# NTSB MIA90LA052: Cessna 210M, N9064M, Ocala, FL, January 12, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: January 12, 1990, 08:15 local (13:15 UTC)
- Place: Ocala, FL
- Location: 29.1872° N, 82.1401° W: Placed by OpenAirDocs: center of Ocala, FL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=29.1872&lon=-82.1401&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 5, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 32613
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA90LA052
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/32613/pdf
- Page: https://openairdocs.org/ntsb/MIA90LA052

## Probable cause

SEPARATION OF THE THROTTLE PLATE, DUE TO IMPROPER SECURING OF THE ATTACH SCREWS DURING AN OVERHAUL.

## Sequence of events

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

- Loss of engine power(partial) - mech failure/malf, descent - normal
  - fuel injection control/system - failure,partial (cause)
  - maintenance,overhaul - improper, other maintenance personnel (cause)
- Forced landing, descent - emergency
- On ground/water collision with object, landing - roll
  - object - fence
  - object - tree(s)

## Analysis

DURING A DESCENT, THE PLT PULLED THE THROTTLE TO REDUCE POWER WITH NEGATIVE RESULTS. HE AGAIN PULLED THE THROTTLE TO REDUCE POWER & THE MANIFOLD PRESSURE GAUGE INDICATED THAT THE ENG POWER DROPPED TO IDLE. HE ATTEMPTED TO PUSH THE THROTTLE, BUT WAS UNABLE. HE THEN MADE A FORCED LANDING. DURING THE LANDING ROLL, THE ACFT WAS DAMAGED WHEN IT COLLIDED WITH A FENCE & A TREE. AN EXAM OF THE FUEL SERVO REVEALED THAT THE THROTTLE PLATE HAD SEPARATED FROM THE THROTTLE SHAFT DUE TO IMPROPER SECURING OF THE ATTACH SCREWS DURING OVERHAUL. THIS RESULTED IN THE LOSS OF POWER DUE TO RESTRICTED AIRFLOW INTO THE INDUCTION SYSTEM.

## Aircraft

- Registration: [N9064M](https://openairdocs.org/deregistered/N9064M-1994-10-13), registration cancelled 1994-10-13, S/N 21062057 (OpenAirDocs)
- Reported make and model: CESSNA 210M
- Registry model: [Cessna 210M](https://openairdocs.org/model/cessna-210m) (registry code 2073450) (OpenAirDocs)
- Category: Airplane
- Serial number: 21062057
- Airframe hours: 4506
- Engines: CONTINENTAL IO-520-L 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Operator: Cherokee Express
- Registered owner: Cherokee Leasing, Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: Continuous airworthiness, January 11, 1990, 2 hours before
- Departed: ORL, ORALNDO, FL
- Destination: 40J, PERRY, FL
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 29; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 2,056 total, 890 in this make and model, 1,903 as pilot in command, 300 in the last 90 days, 100 in the last 30 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 300° at 10 knots
- Visibility: 5 statute miles
- Lowest ceiling: none
- Altimeter: 30.00 inHg
- Observed at: GNV, 30 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 19900112000459A](https://openairdocs.org/incident/19900112000459A), Jan 12, 1990: Cessna 210M, Ocala, FL, Substantial damage. Unable to control engine throttle. Collided with fence on forced landing,throttle plate separated cut induction air

## Other investigations on N9064M (2)

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.

- [NTSB MIA92LA036](https://openairdocs.org/ntsb/MIA92LA036), Nov 30, 1991: Cessna 210M (N9064M), Zephyrhills, FL, substantial damage. Probable cause: IMPROPER PLACEMENT OF THE FUEL SELECTOR BY THE PILOT-IN-COMMAND RESULTING IN THE TOTAL LOSS OF ENGINE POWER DUE TO FUEL STARVATION. CONTRIBUTING TO THE ACCIDENT WAS AN INCORRECT FUEL QUANTITY GAGE,…
- [NTSB MIA89IA008](https://openairdocs.org/ntsb/MIA89IA008), Oct 11, 1988: Cessna 210M (N9064M), Orlando, FL, incident, minor damage

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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