What is this? CRJ700 | TheaterFire

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Fantastic-Back-6868@reddit (OP)

Skywalker?

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Final-Carpenter-1591@reddit

Data concentrator units. If you're getting some wierd wacky ass alarms you can disable one

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hawker1172@reddit

If I recall, disabling the DCUs for messages that you subjectively find to be erroneous is not part of any approved procedure

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Final-Carpenter-1591@reddit

I've stumbled into the wrong sub. I should clarify. I'm in maintenance. We do some wacky shit that creates alarms we can and do ignore

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ducky2000@reddit

If you are a good FO you turn them off when you block in so you don't hear a bunch of annoying dings when you shut down.

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YamComprehensive7186@reddit

Speaking the truth, If I remember right you could de-select them for a couple procedures in the QRH or maybe that was for a ferry permit flight, anyway total silence.

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slay1224@reddit

Those are some of the oldest CRJ 700’s I believe. Someone once told what it was, but I’ve forgot by now. Must not have been too important. Glad I couldn’t be of any help to you!

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gtx7275@reddit

I worked at this company, they also have CRJ serial number 5 flying the line lol.

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AIRdomination@reddit

That looks nothing like SELCAL lol. Why would there be one in a CRJ anyway?

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SaroDude@reddit

The "For A Good Time" placard wore off.

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Fantastic-Back-6868@reddit (OP)

I know what the DCU panel is for. I was asking about the panel below that 😭. This panel is only equipped with that one specific airplane and no other CRJs within the company

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mikrowiesel@reddit

Oopsie! Yeah that one is a mystery and I probably should stop replying to reddit posts while doing other things. 🤦‍♂️

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Fantastic-Back-6868@reddit (OP)

The call button is separate from the DCU panel systems

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Lpolyphemus@reddit

Looks kinda like an ATSCAL device. It’s hard to find information via Google, but many moons ago I flew for an airline that had these.

It used telephone lines and VHF RCOs to provide a primitive sort of SELCAL. It allowed us to remain in contact with dispatch when we were out of VHF range (we didn’t have ACARS at that carrier).

It was difficult to use and super buggy. Almost always easier to relay the message via another company aircraft or ground (airport) station.

But we officially kept the system in place until all our airplanes were fitted with satellite phones.

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N5tp4nts@reddit

Opposing bases talked about this exact thing a couple weeks ago

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FreakyRiver@reddit

This looks exactly like a CTD-80 ATSCALL Single Input Decoder, P/N 1200001-006.

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Yeah I think this is the answer. The newer CRJ have a similar system but’s it incorporated into the hand mic. The older CRJ had this. By the time my airline got these airplanes ACARS was around so no one really had to use it.

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besidethewoods@reddit

Closest thing here to maybe an answer. Thanks for sharing.

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Gaffer_DCS@reddit

Summons the diet coke machine

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PunkerTFC@reddit

Secret switch that changes all the VHF frequencies to 121.5 right before you call the ramp.

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walterzingo@reddit

Screw heads nicely aligned. Makes me happy. Doesn’t take much.

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nolalacrosse@reddit

They are twist locks. If they aren’t aligned they aren’t attached

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walterzingo@reddit

Aww that’s gone burst my joyous bubble. Ah well, guess dzus fasteners are a blessing for those of us ‘on the spectrum’ 🙂

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dieseltaco@reddit

Dzus fasteners.

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dashdriver@reddit

Is it on an old horizon bird?

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andy51edge@reddit

I have seen that panel on old horizon planes.

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dashdriver@reddit

A few of the Dash 8s we got from them had the panel too. All that happened when you flipped the switch and hit the call button was a phone ringing noise if I remember right.

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kaiju505@reddit

For when arc gives you a number to call.

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YamComprehensive7186@reddit

Printer jam?

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ManifestDestinysChld@reddit

PC Load Letter?!

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dvcxfg@reddit

THE FUCK DOES THAT MEAN

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Lrrr81@reddit

It rings the telephone of an old lady in Germany. And she's getting pissed, so cut it out.

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avgaskoolaid@reddit

"Wenn du mich weiter anrufst, wird dein nächster Flug ein Ambulanzflugzeug sein! Verdammter Arschkrampe!"

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theanswriz42@reddit

You've spoken to Helga too?

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blitzroyale@reddit

Why does this cockpit look equally as dirty as a beat up c152 😂

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xxJohnxx@reddit

Because it is expensive to clean and several different people spend many hours in there every day. Cockpits are gross.

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rinfodiv@reddit

Would it kill some guys to clean up after they spill an entire plate of almonds into the seat track??

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Maldivesblue@reddit

Sweaty crews, eating god knows what, spilling all manner of food and fluids, yea, regional cockpits are gross.

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Worried-Ebb-1699@reddit

It ain’t much better in a boeing or airbus .

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snafu0390@reddit

The 320’s I fly are just as filthy as the RJ’s I used to fly except I find more fingerprints on the screens. Keep your greasy damn fingers off the screens!

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C152-Captain@reddit

I keep finding the CA windshield on the 320 with fingerprints all over it as well. What yall doing? Killing mosquitos?

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minfremi@reddit

Isn’t that where the hands go when you bend over while the A/P does the flying?

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nerferderr@reddit

I especially like the grease stains from heads on the side windows of the 737.

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UnfortunateSnort12@reddit

And Sani wipes aren’t windex! It does not help to use them on the screens!

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snafu0390@reddit

I flew with a dude recently who carried a 2” paint brush with him to “dust” the screens with. It just smeared the finger grease everywhere and made it even more unbearable.

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Doc_Hank@reddit

Microfiber towel, and a small bottle of windex. Windex onto towel, clean screen.

Also gets the grime off the wheel and throttles

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looper741@reddit

Sani Wipes for the fingerprints, then water to clean the residue. Perfectly clean with a little more effort. I hate when someone just uses the Sani Wipes and leaves the streaks.

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No-Business9493@reddit

And the CRJ200 doesn't even have HEPA filters to my knowledge. :)

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SeriousEgg2684@reddit

She don't need to with all that fresh air;)

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Lrrr81@reddit

Not "dirty", "experienced"!

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legimpster@reddit

The flight decks at the airlines, unless it’s a brand new plane off the line, are super beat up and gross. All of them. I’ve flown CRJs that are beat to shit, and 321NEOs that are equally as beat.

Doesn’t need to look good to function. Maintenance doesn’t care how it looks, as long as it works and is legal.

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mitch_kramer@reddit

I remember at the beginning of Covid they cleaned the flight deck super well and it looked awesome. Lasted about 2 weeks.

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n00ik@reddit

And the cleaning for the cabin doesn't enter the flightdeck, so it's up to the pilots to clean it. And we don't really do that...

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onetwentyeight@reddit

Because the same slobs graduate from C152s to RJs.

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PterodactylTurd@reddit

The 172 of RJs

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TheDoctor1699@reddit

It's a call button

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Dont_crossthestreams@reddit

Booty call

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ProcedureOne4150@reddit

If you’re in the cockpit and don’t know your buttons I am concerned.

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Fantastic-Back-6868@reddit (OP)

Also this is more complex than a fire alarm buddy

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Fantastic-Back-6868@reddit (OP)

Well this is a button that doesn’t exist in our company manual. How can I know something that I can’t reference anything to?

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climbFL350@reddit

Maybe it calls the ground crew!

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Prof_Slappopotamus@reddit

That's my thinking, but I don't recall any sort of horn on the CRJ. Only thing I can think of is the APU fire horn.

Might have been an option in the past and is just a holdover panel at this point. OP, check the cb panel and see if anything is locked out.

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climbFL350@reddit

Yeah when I flew it there was no such panel but it certainly isn’t to call the FAs since that’s on the center pedestal and who else would one be calling? That’s my logic at least!

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Prof_Slappopotamus@reddit

It's got a speaker...I wonder if the button lights up when the ground crew pushed something outside? Check the audio panel outside!

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phlflyguy@reddit

If I had to venture a guess, it has/had something to do with the interphone for communication with the FA. Surprised there's nothing in the AOM about it if it's there, and if it's not functional why it's not placarded as such.

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SlothSpeed@reddit

I was thinking something similar, but with the ground crew. There's a small speaker beside it, probably wouldn't be much use in flight but if you need to talk to a ground crew that might work.

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RescuePilot@reddit

You press that if you don’t want to raise or fold.

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Jusiun@reddit

That's how I pay for my flight school loan

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T-1A_pilot@reddit

I bet you're right!

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Slyflyer@reddit

Not too familiar with CRJ, is there an attendant spot somewhere on the plane that used to have the old corded phones? Maybe it would ring that when pushing the tab so you could do different ring styles. Idk. 🤷‍♂️

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