Airworthiness Directive · Amendment 39-22556 · Airframe
Viking Air Limited (Type Certificate Previously Held by Bombardier Inc. and de Havilland Inc.) Airplanes
This AD applies to Viking Air Limited (type certificate previously held by Bombardier Inc. and de Havilland Inc.) Model DHC-2 Mk. I, DHC-2 Mk. II, and DHC-2 Mk. III airplanes, all serial numbers, certificated in any category.
The FAA is superseding Airworthiness Directive (AD) 64-09-03, which applied to all de Havilland (type certificate now held by Viking Air Limited (Viking)) Model DHC-2 "Beaver" airplanes. AD 64-09-03 required inspecting the aileron mass balance weight arms for cracks and corrosion and replacing any damaged part. Since the FAA issued AD 64- 09-03, Transport Canada superseded its mandatory continuing airworthiness information (MCAI) to correct an unsafe condition on these products. This AD requires incorporating into the existing maintenance records for your airplane the actions and associated thresholds and intervals, including life limits, specified in a supplemental inspection and corrosion control manual for Model DHC-2 airplanes. This AD also requires completing all of the initial tasks identified in this manual and reporting certain corrosion findings to Viking. The actions in this supplemental inspection and corrosion control manual include the inspection of the aileron balance weight arms required by AD 64-09-03. The FAA is issuing this AD to address the unsafe condition on these products.
(1) Within 90 days after the effective date of this AD, incorporate into the existing maintenance records required by 14 CFR 91.417(a)(2) or 135.439(a)(2), as applicable for your airplane, the actions and associated thresholds and intervals, including life limits, specified in Parts 2 and 3 of Viking DHC-2 Beaver Supplemental Inspection and Corrosion Control Manual, PSM 1-2-5, Revision 1, dated January 10, 2019 (Viking PSM 1-2-5, Revision 1). Do each initial task within 6 months after the effective date of this AD or at the threshold for each applicable task specified in Part 3 of Viking Product Support Manual PSM 1-2-5, Revision 1, whichever occurs later. Where Viking PSM 1-2-5, Revision 1, specifies contacting Viking for instructions on forward and rear fin attachment bolt replacement, inspection, and installation, and for a disposition regarding attachment bolts, this AD requires contacting the Manager, International Validation Branch, FAA; or Transport Canada; or Viking's Transport Canada Design Approval Organization (DAO). If approved by the DAO, the approval must include the DAO-authorized signature.
Note 1 to paragraph (g)(1): Viking DHC-2 Beaver Service Bulletin V2/0011, Revision NC, dated November 28, 2019, contains additional information related to this AD.
(2) After the action required by paragraph (g)(1) of this AD has been done, no alternative actions and associated thresholds and intervals, including life limits, are allowed unless they are approved as specified in paragraph (i) of this AD.
(1) For inspections done after the effective date of this AD, report to Viking any Level 2 or Level 3 corrosion, as specified in Viking PSM 1-2-5, Revision 1, at the times specified in and in accordance with part 3, paragraph 5, of Viking PSM 1-2-5, Revision 1.
(2) For inspections done before the effective date of this AD, within 30 days after the effective date of this AD, report to Viking any Level 2 or Level 3 corrosion, as specified in Viking PSM 1-2-5, Revision 1, in accordance with part 3, paragraph 5, of Viking PSM 1-2-5, Revision 1.
