CEN10LA475

NTSB accident investigation · Aeronca 11CC · Silver City, NM · August 11, 2010

Accident · No injuriesLimited investigationFinal report
Date
August 11, 2010, 11:55 local (17:55 UTC)
Place
Silver City, NM
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N4546EAeronca 11CC
Defining event
Takeoff: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report April 7, 2011
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Flight Standards District Office
FAA report
20100811040689A
Case key
76945

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 loss of directional control during takeoff and the certificated flight instructor’s delayed remedial action, which resulted in a ground loop.

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.

Action: delayed actionPersonnel issues › Action/decision · Instructor/check pilotAeronca 11CC: 1 caseAll aircraft: 894 casesProbable cause
Action: delayed actionPersonnel issues › Action/decision · PilotAeronca 11CC: 1 caseAll aircraft: 894 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

The private pilot started the takeoff roll and the airplane ground-looped prior to liftoff. The certificated flight instructor unsuccessfully attempted to regain control; however, the airplane veered off the left side of the runway. The right wing main spar and several ribs were bent as a result of the accident sequence.

Factual narrative

On August 11, 20104, at 1145 mountain daylight time, an Aeronca 11CC, N4546E, was substantially damaged when it ground looped during takeoff at Grant County Airport (SVC), Silver City, New Mexico. Visual meteorological conditions (VMC) prevailed at the time of the accident. The instructional flight was being conducted under the provisions of Title 14 Code of Federal Regulations (CFR) Part 91 without a flight plan. The student pilot and flight instructor on board the airplane were not injured. The local flight was originating at the time of the accident. According to the flight instructor's aircraft accident report, the pilot started the takeoff roll and the airplane ground looped prior to liftoff. The instructor tried to regain control but to no avail. The airplane veered off the left side of runway 26. The right wing main spar and several ribs were bent, and the right main landing gear was separated. No anomalies with the airplane were found. The accident report submitted by the pilot corroborated the instructor's report.

Aircraft

Registration
N4546E
Reported as
Aeronca 11CC
Category
Airplane
Serial number
11CC-249
Airframe hours
1,584
Engine
Lycoming O-235-C1, 115 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Tris D. Germain
Registered owner
Tris D. Germain
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
Annual · August 6, 2010
Departed
SVC · Silver City, NM
Destination
SVC · Silver City, NM
Airport
SVC · Grant County, runway 26, 6,802 × 100 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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
76
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
December 20, 2009
Seat
Right
Flight hours
4,000 total · 15 in this make and model · 3,600 as pilot in command · 28 in the last 90 days · 8 in the last 30 days · 1 in the last 24 hours
Role
Pilot
Age
57
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
January 8, 2009
Seat
Left
Flight hours
677 total · 1 in this make and model · 677 as pilot in command · 1 in the last 90 days · 1 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
260° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
88 °F, dew point 45 °F
Altimeter
30.20 inHg
Observed at
SVC

Docket · 3

The files NTSB released with the investigation on October 26, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.2 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.