NTSB Identification: FTW86FA156.
The docket is stored on NTSB microfiche number 31371.
Accident occurred Saturday, August 30, 1986 in HOUSTON, TX
Aircraft: GREAT LAKES 2T-1A-2, registration: N6198L
Injuries: 1 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 ENDS OF THE OUTER STRING AND THE INNER REINFORCING WIRE OF THE ENGINE AIR INTAKE DUCT WERE NOT PROPERLY POSITIONED UNDER THE DUCT CLAMP DURING INSTALLATION. AS A RESULT, THEY UNWOUND DURING ENGINE OPERATION AND MOVED OUT OF THEIR NORMAL POSITION ON AND IN THE DUCT RESPECTIVELY. THIS ALLOWED THE WALL OF THE DUCT TO LOSE ITS RIGIDITY AND COLLAPSE WHICH RESULTED IN A LOSS OF ENGINE INTAKE AIR AND SUBSEQUENT POWER FAILURE. THE PILOT ATTEMPTED TO RETURN TO THE AIRPORT WITH ONLY 100 FEET OF ALTITUDE. THE ACFT STALLED DURING THE TURN WITH INSUFFICIENT ALT TO RECOVER BEFORE IMPACT OCCURRED.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:INDUCTION AIR CONTROL/SYSTEM..FAILURE,TOTAL
The National Transportation Safety Board determines the probable cause(s) of this accident to be:AIRSPEED..NOT MAINTAINED..PILOT IN COMMAND
EMERGENCY PROCEDURE..POOR..PILOT IN COMMAND
MAINTENANCE,INSPECTION..INADEQUATE..OTHER MAINTENANCE PERSONNEL
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