aircraft round part Air Ministry code 5A/1152

[Gildas]

Hello to all,
Would anyone know to which type of aircraft could be fitted a round electrical aluminum removal part of around 15 cm (outside diameter) and 10 cm (inside diameter) coded 5A/1152.
This was found yeras ago near Guipavas, France, Brittany.

Thanks in advance, have a good spring
Gildas

[Sean Welch]

A.M. 5A codes relate to "Ground Lighting and Miscellaneous Equipment" so this would not appear to be onboard equipment.
The only A.M.codes that can be directly linked to aircraft type are those in the AM 26 range, for example, AM 26AC is Blenheim.

[David Duxbury]

Note that the Air Ministry of the time simply referred to these as (Stores) Section Reference Numbers, they were not meant to hide or obscure information, they were supposed to make it easier for people working in the system to locate and accurately identify items they were looking for, or seeking to re-order! In other words they were specifically not codes, although others outside they system presume they are. Somewhat similar systems are still in use to this day in all militaries, and are usually familiar to manufacturers of said items, even if they have their own parts numbering system. Everybody working within the system would have full access to all relevant catalogues (or Vocabs as they were often known).

[Gildas]

Many thanks to both of you. I'm afraid this will stay as a very strange thing, a british ground lightning near Guipavas airfield... Several planes crashed around that place, even a Lancaster (EE183) that burnt there on 13 July 1943 after an emergency landing (the place would be under today's terminal). That little bent piece, just 500 m further south, years ago.
Thanks again !

[Argus]

Hello Gildas,

The number 5A/1152 refers to a red cover glass of an Aldis signalling lamp (Stores Ref. 5a/760).

Intended for signalling between aircraft, with either one or both in flight and also ground signalling purposes.

Ref.: AP 1186 Volume II.

See 4 attached pages from the manual.

https://i.ibb.co/djfN8mr/Aldis-1.jpg

https://i.ibb.co/NrnyhDD/Aldis-2.jpg

https://i.ibb.co/y4bQ7Hs/Aldis-3.jpg

https://i.ibb.co/kMLkF4S/Aldis-4.jpg


Best regards

Finn Buch

[Gildas]

Many thanks Finn, you found it, and as a part that could be brought on board, it may come from one of the planes that flew over Guipavas airfield, and maybe without being shot down, a part that can have just fallen.
On the picture it is the front part that hold the glass.
Much appreciated, thank you !