Erickson Air-Crane, which manufactures S-64 heavy-lift helicopters for government and commercial use, announced terms for its IPO on Monday. The Portland, OR-based company plans to raise $75 million by offering 5.35 million shares at a price range of $13.00 to $15.00. At the midpoint of the proposed range, Erickson Air-Crane would command a market value of $154 million. The preliminary net sales estimate for 2011 is $152-154, a 29-30% increase. Erickson Air-Crane, which was founded in 1971, plans to list on the NASDAQ under the symbol EAC. Stifel Nicolaus Weisel is the lead underwriter on the deal.