Airworthiness Directive · Amendment 39-22667 · Instruments
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 747-8 and 747-8F series airplanes, certificated in any category, as identified in Boeing Alert Requirements Bulletin 747-31A2544 RB, dated March 31, 2020.
The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 747-8 and 747-8F series airplanes. This AD was prompted by a report that all six Integrated Display Units (IDUs) became blank when new flight plan data was entered in the Flight Management System (FMS), and by a determination that indication of decaying airspeed in certain scenarios is required. This AD requires installing updated software. The FAA is issuing this AD to address the unsafe condition on these products.
Except as specified by paragraph (h) of this AD: At the applicable times specified in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 747-31A2544 RB, dated March 31, 2020, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 747-31A2544 RB, dated March 31, 2020.
Note 1 to paragraph (g): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin 747-31A2544, dated March 31, 2020, which is referred to in Boeing Alert Requirements Bulletin 747-31A2544 RB, dated March 31, 2020.
(1) Where the Compliance Time column of the table in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 747-31A2544 RB, dated March 31, 2020, uses the phrase “the original issue date of Requirements Bulletin 747-31A2544 RB,” this AD requires using “the effective date of this AD.”
(2) For Group 2 airplanes identified in Boeing Alert Requirements Bulletin 747-31A2544 RB, dated March 31, 2020: The concurrent requirements specified in Action 1 of Table 1 of the Accomplishment Instructions of Boeing Alert Requirements Bulletin 747-31A2544 RB, dated March 31, 2020, do not apply.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
