- Date
- February 11, 2012, 12:00 local (19:00 UTC)
- Place
- Wheatland, WY
- Injuries
- 4 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N382ALLearjet 31A
- Defining event
- Landing-landing roll: Loss of control on ground
- Weather
- Visual (VMC) · Day
- Status
- Completed · report April 2, 2012
- Report
- Approved by Office Director
- NTSB office
- Western Pacific Region
- Parties
- Federal Aviation Administration
- FAA report
- 20120211002109A
- Case key
- 82868
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The flight crew’s loss of directional control during landing on an ice- and water-contaminated runway, which resulted in a runway excursion.
Findings · 4
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
The operator reported that, as the airplane neared the destination airport, the flight crew prepared for landing. The runway appeared to have been plowed earlier in the day and was wet with a few patches of snow and ice. After a normal touchdown, the flight crew deployed the thrust reversers and applied brakes in an effort to gradually decelerate. The airplane began to veer to the right side of the runway and would not respond to the pilots' control inputs. The airplane continued off the runway surface traveling about 70 knots. The main landing gear collapsed and punctured the wings. The airplane incurred substantial damage to the right wing. The operator reported that there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation.
Factual narrative
The operator reported that as the airplane entered the vicinity of the destination airport, the pilots prepared for landing. The runway appeared to have been plowed earlier in the day and was wet with a few patches of snow and ice. After a normal touchdown, the pilots deployed the thrust reversers and applied brakes in an effort to gradually decelerate. The airplane began to veer to the right side of the runway and would not respond to the pilots' control inputs. The airplane continued off the runway surface traveling about 70 knots. The main landing gear collapsed and punctured the wings. The airplane incurred major damage to the right wing. The operator reported there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation.
Aircraft
- Registration
- N382AL
- Reported as
- Learjet 31A
- Category
- Airplane
- Serial number
- 192
- Engines
- Garrett TFE731-2-3B, 3,500 lbs thrust, turbo fanturbo fan
- Damage
- Substantial damage
- Flight
- Part 135
- Operator
- International Jet Services, Inc.
- Registered owner
- Mm Air Inc
- Airworthiness certificate
- Standard, Transport
- Departed
- APA · Centennial, CO
- Destination
- EAN · Wheatland, WY
- Flight plan
- IFR
- Airport
- EAN · Phifer Airfield, runway 08, 5,900 × 75 ft, asphalt
Flight crew · 2
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 65
- Injuries
- None
- Certificate
- Airline transport
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, With waivers/limitations
- Flight hours
- 12,541 total · 384 in this make and model
- Role
- Co-pilot
- Age
- 45
- Certificate
- Airline transport
- Airplane ratings
- Multi-engine land, Single-engine land, Single-engine sea
- Medical
- Class 1, Without waivers/limitations
- Flight hours
- 5,501 total · 6 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 110° at 11 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 12 °F, dew point 9 °F
- Altimeter
- 30.55 inHg
Docket · 1
The files NTSB released with the investigation on March 2, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.2 MB in all.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.