Engine debris from the plane broke a window...
This is not the first call for inspections of this type of engine aboard Boeing 737 aircraft. A cycle includes one take-off and landing.
"About 60 customers worldwide operate engines within the cyclic thresholds of the new service bulletin", CFM stated.
A cycle concerns a complete flight, from engine start to takeoff and landing to complete shutdown.
The odds of losing your life while flying on a commercial airplane are 1 in 7 million. CFM, which is jointly owned by General Electric Co and France's Safran, produces the CFM56 engine in factories based both in the United States and in Europe.
Pieces of the aircraft were found in rural Pennsylvania by investigators who tracked them on radar.
Airlines don't expect the emergency inspections to disrupt travel times.
Four Palestinians killed in clashes at Gaza border
Yesterday's protest was dubbed "Friday of Kites", with protests flying messages to Israel on the border. An Israeli military spokeswoman would not comment on whether an investigation had been opened.
"In other parts of the world, these regulations have already been in place", said Emily McNutt, a news writer at The Points Guy. It won't be clear until the FAA issues its ruling how many will need inspections.
The Federal Aviation Administration (FAA) stepped in and ordered all airlines to inspect fan blades on engines similar to the one involved in that deadly explosion. About 14,000 CFM56-7B engines are in operation.
The CFM56 engine on Southwest flight 1380 blew apart over Pennsylvania on Tuesday, about 20 minutes after the Dallas-bound flight left New York's LaGuardia Airport with 149 people on board. The fuselage and the entire cabin suffered from the rapid loss of pressure. The NTSB said the mother of two was wearing her seat belt when she was partially sucked out of the plane.
So far Sky Harbor's website lists at least 20 Southwest cancellations for Monday morning.
"There was no evidence of any fire on the aircraft", Oakland Airport spokesman Keonnis Taylor said.
That announcement came as federal air safety officials warned the same fan blade problem could occur on other similar jet engines.
"I think they're looking out for people's safety and not just the economy", said passenger Joan Laedie.
Some 8,000 Boeing 737s - including nearly all of Southwest's fleet - fly CFM56-7B engines.