New Standard D-25
1929 aircraft
The New Standard D-25 was a five-seat agricultural and joy-riding aircraft produced in the US from 1928.
Development
Designed by Charles H. Day, the D-25 was developed from his four-passenger D-24 which was equipped with a 180 hp (134 kW) Hispano-Suiza E eight-cylinder radial engine and built in Paterson, New Jersey. This was underpowered, and production switched to a 220 hp (164 kW) Wright J-5 engine, the new model being renamed the D-25. It received its type certificate (No.108) in February 1929. The retail price was $9,750. Some of the existing D-24s were converted to D-25 specification, including one by its owner, famous barnstormer Johnny Miller.
Construction
The D-25 was constructed primarily from Duralumin and wood. Duralumin stringers were used for the fuselage, with duralumin sheets riveted onto them. Unlike the fuselage, the wings were mostly of wood, with a main spar made of spruce, basswood for the stringers, and plywood for reinforcement, along with fabric coverings for the wing area and control surfaces. The D series was quite distinctive in having sesquiplane wings with the upper wing, of much bigger span and chord, supported on tall cabane and interplane struts.
“New Standard D-25” enters the record as 1929 aircraft. Crown Archives preserves that source wording while asking what Standard, D-25 and aircraft can confirm, complicate or overturn.
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