Airworthiness directives › 2019-01-04
AD 2019-01-04 Airworthiness Directives; The Boeing Company Airplanes
Models named: 787 series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to all The Boeing Company Model 787 series airplanes, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) For Boeing Model 787 series airplanes that have an original certificate of airworthiness or export certificate of airworthiness issued on or before the effective date of this AD: Within 12 months after the effective date of this AD, inspect the flight management system (FMS) to determine if operational program software (OPS) part number (P/N) HNP5F-AL11-5010 or HNP58-AL11-5006 is installed. A review of airplane maintenance records is acceptable in lieu of this inspection if the part number of the FMS OPS can be conclusively determined from that review. (2) If, during any inspection or records review required by paragraph (g)(1) of this AD, FMS OPS P/N HNP5F-AL11-5010 or HNP58-AL11-5006 is found: Within 12 months after the effective date of this AD, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin B787-81205-SB340038-00 RB, Issue 001, dated November 16, 2017; except where Boeing Alert Requirements Bulletin B787-81205-SB340038-00 RB, Issue 001, dated November 16, 2017, specifies installing 34 FMS OPS Block Point 3B, P/N HNP5E-AL11-5011, this AD requires installing P/N HNP5E-AL11-5011 or later-approved software versions. Later-approved software versions are only those Boeing software versions that are approved as a replacement for the applicable software, and are approved as part of the type design by the FAA or the Boeing Commercial Airplanes Organization Designation Authorization (ODA) after issuance of Boeing Alert Requirements Bulletin B787-81205-SB340038-00 RB, Issue 001, dated November 16, 2017. Note 1 to paragraph (g) of this AD: Guidance for accomplishing the actions required by paragraph (g) of this AD can be found in Boeing Alert Service Bulletin B787-81205-SB340038-00, Issue 001, dated November 16, 2017, which is referred to in Boeing Alert Requirements Bulletin B787- 81205-SB340038-00 RB, Issue 001, dated November 16, 2017.
Unsafe condition
This AD was prompted by a report of an uncommanded descent and turn that occurred after an inflight switch to the spare flight management function (FMF), due to the retention of stale flight data in the spare FMF. We are issuing this AD to address the retention of stale flight data in the spare FMF, which, if not addressed, could result in controlled flight into terrain or a mid-air collision.
Affected ADs
None.
Read the original on the Federal Register →
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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