PARIS, June 20 (Reuters) - Lockheed Martin (LMT.N) has raised concerns with the U.S. Defense Department and Federal Trade Commission (FTC) about L3Harris's (LHX.N) acquisition of Aerojet Rocketdyne (AJRD.N), Lockheed's chief operating officer said on Tuesday. Frank St John told Reuters that Lockheed, Aerojet's biggest customer, wanted L3Harris to ensure access to rocket motors, fair pricing and IP protections, adding it had received "little response" from L3Harris over its concerns. If L3Harris continues to be unresponsive, Lockheed wants the Defense Department or FTC to put in place a mechanism to guarantee access to technology, St John said. L3Harris, Aerojet Rocketdyne, the FTC and Defense Department did not immediately respond to emailed requests for comment. Lockheed had previously attempted to buy Aerojet in a $4.4 billion deal, but walked away from the acquisition in February 2022 after the FTC sued to block the deal, citing concerns that Lockheed could hinder competitors' fair access to Aerojet products.

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Persons: Lockheed Martin, Aerojet, Frank St John, L3Harris, we've, St John, Aerojet Rocketdyne, Lockheed's, Greg Hayes, Chris Calio, Valerie Insinna, Mark Potter Organizations: Lockheed, U.S . Defense Department, Federal Trade Commission, Reuters, Paris, Defense Department, FTC, Aerojet, Thomson Locations: L3Harris, Ukraine