Re: Maximum operating airport altitude for commercial jets
Back in the 70's Faucett airlines used to operate BAC 1-11's out of La Paz. These were the 475 variant with the big engine and big wing on the short body.
I was on an Oman Airforce 475 out of Saa'na in Yemen (about 7200ft I think) and the performance was not exactly good and we were empty, so 13000ft must be very interesting.
Hope this is of use.