NTSB WPR23LA260 — 2023-07-07 · Fremont Island, Utah, United States

Current FAA registration · N1664D

Make / Model: CESSNA 170B
Engine: CONT MOTOR C145 SERIES (145 hp)
Seats / Engines: 4 seats · 1 engine
Last airworthiness date: 19560225
ADS-B equipped: Yes — Mode-S A10AE0

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N1664D Cessna 170B None

Probable cause & findings

The pilot undergoing instruction’s excessive application of asymmetrical braking during landing, which resulted in a ground loop.

Factual narrative

According to the flight instructor, during the landing roll the pilot undergoing instruction applied asymmetrical braking and locked the left brake. This led to a ground loop. The airplane sustained substantial damage to the right 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

FAA avdata. C = Cause, F = Factor.

— Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot
— Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained

Verbatim from NTSB's published report. Source file NTSB_2023_WPR23LA260.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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