Smallest plane for me was a 10-passenger, twin-engined turboprop Beechcraft. Although, the smallest aircraft I've ever flown in was the 2-seat helicopter for my 50th b-day. A gift from the family. It was October, but, it was still warm enough to have the doors off. That was my funnest aircraft ride ever, by far, so far.
Largest plane was a DC-10.
The funnest plane was definitely the Beechcraft!
It was owned by the Marvin window company in Warroad, Minesota. Back in the mid-80's, myself, a coupla' co-workers, and some home builders took a trip there to tour their operations and factory. First leg of the trip was American Airlines to Minneapolis, and then Marvins' company plane to Warroad, 5 miles south of the Canadian border. There were only 2 major employers in town...Marvin Windows, and Christian Brothers Hockey Sticks. Marvin was much larger.
Anyhoo, on the way back I got to fly in the copilot seat...Heaven...!
Sooo cool up there!
But, at one point I noticed an oil pressure gauge for engine number 2 kinda' hoppin' around...
I glanced at it several times for a few minutes, until I finally inquired about it to the pilot. He chuckled for a second, and said "Good catch! Most don't pay attention to the gauges!", and then reassured me that all had been tested, and it was just a faulty gauge, that would be replaced as soon as he flew back to Warroad...!!!
The coolest part of that flight was the approach and landing back in Minneapolis. It was amazing from that vantage point!
Also, the pilot said that a perfect landing touchdown is when the stall warning goes off a split second before the main gear touches the runway.
Sure enough, a split second before the main gear touched down, the stall warning went off. Show off.
All such a very cool, memorable experience...!