# NTSB FTW89LA135: Cessna 421, N699PC, Okmulgee, OK, July 13, 1989

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: July 13, 1989, 11:15 local (16:15 UTC)
- Place: Okmulgee, OK
- Location: 35.6681° N, 95.9485° W: Placed by OpenAirDocs at OKMULGEE RGNL/PAUL AND BETTY ABBOTT FLD (OKM), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.6681&lon=-95.9485&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report September 30, 1991
- Report: Approved by Office Director
- NTSB case key (mKey): 22896
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW89LA135
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/22896/pdf
- Page: https://openairdocs.org/ntsb/FTW89LA135

## Probable cause

FAILURE OF THE NOSE GEAR EXTENSION ASSEMBLY AND THE PILOT'S IMPROPER PRECAUTIONARY LANDING PROCEDURES THAT INCLUDED SECURING THE ENGINES PRIOR TO A POINT WHERE A SAFE LANDING WAS ASSURED.

## Sequence of events

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

- Airframe/component/system failure/malfunction, takeoff - initial climb
  - landing gear,nose gear assembly - failure,total (cause)
  - gear extension - not possible, pilot in command
- In flight collision with terrain/water, landing - flare/touchdown
  - powerplant - switched off
  - precautionary landing - improper, pilot in command (cause)
  - terrain condition - rough/uneven

## Aircraft

- Registration: [N699PC](https://openairdocs.org/deregistered/N699PC-1991-03-13), registration cancelled 1991-03-13, S/N 4210150 (OpenAirDocs)
- Reported make and model: CESSNA 421
- Registry model: [Cessna 421](https://openairdocs.org/model/cessna-421) (registry code 2076010) (OpenAirDocs)
- Category: Airplane
- Serial number: 421-150
- Airframe hours: 4322
- Engines: CONTINENTAL GTSIO-520-D 375 horsepower reciprocating
- Damage: Substantial damage
- Flight: Other work use, Part 91
- Registered owner: Red Wing Products, Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, June 22, 1989, 30 hours before
- Departed: 0F8, SAND SPRINGS, OK
- Airport: OKM, Okmulgee Mun.

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 47; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, unknown; seat: left; flight hours: 5,470 total, 894 in this make and model, 5,301 as pilot in command

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 3 statute miles
- Lowest ceiling: 2,000 ft broken
- Temperature: 84 °F
- Altimeter: 29.00 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 19890713022279A](https://openairdocs.org/incident/19890713022279A), Jul 13, 1989: Cessna 421, Okmulgee, OK, Substantial damage. Unable to lock down nose gear. Secured both engines too soon on gear up landing. Landed short. Retract rod failed.

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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