ERA09LA081

NTSB accident investigation · Merrell Stephen F1 Rocket · Sebastian, FL · December 7, 2008

Accident · No injuriesLimited investigationFinal report
Date
December 7, 2008, 16:19 local (21:19 UTC)
Place
Sebastian, FL
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N757SMMerrell Stephen F1 Rocket
Defining event
Approach-VFR pattern downwind: Fuel starvation
Weather
Visual (VMC) · Day
Status
Completed · report July 14, 2009
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20081207854469A
Case key
69540

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

A loss of engine power due to fuel starvation as a result of the pilot's incorrect positioning of the fuel selector valve.

Findings · 3

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.

Fuel system: fuel selector/shutoff valveAircraft › Aircraft systems · Incorrect use/operationMerrell Stephen F1 ROCKET EVO: 1 caseAll aircraft: 176 casesProbable cause
Fluids: fuelAircraft › Fluids/misc hardware · Fluid managementMerrell Stephen F1 ROCKET EVO: 1 caseAll aircraft: 1,695 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 the amateur-built airplane elected to operate the airplane on the accident date with the fuel selector positioned to the right tank, and flew to a nearby airport where he performed an uneventful full-stop taxi-back landing. The pilot initiated takeoff with the fuel selector positioned to the right tank which was nearly empty and contrary to the Before Take Off checklist, and remained in the traffic pattern. While on the downwind leg abeam the approach end of the intended runway with another airplane on the extended downwind leg, the engine experienced a loss of power due to fuel starvation. He regained control of the airplane, which took 15 to 20 seconds, maintained best glide airspeed and then turned towards the runway. Unable to land on the runway, he maneuvered the airplane for a forced landing, but before ground contact he switched the fuel selector to the left tank position. Engine power was not restored and the airplane was substantially damaged during the off-airport forced landing. Postaccident examination revealed, a total of approximately 15 gallons of fuel in the left fuel tank, while the right fuel tank was empty. The fuel tanks were not breached and there was no evidence of fuel leakage at the scene.

Factual narrative

On December 7, 2008, about 1619 eastern standard time, an experimental amateur built Merrell F1 Rocket EVO, N757SM, registered to and operated by a private individual, experienced a loss of engine power and was substantially damaged during an off airport forced landing near Sebastian Municipal Airport (X26), Sebastian, Florida. Visual meteorological conditions prevailed at the time and no flight plan was filed for the 14 Code of Federal Regulations (CFR) Part 91 personal local flight from X26. The commercial-certificated pilot, the sole occupant, was not injured. The flight originated about 4 minutes earlier from X26. The pilot stated that the airplane was fueled the day before at X26 which brought the usable fuel supply to approximately 45 gallons. The airplane was then flown to Rockledge Airport (21FA), and secured; no discrepancies were noted during the return flight after fueling. The flight duration was 1.2 hours which included a climb at full throttle to 7,000 feet mean sea level. The pilot further stated that on the afternoon of the accident date, he performed a preflight inspection of the airplane and reported observing a "skim amount of fuel" in the right fuel tank, while the left tank contained an estimated three inches greater quantity of fuel. He elected to depart 21FA with the fuel selector positioned to the right fuel tank and proceeded to X26, where he performed a full stop taxi back landing on runway 04. He performed an engine run-up before departure, and after takeoff with the fuel selector positioned to the right tank, the flight remained in left traffic pattern for runway 04. During the downwind leg when the flight was abeam the approach end of runway 04, behind another airplane that was on an extended downwind, the engine lost power. He had to regain control of the airplane which took 15-20 seconds, maintained best glide airspeed, and turned towards the runway. Realizing he would be unable to land on the runway, he maneuvered the airplane for a forced landing. Before ground contact he switched the fuel selector to the left tank position but this did not restore engine power. After coming to rest upright, he evacuated the airplane and called 911 for assistance. Inspection of the airplane and accident site was performed the following day by an FAA airworthiness inspector. The examination of both revealed no evidence of fuel leakage, which was also later confirmed by a State of Florida Department of Environmental Protection employee. The fuel selector was found positioned to the left tank, and the fuel tanks were not breached. The fuselage was broken forward of the horizontal and vertical stabilizers, and all three propeller blades were bent aft. The airplane was released for recovery. According to an individual who helped recover the airplane, the right fuel tank was empty, and the left fuel tank contained approximately 15 gallons. An individual who retained the wreckage following recovery confirmed neither fuel tank wasbreached. No obstructions of the fuel supply system from each wing root area to the engine compartment were noted. Additionally, fuel was noted in the fuel gascolator, in the fuel line between the auxiliary fuel pump and engine-driven fuel pump, and also in the bottom portion of the engine-driven fuel pump. Safety Board review of the Before Take Off checklist revealed the fuel selector is to be positioned to the fullest tank.

Aircraft

Registration
N757SM
Reported as
Merrell Stephen F1 Rocket
Category
Airplane, amateur-built
Serial number
150
Airframe hours
135
Engine
Mattituck TMX-540, 250 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Stephen Merrell
Registered owner
Stephen Merrell
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · October 27, 2008 · 20 hours before
Departed
X26 · Sebastian, FL
Destination
X26 · Sebastian, FL
Airport
X26 · Sebastion Municipal Airport, runway 04, 4,024 × 150 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
35
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
January 9, 2008
Seat
Front
Flight hours
425 total · 115 in this make and model · 353 as pilot in command · 2 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
350° at 10 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
63 °F, dew point 41 °F
Altimeter
30.00 inHg
Observed at
VRB, 10 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.