FAA has issued airworthiness directive 2022-05-04 for all Boeing 737-100s, -200s, -200Cs, -300s, -400s, -500s, -600s, -700s, -700Cs, -800s, -900 and -900ERs (except for 737-200s and -200Cs equipped with a certain flight control system) revising the limitations and operating procedures sections of the airplane flight manual to incorporate specific operating procedures for instrument landing system approaches, speed-brake deployment, go-arounds and missed approaches when in the presence of 5G C-Band interference as identified by Notices to Air Missions, effective Feb. 24, 2022.