ATL96LA002

NTSB accident investigation · Socata TB-9 · Decatur, AL · October 2, 1995

Accident · No injuriesLimited investigationFinal report
Date
October 2, 1995, 17:30 local (21:30 UTC)
Place
Decatur, AL
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N152NDSocata TB-9
Weather
Visual (VMC) · Day
Status
Completed · report April 1, 1996
Report
Approved by Office Director
FAA report
19951002030919A
Case key
3663

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

On this page

Probable cause

The student pilot's failure to maintain directional control during an aborted takeoff attempt. A factor was the stripped throttle knob threads.

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.

Loss of control - on ground/waterTakeoff - aborted
Directional control - not maintainedPilot in commandCause
Airframe/component/system failure/malfunctionTakeoff - aborted
Throttle/power lever - stripped threadFactor
Nose gear collapsedTakeoff - aborted
Landing gear,nose gear - overload

Analysis

The student pilot reported that he lost directional control of the airplane during an aborted touch and go attempt. The directional control problem was compounded when the throttle knob came off of the throttle control as the student attempted to reduce engine power.

Factual narrative

On October 2, 1995, at 1730 central daylight time, a Socata TB-9, N152ND, nose gear collapsed after the student pilot lost control of the airplane during the go phase of a touch and go landing at Pryor Field in Decatur, Alabama. The supervised solo flight operated under the provisions of 14 CFR Part 91 with no flight plan filed. Visual weather conditions prevailed at the time of the accident. The airplane was substantially damaged, and the student pilot was not injured. The flight departed Huntsville, Alabama, at 1700 hours.

According to the student pilot, this was his second supervised solo flight. He had completed one touchdown, and was on the go phase of the first of a series of touch and go landings. As the airplane accelerated for the takeoff, the airplane veered off the left side of runway 18. When the student pilot attempted to regain control of the airplane, the throttle knob came off the throttle control lever.

The student pilot did not report a mechanical problem with the airplane. Examination of the airplane also failed to disclose a mechanical problem. This aircraft is equipped with an arm type throttle control lever; the throttle lever was still fully operational without the knob assembly.

Aircraft

Registration
N152ND
Reported as
Socata TB-9
Category
Airplane
Serial number
1201
Airframe hours
2,276
Engine
Lycoming O-320-D2A, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
University Of North Dakota
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 8, 1995 · 33 hours before
Departed
HSV · Huntsville, AL
Airport
DCU · Pryor Field, runway 18, 5,096 × 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
35
Certificate
Student
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
32 total · 32 in this make and model · 1 as pilot in command · 32 in the last 90 days · 20 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
90° at 4 knots
Visibility
10 statute miles
Lowest ceiling
6,000 ft broken
Temperature
73 °F, dew point 66 °F
Altimeter
29.00 inHg
Observed at
HSV, 22 nm away

FAA reports on this event · 1

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