ASN Wikibase Occurrence # 327212
| Date: | Thursday 9 May 1985 |
| Time: | 08:44 |
| Type: |  Consolidated PBY-5A Catalina |
| Owner/operator: | Drilling Muds |
| Registration: | N84857 |
| MSN: | 1522 |
| Total airframe hrs: | 1481 hours |
| Engine model: | Pratt & Whitney R-1830-94 |
| Fatalities: | Fatalities: 1 / Occupants: 3 |
| Aircraft damage: | Substantial, written off |
| Category: | Accident |
| Location: | Lewistown Municipal Airport, MT (LWT) -
 United States of America
|
| Phase: | Standing |
| Nature: | Survey |
| Departure airport: | Lewistown Municipal Airport, MT (LWT/KLWT) |
| Reno/Tahoe International Airport, NV (RNO/KRNO) | |
| Confidence Rating: |  Accident investigation report completed and information captured |
During taxi to takeoff the brakes failed. The pilot attempted to groundloop the aircraft, which rolled down hill and collided with a gully. During preflight the co-pilot inadvertently added hydraulic fluid in the alcohol tank. The hydraulic pump cavitated.
PROBABLE CAUSE:
aircraft preflight..inadequate..pilot in command
hydraulic system..pressure too low
brakes(emergency)..not used..pilot in command
aircraft service..improper..copilot/second pilot
safety system(other)..not engaged
emergency procedure..not followed..pilot in command
supervision..poor..pilot in command
CONTRIBUTING FACTORS:
fluid,hydraulic..inadequate
acft/equip inadequate,visual restriction..copilot/second pilot
hydraulic system,reservoir..low level
window,inspection/observation..blocked(partial)
crew/group coordination..poor..pilot in command
anti-ice/deice system,propeller..unmarked
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
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