NTSB Identification: LAX86MA186B.
The docket is stored on NTSB microfiche number 31421.
Accident occurred Sunday, April 20, 1986 in WARNER SPRINGS, CA
Aircraft: Rolladen-Schneider LS-4, registration: N50EH
Injuries: 2 Uninjured.

NTSB investigators traveled in support of this investigation and used data obtained from various sources to prepare this aircraft accident report.

A ROLLADEN-SCHNEIDER LS-4 GLIDER AND AN LTV A7E JET COLLIDED OVER HOT SPRINGS MTN, NEAR WARNER SPRINGS, CA. THE A7E WAS ATTEMPTING A RAPID PULL UP AND THE GLIDER WAS ATTEMPTING A NOSE DOWN, 30 DEG RIGHT TURN WHEN THEY COLLIDED. BOTH AIRCRAFT WERE OPERATING UNDER VISUAL FLT RULES AND LANDED WITHOUT FURTHER INCIDENT. NEITHER PILOT WAS INJURED. THE GLIDER LEFT WING OUTBD 3 FT SECTION WAS SEVERED. THE A7E NOSE COWLING WAS SUBSTANTIALLY DAMAGED AND THE ENGINE INGESTED EXTENSIVE FIBERGLASS MATERIAL. THE COLLISION OCCURRED AS THE A7E WAS EXECUTING A SOUTHBOUND TURN ON VR 1257 AND WAS WITHIN THE ROUTE WIDTH (4NM); THE GLIDER WAS ATTEMPTING TO GAIN LIFT ON THE WEST SIDE OF HOT SPRINGS MTN AND WAS WITHIN VR 1257 ROUTE STRUCTURE. THE A7E PLT HAD INFORMED THE NECESSARY FLT SERV STATIONS THAT THE ROUTE WAS ACTIVE; THE GLIDER PLT HAD NOT CONTACTED THE FLT SERV STATIONS TO DETERMINE IF THE ROUTE WAS ACTIVE.

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

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

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:

CHECKLIST..POOR..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..MOUNTAINOUS/HILLY

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