Crash of a Learjet 35A in Eagle

Date & Time: Jul 15, 2005 at 0930 LT
Type of aircraft:
Operator:
Registration:
N620JM
Flight Type:
Survivors:
Yes
Schedule:
Aspen – Eagle
MSN:
35-207
YOM:
1979
Crew on board:
2
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
29612
Captain / Total hours on type:
8967.00
Copilot / Total flying hours:
9433
Copilot / Total hours on type:
75
Aircraft flight hours:
8234
Circumstances:
A witness saw the airplane approach from the east. She said that the airplane came in "pretty fast" and touched down "approximately half way down the runway." The witness said, "The nose was down. He hit the ground and within 3 seconds he was off the runway and gone. Then all you saw was smoke." The witness said when the airplane hit "the front end shook. It wobbled like a kid on a tricycle. When it shook, it kind of looked like it [the airplane] bounced. Then it was gone." The control tower operator said he heard the captain say something over the radio, which caused him to look in the direction of the airplane. The tower operator saw the airplane off the runway, the main landing gear came off behind the airplane, and the airplane caught fire. The tower operator said he saw four people get out of the airplane. The airplane came to rest in a shallow ravine approximately 331 feet north of the runway. An examination of the airplane showed impact damage to the nose gear and nose gear wheel well. An examination of the airplane's systems revealed no anomalies.
Probable cause:
The pilot's improper flare resulting in the hard landing and the fractured nose gear attachment, and the subsequent loss of control. Factors contributing to the accident were the high airspeed on approach, the pilot's improper in-flight planning/decision, and the pilot's inability to maintain directional control after the gear failure.
Final Report:

Crash of a Learjet 35A in Kansas City

Date & Time: Jan 28, 2005 at 2217 LT
Type of aircraft:
Operator:
Registration:
N911AE
Flight Type:
Survivors:
Yes
Schedule:
Salt Lake City - Kansas City
MSN:
35-109
YOM:
1977
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
5127
Captain / Total hours on type:
1236.00
Copilot / Total flying hours:
4301
Copilot / Total hours on type:
482
Aircraft flight hours:
11138
Circumstances:
The Learjet 35A received substantial damage on impact with airport property and terrain during a landing overrun on runway 19 (7,002 feet by 150 feet, grooved asphalt) at Charles B. Wheeler Downtown Airport (MKC), Kansas City, Missouri. The airplane was operated by a commercial operator as a positioning flight to Kansas City International Airport (MCI), Kansas City, Missouri, with a filed alternate destination of Lincoln Airport (LNK), Lincoln, Nebraska. Night instrument meteorological conditions prevailed at the time of the accident. LNK was a certificated airport with a snow removal plan and was served by runway 17R (12,901 feet by 200 feet, grooved asphalt and concrete). The flight was en route to MCI to pick up passengers and continue on as an on-demand charter but diverted to MKC following the closure of MCI. MCI was closed due to a McDonnell Douglas MD83 sliding off a taxiway during an after landing taxi on contaminated runway/taxiway conditions. MKC held a limited airport certificate that did not have a snow removal plan and was served by runway 19. Following a precision approach and landing on runway 19 at MKC, the Learjet 35A slid off the departure end of the runway and impacted airport property and terrain. The Learjet 35A was operated with inoperative thrust reversers as per the airplane's minimum equipment list at the time of the accident. About 1:05 hours before the accident, runway 19 Tapley values were recorded as 21-22-22 with 1/2 inch of wet snow. About 17 minutes before the accident, MKC began snow removal operations. About 7 minutes before the accident, the MKC air traffic control tower (TWR) instructed the snow removal vehicles to clear the runway for inbound traffic. TWR was advised by airport personnel that runway 19 was plowed and surface conditions were 1/4 inch of snow of snow; friction values were not taken or reported. While inbound, the Learjet 35A requested any braking action reports from TWR. The first airplane to land was a Cessna 210 Centurion, and the pilot reported braking action to the TWR as "moderate", which was then transmitted by TWR as "fair" from a Centurion in response to the Learjet 35A's query. The Cessna 210 Centurion pilot did not use brakes during landing and did not indicate this to TWR during his braking action report. The Aeronautical Information Manual states that no correlation has been established between MU values and the descriptive terms "good," fair," and "nil" used in braking action reports. The Airport Winter Safety and Operations advisory circular (AC) states that "pilot braking action reports oftentimes have been found to vary significantly, even when reported on the same frozen contaminant surface conditions." The AC also states, "It is generally accepted that friction surveys will be reliable as long as the depth of snow does not exceed 1 inch (2.5 cm) and/or depth of wet snow/slush does not exceed 1/8 inch (3mm). The Learjet 35A flightcrew calculated a landing distance 5,400 feet. Two of the cockpit voice recording channels, which normally contain the pilot and copilot audio panel information, were blank.
Probable cause:
The contaminated runway conditions during landing. Contributing factors were the operation of the airplane without thrust reversers, flight to the planned alternate airport not performed by the flightcrew, and the insufficient runway information. Additional factors were the airport property and terrain that the airplane impacted.
Final Report:

Crash of a Learjet 35A in San Diego: 5 killed

Date & Time: Oct 24, 2004 at 0025 LT
Type of aircraft:
Operator:
Registration:
N30DK
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
San Diego – Albuquerque
MSN:
35-345
YOM:
1980
Crew on board:
2
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
5
Captain / Total flying hours:
13000
Captain / Total hours on type:
600.00
Copilot / Total flying hours:
3000
Copilot / Total hours on type:
375
Aircraft flight hours:
10047
Circumstances:
On October 24, 2004, about 0025 Pacific daylight time, a Learjet 35A twin-turbofan airplane, N30DK, registered to and operated by Med Flight Air Ambulance, Inc. (MFAA), collided into mountainous terrain shortly after takeoff from Brown Field Municipal Airport (SDM), near San Diego, California. The captain, the copilot, and the three medical crewmembers received fatal injuries, and the airplane was destroyed. The repositioning flight was operated under the provisions of 14 Code of Federal Regulations (CFR) Part 91 with an instrument flight rules (IFR) flight plan filed. Night visual meteorological conditions prevailed. The flight, which was the fourth and final leg of a trip that originated the previous day, departed SDM at 0023.
Probable cause:
The failure of the flight crew to maintain terrain clearance during a VFR departure, which resulted in controlled flight into terrain, and the air traffic controller's issuance of a clearance that transferred the responsibility for terrain clearance from the flight crew to the controller, failure to provide terrain clearance instructions to the flight crew, and failure to advise the flight crew of the MSAW alerts. Contributing to the accident was the pilots' fatigue, which likely contributed to their degraded decision-making.
Final Report:

Crash of a Learjet 35A in Nevis

Date & Time: Jul 13, 2004 at 1920 LT
Type of aircraft:
Registration:
N829CA
Flight Type:
Survivors:
Yes
Schedule:
Sint Maarten - Nevis
MSN:
35-459
YOM:
1981
Crew on board:
2
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
6500
Captain / Total hours on type:
539.00
Copilot / Total flying hours:
10000
Copilot / Total hours on type:
539
Aircraft flight hours:
9899
Circumstances:
The flightcrew stated that approximately 8 miles out on a visual approach for runway 10 they requested winds and altimeter setting from the control tower. They received altimeter setting 29.95 inches Hg., and winds from 090 degrees at 20 knots. About 5 miles out, in full landing configuration, they checked wind conditions again, and were told 090 at 16 knots. They were holding Vref of 125 knots plus 10 knots on final. The approach was normal until they got a downdraft on short final. The airplane sank and they reacted by immediately adding engine power and increasing pitch, but the airplane continued to sink. The airplane's main landing gear came in contact with the top of the barbwire fencing at the approach end of the runway. The airplane landed short of the threshold. The airplane was under control during the roll out and they taxied to the ramp. A special weather observation was taken at the Vance W. Amory International Airport at 1930, 10 minutes after the accident. The special weather observation was winds 090 at 15 knots, visibility 10 statute miles, scattered clouds at 2,000, temperature 27 degrees centigrade, dewpoint temperature 23 degrees centigrade, altimeter setting 29.95 inches hg.
Probable cause:
The pilot's encounter with a downdraft.
Final Report:

Crash of a Learjet 35A in Utica

Date & Time: Mar 19, 2004 at 0645 LT
Type of aircraft:
Operator:
Registration:
N800AW
Flight Type:
Survivors:
Yes
Schedule:
Columbus - Utica
MSN:
35-149
YOM:
1977
Location:
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
5903
Captain / Total hours on type:
2036.00
Copilot / Total flying hours:
3956
Copilot / Total hours on type:
504
Aircraft flight hours:
15331
Circumstances:
The copilot was flying an ILS approach at an airspeed of Vref plus 10 knots, and the captain made visual contact with the runway about 350 feet agl. The airplane then drifted high on the glideslope, and the copilot decreased engine power. The sink rate subsequently became too great. By the time the captain called for a go-around, the airspeed had deteriorated, and the stick shaker activated. Although power was applied for the go-around, the airplane impacted the runway in a level attitude before the engines spooled up. The airplane came to rest in snow, about 20 feet off the left side of the runway, near mid-field.
Probable cause:
The copilot's failure to maintain airspeed, and the captain's delayed remedial action, which resulted in an inadvertent stall and the subsequent hard landing.
Final Report: