Tuhlhorn From United States of America, joined Aug 2007, 14 posts, RR: 0 Posted (7 years 4 months 3 weeks 6 days 8 hours ago) and read 4434 times:
I was recently hired by PSA flying the CRJ 200 and 700 and I am studying hard for the month of November, as I start training in December. I am currently studying the hydraulic system and I have found something that seems weird and I am trying to find out "WHY" this happens.
why does pump 2b shed automatically if the left engine fails and pump 1b sheds automatically if right engine fails?
I think I said that correct, I dont have a whole lot of resources so I am trying to work with what I have for now. The only explanation I could think of but doesnt sound all that correct to me is pump b will shed on the good engine so that the hydraulic pressure will remain equal on both sides (1 pump per side)?
Any info on this or anything else that will help me with this would be greatly appreciated.
As someone living in DAY and tempted by PSA's new qualifications of just Commercial, multi, instrument, do you mind if I ask you how many hours you had before getting hired? I don't want to spend the $20k or so to push ahead with the rest of the ratings if their commercial/multi/instrument only mins are just an advertisement but in reality you still need the 1000 + 100.
N710PS From United States of America, joined Oct 2006, 1166 posts, RR: 3
Reply 6, posted (7 years 4 months 3 weeks 6 days 4 hours ago) and read 4359 times:
Welcome aboard!!!! Do't let the old timers get you down. There are some real egos in the left seat. Try to have fun and have fun man. See you around sometime. P.S. It is for electrical load shedding purposes. Jetlagged got it pretty much correct.
Again, good luck!
There is plenty of room for Gods animals, right next to the mashed potatoes!
Tuhlhorn From United States of America, joined Aug 2007, 14 posts, RR: 0
Reply 8, posted (7 years 4 months 3 weeks 6 days 3 hours ago) and read 4340 times:
Ahh, Thanks a bunch for the help, that makes a lot more sense now. For the guy wandering of my time when I was hired I have right under 900 total time with 12 hours of multi. Just turned 21, been a CFI for a year and a half in San Antonio, Just got my aviation degree. I brought with me 2 letters of rec. One from my boss at the school and one from the law firm that I fly a 210 for.
Pilotpip From United States of America, joined Sep 2003, 3152 posts, RR: 10
Reply 9, posted (7 years 4 months 3 weeks 6 days 3 hours ago) and read 4334 times:
Don't beat yourself up studying if class hasn't started yet. Learn what they tell you, exactly what they tell you, and nothing more for right now. You're going to be trying to take a drink from a fire hydrant. If they gave you any memory items or flows I'd start working on those because it will be a huge help to be reviewing those rather than learning them later on.
NW747-400 From United States of America, joined Jun 1999, 504 posts, RR: 0
Reply 10, posted (7 years 4 months 3 weeks 2 days 2 hours ago) and read 4168 times:
The cross-side relationship on the hydraulic pumps is for redundency in the event of an engine failure. If the LH engine fails, pump 2B is shed because 2A is still providing pressure to the system. If the LH engine failed and 1B were to shed, you would lose both hydraulic pumps on the same system. Bombardier's design allows you to have all 3 systems still working in your favor in the event of an engine failure.