# NTSB MIA88LA030: Cessna T-210N, N4612C, Tallahassee, FL, November 10, 1987

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: November 9, 1987, 20:46 local (Nov 10, 1987, 01:46 UTC)
- Place: Tallahassee, FL
- Location: 30.3968° N, 84.3509° W: Placed by OpenAirDocs at TALLAHASSEE INTL (TLH), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=30.3968&lon=-84.3509&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 14, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 32085
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA88LA030
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/32085/pdf
- Page: https://openairdocs.org/ntsb/MIA88LA030

## Sequence of events

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

- Airframe/component/system failure/malfunction, descent - normal
  - landing gear,gear locking mechanism - leak (cause)
  - maintenance,major repair - improper, company maintenance personnel (cause)
  - fluid,hydraulic - exhaustion (cause)
  - landing gear,normal retraction/extension assembly - disabled
- Gear not extended, landing - flare/touchdown
  - landing gear,emergency extension assembly - disconnected (cause)
  - gear extension - not possible

## Analysis

DURING LDG GEAR EXTENSION PLT DID NOT GET SAFE DOWN INDICATION. ATTEMPTS TO USE EMERGENCY EXTENSION PUMP WERE UNSUCCESSFUL. ACFT WAS LANDED NOSE GEAR EXTENDED MAIN GEAR RETRACTED. POST ACCIDENT INSPECTION OF THE ACFT REVEALED THE LEFT MAIN GEAR DOWN LOCK ACTUATOR TO HAVE A RAPID LEAK DUE TO A TORN O RING. THE EMERGENCY HAND PUMP HANDLE WAS FOUND WITH THE PISTON CONNECTING PIN INSTALLED BUT THE PIN WAS NOT INSTALLED IN THE PISTON. THE ACFT WAS DAMAGED 43 HOURS BEFORE THIS ACCIDENT WHEN IT WAS LANDED IN A SWAMP AFTER AN ENGINE FAILURE.

## Aircraft

- Registration: [N4612C](https://openairdocs.org/deregistered/N4612C-2003-06-16), registration cancelled 2003-06-16, S/N 21063574, built 1979 (OpenAirDocs)
- Reported make and model: CESSNA T-210N
- Registry model: [Cessna T210N](https://openairdocs.org/model/cessna-t210n) (registry code 2073456) (OpenAirDocs)
- Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 21063574
- Airframe hours: 2173
- Engines: CONTINENTAL TSIO-520-R 310 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Registered owner: Topp Of Tampa Airport, Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, October 20, 1987, 43 hours before
- Departed: PFN, PANAMA CITY, FL
- Flight plan: IFR
- Airport: TLH, Tallahassee Municipal, runway 18, 6,070 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 44; airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 2,971 total, 1,665 in this make and model, 2,826 as pilot in command, 417 in the last 90 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 90° at 5 knots
- Visibility: 7 statute miles
- Lowest ceiling: 10,000 ft overcast
- Temperature: 68 °F, dew point 64 °F
- Altimeter: 29.00 inHg
- Observed at: TLH

## 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 19871109067409A](https://openairdocs.org/incident/19871109067409A), Nov 9, 1987: Cessna T210N, Tallahassee, FL, Substantial damage. Unable to extend gear. Landed with mains up. Actuator o ring cut. Leaked all fluid. Hand gear pump pin not secured.

## Other investigations on N4612C (1)

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 MIA87LA154](https://openairdocs.org/ntsb/MIA87LA154), May 2, 1987: Cessna T210N (N4612C), Apalachicola, FL, substantial 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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