NTSB Identification: SEA86FA028.
The docket is stored on NTSB microfiche number 29466.
Nonscheduled 14 CFR
Accident occurred Thursday, December 05, 1985 in PENDLETON, OR
Aircraft: CESSNA 335, registration: N2711U
Injuries: 2 Serious,1 Uninjured.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

AT 500 FT AGL ON DEPARTURE CLIMB, WITH LNDG GEAR UNRETRACTED, PLT FELT VIBRATIONS SIMILAR TO ROUGH-RUNNING ENGINE BUT NOTED NO INSTRUMENT INDICATIONS, THROTTLED BACK AND LEVELED OFF. WHILE TROUBLE-SHOOTING PROBLEM, PLT NOTED ACFT WAS DESCENDING AT 1200 FPM, ADDED PWR BUT VIBRATION INCREASED SO PLT REDUCED PWR, CONCENTRATED ON MAINTAINING 'BLUE-LINE' SPD (105 KNOTS), AND ALLOWED ADFT TO CONTRACT LEVEL SNOW-COVERED TERRAIN IN LEVEL ATTITUDE, GEAR DOWN, FLAPS UP, AT SPEED IN EXCESS OF 105 KNOTS. TEAR-DOWN OF ENGINES AND PROPS REVEALED NO PRE-IMPACT MECHANICAL FAILURE OR MALFUNCTION. BOTH FUEL SELECTORS WERE FOUND TO CONTAIN WATER. ACFT HAD HISTORY OF WATER IN FUEL SYSTEM. FUEL FILLER GAP INNER 'O' RINGS FOUND TO BE EXCESSIVELY WORN AND NO LONGER SEALING

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

FUEL SYSTEM,CAP..LEAK

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

IN-FLIGHT PLANNING/DECISION..IMPROPER..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

EMERGENCY PROCEDURE..IMPROPER..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

FUEL SYSTEM..WATER


Contributing Factors

THROTTLE/POWER CONTROL..NOT MAINTAINED..PILOT IN COMMAND


Contributing Factors

GEAR RETRACTION..NOT PERFORMED..PILOT IN COMMAND


Contributing Factors

LOWERING OF FLAPS..NOT PERFORMED..PILOT IN COMMAND


Contributing Factors

GEAR RETRACTION..NOT PERFORMED..PILOT IN COMMAND


Contributing Factors

AIRSPEED..EXCESSIVE..PILOT IN COMMAND


Contributing Factors

FLARE..NOT PERFORMED..PILOT IN COMMAND

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