ASN Wikibase Occurrence # 369200
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can
submit corrected information.
Date: | Tuesday 14 February 1989 |
Time: | 12:00 LT |
Type: | Balloon Works AX8-24 |
Owner/operator: | Private |
Registration: | N7127J |
MSN: | F8-113 |
Total airframe hrs: | 14 hours |
Fatalities: | Fatalities: 0 / Occupants: 3 |
Aircraft damage: | Substantial |
Category: | Accident |
Location: | Telluride, CO -
United States of America
|
Phase: | Landing |
Nature: | Private |
Departure airport: | |
Destination airport: | |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:THE COMMERCIAL PLT AND TWO FRIENDS WERE FLYING HIS BALLOON IN MOUNTAINOUS TERRAIN. DURING THE APPROACH TO LAND, THE PLT OPENED THE BURNER VALVE TO FLARE. THE VALVE STUCK OPEN AND THE PLT ATTEMPTED TO SHUT OFF FUEL AT THE PROPANE BOTTLE. THAT VALVE STUCK OPEN ALSO, AND THE BALLOON STARTED TO RISE. THE PLT REDUCED THE HEAT ENTERING THE ENVELOPE BY PULLING THE BURNER OUT OF THE THROAT AND POINTING IT OVERBOARD. THIS BALLOON WAS EQUIPPED WITH AN EMERGENCY 'BACK UP' BURNER SYSTEM. BY USING THE BACK UP BURNER, THE PLT MANEUVERED AND LANDED IN A WOODED AREA. THE PLT SAID THAT AFTER LANDING, HE WAS ABLE TO WORK THE STUCK VALVES UNTIL THEY CLOSED AND THE FUEL FLOW CEASED. A POST ACCIDENT INVESTIGATION REVEALED THAT CONDITIONS EXISTED CONDUCIVE TO ICE FORMING IN BOTH VALVES AND PREVENTING NORMAL OPERATION.
Probable Cause: ICE FORMING IN THE FUEL TANK SHUT OFF VALVE, AND THE BURNER BLAST VALVE RESULTING IN A LOSS OF CONTROL DURING LANDING.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | DEN89LA077 |
Status: | Investigation completed |
Duration: | 1 year and 11 months |
Download report: | Final report |
|
Sources:
NTSB DEN89LA077
Location
Revision history:
Date/time | Contributor | Updates |
24-Mar-2024 11:56 |
ASN Update Bot |
Added |
The Aviation Safety Network is an exclusive service provided by:
CONNECT WITH US:
©2024 Flight Safety Foundation