WASHINGTON >> The Federal Aviation Administration has completed a safety review of Southwest Airlines, which opened in July, after a series of incidents, including some that raised serious concerns and led to investigations.

The review “did not identify any significant safety issues,” the FAA said this month.

Southwest said it appreciated the opportunity to work with the FAA “as part of our shared commitment to safety.”

The FAA began the review after a Southwest plane flew at low altitude over Tampa Bay, Florida, in July, one of several flights that raised questions about the airline’s safety practices.

Other incidents followed, including an April flight that came within about 400 feet of the ocean off Hawaii after the first officer accidentally pushed the control column forward and the plane reached a maximum descent rate of about 4,400 feet per minute.

The FAA is also investigating another very low altitude flight that crashed at about 500 feet about 9 miles from its destination airport in Oklahoma.

The US National Transportation Safety Board and the FAA are also investigating a May 25 737 MAX flight that experienced a “dutch roll” at 34,000 feet en route from Phoenix to Oakland, California.

Such lateral asymmetrical movements are named after a Dutch ice skating technique and can pose a serious safety risk.

The FAA is also investigating a June flight that took off from a closed runway in Portland, Maine.

Southwest told pilots in September that it would hold a safety day for them on a staggered basis through early 2025, allowing for open discussions without fear of retaliation, including “an in-depth, moderated, peer-to-peer discussion of specific events.”

The FAA said in October it found no significant safety problems during a similar review of United Airlines after a series of incidents and ended its enhanced oversight and approval processes for that airline’s addition of planes and services.

Southwest did not face the same restrictions. FAA Administrator Mike Whitaker said in September that Southwest’s review was “a little narrower” than United’s review.