I don't know it seems more like a payload issue with the NGX, the way they have the two class layout or single class, it's obvious not every airline carries 145 passengers and 145 isn't the capacity of the 737-800 so hrm

Alrighty so all is working super with the NGX, really is a fantastic bird and really groundbreaking stuff... But for the Payload I notice it only allows in the single class /174 passengers, I regularly fly Ryanair and other low cost airline flights who use the 189 seating layout. Is there a way to change this to 189? Thanks in advance.

+1 Christian

I was wondering how we can synchronize the specs between the NGX, FSbuild and TopCat. I'm using these application for my flight planning. Somebody has a solution for this? Daniel Verhaal

I haven't tried it yet but I am planning on tinkering with my aircraft.cfg files to create a -700er and a -900er. As you know, ther -700er has more fuel than the -700 and the -900er has mor fuel plus pax. It is disturbing to fly the -900 which has no economic purpose you need the -900er. with this mod, I hope the fmc recognises the increase of fuel etc. It looks like it will be a good while until and if PMDG creates an update.

Don't expect it to work... just sayin'....

Wow, remind me to never fly Ryanair, sounds like your knees end up around your ears!

 

Sounds like Spirit but then again both airlines share a low two star rating (jetBlue on the other hand is just shy of 5 stars which is impressive considering their business model)

JetBlue on the other hand is just shy of 5 stars which is impressive considering their business model

 

 

I haven't tried it yet but I am planning on tinkering with my aircraft.cfg files to create a -700er and a -900er. As you know, ther -700er has more fuel than the -700 and the -900er has mor fuel plus pax. It is disturbing to fly the -900 which has no economic purpose you need the -900er. with this mod, I hope the fmc recognises the increase of fuel etc. It looks like it will be a good while until and if PMDG creates an update.

Alrighty... I made the mods however there is nothing I can do about the pax load; seems to be hard coded. I turned my -700 into a -700er with the nine fuel tanks version, this is the one that carries 48 pax. I went to the Boeing site and found the total fuel quanatity and added the difference to the center tank. Because its a lot more fuel, the position of the center tank has to be adjusted for or aft...The empty operating and MGW were also changed. The FMC recognized the increase of fuel and weight changes. In the first try with 48 pax loaded and enough fuel to make a MTOW takeoff, the CG was at 10% that was 8.5 units of trim!!! That goes back the point of not knowing where the new position of the center tank should go, that requires trial and error.

The moment of truth...takeoff...  I set up a dummy flight from KABQ to NFFN. I think because of the new weight bracket, the NGX's internal v speed chart cannot see any weight higher than the original for the -700. This rendered the QRH useless; therefore, the v speeds are not calculated for you. It is left blank so you will have to enter your own speeds. 

As for flight characteristics, of course the takeoff run would be longer. It took almost 12,000 ft to get me off the ground at MTOW. At KABQ that is pushing it on it longest runway, I nearly went off the runway! Another thing to note is the sluggish response from the engines, sorry no rocket takeoffs here.

The verdict.. The -700er can be done without too much effort (in my opinion, doesn't mean it is so). I will my -700er when I am desperate until PMDG comes out with (if they do) an update. Then again with the advent of the 777 i would not need a super long range 737.

Cheers!

So, did anyone ever think of the fact that passengers are simply weight?  Airframe plus payload equals ZFW.  If you set the equivalent payload of your 189 passenger sardine can, you'll get the same effect.

 

Assuming the FAA 170 pound standard, a full load is 32130 pounds of people.  Baggage assumptions vary by airline, but assuming about 70% check backs now, and those bags average about 40 pounds, that's an additional 5292 pounds.  That gives you an initial payload of 37422, plus any extra cargo you may be carrying.

 

Weight is weight - 30,000 pounds of feathers will affect the plane just as much as 30,000 pounds of passengers.  The passenger count or passenger load factor was just an extra feature they added to make it easier for those who didn't want to get into the complexities of dealing with weights directly.

 

Sometimes, it takes a moment to step back and realize you're getting lost in the details, when there's a high level answer.

So, did anyone ever think of the fact that passengers are simply weight?  Airframe plus payload equals ZFW.  If you set the equivalent payload of your 189 passenger sardine can, you'll get the same effect.

 

Assuming the FAA 170 pound standard, a full load is 32130 pounds of people.  Baggage assumptions vary by airline, but assuming about 70% check backs now, and those bags average about 40 pounds, that's an additional 5292 pounds.  That gives you an initial payload of 37422, plus any extra cargo you may be carrying.

 

Weight is weight - 30,000 pounds of feathers will affect the plane just as much as 30,000 pounds of passengers.  The passenger count or passenger load factor was just an extra feature they added to make it easier for those who didn't want to get into the complexities of dealing with weights directly.

 

Sometimes, it takes a moment to step back and realize you're getting lost in the details, when there's a high level answer.

I had thought about that possibility but was not sure if it could work. I will give it a shot-that is if the NGX uses 170 as the standard.

Sorry to say it might not work. There is a huge snag. This is the entry for the -900 which I want to become -900ER

 

station_load.0 = 4550.0, 19.7, 0.0, 2.0

station_name.0 = "For Cabin"

station_load.1 = 7000.0, -3.6, 0.0, 2.0

station_name.1 = "Mid Cabin"

station_load.2 = 4550.0, -30.3, 0.0, 2.0

station_name.2 = "Aft Cabin"

station_load.3 = 7200.0,  19.7, 0.0, 0.0

station_name.3 = "For Cargo"

station_load.4 = 7200.0, -28.5, 0.0, 0.0

station_load.5 = 0,-5.51, 0, 0.2, PhysicsBraking

station_load.6 = 0,-5.51, 0, 0.2, PhysicsAccel

station_load.7 = 0,-5.51, 0, 0.2, PhysicsIcing

station_name.4 = "Aft Cargo"

 

If you add up the cabin weights and divide by 170 you only get 94.7 pax. What to do....

I had thought about that possibility but was not sure if it could work. I will give it a shot-that is if the NGX uses 170 as the standard.

 

It doesn't matter if the NGX uses 170 or not.  All you need to do is figure out the total weight of 189 passengers and their bags, and add that into the Payload slot instead.  Ignore the passenger count and load factor functions entirely.  They gain you nothing as you're using a different method of loading the aircraft.