# NTSB FTW83FA221: Beech E33, N8314N, San Angelo, TX, May 5, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Field investigation · Final report
- Date: May 5, 1983, 17:49 local (22:49 UTC)
- Place: San Angelo, TX
- Location: 31.4638° N, 100.4370° W: Placed by OpenAirDocs: center of San Angelo, TX, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=31.4638&lon=-100.4370&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 20720
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW83FA221
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/20720/pdf
- Page: https://openairdocs.org/ntsb/FTW83FA221

## Analysis

THE ENG FAILED IN FLT & THE ACFT CRASHED 1 MI SHORT OF RWY 18 DURING AN EMERGENCY LANDING INTO MATHIS ARPT. THE ACFT'S FUSELAGE WAS STREAKED WITH FRESH OIL. THE RIGID OIL PRESSURE LINE, EXTENDING FROM THE ENG TO THE FIREWALL, FAILED DUE TOFATIGUE CRACKING FROM MULTIPLE ORIGINS ON OPPOSITE SIDES OF THE OUTSIDE DIAMETER OF THE LINE AT THE BEGINNING OF A HEAVILY FLARED RADIUS. THE PARTS CATALOG FOR THE BE-E33 REQUIRES A FLEXIBLE HOSE. THE ENG HAD BEEN OVERHAULED ON 7/20/82, 121 HRS PRIOR TO THE ACCIDENT. IT IS NOT KNOWN WHEN THE RIGID LINE WAS INSTALLED IN PLACE OF FLEXIBLE HOSE. AS A RESULT OF THE OIL STARVATION THE #4 CONROD FAILED.

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, approach - vfr pattern - final approach
  - lubricating system,oil line - incorrect (cause)
  - maintenance,replacement - improper, other maintenance personnel (cause)
  - lubricating system,oil line - fatigue (cause)
  - fluid,oil - starvation (cause)
  - engine assembly,connecting rod - failure,total (cause)
- Forced landing, landing - flare/touchdown
- In flight collision with terrain/water, landing - flare/touchdown
  - terrain condition - ditch (contributing factor)
  - object - tree(s) (contributing factor)
- Main gear collapsed, landing - roll
  - landing gear,main gear - overload

## Aircraft

- Registration: [N8314N](https://openairdocs.org/deregistered/N8314N-1983-11-23), registration cancelled 1983-11-23, S/N CD-1155 (OpenAirDocs)
- Reported make and model: BEECH E33
- Registry model: [Beech E33](https://openairdocs.org/model/beech-e33) (registry code 1151422) (OpenAirDocs)
- Category: Airplane
- Serial number: CD-1155
- Airframe hours: 1466
- Engines: CONTINENTAL IO-470-KNC 225 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Registered owner: Arthur M. Tolson
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, March 2, 1983, 24 hours before
- Departed: 21XS, BIG SPRING, TX
- Destination: AUS, AUSTIN, TX
- Airport: SJT, Mathis

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 48; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 850 total, 850 in this make and model, 750 as pilot in command, 15 in the last 90 days, 11 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 170° at 14 knots, gusting 22
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 84 °F, dew point 41 °F
- Observed at: SJT

## 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 19830505017309A](https://openairdocs.org/incident/19830505017309A), May 5, 1983: Beech E33, San Angelo, TX, Substantial damage. Oil pressure line failed allowing loss of oil and engine stopage. Crash occurred during emergency landing.

## Other investigations on N8314N (1)

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

- [NTSB CHI70F0395](https://openairdocs.org/ntsb/CHI70F0395), Dec 25, 1969: Beech E33 (N8314N), Milan, IL, substantial damage

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

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