# NTSB ATL83LA170: Cessna A-188B, N4874R, New Hope, AL, April 26, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 26, 1983, 08:30 local (14:30 UTC)
- Place: New Hope, AL
- Coordinates: 34.530673, -86.410011 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=34.5307&lon=-86.4100&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): 6058
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL83LA170
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/6058/pdf
- Page: https://openairdocs.org/ntsb/ATL83LA170

## 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 - aerial application
  - engine assembly,crankshaft - failure,total (cause)
  - engine assembly,crankshaft - fatigue (cause)
- Forced landing, landing - flare/touchdown
  - object - wire,static (contributing factor)

## Analysis

THE ACFT STRUCK POWERLINES AND CRASHED DURING AN EMERGENCY LANDING AFTER A LOSS OF POWER WHILE SPRAYING ON AN AERIAL APPLICATION MISSION. THE PLT STATED THAT WHILE SPRAYING HE NOTICED OIL BEGINNING TO COVER THE WINDSHIELD. HE HAD BEGUN ACLIMB AND DUMPED THE CHEMICAL LOAD WHEN THE PROPELLER SEPARATED FROM THE ACFT. DURING THE FORCED LANDING THE TAILWHEEL STRUCK A POWERLINE AND THE ACFT LANDED IN A TAIL LOW ATTITUDE. EXAMINATION OF THE ACFT SHOWED FAILURE OF THE CRANKSHAFT IN FATIGUE AND SEPARATION AT THE OIL SLINGER FLANGE.

## Aircraft

- Registration: [N4874R](https://openairdocs.org/deregistered/N4874R-1989-05-04), registration cancelled 1989-05-04, S/N 18802393T (OpenAirDocs)
- Reported make and model: CESSNA A-188B
- Registry model: [Cessna A188B](https://openairdocs.org/model/cessna-a188b) (registry code 2073005) (OpenAirDocs)
- Category: Airplane
- Serial number: 18802393T
- Airframe hours: 2130
- Engines: CONTINENTAL IO-520-D-9B 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Underwood Aviation
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, March 28, 1983, 23 hours before
- Departed: M82, HUNTSVILLE, AL

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 8,300 total, 2,000 in this make and model, 50 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 5 statute miles
- Lowest ceiling: none

## 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 19830426016229A](https://openairdocs.org/incident/19830426016229A), Apr 26, 1983: Cessna A188B, New Hope, AL, Substantial damage. Aircraft crashed during attempted emergency landing when prop came off because of crankshaft failure.

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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