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Removable Nose Window: Can anyone elaborate on the purpose of the removable nose window on AGO and AGX? Presumably it was used for oblique photography? Undated photos of AGO imply that the aeroplane may not have had this facility originally but was later retrofitted. AGX appears to have retained the facility for its entire service.
Magnetometer Boom: Answered see Hudson Magnetometer Boom
AGP Camera Position: Photos would imply that AGP retained its rear camera position for its entire service, the only Adastra Hudson to retain this feature. Can anyone confirm? If so, was there a particular reason?
The “Hat”: Answered see Aerodist
Pitot Heads: It would appear that all Hudsons with forward camera positions had their pitot heads relocated topside. Presumably this was to remove the pitot from the camera’s field of view? Later the pitots were duplicated. My earliest photo of a Hudson with dual pitots is 1963. When was the first dual pitot installation and what was the reason?
Pitot Heads VH-AGP: Total confusion here! When Adastra received the aeroplane from John Fairfax (as VH-SMO) it had two pitots below the nose. Later it was photographed with 1 up and 1 down which Rick Geary attributes to a DCA study of pitot position error as a result of the investigation into the crash of AGE at Tennant Creek on 24SEP66. By 1970 it was photographed with 2 up and 1 down. After the aeroplane was withdrawn from service at Tamworth it was photographed with no pitots up or down! (This is not so significant, given that the aeroplane had been WFS. See also AGJ below). Can anyone throw any light on this?
Pitot Heads VH-AGJ: AGJ was photographed at Mascot after having been WFS and it had its topside pitots reduced from 2 to 1. This aeroplane is currently on display at the RAF Museum at Hendon in the U.K., basically still in its survey configuration but with just 1 pitot topside. Can anyone throw any light on this?

Undercarriage Leg Fairings: Early aircraft carried these fairings but they were evidently soon removed. Presumably for ease of maintenance?


Tail Colours: The early Hudsons had their tail groups painted grey. This was subsequently changed to white. Any particular reason for this? Certainly it would not have assisted keeping them clean!


Green Camouflage?: It has been suggested that Adastra chose that shade of green to hide fuel leaks on the wing. True or false? Did that shade of green have a particular name?


Favourite Hudson: Did Adastra staff have their favourites and why?


VH-SMO/AGP: This aeroplane never carried “Adastra Aerial Surveys” titles until it was painted in the orange scheme. Is there any particular reason for this? Its sister-ship SMM apparently carried Adastra titles from the outset.

Answers to: ron@adastron.com