This space for binding

National Transportation Safety Board NTSB ID: DEN00LA057 Aircraft Registration Number: N240FX

FACTUAL REPORT Occurrence Date: 03/12/2000 Most Critical Injury: None

AVIATION Occurrence Type: Accident Investigated By: NTSB

Location/Time
Nearest City/Place State Zip Code Local Time Time Zone
JACKSON WY 83001 0840 MST

Airport Proximity: On Airport/Airstrip Distance From Landing Facility:

Aircraft Information Summary

Aircraft Manufacturer Model/Series Type of Aircraft

Learjet 60 /60 Airplane

Revenue Sightseeing Flight: No Air Medical Transport Flight: No

Narrative
Brief narrative statement of facts, conditions and circumstances pertinent to the accident/incident:
On March 12, 2000, approximately 0840 mountain standard time, a Learjet 60, N240FX, was
substantially damaged when it overran runway 18 during landing roll at Jackson Hole Airport,
Jackson, Wyoming. The airline transport pilot and the airline transport copilot were not injured.
The airplane was owned by Bombardier Aerospace Corp., of Dallas, Texas, and was being operated by
FlexJet, also of Dallas, Texas, under Title 14 CFR Part 91. Visual meteorological conditions
prevailed at the time of the accident. The cross-country repositioning flight originated from
Provo, Utah, approximately 43 minutes before the accident. An IFR flight plan had been filed.

The pilots had spent the night in Provo, Utah, and they received this assignment on the morning of
the accident. The captain said that they departed Provo with the airplane's thrust reversers
mechanically pinned to the forward thrust position due to a maintenance discrepancy. As they
approached Jackson, the airplane's cockpit voice recorder (CVR) documented that they planned to fly
an Instrument Landing System (ILS) approach to runway 18 (6,299 x 150 feet, and -.611% gradient).
The Automatic Weather Observation System (AWOS) recorded that the cloud ceiling was 1,200 feet
above the ground and the wind was 030 degrees at 9 knots. Approximately 90 seconds before
touchdown, the CVR recorded the AWOS wind as, 010 degrees at 7 knots (6.5 knot tailwind).

The airport manager said that snow had fallen the night before the accident. He said that airport
ground crews had plowed the runway and broomed it. The runway condition report prepared at 0516
indicated thin ice on the runway, and braking action was fair.

The captain said that he was told that the braking action on the runway was fair. He flew the
final approach at "Vref plus a couple of knots, continued the approach and made a normal touchdown
approximately 800 to 1,000 feet down the runway." He said that he applied brakes approximately 500
to 800 feet after touchdown, and "noticed very little deceleration." The captain reported, on the
National Transportation Safety Board's Pilot/Operator Aircraft Accident Report, that he used
maximum braking effort to stop the airplane. The pilot reported to a FlexJet official, immediately
after the accident, that he had used "emergency braking," because of the apparent lack of aircraft
deceleration. Later, when interviewed by the NTSB Investigator-In-Charge, he could not remember if
he had used emergency braking.

According to the captain, at approximately runway midfield, the airplane began to slide left, then
right, and then left back to centerline where "maximum braking continued." He said that they
departed the end of the runway at approximately 40 knots, and continued forward (in an estimated 2
feet of snow) for approximately 160 feet. Subsequently, the nose landing gear separated and
penetrated the airplane's pressure vessel.

A manufacturer's representative said that if the emergency braking system were used, a very loud
high pitched sound would be heard in the cockpit as the high-pressure air went into the brake
lines. The CVR recorded a "high pitch" sound at 0839:44, and the pilots immediately began making

FACTUAL REPORT - AVIATION Page 1

 This space for binding

National Transportation Safety Board NTSB ID: DEN00LA057

FACTUAL REPORT Occurrence Date: 03/12/2000

AVIATION Occurrence Type: Accident

Narrative (Continued)

verbal exclamations. The CVR documentation suggests that the airplane left the runway at 0840:00.

The manufacturer's Airplane Flight Manual indicates that when emergency braking is utilized, the
anti-skid protection is deactivated. 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%. C. The anti-skid system
must be operational.

FACTUAL REPORT - AVIATION Page 1a

 This space for binding

NTSB ID: DEN00LA057

National Transportation Safety Board

FACTUAL REPORT Occurrence Date: 03/12/2000

AVIATION Occurrence Type: Accident

Landing Facility/Approach Information

Airport Name Airport ID: Airport Elevation Runway Used Runway Length Runway Width
JACKSON HOLE AIRPORT JAC 6445 Ft. MSL 18 6299 150

Runway Surface Type: Asphalt

Runway Surface Condition: Ice; Snow--compacted

Approach/Arrival Flown: ILS

VFR Approach/Landing: None

Aircraft Information
Aircraft Manufacturer Model/Series Serial Number
Learjet 60 /60 167

Airworthiness Certificate(s): Normal

Landing Gear Type: Retractable - Tricycle

Amateur Built Acft? No Number of Seats: 10 Certified Max Gross Wt. 23500 LBS Number of Engines: 2
Engine Type: Engine Manufacturer: Model/Series: Rated Power:
Turbo Fan P&W PW-305A 4600 LBS
- Aircraft Inspection Information
Type of Last Inspection Date of Last Inspection Time Since Last Inspection Airframe Total Time

Continuous Airworthiness 03/2000 9 Hours 320 Hours

- Emergency Locator Transmitter (ELT) Information

ELT Installed?/Type Yes / ELT Operated? No ELT Aided in Locating Accident Site?

Owner/Operator Information
Registered Aircraft Owner Street Address
14651 DALLAS PKWY, STE 600
BOMBARDIER AEROSPACE CORP City State Zip Code
DALLAS TX 75240
Street Address
Operator of Aircraft 14651 DALLAS PKWY, STE 600
City State Zip Code
BOMBARDIER AEROSPACE CORP
DALLAS TX 75240
Operator Does Business As: FLEXJET Operator Designator Code:
- Type of U.S. Certificate(s) Held: None
Air Carrier Operating Certificate(s):

Operating Certificate: Operator Certificate:

Regulation Flight Conducted Under: Part 91: General Aviation

Type of Flight Operation Conducted: Executive/Corporate

FACTUAL REPORT - AVIATION Page 2

 This space for binding

National Transportation Safety Board NTSB ID: DEN00LA057

FACTUAL REPORT Occurrence Date: 03/12/2000

AVIATION Occurrence Type: Accident

First Pilot Information

Name City State Date of Birth Age

On File On File On File On File 31

Sex: M Seat Occupied: Left Occupational Pilot? Civilian Pilot Certificate Number: On File

Certificate(s): Airline Transport; Commercial

Airplane Rating(s): Multi-engine Land; Single-engine Land

Rotorcraft/Glider/LTA: None

Instrument Rating(s): Airplane

Instructor Rating(s): None

Current Biennial Flight Review?

Medical Cert.: Class 1 Medical Cert. Status: Valid Medical--no waivers/lim. Date of Last Medical Exam: 03/2000

This Make Airplane Airplane Instrument Lighter

All A/C
- Flight Time Matrix and Model Single Engine Mult-Engine
Night
Actual Simulated
Rotorcraft Glider
Than Air

Total Time 4415 1389 838 3552 648 198 45

Pilot In Command(PIC) 2495 1101 838 1657 620 198
Instructor 516 516 50 40
Instruction Received

Last 90 Days 156 156 156 35 4 10

Last 30 Days 96 96 96 13 3
Last 24 Hours 1 1 1
Seatbelt Used? Yes Shoulder Harness Used? Yes Toxicology Performed? No Second Pilot? Yes

Flight Plan/Itinerary
Type of Flight Plan Filed: IFR
Departure Point State Airport Identifier Departure Time Time Zone

PROVO UT PVU 0757 MST

Destination State Airport Identifier

Same as Accident/Incident Location JAC

Type of Clearance: IFR

Type of Airspace: Class D

Weather Information
Source of Wx Information:

Company; Flight Service Station; TV/Radio Weather

FACTUAL REPORT - AVIATION Page 3

 This space for binding

National Transportation Safety Board NTSB ID: DEN00LA057

FACTUAL REPORT Occurrence Date: 03/12/2000

AVIATION Occurrence Type: Accident

Weather Information
WOF ID Observation Time Time Zone WOF Elevation WOF Distance From Accident Site Direction From Accident Site

JAC 0815 MST 6445 Ft. MSL 0 NM 0 Deg. Mag.

Sky/Lowest Cloud Condition: Thin Overcast 1200 Ft. AGL Condition of Light: Day

Lowest Ceiling: Overcast 1200 Ft. AGL Visibility: 10 SM Altimeter: 30.00 "Hg

Temperature: -9 ° C Dew Point: -13 ° C Weather Conditions at Accident Site: Visual Conditions

Wind Direction: 30 Wind Speed: 9 Wind Gusts:

Visibility (RVR): 0 Ft. Visibility (RVV) 0 SM

Precip and/or Obscuration:

Accident Information
Aircraft Damage: Substantial Aircraft Fire: None Aircraft Explosion None

- Injury Summary Matrix Fatal Serious Minor None TOTAL

First Pilot 1 1
Second Pilot 1 1
Student Pilot

Flight Instructor

Check Pilot

Flight Engineer

Cabin Attendants

Other Crew

Passengers

- TOTAL ABOARD - 2 2
Other Ground 0 0 0 0
- GRAND TOTAL - 0 0 0 2 2

FACTUAL REPORT - AVIATION Page 4

 This space for binding

NTSB ID: DEN00LA057

National Transportation Safety Board

FACTUAL REPORT Occurrence Date: 03/12/2000

AVIATION Occurrence Type: Accident

Administrative Information
Investigator-In-Charge (IIC)
JAMES F. STRUHSAKER

Additional Persons Participating in This Accident/Incident Investigation:

OWEN R JONES
CASPER, WY

FACTUAL REPORT - AVIATION Page 5