ERA11LA400

NTSB accident investigation · Fessenden Alfred Expermental RV-4 · Fort Drum, FL · July 4, 2011

Accident · No injuriesLimited investigationFinal report
Date
July 4, 2011, 08:30 local (12:30 UTC)
Place
Fort Drum, FL
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N3226NFessenden Alfred Expermental RV-4
Defining event
Initial climb: Loss of engine power (total)
Weather
Visual (VMC) · Day
Status
Completed · report April 24, 2012
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20110704013459A
Case key
81118

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

A total loss of engine power for undetermined reasons.

Findings · 1

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.

Not determinedNot determined › Not determined · Unknown/Not determinedFessenden Alfred EXPERMENTAL RV-4: 1 caseAll aircraft: 2,247 casesProbable cause

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

According to the pilot, during the initial climb, about 30 feet above ground level, the engine experienced a total loss of power. He attempted to land on the remaining runway and avoid a ditch located at the end of the runway. However, the airplane's wing struck the ground, and the airplane came to rest facing the opposite direction of travel. The pilot further reported that he had removed the fuel from the fuel tanks to facilitate recovery. A small area of blight was noted near where the airplane came to rest; however, due to the damage to the engine it could not be conclusively determined if fuel was present. A postaccident examination of the engine revealed no evidence of preimpact mechanical malfunctions or abnormalities that would have precluded normal operation. While the airplane was being operated in conditions conducive to serious carburetor icing at glide power, it is not likely that the airplane could have lost engine power during the climb at takeoff power.

Factual narrative

On July 4, 2011, about 0830 eastern daylight time, an experimental, amateur-built RV-4, N3226N, experienced a loss of engine power after takeoff from the Indian Hammock Airport (FL75), Fort Drum, Florida. The certificated private pilot and passenger were not injured. The airplane sustained substantial damage to the right wing and fuselage. The flight was operated under the provisions of 14 Code of Federal Regulations Part 91 as a personal, local flight. Visual meteorological conditions prevailed and no flight plan had been filed. The pilot reported to a Federal Aviation Administration (FAA) inspector, that approximately 30 feet above ground level the engine experienced a total loss of engine power. He had approximately 1,500 feet of runway remaining and he attempted to land the airplane on the remaining runway. He reported that in order to avoid a ditch, located at the end of the runway, he attempted to turn the airplane during the landing rollout, striking the wing on the turf runway. The airplane came to rest facing down the runway, opposite the direction of travel. He further reported that the fuel had been removed from the fuel tanks to facilitate recovery of the airplane. Initial examination by an FAA inspector revealed that the right wing was damaged, the gear had collapsed, and the fuselage was substantially damaged. The fuel tanks were devoid of fuel and due to the damage to the engine the presence of fuel could not be determined. However, it was noted that there was an area of blight approximately 3 square feet, where the airplane came to rest. Examination of the engine revealed that continuity was confirmed throughout the engine and that there were no preimpact mechanical malfunctions that would have precluded normal operation. The 0835 recorded weather at the Okeechobee County Airport (OBE), Okeechobee, Florida, located approximately 19 miles to the south of the accident location, included wind from 100 degrees at 3 knots, visibility 10 miles, clear skies, temperature 25 degrees C, dew point 22 degrees C, and an altimeter of 30.02 inches of mercury. The carburetor icing probability chart from the FAA Special Airworthiness Information Bulletin (SAIB): CE-09-35 Carburetor Icing Prevention, shows a probability of serious icing at glide power at the temperature and dew point recorded at the time of the accident.

Aircraft

Registration
N3226N
Reported as
Fessenden Alfred Expermental RV-4
Category
Airplane, amateur-built
Serial number
243
Airframe hours
440
Engine
Lycoming O-320 SERIES, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · March 1, 2011 · 6 hours before
Departed
FL75 · Fort Drum, FL
Destination
FL75 · Fort Drum, FL
Airport
FL75 · Indian Hammock Airport, runway 11, 3,000 × 100 ft, grass/turf

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
46
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
May 7, 2011
Seat
Front
Flight hours
466 total · 372 in this make and model · 466 as pilot in command · 6 in the last 90 days · 6 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
100° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
77 °F, dew point 72 °F
Altimeter
30.02 inHg
Observed at
OBE, 19 nm away

Docket · 4

The files NTSB released with the investigation on March 21, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.6 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.