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WPR11CA355

2011-07-30 · Mulino, Oregon, United States · None · 1 aircraft · Status: Completed

Airport 4S9

Current FAA registration · N9741A

Make / Model
CESSNA 170A
Year of manufacture
1950 · 61 years old at event
Engine
CONT MOTOR C145 SERIES (145 hp)
Seats / Engines
4 seats · 1 engine
Last airworthiness date
19560221
ADS-B equipped
Yes — Mode-S AD94FD

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The certified flight instructor's inadequate oversight of his student, and delayed recovery efforts following the student's loss of directional control during landing rollout.

Factual narrative

The certified flight instructor (CFI) reported that the purpose of the flight was, in part, to provide the private pilot with recurrent training in furtherance of obtaining a flight review. The student was not current. Following performance of basic airwork in the conventional gear airplane, the CFI asked the student to perform a wheel landing. The CFI said that the student’s landing was successfully performed, but during rollout he exhibited a directional control deficiency. The airplane veered right during rollout on the subsequent landing, and the student attempted to regain directional control. The CFI reported that, due to his lengthy personal relationship with the student, he delayed acquiring control of the airplane. By the time he took the controls, it was too late to avoid the impending ground loop. As the airplane came to a stop on the runway’s gravel shoulder, the left main landing gear separated from the gear box, and the left wing broke. The certified flight instructor (CFI) reported that the purpose of the flight was, in part, to provide the private pilot with recurrent training in furtherance of obtaining a flight review. The student was not current. Following performance of basic airwork in the conventional gear airplane, the CFI asked the student to perform a wheel landing. The CFI said that the student’s landing was successfully performed, but during rollout he exhibited a directional control deficiency. The airplane veered right during rollout on the subsequent landing, and the student attempted to regain directional control. The CFI reported that, due to his lengthy personal relationship with the student, he delayed acquiring control of the airplane. By the time he took the controls, it was too late to avoid the impending ground loop. As the airplane came to a stop on the runway’s gravel shoulder, the left main landing gear separated from the gear box, and the left wing broke. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

FAA avdata. C = Cause, 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 pilot - C
  • C Personnel issues-Psychological-Attention/monitoring-Monitoring other person-Instructor/check pilot - C
  • C Personnel issues-Action/decision-Action-Delayed action-Instructor/check pilot - C

Verbatim from NTSB's published report. Source file NTSB_2011_WPR11CA355.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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