# NTSB ATL84LA230: Cessna A188B, N731GV, Georgetown, MS, July 21, 1984

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: July 21, 1984, 09:00 local (14:00 UTC)
- Place: Georgetown, MS
- Coordinates: 31.859743, -90.160308 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=31.8597&lon=-90.1603&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 6502
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL84LA230
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/6502/pdf
- Page: https://openairdocs.org/ntsb/ATL84LA230

## 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,bearing - failure,total (cause)
  - lubricating system - blocked(partial)
  - fluid,oil - starvation (cause)
  - engine assembly,connecting rod - overtemperature
  - engine assembly,connecting rod - failure,total
- Forced landing, descent - emergency
  - load jettison - delayed, pilot in command (contributing factor)
- In flight collision with object, maneuvering - turn to landing area (emergency)
  - object - tree(s) (contributing factor)

## Analysis

THE PLT REPORTED THAT DURING A PULL-UP, THE PROP WENT TO A LOW PITCH ANGLE & THE ENG WAS NOT DEVELOPING FULL POWER. HE NOTED THAT THE TACHOMETER WAS NEAR THE RED LINE & HE RETARDED THE PROP PITCH CONTROL & THE THROTTLE. ALSO, HE NOTED THAT THE OIL PRESSURE GAGE INDICATED NORMAL. THE PLT THOUGHT HE HAD ENOUGH POWER TO FLY TO THE EDGE OF THE FIELD TO DUMP HIS LOAD IN ORDER TO MINIMIZE THE CROP DAMAGE. HOWEVER, HE REPORTED THERE WAS INSUFFICIENT POWER TO CLEAR TREES. SUBSEQUENTLY, A FORCED LANDING WAS MADE IN THE TREES & THE ACFT WAS DAMAGED. AN EXAM REVEALED THAT THE #6 CONNECTING ROD HAD FAILED ABOUT 1 INCH FROM THE ROD CAP. THERE WAS EVIDENCE OF LOCALIZED OVERHEATING. THE #6 ROD RECEIVED SPLASH & SPRAY OIL FROM AN OIL PORT IN THE MAIN JOURNAL. THE MAIN JOURNAL BEARING APPEARED TO HAVE SPUN & CLOSED OFF THE OIL PORT, REDUCING COOLING OIL TO THE #6 ROD. THE PROP GOVERNOR RECEIVED OIL FROM THE SAME PORT. OBSTRUCTION OF OIL TO THE GOVERNOR WOULD ALLOW THE PROP TO DRIVE TO A LOW PITCH/HI RPM POSITION.

## Aircraft

- Registration: [N731GV](https://openairdocs.org/deregistered/N731GV-2013-05-07), registration cancelled 2013-05-07, S/N 18802893T, built 1977 (OpenAirDocs)
- Reported make and model: CESSNA A188B
- Registry model: [Cessna A188B](https://openairdocs.org/model/cessna-a188b) (registry code 2073005) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 18802893T
- Airframe hours: 3165
- Engines: CONTINENTAL IO-520-D 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Cecil H. Payne
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: 100 hour, March 1, 1984

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 59; commercial, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 8,000 total, 4,000 in this make and model, 8 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 84 °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 19840721037199A](https://openairdocs.org/incident/19840721037199A), Jul 21, 1984: Cessna A188B, Georgetown, MS, Substantial damage. Prop went to low pitch and engine began to fail on pullup from a spray run. Hit trees. Engine had thrown a rod.

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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