March 23 (Reuters) - Defense technology prime contractor AEVEX, backed by buyout firm Madison Dearborn Partners, on Monday filed for an initial public offering in the United States.

The U.S. IPO market remains accessible despite the ongoing conflict in the Middle East, with some issuers in recent weeks braving market volatility to push ahead with their listings.

The Solana Beach, California-based company and some of its existing shareholders plan to sell shares in the offering.

AEVEX will list on the New York Stock Exchange under the symbol "AVEX."

Goldman Sachs, BofA Securities and Jefferies are the lead underwriters for the offering.