GAA15LA019

NTSB accident investigation · Aeronca 7AC · Garrison, IA · March 9, 2015

Accident · No injuriesLimited investigationFinal report
Date
March 9, 2015, 18:00 local (23:00 UTC)
Place
Garrison, IA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N83643Aeronca 7AC
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report October 19, 2015
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20150309004589A
Case key
90928

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 malfunction of the right brake for reasons that could not be determined because postaccident examination revealed no anomalies that would have precluded normal operation.

Findings · 1

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.

Not determinedNot determined › Not determined · Unknown/Not determinedAeronca 7AC: 7 casesAll aircraft: 2,247 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 pilot reported that he was landing the tailwheel-equipped airplane in variable wind conditions. During the landing roll, he applied both heel brakes. When the pilot released the brakes, the right brake did not release. The airplane veered right of the landing path on the dirt airstrip, and the left wing struck a power line pole. During postaccident examination, the brakes operated normally with no anomalies noted.

Factual narrative

On March 9, 2015, about 1800 Central date time, an Aeronca 7AC airplane, N83643, had a main landing gear right brake malfunction during the landing at a private dirt airstrip in Garrison Iowa. The airplane was operated as a visual flight rules (VFR) personal flight, under the provisions of 14 Code of Federal Regulations Part 91, when the accident occurred. Visual meteorological conditions prevailed, and the pilot and sole passenger were not injured. The airplane was stopped after the left wing contacted a power line pole. The pilot reported that he was landing the tailwheel-equipped airplane in variable wind conditions. During the landing roll he applied both heel brakes. When the pilot released the brakes he reported that the right brake did not release. The airplane veered to the right of the landing path and the left wing contacted a power line pole. The airplane sustained substantial to its left wing. An FAA Certificated Airframe & Powerplant (A&P) mechanic identified normal operation of the brake during the airplane's recovery. At the direction of the National Transportation Safety Board Investigator-In-Charge, on April 13, 2015 the brake assembly was disassembled and re-inspected by an FAA A&P Mechanic. No mechanical anomalies were found, and the brake operated normally before and after the inspection.

Aircraft

Registration
N83643
Reported as
Aeronca 7AC (NO SERIES)
Category
Airplane
Serial number
7AC-2321
Built
1946
Airframe hours
4,909
Engine
Continental A-65/75-8, 75 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Noe Mark R
Registered owner
Noe Mark R
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 15, 2014 · 18 hours before
Departed
KVTI · Vinton, IA
Destination
Garrison, IA

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
46
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
June 18, 2014
Seat
Front
Restraint
Lap only
Flight hours
697.2 total · 66 in this make and model · 642.2 as pilot in command · 6.3 in the last 90 days · 1.1 in the last 30 days · 0.6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
170° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
52 °F, dew point 34 °F
Altimeter
30.04 inHg
Observed at
KVTI, 11 nm away

Docket · 5

The files NTSB released with the investigation on May 26, 2015, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.4 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.