NTSB Identification: MKC84FA229A.
The docket is stored on NTSB microfiche number 26562.
Accident occurred Monday, July 23, 1984 in BERTRAND, NE
Aircraft: PIPER PA 36-375, registration: N3930E
Injuries: 1 Fatal,1 Serious.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

N3930E AND N3968E HAD DEPARTED AS A FLIGHT OF TWO FOR AERIAL APPLICATION. THERE AS NO RECORD OF PREFLIGHT BRIEFING OR COORDINATION PLANNING. AT COMPLETION OF OPERATIONS ON THE OBJECT FIELD, N3930E ADVISED N3968E BY RADIO THAT HE WAS MAKING A FINAL CLEANUP SWATH RUN TOWARD THE NORTH ALONG THE WEST BOUNDARY OF THE FIELD. DURING THIS SWATH RUN, HE OBSERVED N3968E HEADED SOUTHBOUND AND TO THE EAST OF HIS POSITION. ON COMPLETION, N3930E PULLED UP, TURNED RIGHT AND BEGAN A DESCENT TO MAKE AN EASTBOUND CLEANUP RUN ALONG THE NORTH BOUNDARY (NO RADIO ADVISORY). THE TWO ACFT COLLIDED HEAD-ON, LEFT WING TO LEFT WING, SEPARATING THE LEFT OUTBOARD WING PANELS. BOTH ROLLED LEFT INTO SUBSEQUENT UNCONTROLLED COLLISION WITH TERRAIN.

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

VISUAL SEPARATION..NOT MAINTAINED..PILOT IN COMMAND

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

VISUAL SEPARATION..NOT MAINTAINED..PILOT OF OTHER AIRCRAFT


Contributing Factors

CREW/GROUP BRIEFING..NOT PERFORMED..PILOT IN COMMAND


Contributing Factors

CREW/GROUP COORDINATION..NOT MAINTAINED..PILOT IN COMMAND


Contributing Factors

RADIO COMMUNICATIONS..NOT MAINTAINED..PILOT IN COMMAND

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