NTSB CAROL · Event
Event WPR24LA015
Registry · N4777V
FAA Aircraft Registry record.
Make / Model
BOEING A75N1(PT17)
Engine
AMA/EXPR UNKNOWN ENG
Seats / Engines
2 seats · 1 engine
Last airworthiness date
20000505
ADS-B equipped
Yes — Mode-S A5DE7C
Registrant of record
JUDD DONALD C TRUSTEE
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The flight instructor’s failure to maintain directional control during the landing roll, which resulted in a ground loop.
Factual narrative
The flight instructor of the tailwheel-equipped airplane reported that, while demonstrating a wheel landing during an instructional flight with a student in the rear seat, the nose swerved to the right upon lowering the tailwheel. The pilot corrected with left rudder input, but the airplane ground looped to the right, resulting in substantial damage to the left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions 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).
- — Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained
- — Personnel issues-Task performance-Use of equip/info-Aircraft control-Instructor/check pilot
Verbatim from NTSB's published report. Source file
NTSB_2023_WPR24LA015.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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