The plane has been grounded worldwide since March.Credit:AP
The fast-selling 737 MAX has been grounded worldwide since mid-March while Boeing updatesflight control software at the centre of two fatal crashes in Indonesia and Ethiopia that togetherkilled 346 people within a span of five months.
American becomes the second major airline in a matter of days to extend the cancellation of Boeing 737 Max flights into December after United announced on Friday (US time) that it has removed the Max from its schedule until December 19,six weeks longer than previously planned.
United owns 14 Max jets,which have been grounded since March after the second of two accidents that together killed 346 people.
Boeing is targeting regulatory approval for the fixes in October,though the US Federal Aviation Administration has said it does not have a firm timeline to put the jets back in the air.
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Meanwhile,airlines that had purchased the fuel-efficient MAX have had to cancel thousands of monthly flights as they scramble to meet demand with slimmer fleets,eating in to profit and hurting some growth plans.
American Air,with 24 MAX jets at the time of the grounding and dozens more on order,said it will cancel about 140 daily flights through December 3,more than the 115 daily cancellations it was making through the summer.
It had previously pulled its 737 MAX jets from its flight schedule through November 2.