ANC92LA004

NTSB accident investigation · Cessna 170B · Chugiak, AK · October 11, 1991

Accident · No injuriesLimited investigationFinal report
Date
October 10, 1991, 18:00 local (Oct 11, 1991, 02:00 UTC)
Place
Chugiak, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N4606CCessna 170B
Weather
Visual (VMC) · Day
Status
Completed · report March 31, 1993
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19911010045599A
Case key
5663

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The student pilot's failure to maintain directional control during the takeoff run.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Nose overTakeoff - aborted
Directional control - not maintainedPilot in commandCause

Analysis

The student pilot was practicing solo takeoff and landings with the instructor supervising from the ramp. After a number of takeoff and landings, the student pilot taxied to the instructor's location and the instructor then told him to continue practicing. The student pilot taxied to the runway and began his takeoff roll. The airplane became airborne after only a partial power application by the pilot and began to veer to the left and he applied right rudder. He stated the airplane did not respond and he aborted the takeoff by reducing the throttle. He stated he failed to remove the right rudder and the airplane immediately made a sharp right turn. The left wing struck the runway and the airplane nosed over.

Aircraft

Registration
N4606C
Reported as
Cessna 170B
Category
Airplane
Serial number
25550
Engine
Lycoming O-340-A1A, 170 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Fitzgibbon, Paul Gratton
Registered owner
Bingman, Lester
Airworthiness certificate
Standard, Normal
Last inspection
Annual · October 5, 1990 · 78 hours before
Departed
Z15
Airport
Z15 · Birchwood, runway 1, 4,000 × 150 ft, asphalt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
24
Certificate
Student
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
38 total · 38 in this make and model · 8 as pilot in command · 38 in the last 90 days · 38 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
30 statute miles
Lowest ceiling
None
Temperature
39 °F
Altimeter
29.00 inHg

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N4606C · 3

Matched to the same aircraft by N-number and date.