NTSB Identification: FTW86FA066B.
The docket is stored on NTSB microfiche number 32328.
14 CFR Part 137: Agricultural
Accident occurred Tuesday, April 15, 1986 in HANKAMER, TX
Aircraft: GRUMMAN G164A, registration: N8696H
Injuries: 2 Fatal.

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.

TWO GRUMMAN AG CATS OPERATED BY THE SAME AIR SERVICE COLLIDED IN MID AIR. THE ACCIDENT OCCURRED AS ONE WAS DEPARTING AND THE OTHER WAS RETURNING TO A TEMPORARY AIR STRIP ADJACENT TO THE FIELDS THEY WERE FERTILIZING. WITNESSES INDICATED THAT BOTH PILOT ATTEMPTED TO AVOID THE OTHER BY PULLING UP. LOW CHOLINERASE WAS FOUND IN THE TOXICOLOGICAL SAMPLE OF THE OLDER PILOT, WHO WAS THE OWNER OF THE AIR SERVICE.

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

VISUAL LOOKOUT..INADEQUATE..PILOT IN COMMAND

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