Fokker F. VIIb-3M PK-AFB of Netherlands East Indies Airline KNILM, photographed at Surabaya’s Dermo Airport in October 1935. It was leased with crew to the Timor air service in 1940. Reports that it received the Portuguese registration CR-AFB have not been confirmed.

Grumman G-21 Goose PK-AFS was shot down over Timor on January 26, 1942. The temporary NX registration was used during test flights at Grumman’s factory in Bethpage, Long Island, New York. Applied using adhesive tape, the NX callsign on the fuselage side has lost part of its “X” in the slipstream.