FTW95LA072

NTSB accident investigation · Piper PA-12 · La Porte, TX · December 24, 1994

Accident · Minor injuriesLimited investigationFinal report
Date
December 24, 1994, 16:36 local (22:36 UTC)
Place
La Porte, TX
Injuries
1 minor, 2 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N2820MPiper PA-12
Weather
Visual (VMC) · Day
Status
Completed · report March 27, 1995
Report
Approved by Office Director
FAA report
19941224042189A
Case key
19326

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

Loss of engine power due to fuel starvation as result of the failure of the glass bowl on the gascolator. A factor was the lack of suitable terrain at the pilot's disposal to execute a forced landing.

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 power(total) - mech failure/malfCruise
Fuel system,strainer - failure,totalCause
Fluid,fuel - starvationCause
Forced landingDescent - emergency
Nose overLanding - roll
Terrain condition - none suitableFactor

Analysis

The engine lost power without warning while in cruise flight at 1,000 feet. The pilot landed on a narrow dirt road on a levee. During the landing roll, the main landing gears sunk into soft mud and ruts, and the airplane nosed over coming to rest on its back. The pilot, who is also the certificated mechanic that had recently rebuilt the airplane, stated that prior to the flight, he found fuel leaking from around the glass bowl in the gascolator assembly. The pilot added that he reseated the glass bowl and secured the locking screw with safety wire. Examination of the wreckage revealed that the gascolator glass bowl was missing, resulting in the fuel starvation of the engine.

Factual narrative

On December 24, 1994, at 1636 central standard time, a Piper PA-12, N2820M, was substantially damaged during a forced landing near La Porte, Texas. The private pilot sustained minor injuries, while his two passengers were not injured. Visual meteorological conditions prevailed for the personal flight.

According to the pilot, the airplane departed the La Porte Municipal Airport (T41) en route to Baytown, Texas. While in cruise flight at approximately 800 to 1,000 feet above the the ship channel, the engine lost power without warning. The pilot added that he elected to land on a narrow dirt road on a levee approximately 4 miles northeast of the airport. During the landing roll, the main wheels sank into soft mud, the landing gear collapsed, and the airplane nosed over to the inverted position.

The 1946 model airplane had accumulated 54 hours since the airplane was completely rebuilt by the pilot. Prior to the flight, the pilot stated that he found fuel leaking from around the glass bowl in the gascolator/strainer assembly. He further stated that he reseated the glass bowl and secured it with safety wire.

The pilot, who is also an FAA certificated airframe/powerplant mechanic with inspection authority, performed a post accident examination of the wreckage at the accident site. Examination of the gascolator assembly, part number 750-268, revealed a fracture at the "T" fitting where the nut is threaded upwards to hold the bowl in place. The glass gascolator was not recovered, but the safety wire remained in place.

The pilot suspects that the glass bowl might have also cracked during installation and fallen off during flight resulting in the fuel starvation of the engine.

Aircraft

Registration
N2820M
Reported as
Piper PA-12
Category
Airplane
Serial number
12-1172
Airframe hours
1,543
Engine
Lycoming O-320-A2A, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Flynt, Gary J.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 15, 1994 · 54 hours before
Departed
T41 · TX
Destination
HPY · Baytown, 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
Front
Flight hours
339 total · 35 in this make and model · 305 as pilot in command · 20 in the last 90 days · 5 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
10° at 6 knots
Visibility
11 statute miles
Lowest ceiling
None
Temperature
54 °F, dew point 39 °F
Altimeter
30.00 inHg
Observed at
EFD, 15 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.