worldranger wrote:ClubCX wrote:The birds idea is an interesting one. We do have a lot of birds at this time of year. That whole area around Trinity Bay is a popular migration tract. Recently I've seen flocks of egrets, pelicans, turkey vultures, other waterfowl flying in formation. Presumably birds wouldn't have sufficient mass to smash through a jet window though.
Its not about the window, it’s about the damage a bird could do to pitot & AOA vane instruments on either side of the cockpit windows
Right, and as I noted in my other response flight crews are well trained in how to handle an Unreliable Airspeed scenario and required to perform critical parts of it from memory. Damaged pitot probes on one side of the airplane would potentially cause erroneous Airspeed indications or stickshaker on one side. They would immediately get EICAS messages such as AIRSPEED DISAGREE and are trained to handle such.
The 767 doesn’t have the sophisticated “voting” in the Air Data System that the 777 and 787. They take the onside inputs for the onside displays. You could source select the other side input if you suspect your side is bad.
In an AIRSPEED DISAGREE situation, the crew would compare both sides and the ISFD and determine which seems correct. Ground Speed display is accurate.