Beechcraft 390 N20NL

Summary

On 23 December 2008 at about 21:00 local time, a Beechcraft 390 registered N20NL, operated by CNS Corporation, was involved in an accident near Lewistown, Missouri, United States. 4 people were on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

23 December 2008 at 21:00

Classification

Accident

Location

Lewistown, Missouri, United States

Nearest airport

Sparpe Farms Airport (MO09)

Coordinates

40.1093, -91.9106

Aircraft

Beechcraft 390

Registration

N20NL

Category

Airplane

Engines

2

Operator

CNS Corporation

Operating rule

Part 91: General Aviation

Purpose of flight

Executive/Corporate

Phase of flight

Not recorded

Route

KC Downtown → Lewistown

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

CEN09LA100

Nobody was injured.

The pilot's loss of directional control during landing on an ice-contaminated runway.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

Prior to departure, the pilot was informed that it had been raining; the roads were wet, but no mention of ice at his destination. During the approach to the destination airport, the runway appeared "wet", and a normal approach and landing was attempted. The airplane touched down at 110 knots, the pilot "then deployed lift dump and [then applied the] brakes". Unable to get braking action, the pilot tried to slide the airplane "left and right" to get traction, but could not. The airplane departed the south end of the 4,370-foot-long runway, went over the edge of an embankment and stopped next to a levee. There were no reported pre-impact malfunctions with the airplane. The Manufacturer Approved Airplane Flight Manual Supplement for Airplanes Operating on Wet and Contaminated Runways; General Information Section, states operations on runways contaminated with ice or wet ice are not recommended and no operational information is provided. Using the supplement, the anticipated landing distance on a wet runway was calculated to be about 3,400 feet, the anticipated landing distance on an uncontaminated runway was calculated to be approximately 2,800 feet, and the prescribed landing speed (Vref) was determined to be about 111 knots. A braking action (runway condition) report for the private airfield's runway did not exist, nor was one required.

Quoted verbatim from the NTSB record.