WASHINGTON, March 11 (Reuters) - The Federal Aviation

Administration said on Tuesday it was extending prohibitions

barring U.S. flights to the Haitian capital Port-au Prince

through September 8, citing risks from armed gangs.

In November, the FAA temporarily halted all flights to Haiti

but later allowed U.S. flights to resume to six airports in

northern Haiti after three U.S. commercial jetliners were struck

by gunfire. The restrictions had been set to expire Wednesday.