India's aviation regulator has warned Air India for breaching safety rules after three of its Airbus planes flew despite being overdue checks on emergency equipment, and for being slow to address the issue,

For Boeing, the Paris Air Show has been a chance to listen to the industry, one Boeing executive says. "What do they think of us? It doesn’t matter what we think of us.”

The move came a day after Indian officials told the airline to improve its operations, and as delays and canceled flights are drawing complaints from passengers.