Systems Question about the CRJ 200

[atrdriver]

I fly the ERJ, but is it common to do a battery start and just leave the engine running during boarding at some carriers? I've always thought that if they APU is MEL'd (or any part of it). The aircraft stays on ground power until boarding is done and the doors are closed. Then the engine is started with a huffer cart or bottle at the gate, power disconnected then the aircraft pushed back with an engine running.

At XJT, we start #2 on the gate with an MEL'd APU only because the nosewheel steering is on the #1 Hyd. system and we don't want to risk it engaging during pushback.

Well, I have never done a battery start off a huffer, and can't imagine ever doing one. I just know there is a procedure for it on the 200. Now that I said that I will probably have to do 5 of them on my next trip...

 

[Sawmill]

Ill just add this little conversation to my list of reasons why I quit the airlines...Saturday late-night discussions about engine start proceedures on a CRJ. Anyone want to sign up to discuss the environmental control system on the 200 next weekend? Perhaps 11pm Saturday? (Im busy then but Im sure you guys can get the ball rolling)

 

[Airboss]

Well, I have never done a battery start off a huffer, and can't imagine ever doing one. I just know there is a procedure for it on the 200. Now that I said that I will probably have to do 5 of them on my next trip...

Just know that this QRH procedure changed in the last year due to DSM 'incident'.

 

[Flyin2low]

Ignition A is battery powered and ignition B is Ess AC(which you don't have yet) powered so you also have to use ignition A with a battery/huffer startup.

 

[Russ]

Are you sure, I am under the impression that B ignition is from the battery?

 

[wmuflyguy]

Ignition A is battery powered and ignition B is Ess AC(which you don't have yet) powered so you also have to use ignition A with a battery/huffer startup.

Ignition A is powered by the AC Essential Bus
Ignition B is powered by the DC Essential Bus Via a Static Inverter

You use ignition B for a DC start.

 

[BoilerUP]

Are you sure, I am under the impression that B ignition is from the battery?

I agree...had to do a battery start in LGA last week. B ignition is DC powered, A ignition is AC powered.

 

[wmuflyguy]

I agree...had to do a battery start in LGA last week. B ignition is DC powered, A ignition is AC powered.

Techinically they are both AC powered, but the B gets its AC power thorugh an Inverter from the DC Essenital Bus.

Wow i'm bored

 

[AWACO]

Ill just add this little conversation to my list of reasons why I quit the airlines...Saturday late-night discussions about engine start proceedures on a CRJ. Anyone want to sign up to discuss the environmental control system on the 200 next weekend? Perhaps 11pm Saturday? (Im busy then but Im sure you guys can get the ball rolling)

I dont know what is worse, a bunch of RJ pilots talking about this or someone talking about it who is no longer a pilot?

Sawmill, You spend a lot of time reading airline stuff for someone so proud of not being in the airlines. I know this is not the 1st time you have injected your little useless bits of garbage to a reasonable conversation. If you are so happy on the outside why do you feel the need to justify it with us all the time, we dont even know you??

 

[lindsaya99]

Ill just add this little conversation to my list of reasons why I quit the airlines...Saturday late-night discussions about engine start proceedures on a CRJ. Anyone want to sign up to discuss the environmental control system on the 200 next weekend? Perhaps 11pm Saturday? (Im busy then but Im sure you guys can get the ball rolling)

I think Chuck Norris needs to pay this guy a visit.