ERA22LA244

NTSB accident investigation · Aeronca 7AC · Monongahela, PA · May 27, 2022

Accident · Serious injuriesClass 3 · LimitedFinal report
Date
May 27, 2022, 19:00 local (23:00 UTC)
Place
Monongahela, PA
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N84583Aeronca 7AC
Defining event
Initial climb: Aerodynamic stall/spin
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
20220527009009A
Case key
105146

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

The pilot’s exceedance of the airplane’s critical angle of attack during the initial climb, which resulted in an aerodynamic stall.

Findings · 3

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.

Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedAeronca 7AC: 10 casesAll aircraft: 1,681 cases
Performance/control parameters: angle of attackAircraft › Aircraft oper/perf/capability · Not attained/maintainedAeronca 7AC: 7 casesAll aircraft: 990 cases

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

The pilot was conducting takeoffs and landings in the tailwheel-equipped airplane, which he had not previously flown. A witness reported that, after takeoff, the airplane pitched up “sharply, then went straight down,” consistent with an aerodynamic stall. The pilot stated that he “assumed” that, during takeoff, the airplane got too slow and stalled, which resulted in impact with trees and terrain. Postaccident examination of the airframe and engine revealed no evidence of any preimpact mechanical malfunctions or failures that would have precluded normal operation; therefore, it is likely that, during the initial climb after takeoff, the pilot failed to maintain adequate airspeed, which resulted in the exceedance of the airplane’s critical angle of attack and an aerodynamic stall.

Factual narrative

On May 27, 2022, about 1900 eastern daylight time, an Aeronca 7AC, N84583, was substantially damaged when it was involved in an accident near Monongahela, Pennsylvania. The pilot was seriously injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. According to the Federal Aviation Administration (FAA) inspector who responded to the accident site, witnesses reported that the airplane departed Rostraver Airport (FWQ), Monongahela, Pennsylvania, and was practicing touch-and-go takeoffs and landings when, after takeoff, the airplane pitched up “sharply, then went straight down.” The pilot stated that he was in the process of purchasing the airplane when the accident occurred. On the day of the accident, he performed several takeoffs and landings at another airport before flying to FWQ to get fuel. The pilot stated that he performed a few takeoffs and landings in the traffic pattern at FWQ, and “assumed” that, during the final takeoff, the airplane “got too slow and stalled.” Examination of the airplane at the accident site revealed that both wings remained attached to the fuselage, with the outboard leading edges impact damaged. The wooden propeller remained attached to the engine; one propeller blade was splintered along the entire span and the other blade was splintered about half its span. Examination of the airplane after recovery revealed continuity of the flight controls to all control surfaces. The engine was examined, and compression and suction were observed on all cylinders. Crankshaft and valvetrain continuity were confirmed when the propeller was rotated by hand. The cylinders were examined with a lighted borescope and no anomalies were noted with the piston faces, cylinder walls, or valves. The magnetos were removed and produced spark on all towers. There were no anomalies with the airplane that would have precluded normal operation before the accident. A review of the pilot’s logbooks revealed that he did not have any documented flight experience in the accident airplane make and model. The seller of the airplane stated that the accident flight was the pilot’s first flight in the accident airplane. The pilot’s tailwheel endorsement was completed on April 20, 2022, in an American Champion 7ECA Citabria; however, there was no documented flight time associated with the endorsement.

Aircraft

Registration
N84583
Reported as
Aeronca 7AC
Category
Airplane
Serial number
7AC-3286
Built
1946
Airframe hours
2,182.96
Engine
Continental A-65-8, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 16, 2021
Destination
Same as departure
Airport
FWQ · Rostraver Airport
Equipment
Unknown

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
32
Injuries
Serious
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Without waivers/limitations
Last flight review
May 25, 2022
Seat
Rear
Flight hours
148.2 total · 0 in this make and model · 40.2 as pilot in command · 24 in the last 90 days · 10.6 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
210° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
64 °F, dew point 57 °F
Altimeter
29.80 inHg
Observed at
AFJ, 22 nm away
METAR
KAFJ 272256Z AUTO 21007KT 10SM FEW095 18/14 A2980 RMK AO2 RAE25 SLP086 T01830139 PNO

Docket · 8

The files NTSB released with the investigation on November 7, 2023, on NTSB’s docket system: statements, records, photos and specialists’ reports. 882 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.

Other investigations on N84583 · 1

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