NTSB Identification: LAX86LA072.
The docket is stored on NTSB microfiche number 30156.
Accident occurred Thursday, December 19, 1985 in TUCSON, AZ
Aircraft: CESSNA 150L, registration: N10882
Injuries: 1 Serious,1 Minor.

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

AFTER ABOUT A 45 MIN WAIT AS THE NUMBER ONE ACFT FOR DEPARTURE, THE CONTROLLER INFORMED THE PLT THAT HE COULD EXPECT AN ADDITIONAL 3 MIN WAIT BECAUSE OF WAKE TURBULENCE FROM A (LARGE) EC-130 ACFT WHICH WAS APPROACHING FOR A TOUCH & GO LANDING. THE PLT ELECTED TO WAIVE THE TIME INTERVAL FOR THE WAKE TURBULENCE SEPARATON, AND AS THE EC-130 PASSED HIS POSITION THE CONTROLLER ISSUED THE PLT A CLEARANCE FOR TAKEOFF. THE ACFT CLIMBED TO BETWEEN 25 AND 50 FT AGL AND THEN IT ENCOUNTERED THE WAKE TURBULENCE. THE ACFT PITCHED DOWNWARD, ROLLED RIGHT AND DESCENDED UNTIL IT STRUCK THE RWY, 1 MINUTE, 22 SECONDS AFTER RECEIVING ITS TAKEOFF CLEARANCE.

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

PROCEDURES/DIRECTIVES..NOT FOLLOWED..PILOT IN COMMAND

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

JUDGMENT..POOR..PILOT IN COMMAND

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

SAFETY ADVISORY..DISREGARDED..PILOT IN COMMAND

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

IMPROPER USE OF PROCEDURE..PILOT IN COMMAND

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