Demonstration of Flygindustri (Junkers) seaplanes for the Netherlands navy. S-505 was a K30, a variant of the G24 airliner. S-AABB would crash into the seaplane station due to wing failure, damaging the Van Berkel W-A W54. The Flygindustri pilot, Lindner, was injured. Durgerdam village is in the background. Photo from: Nationaal Archief (Netherlands)

One of 27 frames that were built for the US Navy. The FB-5 was the successor of the FB-1 and first flew on October 7, 1926. It featured a stronger engine, increased positive wing stagger and an aerodynamically balanced rudder with increased area (the latter not in the first frame however). 27 frames were produced, A-7101 to A-7127. Photo from Boeing

Demonstration in Amsterdam of the military variant of the Junkers G24 airliner, which could be operated as a seaplane. Because of the restrictions imposed on Germany, the K30 was officially a product of Junkers' Swedish subsidiary, Flygindustri. Photo from: Nationaal Archief (Netherlands)

Amazing picture of two Swedish Junkers seaplanes demonstrating in Amsterdam. S-505 (a temporary civil registration) was the German-built prototype of the K30 military version - sometimes called R42 in Sweden - of the G24 airliner. S-AABB was an R53 or K53, a Junkers A35 assembled by Junkers subsidiary AB Flygindustri. S-AABB would crash into the seaplane station due to wing failure, damaging the Dutch navy's Van Berkel W-A W54 which is also seen here. The photo gives a good idea of the location of the station on the east side of Amsterdam, actually opposite Schellingwoude village. The church of Durgerdam can be seen. Photo from: Amsterdam City Archives