# NTSB ATL93LA013: Patrick F. Bowers Corbin JR. ACE E, N110PB, Woodstock, GA, October 18, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: October 18, 1992, 18:00 local (22:00 UTC)
- Place: Woodstock, GA
- Coordinates: 34.09906, -84.50962 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=34.0991&lon=-84.5096&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report June 21, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 8695
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL93LA013
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/8695/pdf
- Page: https://openairdocs.org/ntsb/ATL93LA013

## Probable cause

THE SEPARATION OF THE PROPELLER FROM THE AIRCRAFT.

## Sequence of events

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

- Airframe/component/system failure/malfunction, cruise - normal
  - propeller system/accessories,blade - separation (cause)
- Forced landing, descent - emergency
- In flight collision with object, descent - emergency
  - object - tree(s)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE AIRCRAFT WAS ON A CROSS COUNTRY FLIGHT UNDER VISUAL METEOROLOGICAL CONDITIONS. DURING THE FLIGHT THE PILOT NOTICED A VIBRATION AND WAS TURNING TOWARD AN AIRPORT, WHEN THE WOODEN PROPELLER DEPARTED THE AIRCRAFT. DURING THE EMERGENCY LANDING, THE AIRCRAFT CONTACTED A GROUP OF TREES, AND WAS SUBSTANTIALLY DAMAGED. THE PROPELLER COULD NOT BE LOCATED.

## Aircraft

- Registration: [N110PB](https://openairdocs.org/deregistered/N110PB-1993-11-30), registration cancelled 1993-11-30, S/N 101 (OpenAirDocs)
- Reported make and model: PATRICK F. BOWERS CORBIN JR. ACE E (CORBIN JR.)
- Registry model: [Bowers Patrick F CORBEN JR ACE E](https://openairdocs.org/model/bowers-patrick-f-corben-jr-ace-e) (registry code 05612YP) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 101
- Airframe hours: 198
- Engines: CONTINENTAL C-85-12-F 85 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Marchman, George G.
- Registered owner: Marchman, George G.
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Annual, November 30, 1991, 26 hours before
- Departed: 00A, STONE MOUNTAIN, GA
- Destination: 6AO, CARTERSVILLE, GA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 53; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 500 total

## Weather

- Conditions: Visual (VMC), Day
- Wind: 310° at 6 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 68 °F, dew point 41 °F
- Altimeter: 30.00 inHg
- Observed at: PDK, 15 nm away

## 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 19921018042299A](https://openairdocs.org/incident/19921018042299A), Oct 18, 1992: Woodstock, GA, Substantial damage. Propeller departed the aircraft. Crash landed in trees. Severe vibration preceeded the event.

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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