identification ?

[Jackpilot]

Bought this for peanuts on EBay out of curiosity..

There seems to be an electrical contact (arrow) under each of the 4 top flaps.
Anyone knowing how it works?

[No Longer Active]

know how it works?

dont even know what it is?

just out of curiosity....what is it?

Cheers,

Alex

[Trevor Hale]

Looks like a Transponder Radio Panel..

[Geremy Britton]

It certainly looks like a transponder from a boeing.

Buy that from james-buffy by any chance? ;-)

[Michael Carter]

I can't open the photo on my iPhone, but if it's what I think it, it's an old trip encoder.

[airbus319]

it may be a Selcal panel from an old boeing

cheers

Dave

[Jackpilot]

Gez...No I never bought/will buy from him. I can do my own buying direct!!

I think it is a trip encoder

Mike? what is a trip encoder

[Trevor Hale]

I can't open the photo on my iPhone, but if it's what I think it, it's an old trip encoder.

Don't ever doubt the Skunk.. He always knows what he is talking about, and he can't even see the darn thing..

Clairvoyant? LOL

[Geremy Britton]

Jack, indeed I won't buy from him either! Just saw one he listed a couple of months back.

And Mike knows his stuff when it comes to things like this.

[Michael Carter]

Thanks for your confidence folks. ;)

Yes it is a trip encoder/reminder. When used or ordered, it was usually installed above the WX radar on the 727.

I do not know if it was for a rudementary ACARS system or the flight data recorder, or if it was even interconnected to these systems at all. It may have just been a convenience for the crew so they didn't forget their trip number while using the radios.

[paulj]

OK my turn to ask really dumb question.:D
What's the significence of crew knowing their trip number when using the radio? Is the trip number the flight number?

Paul

[Michael Carter]

Yes. And if you fly multiple flights in a day it's easy to forget just which one you are.

I used to ferry aircraft to the next airport from our flight school for radio certifications. I'd fly up to five or six aircraft in a day. It's easy to forget which one you're flying without that little plaquard on the dash.

[fweinrebe]

Yes. And if you fly multiple flights in a day it's easy to forget just which one you are.

I used to ferry aircraft to the next airport from our flight school for radio certifications. I'd fly up to five or six aircraft in a day. It's easy to forget which one you're flying without that little plaquard on the dash.

I can also relate to that. We used to fly from Windhoek to Tsumeb to Katima and Victoria Falls with flight number of 821. Then all the way back as 822. If you then ask for startup at Vic Falls for example as 821 you totally confuse ATC.

We also had a rule that for a non scheduled flight or ferry flight you use a callsign with a 9 in front (Like 9821). Totally what one is not used to. Amazing how your tongue gets a knot. They have these flight number things on the Boeing yokes as well.

[Michael Carter]

Yeah, I have one on mine. Maybe they stopped using the trip reminder after the yoke mounted model was introduced.

[Jackpilot]

That thing is not entirely mechanical..there are four tabs at the top of each wheel and when slided they show a little tongue of brigh metal which makes contact with the tab...very intriguing...
I cleaned out 30 odd years of finger grease (Johson's "Fantastik" works very well)and once repainted I will incorporate it in the pedestal.

[Rodney]

possibly sending a signal somewhere else and then to the FDR.

[fweinrebe]

Jack, are the digits only from 0-7 or are they 0-9? [EDIT: Never mind the question, There is a 9 on the photo. Then it is not a transponder dial either]

It's not SELCAL because SELCAL uses alphabetic characters instead of numbers.

[Michael Carter]

Do you have a part number I can look up?

[fweinrebe]

possibly sending a signal somewhere else and then to the FDR.

Good guess Rodney. I also just remembered, we used to setup the Flight No before each flight for the FDR.

[Jackpilot]

Do you have a part number I can look up?

Washed out
I can read:
.....W.(T?)..ON.CO
Seattle WASH
P/N 600

[Michael Carter]

I'll see what I can dig up when I get home tonight.

[Michael Carter]

I've searched the internet for an hour, have gone through every manual I own, but I cannot find any information about this part.

If you can make out any more of the tag or open it up and see if there is anything afixed to the inside of the case, let me know.