gums:
I recall from an A-7 jock the following comment (or something like this): the A-7 has one pilot and 1.3 pilots worth of workload.
He tried walking me through which finger on his left had he used to pickle what, and when, during a bombing mission, and I nearly followed him, but got lost ... some years gone. The A-7 guys at the time made a big deal about being single pilot, and leaving the bats to those that needed them. (bat ~ NFO/BN/RIO).
EDIT: from your SR-71 site.
On 24 May 1963, CIA pilot Ken Collins was flying an inertial navigation system test mission. After entering clouds, frozen water fouled the pitot-static boom and prevented correct information from reaching the standby flight instruments and the Triple Display Indicator. The aircraft subsequently entered a stall and control was lost completely followed by the onset of an inverted flat spin. The pilot ejected safely. The wreckage was recovered in two days and persons at the scene were identified and requested to sign secrecy agreements. A cover story for the press described the accident as occurring to an F-105.
Some interesting thoughts on how to improve a pitot tube. If the research into this high altitude ice phenomenon can provide sufficient data to create an improved spec, I don't doubt that the engineers at Thales, Goodrich, and others will be able to provide a more resistant probe.
That would address one of the holes in the cheese, but perhaps not all of the holes in the cheese for the AF447 crash.