Flew on a BMA ATP in 1989 BHX-LHR on what was the first leg of a marathon BHX-LHR-MIA-MEX-ACA trip. Had a technical issue right after take off and diverted to EMA. So an hour into my journey I was further from my destination than when I'd started. Impressed that they served a quite good hot English Breakfast though on BHX-LHR although this was curtailed.
Journey involved an ATP, Pan Am 747 (I think a combi), Pan Am 727 and Mexicana 727.