FTW90FA059

NTSB accident investigation · Aeronca 7DC · El Paso, TX · January 28, 1990

Accident · FatalField investigationFinal report
Date
January 28, 1990, 14:10 local (21:10 UTC)
Place
El Paso, TX
Injuries
1 fatal, 1 serious
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N4542EAeronca 7DC
Weather
Visual (VMC) · Day
Status
Completed · report December 30, 1992
Report
Approved by Office Director
FAA report
19900128001159A
Case key
23007

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

Power loss due to failure of the carburetor assembly and the pilot's failure to correct known deficiencies. Factors were contaminated fuel, partially blocked fuel screen, fouled spark plugs, the rough terrain, and the lack of shoulder harnesses.

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) - nonmechanicalTakeoff - initial climb
Fuel system,carburetor - failure,totalCause
Mixture - excessive
Fluid,fuel - contaminationFactor
Fuel system,screen - blocked(partial)Factor
Ignition system,spark plug - fouledFactor
Operation with known deficiencies in equipment - not correctedPilot in commandCause
Forced landingDescent - emergency
Terrain condition - none suitableFactor
In flight collision with terrain/waterLanding - flare/touchdown
Stall/mush - intentionalPilot in command
Shoulder harness - unavailablePilot passengerFactor

Analysis

The engine lost power shortly after liftoff and the pilot made a forced landing in a gravel pit, intentionally stalling the airplane to obtain the lowest possible landing speed. The airplane had a STC for and was being operated on automotive gasoline. Residual fuel and debris were noted in the main fuel tank. The filter screen was estimated to be 20% blocked by san and debris. Some water was found in the fuel. The carburetor needle valve was found to be binding. It had a flat spot on one side, allowing fuel to flood the bowl. The #1 spark plug was inoperative. The #3 plug was oil soaked. All plugs and the exhaust pipe had carbon deposits. Two days before the accident, an airport worker started the engine and it ran for a short period of time before it stopped. No reason was given for the stoppage, and there was no evidence that it was investigated further. The airplane was not equipped with shoulder harnesses.

Aircraft

Registration
N4542E
Reported as
Aeronca 7DC
Category
Airplane
Serial number
7DC-144
Engine
Continental C-85-8, 85 horsepower, reciprocating
Damage
Substantial damage
Flight
Business · Part 91
Operator
Barrett, Philip C., doing business as West Texas Air Museum
Departed
TX04 · El Paso, TX
Destination
TX04
Airport
TX04 · West Texas

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
67
Certificate
Private
Airplane ratings
Single-engine land, Multi-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Toxicology
Performed
Flight hours
2,254 total · 30 in this make and model · 2,177 as pilot in command · 60 in the last 90 days · 20 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
350° at 12 knots
Visibility
70 statute miles
Lowest ceiling
None
Temperature
-0 °F, dew point -0 °F
Observed at
ELP, 9 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.

Other investigations on N4542E · 1

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