Nov 7 (Reuters) - American Airlines ( AAL ) CEO Robert Isom does

not expect significant disruption for customers from initial

government-ordered flight reductions, he said on Friday, warning

that increased cuts will be "problematic".

The airline is cutting 4% of flights at 40 high-traffic

airports. The Federal Aviation Administration said that must

rise to 6% on Tuesday before hitting 10% on November 14.

"This level of cancellation is going to grow over time and

that's something that is going to be problematic," Isom told

CNBC said.