0000950153-01-500096 DEF 14A 1 20010327 20010309 MESA AIR GROUP INC 0000810332 4512 850302351 NV 0930 DEF 14A 34 000-15495 1564569 410 NORTH 44TH STREET SUITE 700 PHOENIX AZ 85008 6026854000 410 NORTH 44TH STREET SUITE 700 PHOENIX AZ 85008 MESA AIRLINES INC 19950426 DEF 14A 1 p64721def14a.txt DEF 14A