Accident Cessna 421C N98487,
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ASN Wikibase Occurrence # 377640
 
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Date:Thursday 28 February 1985
Time:15:00 LT
Type:Silhouette image of generic C421 model; specific model in this crash may look slightly different    
Cessna 421C
Owner/operator:C & M Aviation
Registration: N98487
MSN: 421C-0065
Total airframe hrs:260 hours
Engine model:CONTINENTAL TSIO-520L
Fatalities:Fatalities: 0 / Occupants: 1
Aircraft damage: Substantial
Category:Accident
Location:Butte, MT -   United States of America
Phase: En route
Nature:Ferry/positioning
Departure airport:Oakland, CA
Destination airport:
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
WHILE IN LEVEL FLT THE PLT NOTICED A PUFF OF SMOKE EMIT FROM THE LEFT ENGINE, FOLLOWED BY THE APPEARANCE OF HYDRAULIC FLUID AND THE ILLUMINATION OF THE LEFT AND RIGHT HYDRAULIC FLOW LIGHTS. THE PLT LOWERED THE LANDING GEAR DURING THE APCH, HOWEVER, THE NOSE GEAR DID NOT EXTEND. FLAMES WERE THEN NOTICED BURNING THROUGH THE TOP OF THE LEFT ENGINE COWLING. THE PLT SECURED THE ENGINE, USED THE EMERGENCY EXTENSION FOR THE NOSE GEAR AND LANDED THE ACFT. INVESTIGATION REVEALED THE FIRE STARTED FROM HYDRAULIC FLUID WHICH SPRAYED FROM A BROKEN HYDRAULIC LINE ONTO THE SUPERCHARGER. A SWIVEL HOSE ALUMINUM FITTING, P/N AE70101JZ174, ON THE HYDRAULIC LINE FAILED FOR UNDETERMINED REASONS.

Probable Cause:

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: DEN85LA093
Status: Investigation completed
Duration:
Download report: Final report

Sources:

NTSB DEN85LA093

Location

Revision history:

Date/timeContributorUpdates
30-Mar-2024 14:54 ASN Update Bot Added

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