

The Piper M350 is an improved version of the Malibu Mirage, with the same wings but new avionics, electronic stability protection, stall prevention, and other improvements. The M350 was debuted in 2015 when Piper released the new M-Class aircraft based on the former PA-46 Malibu family.

Tail end Charlies are the AA5, C172/152 and finally the C150 which are 41 and 38 inches wide.According to Piper, the M350 is the only pressurized aircraft in its class. The narrow bodies are lead by Mooney, followed by the large Cessnas (210/206) and then by the Bonanza, Cessna 182 and Piper Cherokee/Arrow with 43.5 to 42 inches, again with a very small margin of 4 cm. So basically, we have two “cathegories” so to speak, the “wide bodies” between 50 and 48 inches which include the TB series, Cirrus, Corvalis and the 6 seated Malibus and Saratoga. Also on the top end, the Socata series beats all the rest, however within very small margins. Especcially Cessna’s singles had me fooled, I thought them to be wider than both the PA28 and certainly the Mooney. I must say I was fairly surprised by some of these figures. According to specs the cabin is 50.3 inches / 128 cm wide. The widest single engine cabin are found: In the TB9/10/20/21. Next are the Malibu with 49.6 inches / 126 cm followed closely by the Cirrus SR20/22 with 49 inches/125 cm. Next in the close ball park is the Piper Saratoga/Seneca cabin with 48.25 inches and the Corvalis with 48 inches/122 cm. The Mooney cabin is 43.5 inches/110 cm wide. The Cessna 182, PA28 and Bonanzas have 42 inch/107 cm cabin widths The Grumman AA5 is 41 inches / 104 cm wide.

The Cessna 172 and 152 according to Cessna’s website is 40 inches / 102 cm wide. The Cessna 150 is the tightest with 38 inches/96 cm. What I found very interesting is that some cabins which are said to be spacy are in fact narrower than others which are said to be tiny. That is a full 12 inches / 30 cm difference between the smallest and the widest cabin. The range of cabin sizes in the SE piston market is between 38 and 50 inches. So I went and researched them to add another sheet to my Excel Database So here’s what I found in a quick research: Ok, this is a split off from the engine thread, where some folks started to compare cabin widths.
