Copa Airlines hex code mix up HP-9902CMP & HP-9903CMP explained

I see there is much confusion on a number of aviation forums about the hex code situation with the second and third Copa Max 9 frames.  This post will hopefully explain what happened.

Timeline :

HP-9902CMP & HP-1856CMP :

Oct 25 : 0C20DD HP-9902CMP first flight as BOE052 (same hex as HP-1856CMP).

Oct 31 : 0C20DD HP-9902CMP 2nd flight as BOE052 (same hex as HP-1856CMP).

Nov 1 : HP-9902CMP recoded transponders from 0C20DD to 0C20D5 at BFI.

Nov 2 : 0C20D5 HP-9902CMP delivery flight to PTY and SJO as CMP9902.

Nov 8 : HP-1856CMP recoded transponders from 0C20DD to 0C20D5 after arrival at BOG late evening as RPB659.

Nov 9 : 0C20D5 HP-1856CMP in service from BOG as RPB658.

Nov 18 : HP-9902CMP recoded transponders from 0C20D5 back to OC20DD at SJO.  HP-9902CMP is still at SJO and not yet entered service as of Nov 22.


HP-9903CMP & HP-1857CMP :

Oct 16 : 0C20DE HP-9903CMP first flight as BOE053 (same hex as HP-1857CMP).

Oct 27 : 0C20DE HP-9903CMP 2nd flight as BOE053 (same hex as HP-1857CMP).

Oct 30 : HP-9903CMP recoded transponders from 0C20DE to 0C20D6 at BFI.

Oct 31 : 0C20D6 HP-9903CMP delivery flight to SAL as CMP9903.

Nov 7 : HP-1857CMP recoded transponders from 0C20DE to 0C20D6 after arrival at PTY from SDQ as CMP107.

Nov 7 : 0C20D6 HP-1857CMP in service PTY-SDQ as CMP108 late evening.

Nov 12 : HP-9903CMP recoded transponders from 0C20D6 back to 0C20DE at SAL.

Nov 14 : 0C20DE HP-9903CMP first revenue service PTY to LAX as CMP472.


In summary :

HP-9902CMP 0C20DD > 0C20D5 > 0C20DD current.
HP-9903CMP 0C20DE > 0C20D6 > 0C20DE current.
HP-1856CMP 0C20DD > 0C20D5 current.
HP-1857CMP 0C20DE > 0C20D6 current.

Copa Airlines 737-9 HP-9902CMP delivery flight

Copa Airlines 737-9 HP-9902CMP msn 44162/7196 flew away on delivery Nov 2, BFI to Panama City flying as CMP9902.  Hex code 0C20D5.  All prior flights used OC20DD in error - this code is already allocated and in use by HP-1856CMP.