Learjet 60 N240FX

Summary

On 12 March 2000 at about 15:40 local time, a Learjet 60 registered N240FX was involved in an accident near Jackson, Wyoming, United States. 2 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

12 March 2000 at 15:40

Classification

Accident

Location

Jackson, Wyoming, United States

Nearest airport

Jackson Hole Airport (JAC)

Coordinates

43.4701, -110.7603

Aircraft

Learjet 60

Registration

N240FX

Category

Airplane

Engines

2

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Executive/Corporate

Phase of flight

Not recorded

Route

Provo → Unknown

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

DEN00LA057

Nobody was injured.

The pilot not following the airplane manufacturer's recommended landing procedures for a contaminated runway by landing with a tailwind. Factors were the pilot's inadvertent deactivation of the anti-skid protection, the ice contaminated runway, and the snow covered terrain beyond the runway.

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

Read the full NTSB narrative

The airplane departed Provo, Utah, with its thrust reversers mechanically pinned in forward thrust. The ILS approach to runway 18 (6,299 x 150 feet, contaminated with ice, and -.611% gradient) at Jackson Hole Airport was performed with a 6.5 knot tailwind. During the landing roll, the captain used the emergency braking system, which deactivated the anti-skid protection. At mid-field, the airplane slid left, then slid right, and then left back to the runway centerline where the captain said he continued braking. The airplane continued beyond the end of the runway for 160 feet into snow approximately 2 feet deep. The manufacturer's Airplane Flight Manual indicates that when emergency braking is utilized, the anti-skid protection is deactivated. The CVR recorded a 'high pitch' sound at 0839:44, which was the high-pressure air of the emergency braking system being activated. The Airplane Flight Manual also limits landing on contaminated runways to the following: A. Winds must be zero or a headwind of less than 30 knots (i.e. no tailwind); B. The runway gradient must be between -1% and +2.2%; and C. The anti-skid system must be operational.

Quoted verbatim from the NTSB record.