Operational History
In September 2011 there were no Sierras registered with the US Federal Aviation Administration and it is likely that none exist anymore.
Read more about this topic: Advanced Aeromarine Sierra
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“To a surprising extent the war-lords in shining armour, the apostles of the martial virtues, tend not to die fighting when the time comes. History is full of ignominious getaways by the great and famous.”
—George Orwell (1903–1950)