Superseded. This AD was superseded by AD 2023-12-14. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2022-06-16
Effective 03/16/2022 · Published 03/16/2022
Airworthiness Directives; The Boeing Company Airplanes
Summary
The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, and 747-400F series airplanes. This AD was prompted by a determination that radio altimeters cannot be relied upon to perform their intended function if they experience interference from wireless broadband operations in the 3.7-3.98 GHz fre…