# NTSB BFO91LA046: Cessna 310D, N6632T, Christiansburg, VA, May 1, 1991

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: May 1, 1991, 12:40 local (16:40 UTC)
- Place: Christiansburg, VA
- Coordinates: 37.140697, -80.400871 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.1407&lon=-80.4009&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report April 8, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 11675
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=BFO91LA046
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/11675/pdf
- Page: https://openairdocs.org/ntsb/BFO91LA046

## Probable cause

INADEQUATE MAINTENANCE. CONTRIBUTING WAS AN OBSTRUCTED AIR FILTER.

## Sequence of events

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

- Loss of engine power, cruise
  - induction air control,air filter/screen - blocked(partial) (cause)
  - maintenance - inadequate (cause)
  - ram/induction air - blocked(partial) (cause)
- Forced landing, descent - emergency
- On ground/water collision with object, landing
  - object - vehicle (contributing factor)

## Analysis

THE ACFT WAS ON ITS FIRST FLIGHT IN ABOUT 2 YEARS WHEN THE ACCIDENT OCCURRED.  THE ACFT WAS BEING FLOWN TO THE DESTINATION WHERE IT WAS TO BE USED FOR SALVAGE.  ACCORDING TO THE PILOT,  WHILE EN ROUTE, THE RIGHT ENGINE BEGAN RUNNING ROUGH BEFORE IT LOST TOTAL POWER.  THE PLT SAID HE WAS UNABLE TO MAINTAIN ALTITUDE ON THE OTHER ENGINE, SO HE DID A FORCED LANDING ON A HIGHWAY WHERE THE ACFT STRUCK A TRUCK. THE EXAMINATION OF THE ENGINE REVEALED THE RIGHT ENGINE AIR FILTER WAS OBSTRUCTED.

## Aircraft

- Registration: N6632T (not matched to a registry record)
- Reported make and model: CESSNA 310D
- Category: Airplane
- Serial number: 39032
- Engines: CONTINENTAL IO-470D 240 horsepower reciprocating
- Damage: Substantial damage
- Flight: Ferry, Part 91
- Operator: U.S. Air Salvage
- Airworthiness certificate: Standard, Normal
- Last inspection: Unknown, January 2, 2000
- Departed: N70, PERKASIE, PA
- Destination: OA6, JOHNSON CITY, TN

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 26; private; airplane ratings: single-engine land; medical: class 3, unknown; seat: left; toxicology performed; flight hours: 2,000 total, 50 in this make and model, 1,800 as pilot in command

## Weather

- Conditions: Visual (VMC), Day
- Wind: 160° at 9 knots
- Visibility: 35 statute miles
- Temperature: 75 °F, dew point 55 °F
- Altimeter: 29.00 inHg
- Observed at: ROA, 22 nm away

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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