It is near position 44, when I can post a picture you will be able to see what I mean. I have no evidence that they were not plated over from new. It would be a strange thing to do, the Decca hole son the left side are sometimes plated over so I just assumed that they served some purpose.

https://cimg6.ibsrv.net/gimg/pprune....176c1a650d.jpg
https://cimg3.ibsrv.net/gimg/pprune....6f43b0ab9b.jpg
et voila, now that I have wittered on for 10 posts maybe this will work
Hurrah! The top image shows my HU5 panel with Decca, I hope to do something suitably retro for the right hand side. The lower image shows a right hand side with no blanking plates so I am interested in the contents of the rightmost column of three holes.

Smirky, I've asked one of the guys at HH to send me a picture of the cockpit - I'll post it when he does.

Thanks very much

Remembering the back story of the HU5 it is entirely possible that the unpopylated instrument panel shares a part number as far back even as the S58 from which the HAS1, HAS 3 and others were derived. If so the holes may have been populated on earlier marks, but not needed on the Mk5. It would be cheaper, and better logistics in service, to produce common panels and populate the unused holes with blanking plates at aircraft production. A look at HAS 1, 3 and 5 panel part numbers in the Topic 3's might be illuminating. Similarly, if the hole fillers were wired there will be details in the wiring diagrams, Topic 10.

Thus opening 20 might indeed have been a cable out indicator on the 1 and/ or the 3 but was not needed for the 5, so was always fitted with a blank.

Some HU 5 didn’t have the empty sonar bay, so they had a great big uncomfortable box in the Fwd left cabin to sit on, that housed the junk that would have been in the bay if I remember correctly.

AKA the C,G and A box. Contained Compass, Gryos and ASE IIRC.

N

See


https://cimg0.ibsrv.net/gimg/pprune....ed4ef4b0b.jpeg


https://www.jetphotos.com/photo/8308034


https://cimg3.ibsrv.net/gimg/pprune....27554f055.jpeg

https://cimg7.ibsrv.net/gimg/pprune....e12005772.jpeg



http://www.thermofluids.co.uk/news_xt466.php

No, the 1, 3 and 5 panels are completely different and furthermore the HAS3 panels had three demountable sections whereas the others were fixed. Thinking about documents, maybe the list of mods is the thing to find.

Seeing those photos has made come over all unnecessary....

Nutloose, thanks for posting. The first picture is XS511 where you can just about see the usual arrangement with the small ammeter and the blanking plates. Very unusual thing bolted over the clock hole !

The others are XT761 at HH and the bottom picture shows the area of interest with two large "ammeters" and something in the small hole at the bottom that is hard to see. If you compare with post 22 (lower), you can just about see that the cutout at 8 o'clock in the top hole has been blanked,

Try

Oo yes, I can't see the link here but it is visible in your posting history. The "ammeters" do not move so maybe they are temperature, the small hole at the bottom has been blanked off on the back. This aircraft was used for ground instruction mind.

To see hidden links use the quote and it will show :)

It wouldn’t be a rad alt?

More like a blank plate in these images, but I can’t remember what it would be otherwise 🤔


https://cimg8.ibsrv.net/gimg/pprune....16323fbb4.jpeg
https://cimg9.ibsrv.net/gimg/pprune....55dba6cf1.jpeg

some about rad alts

https://www.pprune.org/rotorheads/12...o-fond-29.html


what about the P1 instrument dimmer?

Great, that's nailed the ammeters, which aircraft is this? You can see the filled in cutout bottom left of the top ammeter hole but not the bottom one. (Also the centre Plastek doe not have the holes for the Fuel Transfer Warning dollseyes below the clock.)

I wonder if previously it had something like an altimeter in that position like this, the blanked off cutout next to the top ammeter would make sense then, see

https://www.alamy.com/a-kollsman-typ...entation=0&pn=


https://cimg8.ibsrv.net/gimg/pprune....b0cf8f6c4f.jpg

Maybe but it does have two other altimeters. What about a Hovermeter like the American one on the HAS1 which has a switch in that postion?

https://cimg4.ibsrv.net/gimg/pprune....cdb8ac8956.jpg
XS887