A short but spectacular video of a DC-10-10 air tanker dropping fire fighting retardant. The aircraft are operated by US company 10 Tanker. The company has had three DC-10s converted to date, two of which are in service. Each carries nearly 12,000 US gallons (45,000 litres) of water or fire retardant in an exterior belly-mounted tank, the contents of which can be released in eight seconds.
UPDATE An even more impressive video of a mountain drop on the 1500 acre Silverado Fire. This neatly underlines the importance of detailed structural stress assessment and usage monitoring. The National Transportation Safety Board (NTSB) made recommendations on the need for rigorous maintenance programmes after accidents in 2002.
DC-10 at the Silverado Fire Sept 2014 (Credit: Initial Attack Fire Media)
For detailed coverage see the excellent Fire Aviation site.
DC-10 Air Tanker (Credit: Bill Gabbert / Fire Aviation)
UPDATE 24 September 2014: An illustration of the dangers of aerial fire fighting can be found in this NTSB report issued today.
UPDATE 18 November 2014:FireAviation report that the first DC-10 to be converted for 10 Tanker has been retired, after 10 years service and 1,250 missions. The company is converting a fourth DC-10 which will take on the same fire fighting callsign ‘Tanker 910’.
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