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NTSB Report

February 14, 2009 · Cessna T337 D · N86242

Rialto, CA

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
February 14, 2009
Injury Outcomes
1 injury (1 minor injury)
Location
Rialto, CA
Aircraft
Cessna T337 D
Tail Number
N86242
Operator
Donald a Benart
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
WPR09LA115

Shortly after takeoff the twin-engine airplane's climb performance deteriorated. The airplane climbed to 300-400 feet above ground level, then made a right turn. The pilot said that the airplane was not climbing sufficiently to clear the rising terrain that was ahead. He executed a forced landing into a dirt field 1/2 mile north of the departure airport. The pilot did not state that he executed the published engine out emergency procedures before executing the landing. The forward engine propeller exhibited damage consistent with the production of power; the rear engine propeller exhibited very little damage. Investigators were able to start and run the rear engine. Using the flight manual the calculated single-engine performance (rear engine out) was determined to be 550 feet per minute rate of climb.

NTSB Probable Cause

A partial loss of engine power to one engine during initial climb for undetermined reasons.

Full Narrative

On February 14, 2009, about 1000 Pacific standard time, a Cessna T337/D, N86242, made a forced landing 0.5 miles north of Rialto Municipal Airport, Rialto, California. The airplane was operated by the owner under Title 14 Code of Federal Regulations Part 91. The private pilot received minor injuries, and the airplane was substantially damaged. Visual meteorological conditions prevailed and no flight plan had been filed. The pilot reported to the National Transportation Safety Board investigator that shortly after takeoff the airplane's climb performance deteriorated, and it felt like the airplane had lost thrust. The airplane climbed to 300 - 400 feet above ground level (agl), then made a right turn. The pilot said that the airplane was not climbing sufficiently to clear the rising terrain that was ahead. He executed a forced landing into a dirt field 1/2 mile north of the airport. The pilot did not state that he executed the published engine out emergency procedures. The nearest aviation weather recording station was San Bernardino International Airport, which recorded at 1053: calm winds; 10 miles visibility; clouds scattered at 3,000 feet; and the temperature was 48 degrees F. On February 25, 2009, the Safety Board investigator-in-charge (IIC), and a Federal Aviation Administration (FAA) inspector examined the airplane. The front engine propeller exhibited chordwise scratches and blade tip curling, consistent with power production. The rear engine propeller exhibited a single gouge on one blade, and light chordwise scratches on the tip of the other blade. The top spark plugs were removed from the rear engine and thumb compression was achieved on all cylinders. The rear engine was rotated by hand and audible clicking of the magnetos could be heard. Fuel was observed in the engine driven fuel pump fuel input line. The spark plugs were replaced. The flap lever was set to 1/3 in the cockpit, and engine control continuity was established from the cockpit to both engines. The pilot reported that the weight of the airplane at the time of the accident was 3,836 pounds. The area was cleared and the rear engine was started on the second attempt. The engine was run at 1,700 rpm for over 2 minutes, then ran up to 2,000 rpm, and the propeller cycled. Oil pressure was stable at 45 psi, and both magnetos were checked with a corresponding 50 rpm drop on each. The Cessna 337 owner's manual states that at an aircraft weight of 3,800 pounds, outside air temperature of 59 degrees F, and sea level, the single engine climb performance (rear engine out) is 550 feet per minute rate of climb. The procedures for a continued takeoff with an engine out include retracting the flaps, retracting the landing gear, and feathering the propeller of the inoperative engine.

Flight

Event TypeAccident
Event Time10:00 PST
Nearest AirportRialto Municipal Airport (0nm)
Flight Plan FiledUnknown
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftCessna T337 D
Tail NumberN86242
Aircraft CategoryAir
DamageSubstantial
OperatorDonald a Benart
Operating RulePart 91
Engines2
Engine TypeReciprocating
Engine DetailsTeledyne Continental Motors · TSIO360 · Reciprocating · 210 | Teledyne Continental Motors · TSIO360 · Reciprocating · 210
Seats4

People & Injuries

Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 70 · Second Class · Minor

Conditions

ConditionsVMC
LightDaylight
WindCalm
Visibility10 sm
CeilingNone
Temperature / Dew Point48 / 36 C
Altimeter30.12 inHg
Observation Time18:53
Weather SourceWFAC

Appendix: Source Data