WPR14CA197

NTSB accident investigation · Cessna 140 · Vacaville, CA · May 21, 2014

Accident · Minor injuriesData collectionFinal report
Date
May 21, 2014, 09:14 local (16:14 UTC)
Place
Vacaville, CA
Injuries
1 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N2256NCessna 140
Defining event
Initial climb: Loss of engine power (partial)
Weather
Visual (VMC) · Day
Status
Completed · report July 30, 2014
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
FAA FSDO
FAA report
20140521007249A
Case key
89244

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 use of excessive brakes during landing, which resulted in a nose over. Contributing to the accident was a partial loss of engine power during takeoff initial climb, likely due to carburetor ice.

Findings · 4

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotCessna 140: 56 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: surface speed/brakingAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 140: 8 casesAll aircraft: 238 casesProbable cause
Engine fuel and control: fuel control/carburetorAircraft › Aircraft power plant · Not specifiedCessna 140: 2 casesAll aircraft: 195 casesProbable cause
Temp/humidity/pressure: conducive to carburetor icingEnvironmental issues › Conditions/weather/phenomena · Effect on operationCessna 140: 4 casesAll aircraft: 435 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 was taking off for a personal local flight and about 150 feet in the air, the engine lost partial power. The pilot decided to land the airplane on the remaining runway. As the airplane approached the end of the runway, the pilot said he applied the brakes too hard, and the airplane nosed over. The airplane sustained substantial damage to the wings, fuselage, vertical stabilizer, and rudder. The pilot said he had replaced two engine cylinders, and during the previous days he had run the engine on the ground in accordance with the cylinder break-in procedure. The accident flight was the first flight after the engine repair. Prior to the flight, he had done an extended ground run without the use of carburetor heat. He said during the initial climb the engine lost power, acting like it might have had water in the fuel, but during the preflight inspection, he had sumped the tanks, and found no water. According to a carburetor icing chart, the weather conditions at the time of the accident bordered between serious icing at glide power and serious icing at cruise power.

Factual narrative

The pilot was taking off for a personal local flight and about 150 feet in the air, the engine lost partial power. The pilot decided to land the airplane on the remaining runway. As the airplane approached the end of the runway, the pilot said he applied the brakes too hard, and the airplane nosed over. The airplane sustained substantial damage to the wings, fuselage, vertical stabilizer, and rudder. The pilot said he had replaced two engine cylinders, and during the previous days he had run the engine on the ground in accordance with the cylinder break-in procedure. The accident flight was the first flight after the engine repair. Prior to the flight, he had done an extended ground run without the use of carburetor heat. He said during the initial climb the engine lost power, acting like it might have had water in the fuel, but during the preflight inspection, he had sumped the tanks, and found no water. According to a carburetor icing chart, the weather conditions at the time of the accident bordered between serious icing at glide power and serious icing at cruise power.

Aircraft

Registration
N2256N
Reported as
Cessna 140 (G)
Category
Airplane
Serial number
12492
Built
1947
Airframe hours
3,349
Engine
Cont Motor C85 SERIES, 85 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Mcdonald Kevin
Registered owner
Mcdonald Kevin
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 9, 2014
Departed
KVCB · Vacaville, CA
Destination
KVCB · Vacaville, CA
Airport
KVCB · Nut Tree Airport, runway 2, 4,700 × 75 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
60
Injuries
None
Certificates
Flight engineer, Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Without waivers/limitations
Last flight review
September 30, 2013
Seat
Left
Restraint
3-point
Flight hours
460 total · 56 in this make and model · 351 as pilot in command · 4 in the last 90 days · 1 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
63 °F, dew point 52 °F
Altimeter
29.95 inHg
Observed at
KVCB

Docket · 2

The files NTSB released with the investigation on June 19, 2014, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.5 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.

Other investigations on N2256N · 2

Matched to the same aircraft by N-number and date.