Question for Q drivers

Discuss topics relating to Jazz Aviation LP.

Moderators: ahramin, sky's the limit, Sulako, North Shore

Message
Author
User avatar
Bede
Rank 10
Rank 10
Posts: 2770
Joined: Tue Mar 09, 2004 5:52 am
Contact:

Re: Question for Q drivers

#26 Post by Bede » Tue Nov 26, 2013 7:00 pm

How come the Q400's always have the GPU plugged in for starts? I thought there was an APU.
---------- ADS -----------

prop2jet
Rank 7
Rank 7
Posts: 524
Joined: Thu Feb 17, 2005 11:50 am

Re: Question for Q drivers

#27 Post by prop2jet » Tue Nov 26, 2013 7:59 pm

In part, fuel savings. At Jazz, the APU is only to be used when necessary i.e they would rather the aircraft be connected to a sub standard power cart that seldom puts out what Bombardier recommends and ground air that does just about SWFA on short turns. I also understand that there is a design flaw as well such that if the aircraft were always being started with the APU there would likely be a higher rate of servicing required.
---------- ADS -----------

JazzYVR
Rank 0
Rank 0
Posts: 3
Joined: Thu Feb 13, 2014 12:30 am
Location: YVR

Re: Question for Q drivers

#28 Post by JazzYVR » Sun Nov 02, 2014 11:13 am

Sorry to re-open this topic, but I have some questions for Q4 drivers as well.

Is it normal to take off with reduced torque whenever possible? Is 81% common?
What rpm/power setting is used in the climb?
Is MTOP ever used?
Are reduced NP landings common?

Thanks!
---------- ADS -----------

User avatar
Canoehead
Rank 8
Rank 8
Posts: 846
Joined: Wed Jan 05, 2005 11:08 pm
Location: YEE 220 @ 4

Re: Question for Q drivers

#29 Post by Canoehead » Sun Nov 02, 2014 9:05 pm

Sorry to re-open this topic, but I have some questions for Q4 drivers as well.

Is it normal to take off with reduced torque whenever possible?
Yes, unless first flight of day or other operational considerations

Is 81% common?
83% is the minimum RTOP we use

What rpm/power setting is used in the climb?
RPM for climb is 900, torque is whatever FADEC calculates is required for maximum climb power, or MCL as it's designated

Is MTOP ever used?
It's rare, but occasionally it is

Are reduced NP landings common?
Very common. The majority of landings are done with reduced Np. There are some operational restrictions and even airmanship might come into play (as much as it seems to be a dying art...) that could preclude an 850 landing
---------- ADS -----------

av8ts
Rank 7
Rank 7
Posts: 516
Joined: Fri Apr 08, 2011 8:31 am

Re: Question for Q drivers

#30 Post by av8ts » Tue Nov 04, 2014 12:25 pm

Saw a Jazz Q400 taxi in in Toronto today with the left engine shutdown
---------- ADS -----------

vanishing point
Rank 2
Rank 2
Posts: 55
Joined: Wed Oct 12, 2005 11:13 am
Location: Surrey, BC

Re: Question for Q drivers

#31 Post by vanishing point » Wed Nov 05, 2014 10:21 am

Another "money-saving protocol" from the company.

I can't figure out how they went from "two-engine" taxi right into "one-engine-shutdown" taxi where before they wouldn't even do "one-prop-feathered" taxi like we do on the Classic.
---------- ADS -----------

PositiveRate27
Rank 7
Rank 7
Posts: 514
Joined: Sat Oct 06, 2012 8:27 am

Re: Question for Q drivers

#32 Post by PositiveRate27 » Wed Nov 05, 2014 11:32 am

Most likely an issue with that engine, no? I've never even seen them taxi with an engine feathered on the Q400, let alone shut down.
---------- ADS -----------

countryhick
Rank 4
Rank 4
Posts: 248
Joined: Sun Sep 28, 2008 9:12 am
Location: Down in Butlertown

Re: Question for Q drivers

#33 Post by countryhick » Wed Nov 05, 2014 11:56 am

I know there is/was a feasibility test wrt single engine taxi (ie fuel savings.....) on the Q, not sure if its SOP yet or still ongoing.
---------- ADS -----------

DHC-1 Jockey
Rank 5
Rank 5
Posts: 386
Joined: Mon Jan 28, 2008 6:41 pm

Re: Question for Q drivers

#34 Post by DHC-1 Jockey » Wed Nov 05, 2014 12:46 pm

Porter has been driving around with one engine shutdown for almost a year now I think. At least the times I saw them in YYZ due to IRROPS at YTZ.
---------- ADS -----------

User avatar
Canoehead
Rank 8
Rank 8
Posts: 846
Joined: Wed Jan 05, 2005 11:08 pm
Location: YEE 220 @ 4

Re: Question for Q drivers

#35 Post by Canoehead » Wed Nov 05, 2014 7:20 pm

SET-in (single engine taxi in) is now an approved procedure at Jazz on the Q.
SET-out is a possibility down the road, but it would require significant changes to current procedures.
---------- ADS -----------

PositiveRate27
Rank 7
Rank 7
Posts: 514
Joined: Sat Oct 06, 2012 8:27 am

Re: Question for Q drivers

#36 Post by PositiveRate27 » Thu Nov 06, 2014 12:47 am

Interesting. I haven't seen this YVR yet. I stand corrected!
---------- ADS -----------

User avatar
Canoehead
Rank 8
Rank 8
Posts: 846
Joined: Wed Jan 05, 2005 11:08 pm
Location: YEE 220 @ 4

Re: Question for Q drivers

#37 Post by Canoehead » Thu Nov 06, 2014 10:51 am

It was official as of November 1. You will see it phase in slowly as people get comfortable with it I imagine. It's quieter, less vibration and saves gas. On the flip side I'm not sure what it will do to the brake use as it doesn't like to stop/slow with discing as well as with two running.
---------- ADS -----------

JazzYVR
Rank 0
Rank 0
Posts: 3
Joined: Thu Feb 13, 2014 12:30 am
Location: YVR

Re: Question for Q drivers

#38 Post by JazzYVR » Tue Dec 23, 2014 9:30 pm

What are the procedures for landing with anti-ice on? Does the INCR REF switch have to be selected? Can it be switched off during the approach once clear of icing?

Thanks
---------- ADS -----------

prop2jet
Rank 7
Rank 7
Posts: 524
Joined: Thu Feb 17, 2005 11:50 am

Re: Question for Q drivers

#39 Post by prop2jet » Fri Dec 26, 2014 2:41 pm

JazzYVR wrote:What are the procedures for landing with anti-ice on? Does the INCR REF switch have to be selected? Can it be switched off during the approach once clear of icing?

Thanks
If you are in icing conditions and there is no visible ice on the wings you may select Increase Ref to OFF. This scenario would likely present itself when on approach, in cloud SAT 5 or below but above 0. The procedure is really only of significant value when operating onto a shorter runway. Though it may be anecdotal, the proedure was requested by Porter given the length of runway at YTZ and impact of operational performance with the added speed. As far as I know, it is only approved in Canada.
---------- ADS -----------

Plim Sole
Rank 3
Rank 3
Posts: 164
Joined: Thu Apr 12, 2007 10:26 pm

Re: Question for Q drivers

#40 Post by Plim Sole » Sat Dec 27, 2014 12:46 pm

Don't forget you also need to be 'stable' which everyone coveniently forgets. So if you are VMC and we have to be stable by 500' then you can't go REF switch off below 500' otherwise you would have a 15/20Kt speed change which means you are no longer stable.
---------- ADS -----------
If possible...Its better to stop then land...than land then stop!

Post Reply

Return to “Jazz Aviation LP - Air Canada Express”