🎬 BOEING B737 MAX ATA 00 External walk around and differences from B737. ✈️

[@AVIATIONSOUNDEXPERT]

Hello,
1) Recently I saw a message on the Nav Display and PFD of a 787-9.
The message was "SURF" in amber color.
Do you know what it means?
Never saw that before.
2)
What does the TCAS status, "TFC-ALL" on the Nav Display mean?
I know that you have TCAS Normal, Below and Above scan.
In my example, even when the pilots selected Below, the information
TFC-ALL remained.
Do you know the answer?
Thanks.