Season 4, Episode 2: Snoopy Smart Versus the Red Baron

Another terrific episode with some great details.

This is the second of three straight episodes where a TWA jet is part of the episode. Here we can see that the TWA logo on the pillows has been colored over in post-production. However, the quality of the cover varies; the logo is still somewhat visible in some seats, most noticeably the Chief's. You can also see that the TWA logo has been taped over on the back wall.

While 99 and the Chief read prop publications, Max is of course reading an actual copy of Snoopy and the Red Baron. The book was published in 1966 and was an instant classic.

The interior paneling of the cabin has the distinct hot-air-balloon motif of TWA planes in the 1960s.

Here is a photo from a real plane where you can see the same design.

Note that the back wall TWA logo is perfectly visible in this shot.

Smokey Bear can be seen on one of the posters in the Department of Agriculture office.

The highlight of the episode is the aerial dogfight between Max and Siegfried. The planes were owned by legendary stunt pilot Frank Tallman, whose company Tallmantz Aviation provided historic aircraft for film and TV shoots. 

The "Fokker D.VII" that we see here is actually an American-made, Travel Air 2000-T from 1987. It was known as the "Wichita Fokker", and was often used as a German Fokker in movies including Hells Angels and Dawn Patrol. It was painted to match the real Fokker D.VII that is seen in the aerial combat stock footage. The paint scheme is meant to match the plane belonging to the Red Baron's contemporary Ernst Udet. In this 1994 photo, from when the plane was on display at the Blue Max Movie Museum in Wycombe, UK, the plane still had it's Get Smart paint job. As of 2014 it was in the PPS hangar in Wycombe. That hangar has since closed, and I could not find information on it's current whereabouts or paint scheme.

The plane in the haystack is a Garland-Lincoln LF-1. 

This is a replica WWI Nieuport 28 commissioned by pilot Garland Lincoln for film work in the early 1930s. It appeared in Dawn Patrol, Men With Wings, and episodes of Twilight Zone and My Three Sons. In the early 1970s, it was used for Snoopy publicity events. The plane crashed in 1974 during the filming of The Great Waldo Pepper. According to this Instagram post (which has a lot of great photos of the plane, including one of the wreckage), the wreckage was sold to it's former owner, Kip Monè. Kip's son Brent now owns the plane and as of the 2022 post was close to completing it's restoration.

According to this post on The Aerodrome Forum, the aerial footage was stock footage of Tallmantz's real Fokker D.VII battling the Garland-Lincoln.

It looks like the pilots are flying over sand dunes rather than the hills of Idaho (or California).

The shots never show the faces of the pilots.