Boeing has been moving towards dropping its long standing tradition of using customer codes as part of the official aircraft designation, which has been introduced with the 707.
However with the introduction of the Boeing 787-8 Dreamliner, which was first Boeing type to drop the customer codes, Boeing has been moving towards a simpler method of officially designating its aircraft.
Now a new method has been adopted by the manufacturer and is being carried forward with all new aircraft including the upcoming Boeing 737 MAX.
According to the Puget Sound – Boeing Test Flights blog:
Boeing will no longer use customer codes on the 737, 747, 767, 777 lines bringing them in alignment with the 737 MAX and 787 lines. These changes have already been made on the FAA Certificates. The changes are effective with the following Line numbers for each respective Production Line.
The aircraft to not feature a customer code in their official designation will start from:
- B737 Line Number 6082,
- B747 Line Number 1534,
- B767 Line Number 1102,
- B777 Line Number 1422.