# NTSB MIA93LA086: Cessna 180K, N66388, Madison, MS, March 19, 1993

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: March 18, 1993, 19:34 local (Mar 19, 1993, 01:34 UTC)
- Place: Madison, MS
- Coordinates: 32.449794, -90.099639 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=32.4498&lon=-90.0996&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report February 10, 1994
- Report: Approved by Office Director
- NTSB case key (mKey): 33241
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA93LA086
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33241/pdf
- Page: https://openairdocs.org/ntsb/MIA93LA086

## Probable cause

INDUCTION AIR CONTROL/SYSTEM PARTIAL FAILURE, INDUCTION AIR CONTROL/SYSTEM LEAK, AND THE LACK OF SUITABLE TERRAIN FOR THE FORCED LANDING.

## 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, cruise
  - induction air control/system - failure,partial (cause)
  - induction air control/system - leak (cause)
  - engine assembly - overtemperature
- Forced landing, descent - emergency
- In flight collision with object, descent - emergency
  - object - tree(s)
  - terrain condition - none suitable (cause)

## Analysis

THE PILOT REPORTED THAT AFTER LEVELING OFF AT 2,300 FEET NEAR THE DESTINATION AIRPORT, THE ENGINE QUIT. ATTEMPTS BY THE PILOT TO RESTART THE ENGINE WERE UNSUCCESSFUL.  DURING THE EMERGENCY DESCENT FOR THE FORCED LANDING OVER A WOODED AREA, THE AIRPLANE COLLIDED WITH TREES THEN THE GROUND.  EXAMINATION OF THE ENGINE BY AN FAA CERTIFICATED MECHANIC REVEALED THAT A SECTION OF THE INTAKE GASKET AT THE NO. 3 CYLINDER ASSEMBLY WAS MISSING.  THIS RESULTED IN UNMETERED AIR ENTERING THE CYLINDER RESULTING IN A LEAN FUEL/AIR MIXTURE.  THE NO. 3 CYLINDER WAS REMOVED AND THE TOP COMPRESSION RING AND OIL CONTROL RING IN THE PISTON LAND COULD NOT BE MOVED.  ADDITIONALLY, THE TOP OF THE PISTON AND CYLINDER CORROBORATED THE LEAN MIXTURE.  THE PLT REPORTED THAT SEVERAL MONTHS EARLIER, THE CYLINDER HEAD TEMPERATURE (CHT) WAS HIGH BUT IT WAS DETERMINED THAT THE CHT PROBE WAS BROKEN.  THE CHT PROBE IS INSTALLED ON THE NO. 3 CYLINDER.  REVIEW OF THE ENGINE LOGBOOK REVEALED THAT ON DECEMBER 5, 1991, THE INTAKE GASKETS WERE REPLACED.

## Aircraft

- Registration: N66388 (not matched to a registry record)
- Reported make and model: CESSNA 180K
- Category: Airplane
- Serial number: 18052937
- Airframe hours: 4620
- Engines: CONTINENTAL O-470U 230 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Dixie Bowl Lanes, Inc.
- Registered owner: Dixie Bowl Lanes, Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, January 1, 1993, 105 hours before
- Departed: DFW, DALLAS, TX
- Flight plan: IFR
- Airport: MBO, Bruce Campbell Field

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 42; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 6,150 total, 4,500 in this make and model, 6,100 as pilot in command, 100 in the last 90 days, 40 in the last 30 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 50° at 4 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 46 °F, dew point 39 °F
- Altimeter: 30.00 inHg
- Observed at: JAN, 10 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 19930318007489A](https://openairdocs.org/incident/19930318007489A), Mar 18, 1993: Cessna 180K, Madison, MS, Substantial damage. Engine quit on letdown to land. Crashed landed in trees. Fell to ground. Cylinder intake gasket missing.

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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