Question for E-170/190 drivers
09-02-2009, 12:05 PM
#11
Gets Weekends Off
Joined APC: Dec 2008
Position: E-170 Airbender
Posts: 341
Now with the help of Frontier, Midwest, and our own pilots, lets strive for a great contract flying the 170/190.
Oh, if you use CON for cruise flight, you are too high. Do not use it unless single engine
09-02-2009, 06:46 PM
#12
looking for underboob
Joined APC: Aug 2007
Position: NYC 7ER LCA
Posts: 902
if you are flying in cruise with the LIM on you will also have the eyebrows up...you might be to high for cruise.
If you are increasing speed once you level off the CLIMB 1 will be enough to get the LIM to go away
If you are increasing speed once you level off the CLIMB 1 will be enough to get the LIM to go away
09-02-2009, 07:15 PM
#14
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Joined APC: Aug 2008
Posts: 127
2. Kinda a vauge question. But I think people were using this setting to climb faster at a set speed. Or using it to get to cruise speed faster when leveling off. I wouldn't recommend it.
There is a reason for 2 different settings. CON is for max continuous. CRZ is for cruise. If they were interchangeable, then there wouldn't be 2 settings. Fly by the book. The only time we call for CON is in a single engine operation.
09-03-2009, 03:43 AM
#15
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09-03-2009, 05:05 AM
#16
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Joined APC: Jun 2008
Posts: 310
Why would you want to cruise at a speed that requires CON power anyway? What's the rush, unless it is the last leg? Plus, I've never had a problem cruising at Mach .81, so I don't see a reason why CON would ever get used in normal ops.
09-03-2009, 05:53 AM
#17
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09-03-2009, 05:58 AM
#18
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Joined APC: Aug 2006
Position: E170 CA
Posts: 200
My company's SOPs have normal cruise limited to M.78 or less, for improved fuel economy and less wear and tear. Economy cruise is usually slower than that, depending on cruise alt, weight, etc. CON should be used only in emergency situations...that is its sole purpose. It is normal for us to see LIM briefly upon level off at cruise, but just for a few moments as the speed catches up. Hope this helps
09-03-2009, 06:32 AM
#19
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Joined APC: May 2006
Posts: 394
The only time I've used CON power is in the sim when it's called for on a single engine climb out. We use climb 1 on a pretty regular basis and only get LIM if we're climbing in V/S or FPA modes. You won't get LIM in FLCH mode. The 170 climbs a lot better than the 175 when we're heavy, so you will normally see LIM in the 175 when you're trying to maintain 290 in the climb and at least 1500'/minute above 27K or so.
CON is an emergency power setting only according to Embraer. If someone is selecting CON to solve a cruise or climb speed issue, I suggest they refer to the performance manual for gross weight limitations.
09-03-2009, 06:35 AM
#20
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Joined APC: Apr 2008
Position: 757/767
Posts: 588
From Embraer
I don't think "LIM" on the FMA qualifies as and "emergency situation".
MAXIMUM CONTINUOUS RATING (CON)
The maximum continuous thrust is to be used on emergency situation
where thrust higher than usual is required.
It is the highest thrust the engines can operate continuously without
reducing the time between overhauls.
The maximum continuous thrust is to be used on emergency situation
where thrust higher than usual is required.
It is the highest thrust the engines can operate continuously without
reducing the time between overhauls.
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