GAA16CA383

NTSB accident investigation · Aeronca 7AC · Lenoir, NC · July 18, 2016

Accident · No injuriesData collectionFinal report
Date
July 18, 2016, 08:30 local (12:30 UTC)
Place
Lenoir, NC
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N84690Aeronca 7AC
Defining event
Enroute: VFR encounter with IMC
Weather
Instrument (IMC) · Day
Status
Completed · report September 12, 2016
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20160718011229A
Case key
93651

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 encounter with instrument meteorological conditions, which resulted in an emergency descent through fog, a runway overrun on a wet grass runway, and a collision with a ditch and vegetation. Contributing to the accident was the pilot's failure to obtain a weather briefing prior to the flight.

Findings · 7

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.

Aircraft capability: landing distanceAircraft › Aircraft oper/perf/capability · Capability exceededAeronca 7AC: 1 caseAll aircraft: 68 casesProbable cause
Ceiling/visibility/precip: fogEnvironmental issues › Conditions/weather/phenomena · Effect on operationAeronca 7AC: 1 caseAll aircraft: 78 casesProbable cause
Ceiling/visibility/precip: below VFR minimaEnvironmental issues › Conditions/weather/phenomena · Effect on operationAeronca 7AC: 1 caseAll aircraft: 184 casesProbable cause
Planning/preparation: weather planningPersonnel issues › Task performance · PilotAeronca 7AC: 1 caseAll aircraft: 156 casesProbable cause
Object/animal/substanceEnvironmental issues › Physical environment · Contributed to outcomeAeronca 7AC: 1 caseAll aircraft: 224 cases
Runway/land/takeoff/taxi surface: wet surfaceEnvironmental issues › Physical environment · Ability to respond/compensateAeronca 7AC: 1 caseAll aircraft: 141 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 of an airplane not equipped with radios or certified for flight into instrument meteorological conditions reported that during the initial climb, "I was in the fog and knew I had to get back down." The pilot further reported that he navigated the airplane to two other nearby airports with a non-aviation handheld global positioning system, but both airports were fogged in. After flying for about 30 minutes, the pilot reported that he was concerned with the fuel remaining, due to only taking off with about ½ full fuel tanks. He subsequently navigated back to the departure airport and saw the grass runway below him through a hole in the fog. The pilot reported that he "slipped it through" the hole, but his touchdown was about ¾ of the way down the wet grass runway. The pilot attempted to ground loop the airplane within the runway distance remaining, but the airplane continued straight and overran the runway, impacting a ditch and vegetation. The fuselage and both wings sustained substantial damage. The pilot did not report any mechanical malfunctions or failures with the airplane that would have precluded normal operation. The pilot reported that he did not obtain a weather briefing prior to flight. He also reported that during preflight he observed "a little fog sneaking up over a nearby hill." The departure airport was not equipped with an automated weather observing station (AWOS), but an airport with an AWOS 10 nautical miles southwest at the time of departure reported the visibility at ¼ statute miles with fog, a cloud ceiling of 100 feet overcast, and a temperature of 68 degrees Fahrenheit (20 Celsius) and dew point of 68 degrees Fahrenheit (20 Celsius). The Federal Aviation Administration Pilot's Handbook of Aeronautical Knowledge (PHAK) in part states: "When the temperature of the air is reduced to the dew point, the air is completely saturated and moisture begins to condense out of the air in the form of fog, dew, frost, clouds, rain, or snow."

Factual narrative

The pilot of an airplane not equipped with radios or certified for flight into instrument meteorological conditions reported that during the initial climb, "I was in the fog and knew I had to get back down." The pilot further reported that he navigated the airplane to two other nearby airports with a non-aviation handheld global positioning system, but both airports were fogged in. After flying for about 30 minutes, the pilot reported that he was concerned with the fuel remaining, due to only taking off with about ½ full fuel tanks. He subsequently navigated back to the departure airport and saw the grass runway below him through a hole in the fog. The pilot reported that he "slipped it through" the hole, but his touchdown was about ¾ of the way down the wet grass runway. The pilot attempted to ground loop the airplane within the runway distance remaining, but the airplane continued straight and overran the runway, impacting a ditch and vegetation. The fuselage and both wings sustained substantial damage. The pilot did not report any mechanical malfunctions or failures with the airplane that would have precluded normal operation. The pilot reported that he did not obtain a weather briefing prior to flight. He also reported that during preflight he observed "a little fog sneaking up over a nearby hill." The departure airport was not equipped with an automated weather observing station (AWOS), but an airport with an AWOS 10 nautical miles southwest at the time of departure reported the visibility at ¼ statute miles with fog, a cloud ceiling of 100 feet overcast, and a temperature of 68 degrees Fahrenheit (20 Celsius) and dew point of 68 degrees Fahrenheit (20 Celsius). The Federal Aviation Administration Pilot's Handbook of Aeronautical Knowledge (PHAK) in part states: "When the temperature of the air is reduced to the dew point, the air is completely saturated and moisture begins to condense out of the air in the form of fog, dew, frost, clouds, rain, or snow."

Aircraft

Registration
N84690
Reported as
Aeronca 7AC (NO SERIES)
Category
Airplane
Serial number
7AC-3402
Built
1946
Engine
Continental A-65, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Lenoir Aviation Club Inc.
Registered owner
Lenoir Aviation Club Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 15, 2015
Departed
NC27 · Lenoir, NC
Destination
NC27 · Lenoir, NC
Airport
NC27 · Lower Creek, runway 05, 3,200 × 150 ft, grass/turf
Equipment
Handheld GPS

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
75
Injuries
None
Certificates
Flight instructor, Airline transport
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Sport pilot
Last flight review
August 22, 2015
Seat
Front
Flight hours
15,750 total · 150 in this make and model · 9,000 as pilot in command · 6.4 in the last 90 days · 0.8 in the last 30 days · 0.8 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Day
Wind
Calm
Lowest ceiling
100 ft overcast
Temperature
68 °F, dew point 68 °F
Altimeter
30.30 inHg
Observed at
KMRN, 10 nm away

Docket · 4

The files NTSB released with the investigation on August 30, 2016, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.7 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.