FTW90DPJ03

NTSB accident investigation · Piper PA36-400 · Temple, OK · March 22, 1990

Accident · Minor injuriesFinal report
Date
March 22, 1990, 16:15 local (22:15 UTC)
Place
Temple, OK
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N2331XPiper PA36-400
Weather
Visual (VMC) · Day
Status
Completed · report September 15, 1992
Report
Approved by Office Director
FAA report
19900322005249A
Case key
22952

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

Failure of an aileron attachment (bolt) due to fatigue.

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.

Airframe/component/system failure/malfunctionManeuvering - turn to reverse direction
Flight control,aileron attachment - failure,totalCause
Flight control,aileron attachment - fatigueCause
Loss of control - in flightManeuvering - turn to reverse direction
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The ag pilot was spraying when he lost control of the airplane and it impacted nose down, right wing low, in a field. The pilot said he had lost aileron control, and during the investigation, a bolt that had been connecting the aileron torque tube to a plate assembly was found to have been fractured due to fatigue.

Aircraft

Registration
N2331X
Reported as
Piper PA36-400
Category
Airplane
Serial number
36-8202004
Airframe hours
737
Engine
Lycoming IO-720-DIC, 400 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Andy Rylant, doing business as Aero Corp, Incorporated
Registered owner
Aero Crop Inc.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · July 3, 1989 · 105 hours before

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
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
4,993 total · 3,369 in this make and model · 4,937 as pilot in command · 63 in the last 90 days · 25 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
20 statute miles
Lowest ceiling
25,000 ft broken
Temperature
75 °F
Altimeter
30.00 inHg
Observed at
LAW

FAA reports on this event · 1

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