NTSB Identification: DEN83LA081.
The docket is stored on NTSB microfiche number 21643.
Accident occurred Friday, March 18, 1983 in GUNNISON, CO
Aircraft: CESSNA 421C, registration: N67943
Injuries: 7 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE PLT BEGAN TAKING OFF ON RWY 06 WITH A WIND FROM 190 DEG AT 8 KTS. HE STATED THAT MAX POWER & RPM WERE OBTAINED. HE NOTED THAT HE OBTAINED 39 INCHES OF MANIFOLD PRESSURE & 2235 RPM AT 100 KTS IAS. REPORTEDLY, THE ACFT ROTATED PROPERLY, BUT BEGAN TO VIBRATE & SHUDDER & WOULD NOT LIFT OFF. THE PLT THEN LOWERED THE NOSE & ACCELERATED TO 110 KTS IAS. HOWEVER, AGAIN, THE ACFT WOULD ONLY VIBRATE & SHUDDER & WOULD NOT LIFT OFF. THE PLT THEN BEGAN ABORTING THE TAKEOFF. THE ACFT WENT OFF THE END OF THE RWY AT 70 TO 80 KTS & BECAME AIRBORNE FOR APRX 75 FT AS IT WENT OVER A DROP OFF IN THE TERRAIN. SUBSEQUENTLY, THE ACFT LANDED IN SOFT SOIL & HIGH GRASS WHERE THE GEAR COLLAPSED. AN INVESTIGATION REVEALED THAT THE TEMP WAS 30 DEG & SNOW WAS FALLING. THE PLT BELIEVED THE ACCIDENT RESULTED FROM COLD TEMPS ALONG WITH WATER BLOWN ONTO THE TAIL SURFACES OF THE ACFT. HE DID NOT DESCRIBE THE SURFACE CONDITION ON THE WINGS. STALL SPEED FOR THIS ACFT WAS 86 KTS AT THE MAX GROSS WT & WAS WITH WT & BALANCE LIMITS.

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

ABORTED TAKEOFF..DELAYED..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..SOFT


Contributing Factors

WEATHER CONDITION..TEMPERATURE EXTREMES


Contributing Factors

WEATHER CONDITION..SNOW


Contributing Factors

TERRAIN CONDITION..HIGH VEGETATION


Contributing Factors

WEATHER CONDITION..TAILWIND


Contributing Factors

WRONG RUNWAY..SELECTED..PILOT IN COMMAND


Contributing Factors

AIRPORT FACILITIES,RUNWAY/LANDING AREA CONDITION..WET

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