NTSB Identification: DEN85LA133.
The docket is stored on NTSB microfiche number 27466.
Accident occurred Monday, May 13, 1985 in RAPELJE, MT
Aircraft: PIPER PA-36, registration: N44260
Injuries: 1 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 ACFT SETTLED BACK TO GROUND CONTACT AFTER REACHING AN ALT (EST BY THE PLT) OF 60 FT AGL DURING TAKEOFF INITIAL CLIMB. THE PLT STATED THAT HE RECOGNIZED THE ACFT WAS SETTLING TOWARD THE GROUND & NOTICED A DISSIPATION OF AIRSPEED. THE PLT SAID THAT HE THEN 'ELECTED TO HOLD LOAD AS LONG AS POSSIBLE BEFORE DUMPING. I DUMPED THE LOAD 20 FT ABOVE THE POINT WHERE I KNEW I WAS GOING TO IMPACT THE GROUND.' THE DENSITY ALT WAS COMPUTED TO BE 4700 FT (ARPT FLE 3800 FT) BY THE IIC. IN THE AREA OF THE PLTS REPORT RESERVED FOR RECCOMMENDATIONS FOR PREVENTION (OF THIS ACCIDENT TYPE) THE PLT WROTE 'I BELIEVE THAT I GOT INTO A SITUATION KNOWN AS'REGION OF REVERSE COMMAND.'' THE DEFINITION OF THIS PHENOMENONDESCRIBES AN AERODYNAMIC SITUATION IN WHICH THE TOTAL DRAG OF THE ACFT INCREASES AS THE AIRSPEED DECREASES. THIS DRAG INCREASES TO A POINT WHERE INSUFFICIENT POWER IS AVAILABLE TO MAINTAIN ALTITUDE. THE PLT ALSO REPORTED THAT THE ACFT LOAD CONSISTED OF 200 GALLONS OF 2,4,D & ROUNDUP, IN ADDITION TO 55 GALLONS OF AVIATION FUEL ON BOARD.

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

PREFLIGHT PLANNING/PREPARATION..INADEQUATE..PILOT IN COMMAND

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

ROTATION..PREMATURE..PILOT IN COMMAND

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

AIRCRAFT PERFORMANCE,CLIMB CAPABILITY..EXCEEDED

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

STALL/MUSH..NOT CORRECTED..PILOT IN COMMAND

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

LOAD JETTISON..DELAYED..PILOT IN COMMAND




Contributing Factors

WEATHER CONDITION..HIGH DENSITY ALTITUDE




Contributing Factors

AIRPORT FACILITIES,RUNWAY/LANDING AREA CONDITION..LOOSE GRAVEL/SANDY


Contributing Factors

EXPECTANCY..PILOT IN COMMAND

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