use pitot in a sentence.
All (or most) comercial planes also have an amber LED alarm on the caution panel that says PITOT when the PITOT HEAT switch is turned off.
If that alarm was functional and activated before they entered that stall profile, it was, in my opinion, some serious misjudgement by the pilots not to turn the pitot heat on.
AoA sensors are separate from pitot tubes and in every schematic I have seen located on the exterior of the aircraft, so I believe the measurement is direct.
But without Pitot tubes, what indication of airspeed does one have?
There is other debris that can clog pitot tubes.
The pitot static system had demonstrated itself to be failing, leading the pilots to lose faith in their instruments.
The pitot tubes (which caused the initial problem by icing over) are there to determine exactly that.
According to the article's timeline, dual pitot failure occurred at about 02:10:06.
Because the VSI doesn't use the pitot tubes?
Airspeed, altimeter, and _vertical speed indicators_ rely on a pitot-static system.
I fully support this message; having performed an instrument rating renewal check just yesterday in sub-optimal weather I experienced a frozen pitot-tube (the thingie that measures dynamic pressure; or a component of the airspeed).
According to the article, the pitots did, in fact, de-ice and return to normal functioning.
At least you can find some comfort in that AF447 was the first fatal accident with the type, and that there's been continuous improvement throughout the years (including replaced pitot probes).
I wonder if in a couple of decades we'll look back at pitot tubes and wonder what the hell we were thinking using such a fragile solution.
Yes, I keep hearing about pitot tube problems...