Old King Display Replacement

[65eTurbo]

Hi all.  I'm recommissioning my Mooney, and planning on keeping the 90s era avionics, but with a lynx 9000 in place of the transponder.  That said, the display on my dme has seen better days.  Anyone know a good source for display cover replacement/refurbishing? See attached.

[carusoam]

DME is going away (in popularity).  It is being replaced quite handily using GPS... (even though they measure slant range)

The FAA has some specific wording somewhere... explaining why it is legal to use GPS distance when charts are still in Slant range?

BK has made it quite difficult to get parts for displays, but so many used ones are becoming available...

PP thoughts only, not an instrument guy...

Best regards,

-a-

[Culver LFA]

https://www.ebay.com/itm/GRAY-Faceplate-KN62-KN62A-lens-display-KN64-kn-62-64-USA-Made-/251981036205?nav=SEARCH

or 

https://www.ebay.com/itm/Faceplate-VHF-KN62-KN62A-lens-display-KN64-made-in-the-USA-/263328327587?nav=SEARCH

[carusoam]

[Culver LFA]

@65eTurbo Does the dme display work or do you just need a lens?

[65eTurbo]

Good point that dme is obsolete.  I think it is just the lens. If not, I'll placard inop and ignore. 

[Culver LFA]

8 minutes ago, 65eTurbo said:

Good point that dme is obsolete.  I think it is just the lens. If not, I'll placard inop and ignore. 

Shoot, obsolete....I’d be happy to have a dme in my airplane!

[Immelman]

Ebay is your friend. If its just the lens and its trashed.. perhaps some time experimenting with a micromesh kit?

[N201MKTurbo]

Somebody out there makes aftermarket lenses.

[jaylw314]

I got a KN64 lens from these guys. $67.50.  I asked my mechanic if he'd be willing to sign off on it, and he just rolled his eyes and told me to put it in and don't tell him. 

[jaylw314]

On ‎1‎/‎26‎/‎2019 at 1:34 PM, 65eTurbo said:

Hi all.  I'm recommissioning my Mooney, and planning on keeping the 90s era avionics, but with a lynx 9000 in place of the transponder.  That said, the display on my dme has seen better days.  Anyone know a good source for display cover replacement/refurbishing? See attached.

 

I should point out that your KN64 lens looks like mine did, so the lens will probably come out as two separate layers that have delaminated.  At least, I'm assuming they were originally one piece.  But don't freak out when you remove two pieces of plastic, but only get one in the mail

[LANCECASPER]

On 1/26/2019 at 7:58 PM, 65eTurbo said:

Good point that dme is obsolete.  I think it is just the lens. If not, I'll placard inop and ignore. 

If it works it is not obsolete. 

[jaylw314]

On ‎1‎/‎26‎/‎2019 at 1:39 PM, carusoam said:

DME is going away (in popularity).  It is being replaced quite handily using GPS... (even though they measure slant range)

The FAA has some specific wording somewhere... explaining why it is legal to use GPS distance when charts are still in Slant range?

Slant range is only appreciably different within very close range of the station.  if you're 5 nm away and 1 nm up (6,000' AGL) your error is only 4%.

Especially on approaches where altitudes tend to be low, it's still gonna be good enough for government work .

[steingar]

I bet you could get a working DME for the price of the screen.  BK parts are in short supply and high demand.  Boy did they ever drop the ball.  I agree with Lacecasper, if it ain't broke it ain't obsolete.  Should be able to use it to do something.  A pity it doesn't bring in ball games.

[65eTurbo]

Thanks all.  I'll report back with what I wind up doing with it.

Unfortunately, it looks like I'll only be able to stretch my GX60 until the end of 2021, as data updates will be discontinued 12/2020.  At that point, no legal GPS and no DME will force me to do something to file /G and shoot DME approaches.