First the background. In the mid 1960’s a lorry load of Shackleton instrument panels appeared on an industrial site in the West Midlands. Apparently the firm was going to try and extract precious metals from the instruments. I looked the pile over and there were things I would dearly like to have had but they were not available. Obviously there were instruments, but there were also some control columns. However, I did acquire the item illustrated. It is an ASI calibration card which resided in a holder near the relevant instrument. It measures one and three quarter by two inches.
The question is what is the meaning of “Serial No 113/49” on the back? The 113 doesn’t seem to fit anything I am aware of. If the 49 refers to the aircraft date of manufacture that would make it one of the first two prototypes.
Can anyone clarify this at all?
By: garryrussell - 23rd May 2012 at 17:10
113th made in 1949 seems likely, simple codes like that were often used in those days
By: HP111 - 23rd May 2012 at 16:10
Hi
It’s the serial number of the ASI instrument fitted in the pilots position on the panel.
49 is often the date of manufacture of the instrument.Pete
That makes perfect sense, thank you.
By: MerlinPete - 23rd May 2012 at 10:07
Hi
It’s the serial number of the ASI instrument fitted in the pilots position on the panel.
49 is often the date of manufacture of the instrument.
Pete
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May 23, 2012 at 9:41 am