# NTSB ATL83FA171: Boeing A75N1, N74189, Kennesaw, GA, April 27, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Field investigation · Final report
- Date: April 27, 1983, 18:30 local (22:30 UTC)
- Place: Kennesaw, GA
- Coordinates: 34.020168, -84.610771 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=34.0202&lon=-84.6108&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 5906
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL83FA171
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5906/pdf
- Page: https://openairdocs.org/ntsb/ATL83FA171

## 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, maneuvering
  - engine assembly,piston - disintegrated (cause)
- Forced landing, landing - flare/touchdown
  - terrain condition - none suitable (contributing factor)
- Nose over, landing - flare/touchdown
  - terrain condition - dirt bank/rising embankment (contributing factor)

## Analysis

WHILE OVER A WOODED AREA AT 800 FT AGL THE ENG FAILED. THE PLT WAS UNABLE TO REACH A SUITABLE LANDING SITE BEFORE CONTACTING THE GROUND ON AN EMBANKMENT BELOW THE ELEVATION OF A NEARBY ROAD. THE ACFT STRUCK A TELEPHONE CABLE PRIOR TO TOUCHDOWN. THE #4 CONROD WAS FOUND BROKEN NEAR THE INBOARD END (ROUGH GRANULAR FRACTURE) & WAS BROKEN AT THE OUTBOARD END. THE PISTON WRIST PIN WAS DISINTEGRATED. THE PISTON PIN BOSS WAS BROKEN ON ONE END. CHUNKS & METAL SHAVINGS WERE FOUND THROUGHOUT THE ENG. THERE WAS NO EVIDENCE OF OIL STARVATION. THE ENG WAS LAST OVERHAULED IN 1973, 124 TACH HOURS PRIOR TO THE ACCIDENT, & ALL PISTONS WERE NEW. THE ACFT HAD OPERATED 4 HRS SINCE THE LAST ANNUAL ON 9/9/82 & ONLY 7 HRS SINCE THE PREVIOUS ANNUAL ON 7/81.

## Aircraft

- Registration: [N74189](https://openairdocs.org/deregistered/N74189-2024-03-16), registration cancelled 2024-03-16, S/N 75717, built 1941 (OpenAirDocs)
- Reported make and model: BOEING A75N1
- Registry model: [Boeing PT-17](https://openairdocs.org/model/boeing-pt-17) (registry code 1380136) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 75717
- Airframe hours: 3846
- Engines: P&W R-985-AN-3 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: James A. Settle, Jr.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, September 9, 1982, 4 hours before
- Departed: 8A4, KENNESAW, GA
- Airport: 8A4, Mccollum

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: rear; flight hours: 496 total, 219 in this make and model, 385 as pilot in command, 3 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 270° at 2 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 79 °F, dew point 39 °F
- Altimeter: 30.00 inHg
- Observed at: MGE, 8 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 19830427018779A](https://openairdocs.org/incident/19830427018779A), Apr 27, 1983: Boeing A75N1, Kennesaw, GA, Substantial damage. Engine quit on local flight. Struck embankment on forced landing. A connecting rod failed at the inboard end.

## Other investigations on N74189 (1)

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.

- [NTSB ATL82DA123](https://openairdocs.org/ntsb/ATL82DA123), May 1, 1982: Boeing A75N1 (N74189), Marietta, GA, minor damage

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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