MIA94LA188

NTSB accident investigation · Piper J5C · Yazoo City, MS · July 30, 1994

Accident · Minor injuriesLimited investigationFinal report
Date
July 29, 1994, 19:10 local (Jul 30, 1994, 00:10 UTC)
Place
Yazoo City, MS
Injuries
1 minor, 2 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N74669Piper J5C
Weather
Visual (VMC) · Day
Status
Completed · report October 19, 1995
Report
Approved by Office Director
FAA report
19940729020119A
Case key
37582

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

Partial blockage of the carburetor by a wasp nest, which was not visible during preflight, and which resulted in the loss of power.

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(partial) - mech failure/malfCruise
Fuel system,carburetor - foreign material/substanceCause
Fuel system,carburetor - blocked(partial)Cause
Forced landingEmergency descent/landing
Nose overLanding - roll

Analysis

About 10 minutes into a local flight, the engine lost power and the pilot made a forced landing to an open field. The airplane nosed over on landing. An examination of the carburetor revealed a wasp nest in the venturi that swelled when saturated with fuel. The nest was inside the carburetor and was not visible on preflight.

Factual narrative

On July 29, 1994, about 1910 central daylight time, N74669, a Piper J5C registered to John Granberry, crashed while on a 14 CFR Part 91 personal flight, in Yazoo City, Mississippi. Visual meteorological conditions prevailed at the time and no flight plan was filed for the local flight. The airplane was substantially damaged and the pilot received minor injuries and the 2 passengers reported no injuries. The flight originated about 10 minutes earlier.

The pilot stated that after takeoff the airplane engine began to cut in and out. The engine then failed and he attempted a forced landing to a field. The airplane nosed over on landing. Examination of the engine by FAA personnel revealed that about 75% of the carburetor venturi area was blocked with mud dauber nest material,that swelled up when saturated with fuel.

Aircraft

Registration
N74669
Reported as
Piper J5C
Category
Airplane
Serial number
5-1452
Airframe hours
6,991
Engine
Lycoming O-235-2, 100 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Pigg, Dennis P.
Registered owner
Granberry, John F.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 28, 1993 · 16 hours before
Departed
Yazoo City, MS
Destination
Yazoo City, MS

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
40
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Front
Flight hours
260 total · 40 in this make and model · 260 as pilot in command · 10 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
100° at 4 knots
Visibility
10 statute miles
Lowest ceiling
12,000 ft broken
Temperature
81 °F, dew point 59 °F
Altimeter
30.00 inHg
Observed at
JAN, 25 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.