On the Fly …

George B. Litchford Sr., who helped develop TCAS, died on Feb. 28 at age 89 …A proposed AD would require Cirrus SR20 owners to check the heat exchanger …Two F-16s intercepted a Cessna 177 that violated restricted airspace in D.C. …Southwest grounded 41 jets as FAA investigates failure to inspect them …Continental Airlines could face manslaughter charge in Concorde crash.

George B. Litchford Sr., an inventor who helped develop TCAS (Traffic alert and Collision Avoidance System) for aircraft, died on Feb. 28 at age 89...

A proposed FAA Airworthiness Directive would require owners of Cirrus SR20s to inspect and perhaps replace the heat exchanger to prevent carbon monoxide from leaking into the cabin...

Alarms were raised at the U.S. Capitol on Wednesday when the pilot of a Cessna 177 with no radio violated restricted airspace and was intercepted by two F-16s...

Southwest Airlines grounded 41 airplanes and suspended three employees as the FAA investigates the airline's failure to keep up with required inspections of some airplanes...

A French prosecutor has asked judges to bring manslaughter charges against Continental Airlines over the 2000 crash of a Concorde in which 113 people died. Investigators found the SST hit a piece of metal on the runway that had allegedly fallen off a Continental airplane.