B 737 Limitations

[cognomultani]

Hi folks , B 737\3\4\500 max cert altitude is 37000Ft , but I have red ,
(don't remember where ) that for ferry flights is 39000ft .
Is that a boeing certification or a company operation.
Thanks .

[selfin]

The CFMI engines are I believe rated to 35 000 ft, whereas the ac to 11 000 m (36 089 ft). Maybe someone can clear up my confusion on THAT issue, too.

[willfly380]

b737-234500 are upto 37000ft
b737-678900 are upto 41000ft

i dont think the ferry would be any different.

[a380-500]

As a matter or curiosity, what's the cab altitude of the 737NG at FL410? WHat's the max delta psi? (It tends to be typically 8.6 for most a/c flying there)