North atlantic track with Blackbox A330

[datoabesa]

Hello. I'm using Blackbox A330-300 with updated AIRAC. It's my first flight across Atlantic. Route that I get is EDDF SID BIBTI UZ29 NIK UL610 LAM UL179 CPT UL9 DIKAS UP4 EVRIN DCT LIMRI NATB TUDEP N439A EBONY J573 ENE STAR KJFK . I know how to program FMC, but I got stuck on entering airway "NATB". I found that I shoud enter coordinates instead of "NATB" and they are 53N020W-53N030W-53N040W-52N050W. When I enter this coordinates they aren't in database and how to enter them correctly?

[rishabk97]

Try maybe like N53W020.