| A several letters of the manufacture and a several numbers (e.g. B747) | Started with a dash and then a combination of numbers (e.g. -200) | combination of letters (e.g. ER) |
In this table you can find extensions that Boeing is using for their aircraft
| Extension | Extension name | Description | Aircraft | Related to | Remarks |
|---|---|---|---|---|---|
| PAX | All the aircraft's without any extension are PAX aircraft's. PAX is a shortage of the word passenger that is traveling with the aircraft | 717-200, 727-100, 727-200 , 737-100, 737-200, 737-300 , 737-400, 737-500, 737-600, 737-700, 737-800, 737-900, 737-MAX7, 737-MAX8, 737-MAX9, 747-100 , 747-200 , 747-300, 747-400 , 757-200, 757-300, 767-200, 767-300, 777-200, 777-300, 777-8, 777-9, 787-3, 787-8, 787-9, 787-10 | PAX | ||
| ADV | Advanced | More powerful engines, increases in both fuel capacity and Maximum TakeOff Weight, and an increase in range by nearly 50%, combined with excellent economics and improved interior | 727-300 | PAX | |
| ADV F | Advanced Freighter | Freighter version powered by the Pratt & Whitney JT8D-17A engines and featured a strengthened fuselage structure, an 11 ft 2 inch by 7 ft 2 inch forward main deck freight door and a windowless cabin | 727-200F ADV | FREIGHT | |
| BCF | Boeing. Converted Freighters | A modified passenger-to-freighter model. It involved the addition of a main deck cargo door, strengthened main deck floor, and additional freight monitoring and safety equipment | 767-300BCF | FREIGHT | |
| C | Mixed Configuration | Combi aircraft is a combination of passenger aircraft and cargo with the latter third of the plane used for cargo. These aircraft typically serve routes that cannot sustain full passenger or full cargo service year round. | 727-100C, 727-200C | PAX/ FREIGHT | |
| D | Domestic | A commercial flight within civil aviation where the departure and the arrival take place in the same country | 747-400D | PAX | |
| ER | Extended Range | Higher Maximum TakeOff Weight and increased fuel capacity permits a maximum range of 7,370 nautical miles (13,650 km) with 396 passengers in a two-class seating arrangement | 737-700ER, 777-200ER, 777-300ER | PAX | |
| ERF | Extended Range Freighter | Freighter version with higher Maximum Takeoff Weight and increased fuel capacity permits a maximum range of 7,370 nautical miles (13,650 km) | 747-400ERF 737-300ERF | FREIGHT | |
| F | Freighter | Freighter is the all-cargo transport variant of the PAX version* | 707F, 727-100F, 727-200F, 737-200F, 737-300F, 737,400F, 747-100F, 747-200F, 747-400F, 757F, 767-200F, 767-300F | FREIGHT | * Cargo can be loaded via de nose door |
| LCF | Large Cargo Freighter | Cargo is placed in the aircraft by the world's longest cargo loader. It is an extensively modified Boeing 747-400 that is used exclusively for transporting | 747-400LCF | FREIGHT | |
| LR | Long Range | having a maximum range of 9,500 nautical miles (17,600 km). The -200LR is intended for ultra-long-haul routes | 777-200LR | PAX | |
| M | Combi | Convertible passenger cargo version. Additional freight door and strengthened floor and floor beams | 707M , 727M, 737M, 737-300M, 737-400M, 737-700M, 747M, 747-200M, 747-300M, 747-400M, 757-200M | PAX/ FREIGHT | |
| PF | Package Freighter | Targeted at the overnight package delivery market, | 757-200F | FREIGHT | |
| QC | Quick Change | This is similar to the Convertible version with a roller-bearing floor for palletised galley and seating and/or cargo to allow much faster changeover time (30 minutes). | 727-100QC | FREIGHT | |
| QF | Quiet Freighter | A cargo conversion for United Parcel Service, re-engined with Stage III-compliant Rolls-Royce Tay turbofans. | 727-100QF | FREIGHT | |
| SF | Swing Tail Freighter | The swingtail gives the possibility to load cargo via the rear wing of the aircraft | 727-200SF, 747-400SF, 757-200SF | FREIGHT | |
| SP | Special Performance | High-capacity airliner with enough range to cover long distance routes. The 747SP is 48 feet 4 inches (14.73 m) shorter than the 747-100 | 747SP | PAX | |
| SR | Short Range | A short-range version of the 747-100 with lower fuel capacity and greater payload capability. With increased economy class seating, up to 498 passengers could be carried in early versions and up to 550 in later models | 747SR | PAX | |
| SRF | Short Range Freighter | A short-range freighter version of the 747-100 with lower fuel capacity and greater payload capability. With increased economy class seating, up to 498 passengers could be carried in early versions and up to 550 in later models | 747SRF | FREIGHT | |
| SUD | Stretched Upper Deck | A stretched upper deck, increased cruise speed, and increased seating capacity | 747-200SUD | PAX | |
| W | Winglets | The winglets stand approximately 8 feet (2.4 m) tall and are installed at the wing tips. They help to reduce fuel burn (by reducing vortex drag), engine wear, and takeoff noise. Overall fuel efficiency improvement is up to five percent through the reduction of lift-induced drag. | 727-200W, 737-300W, 737-500W, 737-700W, 737-800W, 737-900W, 757-300W, 767-300W | PAX |