Wiggi Posted April 27, 2020 Share Posted April 27, 2020 Dear all, actually I'm building a RA-5C Vigilante. My project will resemble a RVAH-11 aircraft, Vietnam War, between October 1971 and June 1972. When the RA-5C entered service it was equipped with an head up display called Projected Display Indicator (PDI). During her career this PDI has been removed by AFC 233. Unfortunately I wasn't able to find out in which time frame these removal has been carried out. Pictures I found were not conclusive. Maybe some has more detailed information and might share them. Many thanks in advance! Look after yourself and all the best Wiggi Quote Link to post Share on other sites
Quixote74 Posted April 29, 2020 Share Posted April 29, 2020 You may have the key to answering your question in the information you already posted. "AFC 233" is a technical document issued by the governing authority to direct all operating units to implement the technical revisions it describes (AFC = AirFrame Change). If you know that AFC number was the one that removed the PDIs, confirming when it was issued will tell you at least a "start date" for the change. Depending on their urgency and various other factors, an AFC may take years to be adopted fleetwide, so you probably won't be able to know exactly when the last PDIs were removed. Quote Link to post Share on other sites
Finn Posted April 29, 2020 Share Posted April 29, 2020 According to the 1976 RA-5C Flight Manual AFC 233 was Urgent. Here is the pilot's cockpit with that, and other changes: Jari Quote Link to post Share on other sites
Wiggi Posted December 23, 2020 Author Share Posted December 23, 2020 Hi guys, thanks alot for your help and please excuse my late reply! Finally I decided to use the head up display even it is doubtful that it was still in use around the time frame. The reason was because it looks quite nice and the etched would have needed some rework to be correct. You can find some more information in this thread: Very best regards, Sven Quote Link to post Share on other sites
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