ASN Wikibase Occurrence # 374142
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| Date: | Friday 26 September 1986 |
| Time: | 10:30 LT |
| Type: |  Hughes 269B |
| Owner/operator: | Dagnon Aviation |
| Registration: | N9427F |
| MSN: | 5-0174 |
| Total airframe hrs: | 4240 hours |
| Engine model: | LYCOMING HIO-360-AIA |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Baldwin, WI -
 United States of America
|
| Phase: | En route |
| Nature: | Executive |
| Departure airport: | Minneapolis, MN |
| Chippewa Falls, WI | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
AFTER PICKING UP HIS PASSENGER AT WILLIAMS PIPELINE, MINNEAPOLIS, MINNESOTA, THE PLT FLEW EASTWARD ALONG INTERSTATE 90 ENROUTE TO A PIPELINE NEAR WAUSAU, WISCONSIN. WHILE FLYING AT APPROXIMATELLY 400 FEET, THE PLT AND PASSENGER STATED THAT THE ENGINE STARTED TO MAKE A GRINDING OR KNOCKING NOISE AND THAT THERE WAS AN ALMOST INSTANTANEOUS LOSS OF POWER. THE PLT THEN DROPPED THE COLLECTIVE AND TURNED APPROXIMATELY 40 DEGREES TO THE SANDY, UPWARD SLOPING GROUND. THE NOSE OF THE AIRCRAFT REMAINED LOW AND THE TAILBOOM RAISED. THE MAIN ROTOR BLADES THEN STRUCK THE TAILBOOM. WRECKAGE EXAMINATION REVEALED THAT THE NUMBER FOUR PISTON ROD PROTRUDED THROUGH THE ENGINE CASE, WHICH WAS CRACKED FROM THE HOLE TO THE NUMBER FOUR CYLINDER BASE.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB CHI86LA236
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Mar-2024 06:24 | ASN Update Bot | Added |
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