The company's shares rose 3% in early trading and also lifted the stocks of other airlines, providing some relief to a sector that has been battered by thousands of flight cancellations and reschedules in the wake of the grounding. American Airlines, which has already pulled the MAX off its flying schedule through Sept. 3, had in April cut its annual profit forecast, blaming an estimated $350 million hit from the groundings. The company, which has the second-biggest fleet of MAX aircraft in the United States with 24 jets, now expects unit revenue, a measure that compares sales to flight capacity, to increase between 3% and 4% percent in the quarter ended June, compared with its earlier forecast of a rise of between 1% and 3%.