This could be a specific Yearly Record Card or a clerical code used in personnel or maintenance archives.
Since "6 YRC RAF" can be interpreted in a few different ways, here is content broken down by the most likely meanings: 1. Royal Air Force (RAF) - 6 Squadron Search results for 6 yrc raf
In a military context, "6" often refers to of the Royal Air Force. Known as the "Flying Canopeners," they have a long history from WWI to modern Typhoon operations. This could be a specific Yearly Record Card
You might be looking for archival data, service records for a relative, or historical logs for No. 6 Squadron. 2. Vehicle or Part Identification Known as the "Flying Canopeners," they have a
If you are searching for a part for an aircraft or a specific vehicle used by the RAF, this string might appear on a surplus manifest or a digital catalog for vintage military hardware. 3. Archive/Library Coding