FTW92LA188

NTSB accident investigation · Piper PA-38-112 · Carrollton, TX · July 25, 1992

Accident · Serious injuriesLimited investigationFinal report
Date
July 25, 1992, 14:00 local (19:00 UTC)
Place
Carrollton, TX
Injuries
1 serious
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N9240TPiper PA-38-112
Weather
Visual (VMC) · Day
Status
Completed · report June 11, 1993
Report
Approved by Office Director
FAA report
19920725027509A
Case key
18539

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 pilot's selection of unsuitable terrain. Factors were the failed carburetor de-ice system valve resulting in an inoperative carburetor and the inadequate annual inspection by company maintenance personnel.

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 engine powerDescent
Anti-ice/deice system,carburetor/heat - failure,totalFactor
Fuel system,carburetor - inoperativeFactor
Maintenance,annual inspection - inadequateCompany maintenance personnelFactor
Forced landingDescent - emergency
In flight collision with objectLanding
Object - fence
Unsuitable terrain or takeoff/landing/taxi area - selectedPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The pilot was descending the airplane into the control zone and had received clearance to enter a right base for runway 15 when the engine quit after he applied carburetor heat. The pilot made a 180 degree turn and descended over one open grass field as he attempted to glide to a dirt field. A fence and a railroad track lay between the fields. The airplane struck the fence, rotated approximately 180 degrees, and descended out of control to impact the terrain near the railroad tracks. The investigation revealed the main valve for the carburetor heat box had failed and was sucked into the carburetor inlet, blocking air flow, and rendered the carburetor inoperative. Further investigation revealed that portions of the valve assembly had been failing for an unspecified time prior to the accident and its' retaining screws had not been secured properly.

Aircraft

Registration
N9240T
Reported as
Piper PA-38-112
Category
Airplane
Serial number
3878A0288
Airframe hours
2,439
Engine
Lycoming O-235-L2C, 112 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Operator
Stramel Aviation Inc.
Registered owner
Hinckley, David
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 28, 1992 · 48 hours before
Departed
ADS · Addison, TX

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
31
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
110 total · 6 in this make and model · 90 as pilot in command · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
250° at 5 knots
Visibility
20 statute miles
Lowest ceiling
None
Temperature
95 °F, dew point 64 °F
Altimeter
30.00 inHg
Observed at
ADS, 4 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.