2371. The U.S. Coast Guard HH-65A Helicopter
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Paper
Abstract
The U.S. Coast Guard maintains and operates a fleet of 95 HH-65A (Dauphin) Short Range Recovery (SRR) helicopters. These aircraft were built by American Eurocopter (formerly Aerospatiale Helicopter Corporation) in Grand Prairie, Texas and each is equipped with two LTS 101-B2 engines built by Allied Signal Engines (formerly Textron Lycoming Corporation). They were delivered to the Coast Guard between November 1984 and April 1989, and replaced the Coast Guard HH-52A (Sikorsky S62) after a 20 year service life. The fleet is primarily used for Search and Rescue (SAR), law enforcement and pollution response. The HH-65A fleet flies over 49,000 hours annually and will attain 500,000 flight hours in September 1997. This paper covers the evolution of the HH-65A, paying particular attention to weight growth. The paper first reviews the operational requirements that defined the procurement of the aircraft. Then it examines what modifications effected weight both during development and since delivery. The paper closes with a look at proposed future development and efforts to mitigate the weight growth problem in the HH-65A.
