Originally Posted by Lyman
Could those have been two (incorrect, but consonant) speeds upon which PF based his "Overspeed"?
No, the speed from ADR2 that was not recorded would have been close to either ADR1 or ADR3
(when different) which were recorded. Note also that the right PFD was showing the speed from ADR3 between 02:10:40 and 02:12:17.
Since the CAPT pitot and the F/O pitot are mounted in exactly identical symmetrically opposite positions on the forward fuselage, while the STBY pitot position is below the CAPT's and therefore in a slightly different airflow, I would expect ADR2 closer to ADR1 than to ADR3.