LAX02LA256

NTSB accident investigation · Dodd RV-4 · Tehachapi, CA · August 21, 2002

Accident · Minor injuriesLimited investigationFinal report
Date
August 21, 2002, 13:59 local (20:59 UTC)
Place
Tehachapi, CA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N62VRDodd RV-4
Weather
Visual (VMC) · Day
Status
Completed · report September 29, 2004
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20020821022349A
Case key
55547

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 owner/builder's improperly fabricated and installed fuel line, which cracked at the point of the flare, resulting in a fuel leak and loss of engine power during the takeoff climb. A contributing factor was the soft terrain that jammed the landing gear wheels, nosing over the airplane during the ensuing forced landing.

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) - mech failure/malfTakeoff - initial climb
Fuel system,line - crackedCause
Fluid,fuel - leakCause
Maintenance,installation - improperOwner/builderCause
Forced landingEmergency landing after takeoff
Nose overLanding - roll
Terrain condition - softFactor
Landing gear,wheel - jammedFactor

Analysis

The airplane nosed over during a forced landing in a field following a loss of engine power during the departure climb. The pilot manufactured the airplane, and it was undergoing its first test flight following the issuance of a Special Airworthiness Certificate. Approximately 10 minutes after takeoff the engine lost power. The pilot elected to land in a field. The landing forced debris into the wheel pants, which locked up the wheels. The airplane nosed over coming to rest inverted. Post accident examination of the engine by an FAA inspector revealed a fuel leak around the "B" nut that attached the aluminum fuel line to the throttle body. Removal of the nut and line revealed that the line cracked at the point of the flare. The builder had manufactured and installed this line.

Factual narrative

On August 21, 2002, at 1359 Pacific daylight time, an experimental Dodd RV-4 airplane, N62VR, nosed over during a forced landing following a loss of engine power during the initial climb out from the Tehachapi Municipal Airport (TSP), Tehachapi, California. The airplane, operated by the owner/builder under the provisions of 14 CFR Part 91, sustained substantial damage. The pilot, the sole occupant, sustained minor injuries. Visual meteorological conditions prevailed for the local area test flight, which departed about 10 minutes earlier. A flight plan had not been filed.

In a written statement, the pilot stated that approximately 10 minutes after takeoff the "engine quit." He executed an emergency landing into an uncultivated field about 1/4 mile southeast of the airport. The landing forced debris into the wheel pants, which locked up the wheels. The airplane nosed over, coming to rest upside down.

The pilot manufactured the airplane, and the Federal Aviation Administration (FAA) issued a Special Airworthiness Certificate on August 17, 2002. It was undergoing its first test flight for Phase 1 flight testing required by FAR Part 91.319.

The FAA inspector who responded to the accident interviewed the pilot. The pilot stated that prior to takeoff he did a number of full power ground runs followed by two high-speed taxi tests. After takeoff the engine began to surge and run rough. The pilot richened the mixture; however, the engine lost power.

The FAA inspector examined the airplane on August 22, 2002. The airplane had been moved to a hangar. Post accident examination of the engine revealed a fuel leak from a "B" nut of an aluminum hard line that supplied metered fuel to the throttle body. The inspector removed this line, and found a crack at the point of the flare. The builder had manufactured and installed this line.

Aircraft

Registration
N62VR
Reported as
Dodd RV-4
Category
Airplane, amateur-built
Serial number
1051
Airframe hours
0.3
Engine
Lycoming IO-360, 200 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Lee P. Dodd
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · April 29, 2002 · 0.3 hours before
Departed
TSP · Tehachapi, CA
Destination
TSP · Tehachapi, CA
Airport
TSP · Tehachapi Municipal, runway 11, 4,035 × 50 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
62
Injuries
Minor
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Last flight review
May 1, 2001
Seat
Front
Flight hours
2,939 total · 12 in this make and model · 2,500 as pilot in command · 66 in the last 90 days · 52 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
260° at 10 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
84 °F
Altimeter
29.92 inHg
Observed at
MHV, 15 nm away

FAA reports on this event · 1

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