NTSB Identification: FTW88DRG11.
The docket is stored on NTSB microfiche number 37404.
Accident occurred Saturday, July 16, 1988 in PORT ISABEL, TX
Probable Cause Approval Date: 07/03/1989
Aircraft: ENSTROM F28A, registration: N9087
Injuries: 2 Uninjured.

THE PILOT REPORTED THAT HE HAD ACCOMPLISHED A MAX-PERFORMANCE TAKEOFF, CLEARED AN OBSTACLE, AND WHEN HE ATTEMPTED FORWARD FLIGHT, THE MAIN ROTOR RPM DECREASED. HE STATED HE WAS UNABLE TO RECOVER THE RPM AND MAINTAIN ALTITUDE SO HE SELECTED A LANDING AREA. DUE TO PERSONS ON THE BEACH SITE, HE CHANGED THE LANDING SITE. HE INCREASED COLLECTIVE AND NOTED THAT THE RPM DECAYED FURTHER. THE AIRCRAFT IMPACTED THE TERRAIN IN A LEVEL ATTITUDE BUT HIGH SINK RATE. THE OUTSIDE AIR TEMPERATURE WAS ABOUT 95 DEGREES FAHRENHEIT.

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:

PERFORMANCE DATA..EXCEEDED..PILOT IN COMMAND

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

ROTORCRAFT FLIGHT CONTROLS..IMPROPER USE OF..PILOT IN COMMAND

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

ADEQUATE ROTOR RPM..NOT MAINTAINED..PILOT IN COMMAND


Contributing Factors

WEATHER CONDITION..HIGH DENSITY ALTITUDE


Contributing Factors

LACK OF TOTAL EXPERIENCE IN TYPE OF AIRCRAFT..PILOT IN COMMAND

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