US regulators have approved a detailed inspection plan to get Boeing 737 MAX planes flying againafter an emergency landing that has kept them on the ground since early January, security officials announced Wednesday.

Shortly after the Federal Aviation Administration (FAA) announced inspection protocols for the Boeing 737 MAX 9, United Airlines He said he expects the grounded planes to return to service from Sunday.

We will not return each MAX 9 aircraft to service until this extensive inspection process is complete” said a statement from Toby Enqvist, United’s chief operating officer.

“We are preparing the planes to return to scheduled service from Sunday.”

The FAA’s announcement is a significant step after the agency grounded 171 MAX 9 planes following the Jan. 5 incident involving an Alaska Airlines plane.

The immobilized 737 MAX aircraft are the same configuration as the Alaska Airlines plane that suffered a cracked fuselage panel. exposing passengers to the open air and forcing an emergency landing.

No one was injured in the incident, but safety inspectors say it could have been catastrophic.

Under the FAA’s “enhanced maintenance process,” airlines will conduct inspections of specific nuts and fittings, detailed visual inspections of sockets and components, and address “any damage or abnormal conditionthe FAA said.

The inspection will ensure that the parts “conform to the original design and are safe to operate,” the FAA said.

“This aircraft will not be operational until the process is completed and compliance with the original design is confirmed.” (JO)