# NTSB MIA84LA186: Cessna A188B, N5630G, Marianna, FL, June 18, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 18, 1984, 07:20 local (13:20 UTC)
- Place: Marianna, FL
- Coordinates: 30.849205, -85.230438 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=30.8492&lon=-85.2304&mi=10
- Phase of flight: [Unknown](https://openairdocs.org/ntsb-phases/990) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 31146
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA84LA186
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/31146/pdf
- Page: https://openairdocs.org/ntsb/MIA84LA186

## Sequence of events

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

- Airframe/component/system failure/malfunction, unknown
  - engine assembly,crankshaft - cracked (cause)
  - fluid,oil - leak (cause)
  - fluid,oil - starvation (cause)
  - propeller system/accessories,hydraulic pitch ctl - inoperative
- Forced landing, descent - emergency
- On ground/water collision with object, landing - roll
  - object - tree(s) (contributing factor)

## Analysis

DURING A CROP DUSTING OPERATION, THERE WAS AN APPARENT LOSS OF POWER & OIL SPRAYED ON THE WINDSHIELD OF THE ACFT. THE PLT STATED THAT WHEN HE APPLIED POWER, THERE WAS NO RESPONSE. HE MADE A FORCED LANDING ON A ROAD, BUT THE RIGHT WING OF THE ACFT HIT A TREE. AN EXAM OF THE ENG REVEALED THAT THE CRANKSHAFT WAS CRACKED AT THE PROPELLER FLANGE & THAT OIL WAS SEEPING FROM THE CRACK.

## Aircraft

- Registration: [N5630G](https://openairdocs.org/deregistered/N5630G-1989-07-25), registration cancelled 1989-07-25, S/N 18801120T (OpenAirDocs)
- Reported make and model: CESSNA A188B
- Registry model: [Cessna A188B](https://openairdocs.org/model/cessna-a188b) (registry code 2073005) (OpenAirDocs)
- Category: Airplane
- Serial number: 18801120T
- Engines: CONTINENTAL IO-520-D 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: S & S Air Services, Inc.
- Airworthiness certificate: Special, Restricted (Special)
- Departed: MAI, MARIANNA, FL

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 2,500 total

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 79 °F

## 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 19840618025059A](https://openairdocs.org/incident/19840618025059A), Jun 18, 1984: Cessna A188B, Marianna, FL, Substantial damage. Engine quit during a spray run collided with trees. Crankshaft broke at prop flange allowed engine oil to escape.

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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