Airlines face another altimeter upgrade costing billions
US airlines must retrofit radio altimeters to withstand adjacent-band wireless interference, costing an estimated $4.49 billion to protect aircraft altitude readings and safety systems.
Pilot union urges FAA to reject Rainmaker's drone cloud-seeding plan | TechCrunch
Airline pilots union urges FAA to deny Rainmaker's request to deploy cloud-seeding flares on small drones due to significant safety and environmental concerns.