DME died - do NOT recommend GPS

Discussion in 'Avionics and Upgrades' started by murphey, Jan 23, 2021.

  1. murphey

    murphey Touchdown! Greaser! PoA Supporter

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    Narco DME. Finally, after 50 years, gave up. Display works, but none of the stuff I need. No Distance to wherever, no speed either. The shop that fixed it 10-12 years ago closed when the two owners/electronics experts retired. Is there anyone left who can fix this thing?

    I repeat - do NOT go the GPS route. I don't have an extra $15K at the moment (or in near future) to do it right.
     
  2. Clip4

    Clip4 Final Approach

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    When was the last time you cleaned the oil from the bottom of your plane? This could be an antenna problem.
     
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  3. wsuffa

    wsuffa Touchdown! Greaser!

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    ^^^ that's where I'd start.
     
  4. CRQFlier

    CRQFlier Pre-takeoff checklist

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    Call bevan I guess? Or wait till I pull mine out. I've got it built into the cdi. Really a cool unit.

    Sent from my SM-G960U1 using Tapatalk
     
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  5. Morgan3820

    Morgan3820 En-Route

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    Give Jeff at Sandhill Avionics in Carthage, NC a try. http://sandhillsavionics.com/.
    He does legacy avionics work. Honest gentlemen.If he can’t fix it , he will tell you.
     
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  6. Doug Reid

    Doug Reid Line Up and Wait

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    What Morgan3820 said !
     
  7. bflynn

    bflynn Final Approach

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    Am I the only one who initially read this as a DPE died?
     
  8. Morgan3820

    Morgan3820 En-Route

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    I recon so. :D
     
  9. murphey

    murphey Touchdown! Greaser! PoA Supporter

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    Hm....I did an oil change a couple weeks ago, and today was the first chance to run the engine and check everything, then went flying. Never considered the antenna. Good reason to go back tomorrow, clean the antenna to make sure, then go fly again.
     
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  10. Clip4

    Clip4 Final Approach

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    You can also remove fasteners and clean under antenna. There is also possibility of bad cable.
     
  11. murphey

    murphey Touchdown! Greaser! PoA Supporter

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    I still have a can of Radio Shack electronics cleaner!

    Update: There’s still one Radio Shack in Colorado. Strasburg, which is almost 50 miles away, no airport tho.
     
    Last edited: Jan 24, 2021
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  12. PeterNSteinmetz

    PeterNSteinmetz Pattern Altitude PoA Supporter

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    Does this slide into a tray? If so, have you cleaned the connectors in the tray. Seems a long shot given your description, but it is cheap to try if it has a tray.
     
  13. wilkersk

    wilkersk Pattern Altitude

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    Oh, that can't be it. I thought 50 year old RG58 was indestructible.
     
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  14. asicer

    asicer Final Approach

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    Know anyone with the same unit? Maybe try theirs in your plane and vice versa.
     
  15. G-Man

    G-Man Line Up and Wait

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    What about TriCounty in Lafayette, on Gough Rd? It’s either tri-County Avionics or Instruments or Electronics, but I’ve heard good things about them in the past. They are not at an airport, but about 3-4 miles from Erie KEIK and across the street from one of the very best breweries in the hemisphere - Odd 13.
     
  16. bbchien

    bbchien Touchdown! Greaser!

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    If it’s not antenna related, get a KN-62 DME for cheap. Nobody wants ‘em......
     
  17. Tarheelpilot

    Tarheelpilot En-Route

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    No. When I read it again I saw DME but thought the exam for the A&P was going to be delayed. The I opened the thread and finally gat it sorted out.

    I agree on calling the guy in NC. His shop has a good reputation.
     
  18. steingar

    steingar Taxi to Parking

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    Odin must really love Luddite, he made so many.
     
  19. Tarheelpilot

    Tarheelpilot En-Route

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    Not being able to afford new avionics doesn’t make someone a luddite.
     
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  20. luvflyin

    luvflyin Final Approach PoA Supporter

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    https://mikesavionics.com/ I think this is the guy who used to work for Narco
     
  21. weilke

    weilke Touchdown! Greaser!

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    You should really get a GPS ;-)



    Cleaning the lead crud off the various antennas has fixed our ailing DME before. With everyone pulling and tossing DMEs, it would probably be easier to find a DME than to get the existing one fixed.

    A neat piece of equipment.
     
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  22. murphey

    murphey Touchdown! Greaser! PoA Supporter

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    Never got out to the hangar on Sunday...maybe Wednesday. Got my Radio Shack contact cleaner and ready to go!

    Wouldn't mind a replacement but it would have to be a slide-in, to avoid more wiring/avionics work/$$$.
     
  23. Ryan Klems

    Ryan Klems Pre-takeoff checklist

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    Depending on which Narco unit you have, @Timbeck2 might be able to make you a good deal on the Narco DME 890 I pulled from his panel when I put in the 430W. I think it's just sitting on a shelf in his hangar.
     
  24. Tarrow

    Tarrow Filing Flight Plan

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    DME will be around for awhile. I see some DME transmitters by themselves on the charts. It’s the only ground based backup to GPS and the FAA has been looking into using it that way, kinda like the original RNAV systems but without VORs.
     
  25. jimhorner

    jimhorner Line Up and Wait

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    Nope, I read it that way as well!


    Sent from my iPhone using Tapatalk Pro
     
  26. wsuffa

    wsuffa Touchdown! Greaser!

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    I've got a KN-64 sitting on a shelf, too.
     
  27. steingar

    steingar Taxi to Parking

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    Doesn't take $15K to install an IFR capable GPS.
     
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  28. bradg33

    bradg33 Pattern Altitude

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    Bingo. The devil is in the details, but something like a GPS400W can be acquired and installed for probably 1/3 of that, especially if you're somewhat handy.
     
  29. AdamZ

    AdamZ Touchdown! Greaser!

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    We just sent our MK12 D out to Bevan Aviation in KS. They repair a lot of old NARCO stuff. Ask for Tom. They are about 3-4 weeks https://bevanaviation.com/
     
  30. iflyforfun

    iflyforfun Pre-takeoff checklist

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    I LOVE the KNS-80 ... the first time I ever actually felt comfortable knowing exactly where I was on a long cross country as a 100 hour pilot (back in the 90s). I also remember when I lost both my KLN-94 and hand held GPS at around 300 hrs of experience over the Everglades and didn't have the KNS-80. I love my non-GPS RNAV.
     
  31. Skip Miller

    Skip Miller Final Approach

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    No.

    -Skip
     
  32. RyanShort1

    RyanShort1 En-Route

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    Was it COVID?
     
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  33. thomasdr72

    thomasdr72 Pre-takeoff checklist

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    I bought a brand-new Garmin GPS-175 for about $4,300. But that's an order of magnitude higher than swapping out a used DME...

    V/r,
     
  34. murphey

    murphey Touchdown! Greaser! PoA Supporter

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    But that $4300 doesn't include installation and all the additional parts for the GPS, database and avionics test.
     
  35. murphey

    murphey Touchdown! Greaser! PoA Supporter

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    To do it right it does. Mom-the-real-estate-broker "If you're going to do upgrades in the house, do them right, because you [or your cousin the executor of your estate] will sell the house eventually".
    Don't put in crap appliances, don't put in crap flooring, don't cheap out on the roof or replacement windows, etc. Same philosophy with the airplane.

    $15K for G5-HSI, GNC-355, GMU11 magnetometer, GAD29B adapter, all the install kits, wiring, paperwork, etc.
    Hardware about $9K, labor about $6K.

    I need the radio, only have the SL30 (which is great!) for nav/com. Could I get along with the 175 and save a couple grand? Yup, but again, I still have a single radio.

    Once again, I'm not looking for GPS as a replacement, looking for options on the DME.
     
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  36. steingar

    steingar Taxi to Parking

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    You know nothing @murphey. I had a KLN94 and an Appareo Stratus ADSB transponder installed for way less than that. Moreover, I needed a Number 2 comm and had to replace my Number 1 comm which decided to exit stage left. And I was still quite a bit less than the number you quote. It doesn't even cost that for the latest and greatest. You can be doing WAAS approaches for far less than what you quote.

    Your airplane, do what you want. Be a Luddite, it's no skin off my nose.
     
  37. murphey

    murphey Touchdown! Greaser! PoA Supporter

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    Interesting...
    Luddite: (defn) a person opposed to new technology or ways of working.

    Here I thought I was definitely in favor of new technology.
    I don't need the transponder, got the ADS-B back in 2018 before the mad rush began.

    As for the KLN94, here's the quote from Bennett Avionics
    "The factory has run out of replacement displays for the KLN-94 GPS Receiver, so the display is not repairable or replaceable."
     
  38. weilke

    weilke Touchdown! Greaser!

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    Some people cannot allow any opportunity to be a condescending jerk go to waste.
     
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  39. frfly172

    frfly172 Touchdown! Greaser!

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    Shop around for a used DME ,if the De makes you comfortable go for it.some posters like to spend other pilots money.
     
  40. thomasdr72

    thomasdr72 Pre-takeoff checklist

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    Very true, I paid $800 for the indicator, probably another $200 for miscellaneous install supplies. Labor cost in my case was zero.

    Initial database updates come with the unit (free one time update). Avionics testing was also free for me, but that doesn't apply to your average guy.

    Regardless, I would be surprised for the cost to exceed $8k for your average owner, possibly less if you already have a compatible CDI.

    Probably add another $2500 if you went with the Garmin GNC 355 which gets you that second comm radio (in the same panel space too!).

    Of course, it's always easier to make recommendations than it is to pay for them ;-) There should be plenty of used DMEs out there on the market, and that should be less than $1.5k :)

    V/r,

    -Dana
     
    Last edited: Jan 27, 2021