My initial comment on the loss of electrics lacked clarity and thanks to all for correcting me.
What I’m really getting at is pulling the plug on something that provides all your necessary flight information and the cause might be behind a panel.
Something that didn’t come across in the calm cockpit shown in the recent BBC documentary was just what it’s like to fly in a cocktail shaker conditions AF447 may have been flying through.
The initial AF perhaps knee-jerk statement was – it may have been struck by lightning, yes possible but more important where, it may have taken out some important wiring.
Connectors shouldn’t but can come adrift, wiring can chafe and short, circuit boards can fracture.
I presume that a PFD failure requires a complete circuit to generate a failure message.
Basically with PFD’s all you eggs are in one basket and I’m going to stick with the opinion that this flight crew lost more than just their airspeed indication