RATE MATTERs In “Safety Warning for U.S. Helicopter Industry” (July 29-Aug. 28, p. 9), the graph’s Y axis label is “Rate per 100,000 Flight Hours” but the paragraph accompanying the graph refers to “a rate of 0.76/1 million flight hours.” Which is correct? The difference is important, especially regarding matters of life and money Stephen F. Kittredge, South Portland, Maine Editor’s note: The Y axis label is correct. AOA OMISSION It was ...

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