This story was originally published July 5, 2016, at 1:21 p.m. EST.
RAF FAIRFORD, England — Two US Marine Corps F-35Bs on Tuesday completed validation flights with the UK government, clearing the jets to perform at Farnborough International Airshow next week.
During a validation flight, the UK Ministry of Defence confirms that an aircraft's flight profile meets regulations and approves it for the show. The two jets took off around 2 p.m. from RAF Fairford and flew to Farnborough, landing back at Fairford after about 20 minutes.
The F-35Bs will do practice runs for the Royal International Air Tattoo (RIAT) on Wednesday, said Lt. Col Richard Rusnok, one of the Marine Corps F-35B pilots in town for the air shows.
The Air Force F-35As, which will fly only at RIAT, conducted their flight validation at Langley Air Force Base in Virginia before the jets flew across the Atlantic Ocean last week, said Maj. Will Andreotta, F-35A heritage flight team commander and an F-35 pilot.
One of the A-variants conducted a practice flight Tuesday morning, Andreotta said. A different F-35A will run through the same profile Wednesday morning, and the F-22s will practice Thursday.
"It's our first time flying in the UK so they have different rules. We're doing actually a new profile here that we don't do [in the US]," he said. "So today was one of those days to go out there and kind of look at the overall lay of the land, see where the show line is, where the crowd lines are. Obviously safety is our priority while we're over here."
During heritage flights, the aircraft typically conducts three maneuvers. The pilots first conduct an "arcing" or "banana pass," which gives the crowd a view of the top of the jet, then do a "flat pass" where the aircraft flies straight and level. In the US, the pilots fly over the crowd before breaking formation and landing, but because flying over the crowd is prohibited in the UK, the pilots will instead repeat either a flat or arching base, Andreotta said.
The F-35As will be joined during the heritage flight by an F-22 and a P-51 Warbird but will not be practicing in the UK with the other aircraft before the demonstration at RIAT, said Master Sgt. Samuel Smith, F-35 heritage flight team chief.
"It's our eighth air show, so we've actually done this quite a few times," he said.