NTSB Identification: FTW83LA269.
The docket is stored on NTSB microfiche number 23066.
Accident occurred Tuesday, June 07, 1983 in SAN ANTONIO, TX
Aircraft: BEECH 95-B55, registration: N1757W
Injuries: 2 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

WHILE ON THE TAKEOFF ROLL, WITH APRX 1400 FT OF RWY REMAINING, THE PLT NOTICED THAT THERE WAS NO INDICATION OF AIRSPEED. HE THEREFORE ELECTED TO ABORT THE TAKEOFF, THE RWY WAS A COMBINATION OF ASPHALT & TURF. FOLLOWING HIS DECISION TO ABORT, THE REMAINING PORTION OF THE RWY WAS TURF, STILL DAMP FROM THE MORNING DEW. HE WAS UNABLE TO STOP ON THE REMAINING RWY. AFTER OVERRUNNING THE RWY, THE ACFT HIT AN IRRIGATION DITCH & NOSED OVER. A POST- ACCIDENT EXAM REVEALED INSECT LARVAE IMBEDDED IN THE PITOT TUBE, ABOUT 1/8 INCH FROM THE TUBE'S END. ACCORDING TO THE PLT, THE ACFT HAD BEEN PARKED OUTSIDE & HAD NOT BEEN FLOWN FOR APRX 70 DAYS PRIOR TO THE ACCIDENT FLT. HE FURTHER RELATED THAT HE NOTICED NOTHING ABNORMAL ABOUT THE PITOT SYS DURING HIS PREFLT INSPECTION.

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

PITOT/STATIC SYSTEM..FOREIGN OBJECT

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

AIRCRAFT PREFLIGHT..INADEQUATE..PILOT IN COMMAND

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

FLIGHT/NAV INSTRUMENTS,AIRSPEED INDICATOR..INOPERATIVE

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

ABORTED TAKEOFF..DELAYED..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..DITCH


Contributing Factors

AIRPORT FACILITIES,RUNWAY/LANDING AREA CONDITION..WET

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