# NTSB MIA92LA169: Cessna 425, N425TV, Greenwood, MS, August 30, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 30, 1992, 15:02 local (20:02 UTC)
- Place: Greenwood, MS
- Location: 33.5078° N, 90.0870° W: Placed by OpenAirDocs from NTSB’s distance and direction from GREENWOOD-LEFLORE (GWO), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.5078&lon=-90.0870&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 6 uninjured
- Status: Completed, report September 14, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 33125
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA92LA169
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33125/pdf
- Page: https://openairdocs.org/ntsb/MIA92LA169

## Probable cause

FAILURE OF THE PILOT-IN-COMMAND TO MAINTAIN HIS DESCENT RATE RESULTING IN AN UNDERSHOOT. CONTRIBUTING TO THE ACCIDENT WAS THE CHIP DETECTOR FAILURE DUE TO IMPROPER QUALITY CONTROL BY THE MANUFACTURER.

## 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, cruise
  - 1 engine
  - lubricating system,oil magnetic plug - failure,total (contributing factor)
  - inadequate quality control, manufacturer (contributing factor)
- Undershoot, approach - vfr pattern - final approach
  - proper descent rate - not maintained, pilot in command (cause)

## Analysis

THE CORPORATE FLIGHT WAS IN CRUISE AT FLIGHT LEVEL 200 WHEN THE PILOT SHUT DOWN THE NO. 1 ENGINE AND FEATHERED THE PROPELLER DUE TO FLUCTUATING OIL PRESSURE. THE PILOT DECLARED AN EMERGENCY AND WAS EXECUTING A SINGLE ENGINE APPROACH WHEN HE NOTED HIS SINK RATE WAS HIGH SO HE RETRACTED THE GEAR AND FLAPS AND THE AIRPLANE CRASHED SHORT OF THE RUNWAY. AFTER THE ACCIDENT THE CHIP DETECTOR ON THE NO. 1 ENGINE WAS FOUND BROKEN, DUE TO THE METAL BEING TOO BRITTLE, BECAUSE OF AN IMPROPER MANUFACTURING PROCESS.

## Aircraft

- Registration: [N425TV](https://openairdocs.org/aircraft/N425TV), registered now, S/N 425-0176 (OpenAirDocs)
- Reported make and model: CESSNA 425
- Registry model: [Cessna 425](https://openairdocs.org/model/cessna-425) (registry code 2076018) (OpenAirDocs)
- Registry engine: [Pratt & Whitney PT6A series](https://openairdocs.org/engine/pratt-whitney-pt6a-series) (registry code 52032, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Serial number: 425 0176
- Airframe hours: 3483
- Engines: P&W PT-6A-112 450 horsepower turbo prop
- Damage: Substantial damage
- Flight: Executive/Corporate, Part 91
- Operator: Daymark Foods Inc.
- Registered owner: Hilltop Foods Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: AAIP, March 24, 1992, 77 hours before
- Departed: FTY, ATLANTA, GA
- Destination: F54, ARLINGTON, TX
- Flight plan: IFR
- Airport: GWO, Greenwood Leflore, runway 18, 5,005 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 41; airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 3,719 total, 18 in this make and model, 148 in the last 90 days, 56 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 300° at 5 knots
- Visibility: 7 statute miles
- Lowest ceiling: 25,000 ft broken
- Temperature: 84 °F, dew point 63 °F
- Altimeter: 30.00 inHg
- Observed at: GWO, 1 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 19920830034009A](https://openairdocs.org/incident/19920830034009A), Aug 30, 1992: Cessna 425, Greenwood, MS, Substantial damage. Lost oil pressure left engine. Secured diverted to gwo. Distabilized approach. Landed short. Chip detector leaked.

## Other investigations on N425TV (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 LAX97LA125](https://openairdocs.org/ntsb/LAX97LA125), Mar 17, 1997: Cessna 425 (N425TV), Fresno, CA, substantial damage. Probable cause: failure of the right brake to function, due to the installation mechanic's failure to completely bleed all air from the lines. A factor in the accident was the pilot's decision to fly the unairworthy…

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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