This is a table of 1962 United States Tri-Service aircraft designation system with selected letter sequences and number. Two previous USAF/AAF/AAC number series are included due to their impact and partial incorporation into the tri-service system (A, B, C, F and O reset to one, but # carryover existed). * Note: KC-767 was allocated out of sequence for Boeing 767 tanker derivative (not KC-46 Pegasus) and is not included in list due to hundreds of C-series design numbers being skipped.