Airworthiness directives › 2024-02-03
AD 2024-02-03 Airworthiness Directives; The Boeing Company Airplanes
Models named: 747-8, 747-8F series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
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.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
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.
Unsafe condition
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, and by a determination that indication of decaying airspeed in certain scenarios is required. The FAA is issuing this AD to address problems with the Electronic Flight Instrumentation System/Engine Indicating and Crew Alerting System (EICAS) Interface Units (EIUs), which control the IDUs. The unsafe condition, if not addressed, could result in loss of all flight deck displays (Primary Flight Display/EICAS/Navigation Display, not including standby displays) combined with potential impact to the autopilot and auto-throttle functionality and lack of crew visibility of any subsequent system failures, which can prevent continued safe flight and landing; it could also result in inadequate alerting of decaying airspeed, unacceptably low airspeed, and loss of control of the airplane.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1