Airworthiness directives › 2022-03-04
AD 2022-03-04 Airworthiness Directives; Viking Air Limited (Type Certificate Previously Held by Bombardier, Inc. and de Havilland, Inc.) Airplanes
Models named: DHC-6-1, DHC-6-100, DHC-6-200, DHC-6-300, DHC-6-400. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Viking Air Limited (type certificate previously held by Bombardier, Inc. and de Havilland, Inc.) Model DHC-6-1, DHC-6-100, DHC-6-200, DHC-6-300, and DHC-6-400 airplanes, all serial numbers, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) Within 30 days after the effective date of this AD, incorporate into the maintenance records required by 14 CFR 91.417(a)(2) or 135.439(a)(2) for your airplane the life limits, modification limits, and inspection or overhaul intervals in Viking Air Limited DHC-6 Twin Otter PSM 1-6-11, Airframe Airworthiness Limitations Manual, Revision 9, dated April 30, 2018 (Viking Air Limited PSM 1-6-11, Revision 9). (2) Before further flight after revising the maintenance records as required by paragraph (g)(1) of this AD, except as allowed under paragraph (h) of this AD, remove from service each part that has reached or exceeded its life limit and modify each part that has reached or exceeded its modification limit. (3) Before further flight after revising the maintenance records as required by paragraph (g)(1) of this AD, except as allowed under paragraph (h) of this AD, inspect or overhaul each part that has reached or exceeded its inspection or overhaul interval.
Unsafe condition
This AD was prompted by mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI identifies the unsafe condition as failure to comply with new and more restrictive airworthiness limitations, including tasks where range-based requirements have been changed to specific hours time-in-service (TIS) and flight cycle limits. The FAA is issuing this AD to prevent loss of structural integrity of certain parts. The unsafe condition, if not addressed, could result in loss of control of the airplane.
Affected ADs
This AD replaces the ADs specified in paragraphs (b)(1) through (3) of this AD. (1) AD 80-13-10, Amendment 39-3812 (45 FR 43155, June 26, 1980). (2) AD 80-13-12 R1, Amendment 39-4135 (46 FR 31251, June 15, 1981). (3) AD 2008-03-01 Amendment 39-15350 (73 FR 5729, January 31, 2008).
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