# NTSB MIA91LA044: Beech F33A, N81562, Lakeland, FL, December 15, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: December 15, 1990, 07:44 local (12:44 UTC)
- Place: Lakeland, FL
- Coordinates: 28.009235, -81.929191 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=28.0092&lon=-81.9292&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report March 12, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 32804
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA91LA044
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/32804/pdf
- Page: https://openairdocs.org/ntsb/MIA91LA044

## Probable cause

TOTAL LOSS OF ENGINE POWER DUE TO OIL EXHAUSTION FOR UNDETERMINED REASONS. THIS CAUSED THE PISTONS TO SEIZE IN THE CYLINDERS.

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, climb - to cruise
  - fluid,oil - exhaustion (cause)
  - engine assembly,piston - seized (cause)
- Forced landing, descent - emergency
- On ground/water collision with object, landing - roll
  - object - tree(s)

## Analysis

BEFORE DEPARTURE, THE PLT PREFLIGHTED THE ACFT & PERFORMED AN ENG RUN-UP WITH NO DISCREPANCIES NOTED. AFTER DEPARTURE WHILE CLIMBING THROUGH 5,500 FT, THE ENG QUIT. THE PLT RESTARTED THE ENG BUT OBSERVED THE OIL PRESSURE WAS ZERO. THE ENG QUIT AGAIN & HE WAS UNABLE TO RESTART IT. DURING THE FORCED LANDING IN A FIELD, THE ACFT COLLIDED WITH A TREE. EXAM OF THE ACFT REVEALED OIL COATING THE BOTTOM OF THE FUSELAGE. THE ENG COMPARTMENT WAS NOT CONTAMINATED. THE ENG WAS REMOVED & EXAM OF IT REVEALED THAT THE NO'S 1,2,5, & 6 PISTONS SCORED THE CYLINDER WALLS. NO'S 3 & 4 PISTONS WERE NORMAL. DUE TO THE DAMAGE, NO DIMENSIONAL ANALYSIS OF THE FAILED PISTONS & CYLINDERS COULD BE MADE. THE ENG DRIVEN OIL PUMP WAS EXAM & FOUND TO BE FREE OF FAILURE OR MALFUNCTION. NO DETERMINATION COULD BE MADE AS TO THE REASONS FOR THE LOSS OF ENG OIL RESULTING IN THE TOTAL LOSS OF ENG POWER DUE TO SEIZURE OF THE NO'S 1,2,5, & 6 PISTONS IN THE CYLINDERS. THE ACFT & ENG HAD ACCUMULATED 16.1 HRS SINCE MANUFACTURE.

## Aircraft

- Registration: N81562 (not matched to a registry record)
- Reported make and model: BEECH F33A
- Category: Airplane
- Serial number: CE-1535
- Airframe hours: 16
- Engines: CONTINENTAL IO-520-BB 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Ferry, Part 91
- Operator: Globe Aero Ltd.
- Registered owner: Euroflight, Inc
- Destination: BGR, BANGOR, ME
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 43; flight instructor, airline transport, commercial; airplane ratings: multi-engine land, single-engine land, single-engine sea; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; flight hours: 14,600 total, 200 in this make and model, 12,300 as pilot in command, 200 in the last 90 days, 60 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 315° at 5 knots
- Visibility: 6 statute miles
- Lowest ceiling: none
- Temperature: 61 °F
- Altimeter: 30.00 inHg

## 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 19901215054279A](https://openairdocs.org/incident/19901215054279A), Dec 15, 1990: Beech F33A, Lakeland, FL, Substantial damage. Lost oil pressure on climb to cruise. Struck tree on forced landing. Oil filter housing broke. Oil bottom aircraft.

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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