BFO88LA055

NTSB accident investigation · Aeronca 7AC · Capon Bridge, WV · June 18, 1988

Accident · No injuriesLimited investigationFinal report
Date
June 18, 1988, 17:00 local (21:00 UTC)
Place
Capon Bridge, WV
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N1841EAeronca 7AC
Weather
Visual (VMC) · Day
Status
Completed · report June 25, 1990
Report
Approved by Office Director
Case key
11418

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

Loss of power because of carburetor ice which obstructed airflow to the engine. The aircraft nosed over on landing because of soft terrain and high grass. The pilot's failure to use carburetor heat is a contributing factor.

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.

Loss of engine power(total) - nonmechanicalCruise
Weather condition - carburetor icing conditionsCause
Carburetor heat - not usedPilot in commandCause
Fuel system,carburetor - iceCause
Forced landingDescent - emergency
Nose overLanding - roll
Terrain condition - softFactor
Terrain condition - high vegetationFactor

Analysis

The plt said he was cruising at 3000 ft when he reduced pwr to start a descent to 2000 ft. after pwr was reduced from 2350 to 1800 RPM, a total pwr loss occurred. Attempts to restart the engine were unsuccessful. The plt said he did not use carb heat, although, he said, later that he suspected carb ice. The pilot made a forced landing into an open field. The plt said because of the soft terrain and high grass, the acft nosed over during the landing roll. The temp/ dew pt was 82/54 degs. Post accident engine test disclosed it operated satisfactory at various power settings. Weather conditions were conducive to the formation of carburetor ice.

Aircraft

Registration
N1841E
Reported as
Aeronca 7AC
Category
Airplane
Serial number
7AC-5408
Airframe hours
3,284
Engine
Continental A75-8A, 75 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Aeronica Flying Club
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 13, 1987 · 61 hours before
Departed
W16 · Winchester, VA

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
45
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
670 total · 200 in this make and model · 620 as pilot in command · 20 in the last 90 days · 10 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
50° at 5 knots
Visibility
12 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 54 °F
Altimeter
30.00 inHg
Observed at
MRB, 25 nm away