Originally Posted by
Flyertall
No. And I looked it up just now to make sure.
The MD88 and MD90 planes are much longer, up to 23 feet longer in the case of the MD90, which seats 172 passengers in some cases. By contrast, the 717-200 only seats 117 (105 coach + 12 first class) passengers, and is a significantly smaller and lighter aircraft.
The 717-200 is a McDonnell Douglass design, based on the smaller version of the original (smaller)DC-9-30, but with newer avionics and fly by wire gizmos. By contrast, he MD88/90 planes were based on the larger DC-9-90.
There is no such thing as a DC9-90. It was always an MD90. The MD80, MD90, and 717 are all derivatives of the DC-9. However, they have different fuselage lengths and different engines. The MD80s have the P&W JT8D engine. The MD90s have IAE V2500 engines, which are bigger, more powerful, and quieter than the JT8D. The 717 has the Rolls-Royce BR700 engine. But, the interior for all these planes are all the same. The all have bins that are narrower on the 2 seat side and can take a roller bag lengthwise on the 3 seat side. The CRJ-900 have tiny bins that don't fit all roller bags in any configuration.