ATLANTA – Southwest Airlines canceled 70 flights yesterday as it continued to inspect Boeing 737 planes following the emergency landing on Friday of a jet with a hole in its fuselage.

Spokeswoman Whitney Eichinger said 70 flights systemwide were canceled for Monday out of about 3,400 daily flights. Of 79 Boeing 737-300 planes that were designated for additional inspections after the April 1 incident, 33 have been returned to service, she said. So far, inspections have turned up cracks in two other planes, Southwest said.

The government announced it would order emergency checks of certain older-model Boeing Co. 737s for the kind of fatigue cracks that prompted Southwest Airlines Co. to recently cancel hundreds of flights.