# NTSB DEN83LA145: Cessna 195A, N1537H, St. George, UT, June 18, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 18, 1983, 10:30 local (16:30 UTC)
- Place: St. George, UT
- Coordinates: 37.179073, -113.59938 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.1791&lon=-113.5994&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16099
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN83LA145
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16099/pdf
- Page: https://openairdocs.org/ntsb/DEN83LA145

## Sequence of events

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

- Airframe/component/system failure/malfunction, takeoff - roll/run
  - propeller system/accessories,blade - fatigue (cause)
  - propeller system/accessories,blade - failure,total (cause)
  - propeller system/accessories,blade - separation
- Loss of control - on ground/water, takeoff - roll/run
  - directional control - not possible, pilot in command (contributing factor)
  - ground loop/swerve - uncontrolled, pilot in command (contributing factor)
- Main gear collapsed, takeoff - roll/run
  - landing gear,main gear - overload

## Analysis

THE PROP BLADE SEPARATED CAUSING THE ACFT TO VEER SHARPLY TO THE LEFT OUT OF CONTROL. THE ACFT CAME TO REST ABOUT 30 FT FROM THE RWY WITH THE RIGHT MAIN LANDING GEAR BROKEN OFF. A METALLURGICAL EXAM REVEALED THAT THE BLADE FAILED FROM FATIGUE. THE FATIGUE ORIGIN WAS AT A SUBSURFACE INCLUSION. A CORROSION CRACK WAS PRESENT FROM THE OUTSIDE SURFACE ON THEOUTER SIDE OF THE BLADE. THIS CRACK SHOWED CORROSION PRODUCTS. THE BLADES WAS OVERHAULED 5 MONTHS PRIOR TO THE ACCIDENT.THE BLADES WERE INSPECTED FOR CRACKS BY USING A DYE PENETRANT TEST IAW THE OVERHAUL MANUAL. AN EDDY CURRENT TEST WAS USED ONLY FOR THE INSIDE OF THE BORE.

## Aircraft

- Registration: N1537H (not matched to a registry record)
- Reported make and model: CESSNA 195A
- Category: Airplane
- Serial number: 7759
- Airframe hours: 7759
- Engines: JACOBS R-755-A2 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Registered owner: Grand Canyon Dories Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, August 8, 1982, 42 hours before
- Destination: WHITMORE, WA
- Airport: SGU, St. George Muni, runway 16, 6,100 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 66; private, commercial; airplane ratings: single-engine land, multi-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 8,010 total, 3,110 in this make and model, 7,610 as pilot in command, 60 in the last 90 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 30 statute miles
- Lowest ceiling: none
- Altimeter: 29.00 inHg
- Observed at: SGU

## 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 19830618025519A](https://openairdocs.org/incident/19830618025519A), Jun 18, 1983: Cessna 195A, St George, UT, Substantial damage. Propeller blade failed during takeoff roll causing pilot to lose control resulting in damaging gear and wing.

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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