# NTSB FTW83LA269: Beech 95-B55, N1757W, San Antonio, TX, June 7, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 7, 1983, 11:45 local (16:45 UTC)
- Place: San Antonio, TX
- Coordinates: 29.350118, -98.609664 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=29.3501&lon=-98.6097&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 20926
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW83LA269
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/20926/pdf
- Page: https://openairdocs.org/ntsb/FTW83LA269

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Overrun, takeoff
  - pitot/static system - foreign object (cause)
  - aircraft preflight - inadequate, pilot in command (cause)
  - flight/nav instruments,airspeed indicator - inoperative (cause)
  - aborted takeoff - delayed, pilot in command (cause)
  - airport facilities,runway/landing area condition - wet (contributing factor)
- On ground/water encounter with terrain/water, takeoff
  - terrain condition - ditch (contributing factor)
- Nose over, takeoff

## Analysis

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.

## Aircraft

- Registration: [N1757W](https://openairdocs.org/deregistered/N1757W-2012-08-10), registration cancelled 2012-08-10, S/N TC-1498, built 1972 (OpenAirDocs)
- Reported make and model: BEECH 95-B55
- Registry model: [Beech 95-B55 (T42A)](https://openairdocs.org/model/beech-95-b55-t42a) (registry code 1152706) (OpenAirDocs)
- Registry engine: [Continental I0-470 series](https://openairdocs.org/engine/continental-i0-470-series) (registry code 17027, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: TC-1498
- Airframe hours: 2291
- Engines: CONTINENTAL IO-470-L 260 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Eternacrete Ltd.
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, March 25, 1983, 18 hours before
- Airport: XS80, Rio Medina, runway 33, 2,900 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 54; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 6,000 total, 6,000 as pilot in command

## Weather

- Conditions: Visual (VMC), Day
- Wind: 300° at 12 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 70 °F

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19830607022239A](https://openairdocs.org/incident/19830607022239A), Jun 7, 1983: Beech 95B55, San Antonio, TX, Substantial damage. Pilot aborted takeoff because of airspeed malfunction. Aircraft went off end of runway and flipped inverted.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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