Beechcraft B99 N99TH
22 September 2000 · Missoula, Montana, United States · No injuries
Summary
On 22 September 2000 at about 08:20 local time, a Beechcraft B99 registered N99TH, operated by Alpine Air, was involved in an accident near Missoula, Montana, 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.
The record
- Date
- at 08:20
- Classification
- Accident
- Location
- Missoula, Montana, United States
- Nearest airport
- Missoula International Ai (MSO)
- Coordinates
- 46.8491, -113.9892
- Aircraft
- Beechcraft B99
- Registration
- N99TH
- Category
- Airplane
- Engines
- 2
- Operator
- Alpine Air
- Operating rule
- Part 135: Air Taxi & Commuter
- Purpose of flight
- Unknown
- Phase of flight
- Not recorded
- Route
- Billings → Unknown
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Night/Dark
- NTSB number
- SEA00LA183
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 2 | 0 | 0 | 0 | 2 |
Probable cause
A loss of directional control due to a brake locked as a result of snow and ice contamination.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
The airplane touched down on the centerline of runway 29. When the pilot applied brakes 'the right brake locked up' and the airplane immediately veered to the right. The pilot applied left brake, left rudder and reversed the left propeller, however, the airplane continued to the right. The airplane collided with a taxiway light and runway marker before departing the right side of the runway. The airplane sustained substantial damage to the fuselage. Post-accident photographs of the airplane revealed ice and snow deposits on the cargo pod, right lower engine nacelle, main landing gear strut and right dual brake assembly. The landing runway in Missoula was dry, however, the departure runway at Billings was contaminated with snow and slush. Post-accident inspection of the airplane, by inspectors from the FAA Helena, Montana, Flight Standards District Office, revealed no evidence of system mechanical malfunction that would result in a brake failure.
Quoted verbatim from the NTSB record.
Other Beechcraft B99 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 23 Sep 1985 | Beechcraft B99 | Grottoes, Virginia, United States | - | Fatal | 14 |
| 28 Oct 1982 | Beechcraft B99 | Clarksville, Tennessee, United States | Air Kentucky Airline | No injuries | - |
| 17 Jun 1981 | Beechcraft B99 | Shreveport, Louisiana, United States | Royale Airline | No injuries | - |
| 23 Sep 1980 | Beechcraft B99 | Orlando, Florida, United States | Chautaugua Air | No injuries | - |
| 31 Oct 1979 | Beechcraft B99 | Abilene, Texas, United States | Chaparral Airl | Minor injuries | - |
| 24 Aug 1978 | Beechcraft B99 | Pullman, Washington, United States | Cascade Airway | Minor injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 16 Apr 2000 | Maule M-5-210C | Babb, Montana, United States | - | Fatal | 1 |
| 3 Jul 2000 | Cessna 120 | Toston, Montana, United States | - | No injuries | - |
| 18 Jul 2000 | Ercoupe 415-D | Hamilton, Montana, United States | - | Fatal | 1 |
| 26 Jul 2000 | Eiriavion Oy PIK 20E | Hamilton, Montana, United States | Valeo, James G. | Serious injuries | - |
| 31 May 2000 | Cessna 414 | Monarch, Montana, United States | - | Fatal | 3 |
| 10 Jul 2000 | Keith Kinden REBEL | Libby, Montana, United States | - | No injuries | - |