MATOW and Maximum weight for Takeoff

[Olendirk]

Hi Guys!

Whats the difference between those two weights?

cheers

od

[redsnail]

I am not familiar with the first abbreviation but it looks like RTOW (ie regulated take off weight). This is the weight you come up with for the conditions of the day. Ie runway length, temperature, wind, etc. It is performance driven.
The MTOW is the structural weight the aircraft can physically carry. This cannot be increased.

*note, in JAA land, weight should read mass*

[Pauliejet]

Just to clarify further, aircraft are limited by RTOW (regulated take off weight).
This is defined as the LOWER of MTOW (Maximum Structural Take Off Weight,fixed figure) and PLTOW (Performance Limited Take Off Weight, variable with temp, density altitude, runway length, physical decrements to aircraft, big hills at runway end etc)

Generally, in large aircraft, operating from long runways, MTOW tends to be more limiting.

Best Wishes