Hi,

 

I don´t fly much on the 737-900, but i fly a lot on the 738, and today i decided to fly the 900, and when i was entering the payload i noticed the MTW was 79.2 and the engine rating was 26k, i mean , i think it´s the same as the 800, and i was wondering if the 800 and 900 have different MTW´s and engine ratings. And the MTW on my 900 is correct(79.2 )? And also the engine rating of 26K

 

Hamilton

the baseline -900 has the exact same MTOW as the -800. The -900ER is the one that has 185,000lb+ (somewhere around there) MTOW. We are still waiting on that expansion from PMDG

 

http://www.boeing.com/commercial/airports/acaps/737sec2.pdf

 

From the boeing website. All the 737 versions and all the weight options. -800, -900, -900ER are on pages 11,12,13

To go slightly off topic, i use topcat, and while the data for the 800 including the N1 matches perfectly 9.8/10 times, (the other times its off by about .1 or .2% N1), one would assume that if the 900 has the same weight limits and the same 26K engines as the 800 the performance data given by topcat would correspond to what you would see on the engine displays, but i notice its not, the N1 data is way off every time on the 900 displays. Did PMDG mess up the data on the 900 model somewhere causing incorrect N1 limits for given conditions or is there more to it than having the same weight limits and engine thrust ratings as the 800.

1: Longer planes like the -900 usually require different v-speeds to help with avoiding tail strikes. Therefore different takeoff thrust settings are needed even with the same 26k thrust as the -800.

 

2: I believe topcat was made with the previous FS9 NG product in mind. So numbers may be off. I would trust PMDG with the NGX since they have all of the data from Boeing