ERA15CA317

NTSB accident investigation · Ercoupe 415 C · Fairmont, WV · August 14, 2015

Accident · Minor injuriesData collectionFinal report
Date
August 14, 2015, 14:30 local (18:30 UTC)
Place
Fairmont, WV
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N93606Ercoupe 415 C
Defining event
Approach: Aerodynamic stall/spin
Weather
Visual (VMC) · Day
Status
Completed · report December 3, 2015
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA
FAA report
20150814013679A
Case key
91801

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 failure to maintain airspeed and his exceedance of the wing's critical angle of attack, which resulted in an aerodynamic stall and subsequent collision with terrain.

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotErcoupe 415-C: 9 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedErcoupe 415-C: 2 casesAll aircraft: 1,681 casesProbable cause
Performance/control parameters: angle of attackAircraft › Aircraft oper/perf/capability · Not attained/maintainedErcoupe 415-C: 2 casesAll aircraft: 990 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

According to the pilot, shortly after takeoff he noticed that there was no movement on the header tank fuel float gauge. He went on to say that the fuel float gauge then started to move "down quickly", and since he still had the airport insight, he decided to turn back and conduct a precautionary landing. As he approached for landing he "raised" the nose of the airplane to slow down; but became "too low and too slow" and the airplane collided with a road adjacent to the airport. The airplane sustained substantial damage to the fuselage and wings. Examination of the fuel float gauge by a Federal Aviation Administration inspector did not reveal any anomalies. In addition, the pilot reported there were no pre-impact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.

Factual narrative

According to the pilot, shortly after takeoff he noticed that there was no movement on the header tank fuel float gauge. He went on to say that the fuel float gauge then started to move "down quickly", and since he still had the airport insight, he decided to turn back and conduct a precautionary landing. As he approached for landing he "raised" the nose of the airplane to slow down; but became "too low and too slow" and the airplane collided with a road adjacent to the airport. The airplane sustained substantial damage to the fuselage and wings. Examination of the fuel float gauge by a Federal Aviation Administration inspector did not reveal any anomalies. In addition, the pilot reported there were no pre-impact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.

Aircraft

Registration
N93606
Reported as
Ercoupe 415 C
Category
Airplane
Serial number
929
Built
1946
Airframe hours
1,474.8
Engine
Cont Motor C-75-12, 75 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Clem Robert J
Registered owner
Clem Robert J
Airworthiness certificate
Standard, Normal
Last inspection
Annual · November 10, 2014
Departed
4G7 · Fairmont, WV
Destination
4G7 · Fairmont, WV
Airport
4G7 · Fairmont Municipal Airport, runway 23, 3,194 × 75 ft, asphalt
Equipment
None

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
76
Injuries
Minor
Certificate
Sport Pilot
Airplane ratings
Single-engine land
Medical
Sport pilot, With waivers/limitations
Last flight review
July 15, 2014
Seat
Left
Restraint
Lap only
Flight hours
106 total · 106 in this make and model · 27.7 as pilot in command · 7 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
200° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 54 °F
Altimeter
30.19 inHg
Observed at
CKB, 9 nm away

Docket · 6

The files NTSB released with the investigation on November 20, 2015, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.8 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 N93606 · 1

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