CEN14CA157

NTSB accident investigation · Aeronca 7AC · Adrian, TX · March 1, 2014

Accident · No injuriesData collectionFinal report
Date
March 1, 2014, 13:30 local (19:30 UTC)
Place
Adrian, TX
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N85372Aeronca 7AC
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report April 23, 2014
Report
Approved by Office Director
NTSB office
Central Region
FAA report
20140301001429A
Case key
88908

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

The pilot's failure to maintain directional control of the airplane during the landing roll which resulted in the airplane ground looping.

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 · PilotAeronca 7AC: 43 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedAeronca 7AC: 26 casesAll aircraft: 3,958 casesProbable cause
Performance/control parameters: surface speed/brakingAircraft › Aircraft oper/perf/capability · Not attained/maintainedAeronca 7AC: 1 caseAll aircraft: 238 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 reported he planned on making a wheel landing at a higher than normal airspeed due to the anticipated strong surface wind. The pilot reported that during the landing roll, after the tailwheel settled to the ground, he noticed that the wind velocity was less than he anticipated and that his ground speed was "pretty fast." According to the pilot, due to the increased groundspeed, the wings were still producing some lift and although the gear remained on the runway, the full weight of the airplane was not on the landing gear. The pilot stated the airplane swerved to the right and he was able to regain directional control. The airplane then swerved to the left and the pilot was not able to regain directional control which resulted in a ground loop. The tailwheel traveled into the grass alongside the runway, and the right wing and right stabilizer contacted the ground. The pilot was able to taxi the airplane back onto the runway, however; he stated it would not taxi straight. The pilot reported there were no mechanical malfunctions of the airplane prior to the accident. A postaccident examination revealed the airplane sustained substantial damage to the aft fuselage.

Factual narrative

The pilot reported he planned on making a wheel landing at a higher than normal airspeed due to the anticipated strong surface wind. The pilot reported that during the landing roll, after the tailwheel settled to the ground, he noticed that the wind velocity was less than he anticipated and that his ground speed was "pretty fast." According to the pilot, due to the increased groundspeed, the wings were still producing some lift and although the gear remained on the runway, the full weight of the airplane was not on the landing gear. The pilot stated the airplane swerved to the right and he was able to regain directional control. The airplane then swerved to the left and the pilot was not able to regain directional control which resulted in a ground loop. The tailwheel traveled into the grass alongside the runway, and the right wing and right stabilizer contacted the ground. The pilot was able to taxi the airplane back onto the runway, however; he stated it would not taxi straight. The pilot reported there were no mechanical malfunctions of the airplane prior to the accident. A postaccident examination revealed the airplane sustained substantial damage to the aft fuselage.

Aircraft

Registration
N85372
Reported as
Aeronca 7AC (NO SERIES)
Category
Airplane
Serial number
7AC4112
Built
1946
Airframe hours
3,108
Engine
Continental A65-8, 65 horsepower, reciprocating
Damage
Substantial damage
Fire
Unknown
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Departed
DHT · Dalhart, TX
Destination
CVN · Clovis, TX
Airport
PVT · Coleman Cattle Ranch, runway 04, 3,500 × 50 ft, asphalt

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
56
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
August 11, 2013
Seat
Front
Restraint
Lap only
Flight hours
301.2 total · 48.5 in this make and model · 193.6 as pilot in command · 5.1 in the last 90 days · 5.1 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 23 °F
Altimeter
29.82 inHg
Observed at
HRX, 46 nm away

Docket · 1

The files NTSB released with the investigation on April 10, 2014, on NTSB’s docket system: statements, records, photos and specialists’ reports. 426 KB 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.