NTSB Identification: FTW85FA088.
The docket is stored on NTSB microfiche number 27103.
Accident occurred Wednesday, December 26, 1984 in SAN ANTONIO, TX
Aircraft: MOONEY M20J, registration: N5681K
Injuries: 4 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.

THE NON-INSTRUMENT RATED PLT OBTAINED A WX BRIEFING & FILED AN IFR FLT PLAN ALTHOUGH POOR WX CONDITIONS EXISTED (200 FT CEILING & ONE-HALF MI VISIBILITY) AT SAN ANTONIO. THE TOWER INSTRUCTIONS TO N5681K WERE TO FLY RWY HEADING (120 DEG) AFTER DEPARTURE, HOWEVER, WHEN THE ACFT MADE A LEFT TURN AFTER TAKEOFF, THE ACFT WAS INSTRUCTED TO TURN RT TO A HEADING OF 180 DEG. THE PLT ACKNOWLEDGED THE HEADING CHANGE BUT DID NOT COMPLY WITH THE INSTRUCTIONS. THIS WAS THE LAST CONTACT WITH THE PLT. DURING THE INVESTIGATION A COMPUTER-GENERATED GROUND TRACK REVEALED A LEFT TURN OF 495 DEG, FOLLOWED BY RT TURN OF 45 DEG WHICH WAS HELD FOR ABOUT ONE-HALF MIN & THEN ANOTHER RT TURN OF ABOUT 50 DEG BEFORE DISAPPEARING FROM RADAR.

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

FLIGHT INTO KNOWN ADVERSE WEATHER..INTENTIONAL..PILOT IN COMMAND

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

IFR PROCEDURE..NOT FOLLOWED..PILOT IN COMMAND

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

OVERCONFIDENCE IN PERSONAL ABILITY..PILOT IN COMMAND


Contributing Factors

WEATHER CONDITION..LOW CEILING

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