Iloilo-Negros Air Express Co (INAEC) operated this Sikorsky S-43 NPC-31 on scheduled service from Iloilo and Bacolod to Davao. Seen here at Catitipan Airport, Davao City in early 1941, it was destroyed during a Japanese bombing raid on its home base at Iloilo on 18.12.41.

Самолёты на фотографии: Aircrafts on the photo: Sikorsky S-43 Baby Clipper/JRS/Y1OA-8 - СШАUSA - 1936

A close-up of the nose of the S-43 NPC-31 showing the INAEC insignia

Самолёты на фотографии: Aircrafts on the photo: Sikorsky S-43 Baby Clipper/JRS/Y1OA-8 - СШАUSA - 1936

Bellanca Aircruiser 66-75 NPC-41, at Catitipan Airport, was operated by Elizalde Mines to transport heavy equipment. C/n 721, it was cream with red trim and was sold in 4.41 as CF-BTW

Самолёты на фотографии: Aircrafts on the photo: Bellanca Model P Airbus / 66 Aircruiser - СШАUSA - 1930

Самолёты на фотографии: Aircrafts on the photo: Bellanca Model P Airbus / 66 Aircruiser - СШАUSA - 1930

The Aircruiser NPC-41 at Maraut strip.

Самолёты на фотографии: Aircrafts on the photo: Bellanca Model P Airbus / 66 Aircruiser - СШАUSA - 1930

Alfred Vellguth with the Aircruiser

Самолёты на фотографии: Aircrafts on the photo: Bellanca Model P Airbus / 66 Aircruiser - СШАUSA - 1930

Waco NPC-19 (sub-type unknown) at the 1200 ft Maraut strip of Elizalde Mines.
Photo 7 may show Waco EQC-6 c/n 4498 (Wright R760-E2 engine) which went to Philippine Air Taxi in early 1937.

Самолёты на фотографии: Aircrafts on the photo: WACO C / S Series - СШАUSA - 1931

Another view of the Waco NPC-19 with light tone fuselage and different engine or cowlings. It was written-off at Catitipan when it hit a heavy roller on take-off on 5.5.40, killing pilot Kermit Eddy.
Photo 8 appears to be a different type despite the regn. It may be a model UKC (Continental R610) of which c/ns 3844, 3845 and 3846 were all supplied to PATCo in 1934.

Самолёты на фотографии: Aircrafts on the photo: WACO C / S Series - СШАUSA - 1931