Limitations on special Boeing 737-800 series
Good afternoon,
since days I observe a lot of Boeing 737-800 series deviating from their requested level by 2000/4000ft. RFL ist very often 370/390 or 380/400. The flights are conducted istead at 330/350 or 340/360.
Questions led to the short notice, that is due an advice from Boeing and because of stall buffet margin.
Has got anyone an idea what the exact reason is and If its insisted to change this by modification?
Thans very much indeed and happy landings...