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CRJ200 – Quick Tip – Electrical Power – External DC

Posted by Jeffrey on 8th March 2009

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In any airplane there are a lot of buttons you will very rarely touch or press. The “DC Service” switch and the “DC Avail” push button are two of them. I talked about it briefly on the CRJ200 – Electrical Power Services Panel page, but this one goes a little deeper. Not much deeper because there really isn’t much to say about it…but I did it anyway. 

So, in all my time flying the CRJ200, I have never had an instance to use this switch and button, and to tell the truth probably wouldn’t know how to use them if I did; however, with that said, it’s important to know that they exist and how to use them IF you ever did have to use them.

So here is your CRJ Quicktip for today:

Once External DC is plugged in and energized, correct VOLTAGE and POLARITY are indicated by the Green AVAIL light being illuminated on the Electrical Services Panel (see the pictures above)

  • DC Power will replace the batteries and the batteries will then drop offline. In the picture below, the batteries are still powering the system. Once you press the DC Avail pushbutton though, the batteries would drop offline and the “EXT DC” bars will turn green and power the systems that the batteries did.
  • Batteries are NOT charged when using external DC power. AC power is required to charge the batteries.
  • DC Power can be used to start APU but this is very rarely used because you have to do some very specific steps

DC Power energizes:

- APU BATT DIR BUS
- MAIN BATT DIR BUS
- DC EMER BUS
- And BATT BUS if Battery Master ON)

So, you can see, there are a few things that DC External Power does on the CRJ200, but with so many other options and easily accessible power sources, there are very few times that you will be required to use it.

But now you know!

 

To Your Flying Success!

Jeffrey

P.S. There are lots more articles on flying and CRJ200 quicktips located in my Articles section. I hope to see you there!

Need more information on the CRJ200? Then pick up your copy of the CRJ200 QUICKNOTES STUDY GUIDE here!

 

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Posted in Airplanes, Aviation, CRJ-200, Captain Insights, Flight Training, Flying the Line, Regional Airlines | 2 Comments »

When Lightning Strikes Your Regional Jet

Posted by Jeffrey on 4th March 2009

Right Nose Wheel Gear Door

Right Nose Wheel Gear Door

Well, it happened yesterday. We were struck by lightning during the last ten minutes of our flight while descending into SFO.

We could hardly avoid it. We weren’t painting anything on our radar but ATC saw that we were headed towards an area of heavy precipitation so he vectored us away from it. But, by then, it was too late. A few seconds after we made the turn…BAM!…lightning struck. Didn’t see it as much as we heard it!

It was super loud but the airplane didn’t even budge. All our electronics stayed online, including our radios, and we continued to the airport in a torrential downpour and a huge headwind. It was an exciting couple minutes.

Side note: It always amazes me…the whole flight can be boring…but the last ten minutes can be very exciting. I wrote another article, Two Hours of Sitting, 20 Minutes of Work, that talks about the last couple minutes of a flight and how they can be the most interesting. Check it out!

Read the rest of this entry »

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Posted in Airplanes, Aviation, CRJ-200, Captain Insights, Flying the Line, Regional Airlines | 1 Comment »

Airline Proficiency Checks: The LOFT Scenario

Posted by Jeffrey on 19th January 2009

As you know, every six months a captain for an airline is required to do a recurrent simulator (sim) training, whereas the first officer is only required to do recurrent sim once a year.

Though a lot of pilots dread this training event, I view them as an opportunity to learn a few things, identify weaknesses, and basically polish my skills.

 

There are several manuals and regulations that guide you and your company as to what needs to be covered in a simulator checkride:

 And probably a few more…

 

A Normal Simulator Session

 

While in the sim, you are required to perform all maneuvers to the minimum standards as outlined in the
Practical Test Standards: Airline Transport Pilot (ATP) & Type Rating (Airplane) (FAA-S-8081-5D) handbook.

 

And if that wasn’t enough, prior to the checkride, there is a briefing in which you may be quizzed on but not limited to your understanding of the SOP, the FAR’s, the FOM, meteorology, Crew Resource Management (CRM) and aircraft systems.

 

Here is my favorite book ever on weather:

Weather Flying – Robert Buck’s “Weather Flying” is regarded in the aviation industry as the “bible” of weather flying.

If you need to brush up on your CRM, check out this DVD:

Jeppesen CRM – Exploring the Human Element Video (DVD) 

If you need aircraft systems help, I recommend this book:

The Turbine Pilot’s Flight Manual

The ultimate goal is that you perform all the tasks specified within the Area of Operations within the PTS, demonstrate mastery of the aircraft, and execute sound judgment and commandability throughout the checkride.

 

Believe it or not, lack of commandability is one of the most talked about characteristics in the debrief. Most captains have excellent knowledge of the manuals, regulations, and airplane systems, but can not translate that into commanding the airplane. Anyway, that and what a normal simulator checkride entails is a topic for another day.

 

For me, this sim session was to be a little different because it was a Line-Oriented Flight Training (LOFT) session as opposed to a standard or normal simulator checkride.

 

The Line-Oriented Flight Training (LOFT) Simulator Session

 

A LOFT is geared more towards the “normal” operations of a trip and what happens while performing these duties…with a few malfunctions thrown in for good measure.

 

The siminstructor, outsideof being the check airman, judge and jury, wears many hats which include but aren’t limited to being the flight attendant, operations personnel, dispatcher, ATC controller, fueler…you name it.

 

During the pre-brief, we were instructed that we should do everything that we would normally do on-line. His instructions were that if we thought we should do something or would normally do it, then we should do it.

 

Easy enough!

 

LEG 1: Salt Lake City (KSLC) to San Francisco International (KSFO) – Captain’s Leg

 

So here is what basically happened:

 

We were presented with a manifest and flight release with which we figured out our takeoff weight and trim setting. We received the ATIS and clearance as well.

 

On this particular trip we were flying from SLC to SFO with an APU that was deferred, i.e., broken. This means that we had no electrical power or air conditioning, heated or otherwise, available on the ground. Furthermore, since the air from the APU is used to start the engines, we were going to need an Air Cart to start the engine at the gate. (If you remember, I had this exact real-life condition a few weeks back. So I was very well prepared for this scenario.)

 

Once in the simulator, we ran the normal checklist. The “flight attendant” said it was a little cold in the cabin and asked if we could do anything about it. I said that since our APU was broken, we would call for Low Pressure Conditioned Air and I left it at that. However, I never followed up. That would be my first mistake because as it turns out, if the sim instructor, acting with multiple hats on, asks you for something, they are expecting you to act upon what you said you would do. Therefore, I should have “simulated” calling “ops” and asking them for Low Pressure Conditioned Air. Another thing that I was going to find out during the debrief was that I didn’t call “ops” for the Air Cart for the air start in a timely manner. Oh well…

 

At some point I think I was getting into the grove of playing the part of an actual flight even though I was in the simulator. It was difficult to make the transition because we weren’t dealing with actual time lines, that is, we didn’t have a “real” scheduled departure time. Furthermore, all the elements of an “actual” flight were missing which took away some the realism and natural flow of doing a trip. But, we made due and like I said, at some point it became real and I started acting like it.

 

Next, having our “passengers” on board and the door closed, which, by the way, we “simulated” closing the flight deck door. We prepared for the air start. Again, we ran the checklists that we needed to and got the engines started. The whole time during the engine start I was expecting something to happen like having a Hot Start or Hung Start or something that we would have to deal with, but there was nothing.,  The taxi out was uneventful as well. At takeoff, again I was expecting some sort of malfunction or engine failure, but again, nothing. We did have to takeoff unpressurized though because the weather was 5° C (40° F) with fog and therefore required us to use our wing and cowl anti-ice for takeoff. There are a few steps to follow to do this. The air conditioning packs have to be turned off and the ram air open which means that after takeoff, above 1,500 feet above ground level (AGL), the process has to be reversed.

 

During a normal sim checkride, malfunctions and engine failures are a normal occurrence. If you have been to enough of them, you begin to anticipate their occurrence because though sims usually follow a specific pattern, you are never quite sure what will happen next.

 

Free Pilots Tip of the Week from PilotWorkshops.com 

 

Now, if you have ever flown IFR into or out of Salt Lake City (SLC), you would know that the ATC facility there is both a training facility for controllers and has initiated complicated RNAV departures or Standard Instruments Departures (SID) and arrivals with both speed and altitude restrictions. Our clearance was the PECOP 1, Fellows transition off of runway 34L . This departure procedure has multiple climbing and speed restrictions which we had to comply with and did. So, once we had the airplane re-pressurized, we climbed out according to the RNAV departure. No problem.

 

Problem Area: The sim instructor told us after the session that a lot of crews bust the speed and altitudes restrictions because they focus on re-pressurizing the airplane and forget about the crossing restrictions. Be careful.

 

The next hour was shear boredom. Nothing happened. The weather in San Francisco was fine though we would have to prepare for the Precision Radar Monitored (PRM) approaches. The temperature was warm enough that we wouldn’t need wing and cowl anti-ice, thus we wouldn’t have to depressurized the airplane for landing. The only challenging thing about flying in SFO was that we had to brief the LDA DME 28R approach. Again, not tricky but there are a few things to be aware of. SFO is authorized to conduct Precision Radar Monitored (PRM) approaches. Basically a no transgression zone (NTZ) is set up between runway 28L and runway 28R. Their radar is very accurate and an airplane “transgresses” into the “zone,” bells and whistles go off and someone has to perform a hand flown “breakout” maneuver away from the intruding aircraft. However, in order to land while doing a PRM approach, you have to have the airplane you are coupled with insight AND the runway in sight in order to get a clearance to land. Not a big deal once you’ve done it a few times but again I was waiting for it to happen and it never did. We landed and taxied to the gate.

 

Leg 2: San Francisco (KSFO) to Burbank (KBUR), First Officer’s Leg

 

CRJ200 Quicknotes Study Guide with CRJ700 DifferencesOur next trip leg was planned from SFO to BUR and though the first part of this trip was uneventful, the last part was work.

 

Our trip began normally. In SFO, our APU was “fixed” and nothing crazy happened. We departed without incident though we did “fly” through some wake turbulence of a Boeing 777 which caused us the airplane to bank about 90 degrees and kicked off the autopilot.

 

My captain mistake was that I didn’t call back to the FA soon enough to tell her what had happened.

 

Afterwards, I did make a PA about what happened but in hindsight, I not only should have called the FA and told her what had happened but I should have also checked on the passengers to make sure they were fine. Lesson learned.

 

The flight and descent into Burbank went by without incident, but while on final approach to ILS 8 in Burbank, after the first officer called for “Gear Down,” that is when things started to happen.

 

Instead of the normal three green gear down indicators that we normally get when the gear is down and locked, we got a “Gear DN Disagree” warning message and the nose wheel indication was yellow hashed marks.

 

OK, here it is…time to go to work.

 

The first officer executed the missed approach and ATC told us to fly the published missed approach procedure which is climb to 6,000 feet, make a right turn direct to the Van Nyes VOR and hold.

 

Not having to do many missed approaches, the first officer was a little slow to start the climb, not remembering to take off the autopilot and climb. He figured it out soon enough.

 

Next it was his job to call for the Quick Reference Handbook (QRH) for “Gear DN Disagree” again which he was a little slow to do. Then, once established in the hold, I went to work on the problem. Again, no big problem, the procedure was straight forward IF you have the right checklist.

 

Problem Area: The sim instructor told us that this is another big “gotcha” because crews tend to pick the wrong QRH. They run the “Gear UP Disagree” QRH instead of the “Gear DN Disagree” QRH. The results are still the same but regardless, it is the wrong procedure.

 

Back to the story.

 

During this time, as a captain, I am thinking about several things: fuel, the FA, passengers, alternate airport options, weather…to name a few.

 

While the first officer is talking on the radio, I hear “ATC” ask what our intentions are. I tell the first officer we are diverting to LAX. “ATC” tells us they are standing by whenever we are ready to divert.

 

I finish the QRH, talk to the “FA,” talk to the passengers, declare an emergency with ATC, and tell them we are ready to divert to LAX.

 

One thing I think about but don’t act on is that I should call “ops” in Burbank. I decide against it for two reasons:

 

  1. Since I’ve declared an emergency, “ops” will find out soon enough that we have diverted and to where.
  2. I’m REALLY busy with other matters that talking to “ops” isn’t one of my highest priorities.

During the post flight debriefing, the sim instructor tells us that some captains declare an emergency and some don’t. I declared an emergency because that gives me a lot more options. I get special handling and I get the emergency vehicles at the end of the runway in case something else happens. If nothing happens, so what. If something does happen, then I’m covered. Furthermore, a lot of captains worry that there will be “paper work” after declaring an emergency. That is not necessarily true. You may have to explain your decision to the Chief Pilot and fill out a report, but it shouldn’t be any more than you would normally do in the event of an irregular operation. Captain’s call though!

 

More Work

 

While on our way to LAX, with the gear down, I get the weather, recalculate the landing weight, and run checklists…again. There are a few new variables thrown in. The weather isn’t that great in LAX. The touch down visibility is 1,200 feet RVR or ¼ mile. I hear him say that and all I do is respond, “Roger.” Technically, I need another RVR reading, either rollout or mid to accept the approach but I’m thinking that I’ve already declared an emergency so it doesn’t matter; we are going to do the approach anyway, so why waste my breath.

 

Brief Explanation of CAT II Approaches

 

Now at SkyWest, a CAT II approach is a “captain monitored approach” which means the first officer flies it while I monitor our progress. A normal CAT I approach has us arrive at minimums or the missed approach point (MAP) at around 200 feet AGL at which time if we don’t have the airport environment, we do a missed approach.

 

A CAT II approach allows us to descend to 100 feet AGL. It’s amazing what 100 feet can do.

 

There are CAT III approaches that companies like United and Delta can do which allow you to land 0-0. Zero visibility and zero ceiling. These are auto-land procedures where the airplane does everything like speed control, the landing, AND rollout. I’ve seen it done once while I was sitting in the jumpseat on a mainline United flight. Very cool!

 

Back to the CAT II approach.

 

Now, if when we get down to “minimums” and I have the airport environment in sight, I move his hand off the thrust lever, disconnect the autopilot and land. If, on the other hand, we get to “minimums” and I don’t see the runway, the first officer flies the missed approach. It all happens within a matter of seconds. I’ve only done one CAT II approach in real life. Very fun!

 

The logic on a CAT II, why it is a “monitored” approach, is because at 100 feet AGL moving somewhere between 100 to 140 knots over the ground, it would be too difficult to transition from instruments to landing, thus the first officer flies the approach and the captain monitors it. At 100 feet to the minimum descent altitude, the captain transitions his view from the instruments to the outside. Like I said earlier, if I see the runway, I land. If I don’t see the runway, the first officer flies the missed approach. It’s a very cool procedure.

 

But as you probably guessed, I saw the runway and landed.

 

As soon as we landed though, we got a “Nose [wheel] Steering Inop” caution message. We told tower and then exited the runway.

 

THE END!

 

Some Final Thoughts

 

I thought the whole simulator ride went very well and I thought the first officer did a great job too.  After the de-brief and after I decompressed I thought about a few things that I would probably have done differently:

 

  1. I would have asked for the low pressure conditioned air.
  2. I would have called for the air cart sooner.
  3. I would have set the crossing altitudes on the RNAV departure sooner.
  4. Monitored the outside temperature better to insure that I put the cowls on in a timelier manner.
  5. Checked my tailwind component better on the takeoff out of SFO.
  6. Called the flight attendant sooner to check them and the passengers.
  7. Started the APU prior to doing the CAT II approach though it is not called for.

 All in all, it was a worthwhile sim ride. Both my first officer and I took a lot away from it that we can use. I believe that that is the intent of the sim anyway, to make you a better pilot.

 

So the next time you have to do your annual or semi-annual sim ride, take a few moments to review your SOP, FOM, Part 91 FAR’s, Part 121 FAR’s, and your airplane systems. Also, take a moment to “arm chair” fly, reviewing critical procedures and maneuvers like stalls, steep turns, V1 cuts, single-engine approaches, etc.

 

It will make the sim go a lot better for you.

 

And most importantly, try not to be too anxious about your upcoming ride. More often than not, being anxious, causes you to make mistakes that you normally would NEVER make if you were flying the line. But, if you DO make a mistake or two, let it go and continue with your checkride. You will have a chance to review your successes and mistakes in due time and you will probably see that your mistakes weren’t REALLY that bad and that you learned a few things along the way!

 

Till next time…be safe!

 

Jeffrey

 

Jeffrey is a captain at a regional airline and flies the CRJ200, CRJ700, and the CRJ900. He has over 4000 hrs of flying experience in many different airplanes and is a Gold Seal flight instructor to his credit. He has recently written “The CRJ200 Quicknote Study Guide” that simplifies the systems of the CRJ200 into a downloadable eBook. Click here to get your copy today!

P.S. Some cool simulator stuff you will want to check out:

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Posted in Captain Insights, Flying the Line | 4 Comments »

A Busy Day with a Mostly Broken Airplane

Posted by Jeffrey on 11th January 2009

After commuting to ORD from COS, we arrived to 3/4 mile visibility and light snow. Personally, I was surprised that we got in. We did have to hold for about 10 minutes though before doing the approach.

After landing, the funny thing was they parked us at gate F1C which is out on the ramp without a jetbridge which required the passengers to walk, through the snow, to the terminal. Four other jetbridges were wide open but I’m “sure” they were going to be used for “other” airplanes.

Here is a picture of what it looked like when we landed.

Now, my four-day trip was due to start at 12:40 pm and I was again surprised to find that the airplane we were taking was on-time and at the gate.

No APU and Snow

This is when the fun really began.

When I got the flight release, I discovered that our Auxiliary Power Unit (APU), which provides electrical power and air conditioning to the airplane, as well as helps start the engines on the ground, was broken. It is never a fun situation. In this situation, ground personnel provide an “Air Cart” that will take the place of the APU. It usually takes coordination with ground personnel to get the Air Cart in the first place, then coordination to get the engine started. Sometimes this can take a very long time.

What an Air Cart does is it pushes air through some manifolds that are directed to the engine and gets the engine spinning. When you have enough rotation on the engine, you can start the START cycle. Once the engine reaches a certain speed and is burning jet fuel, it is now self-sustaining. The APU usually provides enough pneumatic air to do this but like I said, this one was broken.

The process of doing an air start isn’t difficult but it can be confusing for new captains. It gets easier to manage the situation the more you do it, but one of the biggest collateral problems is that there is no heat because there is no air conditioning, so the passengers are practically freezing.

No pilot likes to have their APU broken. It is a huge inconvenience, and the fact that the APU is broken on this flight, it will cause more problems before takeoff. So read on. Today’s adventure isn’t over.



The Long Taxi to Runway 32R

Now, one of the problems with snow days is that usually there is wind as well. Not always but usually. In this case, ORD was taking off only on 32R and 32L because of wind and once we rounded the corner heading to the runway, we saw that there was a long line of airplanes waiting for 32R. Not too bad really. We figured it would take about 15 to 20 minutes to work ourselves through the line for takeoff.

In such a situation as this, one thing captains have to be aware of after getting de-iced is how long their de-icing fluid will be effective. Because of the light snow and temperature and with help from our hold-over-time (HOT) charts, we determined that if all things stayed the way they were, we could figure we could safely stay on the taxiway for one hour before we had to head back and get de-iced again.

As it turned out, we came in way under that time and once we checked the wings right before takeoff, we confirmed that they were clear of snow and that the de-icing fluid was still working.

As a side note, once we start our takeoff role, the de-icing fluid shears off and is not a factor. It sole purpose is to absorb the snow while on the ground.

More Work on Takeoff Because No APU

As mentioned earlier, by not having an APU and besides the fact we had no electrical power on the ground, or air conditioning on the ground, or any engine starting capabilities on the ground, we were going to have another issue to deal with on takeoff because we didn’t have an APU. Another quick note: Once the engines are running they do everything mentioned above.

Now the CRJ200 does not have enough bleed air from the engines to provide both air conditioning and wing and cowl anti-ice (when needed) for takeoff.

So, normally, in a snow day condition, you would let the APU continue to provide the air conditioning which would leave the engine bleed air to provide the anti-ice. But…since the APU was MEL’d, we would have to work this issue by taking off unpressurized. That means that the air conditioning packs would have to be turned off and the RAM AIR opened for takeoff. Again, not a big deal, it is just that this is outside the normal operations of flying this airplane and creates a higher workload in an already stressful environment. Once you reach 1,500 feet above ground level (agl) after takeoff, you close the RAM AIR valve, open the 10th stage bleed air valves and turn on the air conditioning packs and continue. Easy…right?!

Two More Annoying Problems: Low Cabin Pressure and No FMS

To add to an already workload filled day, two more things were going to pop-up on the next flight. First, we got a “LOW OXY PRESS” caution message. Not a big deal. It was just telling us that the canister that holds the pilot and co-pilot’s oxygen that we would use in an emergency had dropped below 1410 psi. Easy fix…called Maintenance in Denver and they rushed out an filled it up.

Second, on that same flight, we lost our Flight Management System, the FMS. It just went blank. We had no more GPS navigational data and subsequently had to go back to navigating the old fashion way, from VOR to VOR.

It was actually kind of fun and if nothing else a good lesson on how to do it…again. Basically, instead of letting the autopilot follow the programmed GPS route, you now have to be more involved. The autopilot would still maintain control of the airplane, it is just that you now have to program the VOR frequencies and dial-in the correct radials for the airplane to follow. When the FMS is working correctly, once you have programmed the FMS, albeit “correctly,” the airplane on autopilot will follow the programmed route. Anyway, after landing in Denver, we “rebooted” the airplane and it worked fine the rest of the day. A full explanation of the FMS is a topic for another day.

So you can see, a lot went on today! Some days are ordinary and some days challenges are presented that with experience you learn to handle efficiently and safely. It’s good for these things to happen because otherwise you become complacent and when things really go wrong you have nothing to compare it to. So enjoy the small hiccups when they happen and put them away for later use.

Anyway, I hope you have today’s entry from “Flying the Line.” If you have any questions, please feel free to leave a comment below. Also, don’t forget to sign up for my RSS feed or email updates.

To Your Flying Success…

Jeffrey

Here are few cool weather related products that I think you will be interested in:

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CRJ-200 – Quicktips – AC External Power and Service Config

Posted by Jeffrey on 9th January 2009

There are two very small AC power functions on the CRJ200 you should know about. I’ve combined them here because they basically compliment each other.

When you pull into the gate or arrive at the airplane from an overnight or airplane swap, in order to save some jet fuel, consider having External Power connected, if it isn’t already. You will save hundreds of dollars in jet fuel, decrease the wear on the Auxiliary Power Unit (APU), and reduce noise associated with the APU, which can be very loud!

In my experience, I have seen two different ground power sources:

1) ground power from the terminal via an electrical cable
2) an engine-driven ground power unit (GPU)

CRJ200 Electrical Power Service Panel

CRJ200 Electrical Power Service Panel

Now, if you arrive at the airplane and one of these is hooked up, you will see a green AVAIL light on the Electrical Power Services panel over AC. This indicates that the electricity being provided is the correct FREQUENCY, PHASE, and VOLTAGE, and that it is safe to use.

Beware though! There have been many times when I’ve stepped into the airplane and it was already powered up but the Master Switch was not selected to ON.

Maintenance or more likely ground personnel had moved the airplane from its overnight location to the gate, attached the ground power and pressed the AC AVAIL pushbutton and never turned the Master Switch ON. For reasons I’ll explain in another entry, this could cause the Air Driven Generator (ADG) to deploy on the ground and then you have a real mess on your hands.

AC External Power

CRJ200 - AC Synoptic - AC External

CRJ200 - AC Synoptic - AC External

The proper use of the AC External Power is to have ground personnel connect the cable. Check that the BATTERY MASTER switch is selected ON. Check the AC Synoptic Page and insure you have the correct voltage and frequency. Next, check the ELECTRICAL POWER SERVICES panel and insure that the green AC “AVAIL” light is illuminated. Press the AC “AVAIL” pushbutton in and now you have all the electrical power you need to pre-flight the airplane.

A few problems that I’ve had with ground power is that the external plug will occasionally fall out or be too loose to stay connected or the power itself will trip offline. You will see power trip off most often when you check the hydraulics because the hydraulic motors use a lot of electricity and sometimes the ground power just can not handle the electrical load.

If this happens, then it might be time to start thinking about using the APU.

AC Service Config

CRJ200 - AC Synoptic - Service Configuration

CRJ200 - AC Synoptic - Service Configuration

This configuration will most often be used by ground personnel when they clean the airplane on an overnight.

With ground power hooked up, and the SERVICE CONFIG button pressed on the AC Service Panel on the right side of the nose of the airplane, the interior lights and cargo lights will have power but basically nothing else. Only UTIL BUS 1 and UTIL BUS 2 are powered. Also, note the “SERVICE CONFIGURATION” in the top left-hand corner of the synoptic page.

If after you power down the airplane, the rampers complain that they have no lights in the cargo bay but ground power is hooked up and working (you will know because of the green AVAIL light is illuminated), the problem is usually that the SERVICE CONFIG button is not pressed in.

As a side note, during SERVICE CONFIG operations, there is no AC cooling going on but that is fine because the main displays (MFD1(2), PFD1(2), and ED1(2)) are not powered.

Anyway, there you have it, two minor systems of the CRJ200 that are essential to ground operations. The next time you are in the airplane. Have a look at the panels that I’ve mentioned as well as the synoptic pages. It will tell a story!

Be safe…

Jeffrey

P.S. If you like what I’ve been writing, please sign up for the RSS feed or email updates.

Want the whole complete story on the CRJ200? Then pick up your copy of the CRJ200 QUICKNOTES STUDY GUIDE here!

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