# NTSB FTW92FA029: Cessna 402B, N69CR, Roanoke, TX, November 29, 1991

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Field investigation · Final report
- Date: November 29, 1991, 17:20 local (23:20 UTC)
- Place: Roanoke, TX
- Coordinates: 33.000663, -97.229972 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=33.0007&lon=-97.2300&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 2 serious
- Status: Completed, report May 26, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 18344
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW92FA029
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/18344/pdf
- Page: https://openairdocs.org/ntsb/FTW92FA029

## Probable cause

THE OPERATION OF THE AIRPLANE WITH KNOWN DEFICIENCIES, A MISSING AIR COOLING BAFFLE, AND INADEQUATE MAINTENANCE. FACTORS WERE THE FROZEN PROPELLER, INABILITY OF THE PILOT TO FEATHER THE PROPELLER, INOPERATIVE LANDING GEAR, THE INABILITY OF THE PILOT TO RETRACT THE LANDING GEAR, AND THE LACK OF SEAT BELTS.

## 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 - normal
  - preflight planning/preparation - not performed, pilot in command
  - operation with known deficiencies in equipment - performed, pilot in command (cause)
  - cooling system,baffle - missing (cause)
  - maintenance - inadequate, flight engineer (cause)
  - propeller system/accessories - frozen (contributing factor)
  - propeller feathering - not possible, pilot in command (contributing factor)
  - landing gear,main gear - inoperative (contributing factor)
  - gear retraction - not possible, pilot in command (contributing factor)
- Forced landing, descent - emergency
  - misc eqpt/furnishings,seat belt - not installed
  - seat belt - not possible, pilot in command (contributing factor)
  - seat belt - not possible, passenger (contributing factor)
- In flight collision with terrain/water, descent - emergency

## Analysis

DURING DAYLIGHT FLIGHT, THE AIRPLANE LOST ITS RIGHT ENGINE DUE TO  FAILED PISTON ASSEMBLY BECAUSE OF ENGINE OVERHEATING. THE OVERHEATING WAS DUE TO THE ENGINE AIR COOLING BAFFLE NOT BEING INSTALLED AND THE IMPROPER OIL FILTER BEING INSTALLED. THE AIRPLANE WOULD NOT SUSTAIN FLIGHT DUE TO THE INOPERATIVE MAIN LANDING GEAR WHICH WAS LOCKED IN THE DOWN POSITION AND THE PROPELLER THAT COULD NOT FEATHER DUE TO CORROSION. THE PILOT AND HIS PASSENGER WERE SERIOUSLY INJURED IN THE LANDING DUE TO THE LACK OF SEAT BELTS. THE AIRPLANE WAS OPERATED WITH 137 KNOWN DEFICIENCIES.

## Aircraft

- Registration: [N69CR](https://openairdocs.org/deregistered/N69CR-2013-02-14), registration cancelled 2013-02-14, S/N 402B0521, built 1973 (OpenAirDocs)
- Reported make and model: CESSNA 402B
- Registry model: [Cessna 402B](https://openairdocs.org/model/cessna-402b) (registry code 207590P) (OpenAirDocs)
- Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 402B0521
- Airframe hours: 3077
- Engines: CONTINENTAL TSIO-520-E 300 horsepower reciprocating
- Damage: Destroyed
- Flight: Other work use, Part 91
- Operator: Jerry Miller
- Registered owner: Jerry Miller
- Airworthiness certificate: Standard, Normal
- Departed: ADS, ADDISON, TX

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 34; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 4,500 total

## Weather

- Conditions: Visual (VMC), Day
- Wind: 240° at 12 knots
- Visibility: 20 statute miles
- Lowest ceiling: 5,500 ft broken
- Temperature: 73 °F, dew point 57 °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 19911129053769A](https://openairdocs.org/incident/19911129053769A), Nov 29, 1991: Cessna 402B, Roanoke, TX, Destroyed. Right engine seized en route due to oil starvation. Engines and props not airworthy. Landing gear was inoperative.

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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