Douglas DC-9-40
The Douglas DC-9-40 is a further-stretched version of the DC-9 family, extending the fuselage beyond the popular -30 for additional passenger capacity. Scandinavian carrier SAS was among its most significant customers, using it extensively across Scandinavia's regional route network. Its extra length required minor structural and systems changes over the shorter DC-9 variants to keep performance and handling consistent. It represented a step on the path toward the even longer -50 and the later MD-80 family.

Did you know?
The stretched DC-9-40 became a favourite of Scandinavian carrier SAS, flying extensively across its regional route network.
Specifications
| Length | 38.3 m (126 ft) |
|---|---|
| Wingspan | 28.5 m (93 ft) |
| Height | 8.5 m (28 ft) |
| Maximum passengers | 125 |
| Persons on board | 110-125 |
| Maximum take-off weight | 54.8 t |
| Range | 1,560 NM (2,889 km) |
| Maximum speed | 490 kt (907 km/h) |
| Service ceiling | 37,000 ft (11,278 m) |
| Optimum ceiling | 33,000 ft (10,058 m) |
| Rate of climb | 3,000 ft/min (15.2 m/s) |
| Take-off distance | 1,686 m (5,531 ft) |
| Fuel capacity | 13,900 l |
| Engines | 2x Pratt & Whitney JT8D-11 |
| Units built | 71 |
Curated by CatchFlights from manufacturer documents, ICAO Doc 8643 and reference works; values are left out where no source could confirm them. Sources are listed on our credits page.
In CatchFlights
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