United Technologies Corp’s finance chief on Thursday declined to comment on a report the company may sell or spin off its Sikorsky helicopter unit, but pointed to brightening prospects for the maker of Black Hawk helicopters. “If we comment on this rumor, we’ll have to comment on every subsequent rumor, so I can’t say, ‘Yes, we’re selling Sikorsky,’ or, ‘No, we’re not selling Sikorsky,'” said Chief Financial Officer Greg Hayes, when asked at an investor conference about last week’s report. It accounted for about 10 percent of United Tech’s overall revenue of $62.6 billion last year. But he said Sikorsky now has opportunities with U.S. contracts for a combat rescue helicopter and a presidential helicopter, as well as “a huge international market in place that’s going to play out.” Sikorsky “has a very bright future but a tough couple of years,” Hayes said.