SEA98LA110

NTSB accident investigation · Aeronca 7-AC · Thompson Falls, MT · June 25, 1998

Accident · No injuriesLimited investigationFinal report
Date
June 25, 1998, 12:30 local (18:30 UTC)
Place
Thompson Falls, MT
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N82834Aeronca 7-AC
Weather
Visual (VMC) · Day
Status
Completed · report February 15, 2001
Report
Approved by Office Director
FAA report
19980625024219A
Case key
42809

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 instructor's inadequate remedial action with the application of excessive brake pressure.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Nose downLanding - roll
Remedial action - inadequatePilot in command(cfi)Cause
Brakes(normal) - excessivePilot in command(cfi)Cause

Analysis

The pilot of the Aeronca 7AC was applying braking during a practice short-field landing. The instructor pilot in the back seat told her to apply more braking, but she did not apply as much as the instructor thought was appropriate. The instructor therefore elected to apply additional braking, whereupon the aircraft started to nose over. As soon as the nose-over started, the instructor pilot released the brake pressure he had applied, but it was too late to keep the aircraft's nose from hitting the runway and the main gear from lifting off the runway surface. After hitting the runway, the aircraft fell back onto its main landing gear with sufficient force to tear one main gear attach fitting from the fuselage.

Factual narrative

On June 25, 1998, approximately 1230 mountain daylight time, an Aeronca 7AC, N82834, nosed down into the runway surface during the landing roll at Thompson Falls Airport, Thompson Falls, Montana. The commercial pilot and the flight instructor, were not injured, but the aircraft, which was owned and operated by the commercial pilot, sustained substantial damage. The 14 CFR Part 91 flight, which had been airborne for about two hours and ten minutes, was being operated in visual meteorological conditions. No flight plan had been filed, and there was no report of an ELT activation.

According to the pilot/owner of the aircraft, she was practicing a short field landing when the instructor told her to apply harder braking. When she did not apply as much braking as the instructor felt was appropriate, he elected to apply additional braking. As soon as the additional braking was applied, the aircraft started to roll forward onto its nose. According to the instructor, he released the additional braking as soon as the aircraft started to nose over, but it was too late to keep the aircraft from hitting its nose on the runway and lifting the main gear off the runway surface. The aircraft then fell back onto its gear, ripping one main gear leg attach fitting from the fuselage and damaging the rudder and a wingtip bow.

Aircraft

Registration
N82834
Reported as
Aeronca 7-AC
Category
Airplane
Serial number
7AC-1484
Engine
Continental C-85, 85 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
Carol L. Hayes
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 18, 1997
Departed
THM
Airport
THM · Thompson Falls, runway 25, 4,200 × 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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
52
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Front
Flight hours
442 total · 30 in this make and model · 442 as pilot in command · 21 in the last 90 days · 11 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
20 statute miles
Lowest ceiling
5,000 ft overcast
Temperature
61 °F

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.