** Shares of Mesa Air Group Inc MESA.O down nearly 25%
at$1.55, set for its biggest one-day fall since December, if
losses hold
** Co on Tuesday reported Q2 adj loss per share of $0.53 vs
analysts' estimates of $0.27, as per Refinitiv data
** MESA says the results reflect the ongoing transition of
its Bombardier CJR-900 fleet from American Eagle to United
Express
** Q2 revenue of $121.83 mln below analysts' estimates of
$138.72 mln
** YTD, shares have risen 1.96% vs a 3.8% gain in S&P 500
Passenger Airlines Index .SPLRCAIR
(Reporting by Ananta Agarwal in Bengaluru)
((Ananta.Agarwal@thomsonreuters.com))