WASHINGTON: The US Air Force on Monday approved the formal start of pilot training on the A-model of the F-35 Joint Strike Fighter at a Florida military base, paving the way for 36 expert pilots to be trained next year as instructors for the new stealth warplane.

Air Force General Edward Rice, the four-star general in charge of Air Education and Training Command, said an operational evaluation completed this fall showed that Eglin Air Force Base was ready to start training pilots to fly the radar-evading Lockheed Martin Corp F-35 jet in January.

“It's a milestone,” Rice told Reuters in a telephone interview. “We are ready at this point to begin our formal training program.”

The news came days after the Pentagon signed a $3.8 billion contract with Lockheed to buy a fifth batch of F-35s, a move that safeguarded those funds from automatic budget cuts that are due to start taking effect in January, unless Congress finds other ways to cut the deficit.

Rice announced his decision to declare the F-35 “ready for training” after a meeting with officers who oversee the Florida air base, where the Marine Corps is also training its pilots to fly the B-model of the new plane, and Air Force Lieutenant General Christopher Bogdan, the Pentagon's F-35 program manager.

Rice said training pilots to fly the F-35 posed some unique challenges because it is the Air Force's most complex weapons system and there is a large degree of concurrency, or overlap, between development and production on the program.

“We are going to see upgrades of the aircraft more frequently than we would in a more mature system. That will introduce a level of complexity that we don't normally (have),” Rice said.

Over coming years, he said, training will have to keep pace with hardware and software upgrades to the “very basic version of the aircraft” that was on the flight line now at the base.

He said Monday’s decision cleared the way for six groups of six pilots to be trained to fly the Air Force's conventional takeoff and landing model of the F-35, a single-seat, single-engine warplane, over the course of the coming year.

Lockheed is building three models of the plane, one each for the Air Force, Marine Corps and Navy. F-35s are also being built for the eight countries that are helping to fund its development: Britain, Italy, Turkey, Norway, Denmark, Australia, the Netherlands and Canada.

A Dutch pilot may also be trained next year, Rice said.

Rigorous training

For now, only experienced pilots who have been instructors for other aircraft will be trained to fly the F-35 A-model, he said, adding that it was not yet clear when the first group of brand new pilots would be trained on the new fighter.

Eventually the Air Force expects to train 100 or more pilots a year to fly the jet, and will also train some 2,100 mechanics to service the planes.

Starting Jan. 7, the Air Force said new F-35A pilots will receive about 130 hours of classroom instruction, as well as time on a full-mission simulator that helps prepare pilots for in-flight emergencies such as an engine fire.

Each pilot will also spend nearly 23 hours training on a ground-based device that prepares them to use the plane’s ejection seat.

Rice, who flew B-52 and B-2 bombers, said the sophistication of the sensors and other systems on board the F-35 meant that the plane's pilots needed different skills than the pilots who trained for aerial dogfights during World War Two.

Today's F-35 pilots will distinguish themselves more by being able to maximize the capabilities of the high-end electronics systems than by their prowess in maneuvers.

Several hundred mechanics have already been trained at the air base to maintain the new fighter jet, which has special coatings to make it nearly invisible to enemy radar.

Eleven experienced fighter pilots have learned to fly the A-model of the F-35 since the Air Force approved initial military flights last February.

Rice said a new, automated on-board logistics system would eventually make it easier for mechanics to troubleshoot problems with the new planes, but the software system was still at an early stage and required more work - as did the overall software needed to fly the plane.