Airworthiness directives › 2018-17-09
AD 2018-17-09 Airworthiness Directives; Bombardier, Inc., Airplanes
Models named: DHC-8-400, -401, -402. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Bombardier, Inc., Model DHC-8-400, -401, and -402 airplanes, certificated in any category, serial numbers 4001, 4003 and subsequent.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 30 days after the effective date of this AD, revise the maintenance or inspection program, as applicable, to incorporate the information specified in Certification Maintenance Requirements (CMR) task number 323100-102 of Q400 Dash 8 (Bombardier) Temporary Revision (TR) ALI-0168, dated October 31, 2016 (“Bombardier TR ALI-0168”). The applicable maintenance or inspection program revision required by this paragraph may be done by inserting a copy of Bombardier TR ALI-0168, to Section 1-32, Landing Gear Maintenance Program, of Maintenance Review Board (MRB) Report Part 2, Bombardier Q400 Dash 8 Maintenance Requirements Manual, Product Support Manual (PSM) 1-84-7. When this temporary revision has been included in general revisions of the PSM, the general revisions may be inserted in the maintenance or inspection program, as applicable, provided the relevant information in the general revision is identical to that in Bombardier TR ALI-0168.
Unsafe condition
This AD was prompted by reports of excessive wear on the lower latch surface of the main landing gear (MLG) up-lock hook. This AD was also prompted by a determination that, the maintenance or inspection program, as applicable, must be revised to include a new task. We are issuing this AD to detect and correct up-lock hooks worn beyond the wear limit, which could prevent the successful extension of the MLG using the primary landing gear extension system, which in combination with an alternate extension system failure could result in the inability to extend the MLG.
Affected ADs
This AD replaces AD 2014-05-28, Amendment 39-17800 (79 FR 18611, April 3, 2014).
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