Fire-retardant liquid is dropped from internal tanks of a US Army Aviation Test Board CH-47C Chinook on a measuring grid at the Apalachicola, FL Airport. The test was conducted to support the US Forest Service's development of a large helicopter fire-retardant delivery system. Drops were made at airspeeds ranging from hover to 125 knots. From Vertiflite, May/June 1974 (page 11).

Fire Retardant

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Fire-retardant liquid is dropped from internal tanks of a US Army Aviation Test Board CH-47C Chinook on a measuring grid at the Apalachicola, FL Airport. The test was conducted to support the US Forest Service's development of a large helicopter fire-retardant delivery system. Drops were made at airspeeds ranging from hover to 125 knots. From Vertiflite, May/June 1974 (page 11).

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Added to Vertiflite Images and categorized in 4 years ago

 

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