ERA22LA329

NTSB accident investigation · Aeronca 7AC · Plant City, FL · July 21, 2022

Accident · Minor injuriesClass 3 · LimitedFinal report
Date
July 21, 2022, 12:00 local (16:00 UTC)
Place
Plant City, FL
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N84423Aeronca 7AC
Defining event
Enroute-cruise: Fuel exhaustion
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20220721012889A
Case key
105547

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

A total loss of engine power due to fuel starvation as a result of the pilot’s inadequate preflight fuel planning.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Planning/preparation: fuel planningPersonnel issues › Task performance · PilotAeronca 7AC: 3 casesAll aircraft: 719 casesProbable cause
Fluids: fuelAircraft › Fluids/misc hardware · Fluid levelAeronca 7AC: 4 casesAll aircraft: 1,695 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

About 5 to 10 minutes after takeoff, the engine lost total power. The pilot performed a forced landing to a field, during which the airplane collided with a fence and drainage pipe, resulting in substantial damage. Examination of the engine and ignition system did not reveal any preimpact mechanical malfunctions. Examination of the fuel system revealed that the carburetor was absent of fuel and only a trace amount of fuel remained in the gascolator. A subsequent borescope examination of the fuel tank revealed that it was intact and that a small, immeasurable amount of fuel was in one corner of the tank, but the tank was otherwise empty. Based on the lack of mechanical anomalies and the absence of fuel in the intact fuel tank, it is likely that the loss of engine power was the result of fuel exhaustion.

Factual narrative

On July 21, 2022, about 1200 eastern daylight time, an Aeronca 7AC, N84423, was substantially damaged when it was involved in an accident near Plant City, Florida. The pilot and a passenger sustained minor injuries. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot reported that he was repositioning the airplane back to his home airport following the completion of its annual inspection. About 5 to 10 minutes after takeoff, the engine lost all power. The pilot performed a forced landing to a field; however, the airplane impacted a bump and bounced twice. The airplane continued through a fence and impacted a pipe in a drainage pond; the right main landing gear collapsed and the airplane came to rest upright at the edge of the pond. Initial examination of the wreckage by a Federal Aviation Administration (FAA) inspector revealed substantial damage to the forward fuselage and right wing strut. The wreckage was subsequently examined by a mechanic and an FAA inspector following its recovery to a storage facility. When the propeller was rotated by hand, camshaft, crankshaft, and valvetrain continuity were confirmed to the rear accessory section and thumb compression was attained on all cylinders. Both magnetos produced spark at all leads when rotated by hand. The carburetor was absent of fuel and about 75 ml of fuel remained in the gascolator. The FAA inspector initially did not observe any fuel in the fuel tank. He then examined the tank via borescope, verified that it was not breached, and observed a small, immeasurable amount of fuel in one corner of the tank, but the tank was otherwise empty.

Aircraft

Registration
N84423
Reported as
Aeronca 7AC
Category
Airplane
Serial number
7AC-3121
Built
1946
Airframe hours
2,301
Engine
Continental A-65-8F, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 19, 2022 · 0 hours before
Departed
X49 · Lakeland, FL
Destination
ZPH · Zephyrhills, FL
Equipment
Electronic flight bag or handheld device

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
66
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine sea, Single-engine land
Medical
Sport pilot
Last flight review
September 25, 2021
Seat
Front
Restraint
Lap only
Flight hours
227 total · 54 in this make and model · 180 as pilot in command · 2 in the last 90 days · 0.3 in the last 30 days · 0.3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 3 knots
Visibility
10 statute miles
Lowest ceiling
3,200 ft broken
Temperature
91 °F, dew point 75 °F
Altimeter
30.11 inHg
Observed at
PCM, 5 nm away
METAR
KPCM 211555Z AUTO 27003KT 10SM BKN032 OVC040 33/24 A3011

Docket · 4

The files NTSB released with the investigation on December 14, 2023, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.9 MB in all.

FAA reports on this event · 1

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