Early warning of Air Speed sensors "failure"
Considering the importance of Air Speed (critical to "advanced planes" Systems) why not to implement an "EW AS resource" to alert the crew, before the System actions.
Pitotīs failure (e.g. at cruise) are not sudden ("digital"). They start to be transformed, in altimeters for example, gradually. Thiells 727 (NW N274US) showed this gradual deterioration. I think that an encounter of a dangerous icing condition when cruising, is also gradual, technically allowing a warning (of this crucial info) before "law switching" by the Systems.
And this perhaps could be a "band aid" before we have better AS sensors.
Last edited by Jetdriver; 12th Jun 2011 at 23:39.