Expensive yes. Toy NO. The CAT IIIA capability it provides is a small part of the overall operational and safety enhancements provided by the HGS. The HGS provides: precise energy management in all phases of flight, precise guidance for wind shear escape and TCAS RA, runway centre line tracking, runway length remaining readout and AoA readout with additional very definitive indication of the aircraft's margin to stick shaker. All this and more all while being "heads up".Canoehead wrote:If used properly and during all phases of flight, it is hardly a toy. There is a lot more benefit to it than just being able to conduct Category 3 approaches.BE20 Driver wrote:Pretty expensive toys for the amount of use they would get.
A HUD is part of an HGS. However you can have a HUD that is not part of an HGS. Two very different things. It's not the HUD that allows the Jazz RJ and Q fleets to do CAT3a. It's the HGS.hithere wrote:HGS(synonymous with HUD)
It's an invaluable tool.