB_2015_ERA15CA148.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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