737-800 specifications, by source
Boeing’s live product pages, its airport planning manual and EASA’s data sheet, side by side, with the date we checked the ones that can change.
Boeing’s current figures
From the airport planning manual
The same manual describes the -800 as a slightly longer fuselage than the 737-400, with a new wing, stabiliser and tail, 129 ft 6 in long and carrying up to 184 passengers all-economy. Boeing: Next-Generation 737 Airplane Characteristics for Airport Planning, D6-58325-7 Rev C (Oct 2025, PDF) The 737 family was designed for short to medium ranges from sea-level runways of less than 6,000 ft (1,830 m). Boeing: Next-Generation 737 Airplane Characteristics for Airport Planning, D6-58325-7 Rev C (Oct 2025, PDF)
From the type certificate
EASA’s type certificate data sheet lists maximum certified masses of 79,015 kg (174,200 lb) for take-off and 66,360 kg (146,300 lb) for landing. EASA: Type-Certificate Data Sheet IM.A.120, Boeing 737, Issue 30 (PDF) Minimum flight crew: two, a pilot and co-pilot. EASA: Type-Certificate Data Sheet IM.A.120, Boeing 737, Issue 30 (PDF)
The main forward left door measures 864 × 1,829 mm (34 × 72 in); each overwing exit is 508 × 914 mm (20 × 36 in). EASA: Type-Certificate Data Sheet IM.A.120, Boeing 737, Issue 30 (PDF)
The CFM56-7B
CFM International says the CFM56-7B is the exclusive engine for the Next-Generation 737 and its military variants. CFM International: CFM56-5B & CFM56-7B CFM International is a 50/50 joint company of Safran Aircraft Engines and GE Aerospace. CFM International: CFM56-5B & CFM56-7B
The CFM56-7B came in six take-off ratings, from 19,500 lb (the -7B18) to 27,300 lb (the -7B27), all with a 61 in fan. CFM: The technology behind the CFM56-7B (archived 29 Feb 2012) CFM listed the -7B22, -7B24, -7B26 and -7B27 ratings for the 737-800. CFM: The technology behind the CFM56-7B (archived 29 Feb 2012)
Each engine is 98.7 in long with a basic dry weight of 5,216 lb. CFM: The technology behind the CFM56-7B (archived 29 Feb 2012) In 1997 Boeing said the CFM56-7 would have 10% more thrust capability than the CFM56-3C on the earlier 737s. Boeing news release: Longest Boeing 737 makes first flight (31 Jul 1997)
CFM says more than 15,000 CFM56-7B engines have been delivered to power 737s, with more than 500 million engine flight hours logged. CFM International: CFM56-5B & CFM56-7B · checked 29 Oct 2026
On the ground
Underwing engines put nearly all system maintenance at eye level. Boeing: Next-Generation 737 Airplane Characteristics for Airport Planning, D6-58325-7 Rev C (Oct 2025, PDF) An auxiliary power unit (APU) in the tail can supply power for engine starting, air conditioning and electrics on the ground or in flight. Boeing: Next-Generation 737 Airplane Characteristics for Airport Planning, D6-58325-7 Rev C (Oct 2025, PDF)
Optional built-in airstairs let it work at airports with no air bridges or steps. Boeing: Next-Generation 737 Airplane Characteristics for Airport Planning, D6-58325-7 Rev C (Oct 2025, PDF)
737-800 figures depend on the options an aircraft was built with, the seating layout an operator chose and the document you read. Boeing’s own product page, its airport planning manual and its older news releases don’t always give the same number. Each figure on this site links to who said it, and figures from live web pages show the date we checked them. See when sources disagree for every difference side by side.
These are published, general figures for interest. They are not for flight planning, loading or any operational use.
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