Hi good morning,,, greetings and congrautlations,,, In this hard conditions with snow,,, cold, fog, rain,,, realy amazing the Hability,, experience, of the Great PILOTS,,, thanks of share your video have a good time and Happy Cristmas, and happy NEW Year 2023,,, your friend Oscar de Playa del Carmen Q R México,,,
Those are test tail numbers prior to delivery. During pre-delivery test flights, quite often they didn't use the customer's registration yet so they put a temporary tail number with white background on it.
