Instead of the swiss cheese model, bear, may I suggest "the links in the mishap chain" as a supplement. This model I was familiar with before the cheese model. It tends to indicate a serial order of causes and contributions to a mishap. Any one of these links being broken ends the accident event chain, and the mishap doesn't occur.
TEXT EDITED OUT, 3holelover covered this more concisely. LW50
"It's not the pitot tubes" is most likely right from an analytical sense, since pitot tube malfunctions are neither unknown nor new. You then trip over two systems interface issues: one is hardware to hardware, the other is hardware to wetware. (wetware ~ human brain) Since such issues can get quite complex, the easy soundbyte isn't available ... but giving out an uncomplicated soundbyte is what is asked for in the public information sector of the process.
Were no rice bowls at risk of being tipped, you'd get a different (and cleaner) analytic approach from parties A, B, C, D, etcetera, and different
PR emissions.