Airworthiness directives › 2018-04-02
AD 2018-04-02 Airworthiness Directives; Viking Air Limited 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 Models 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
Unless already done, do the following actions in paragraphs (f)(1) through (5) of this AD: (1) Within the next 50 hours time-in-service (TIS) after March 27, 2018 (the effective date of this AD) or before the aileron cables have accumulated 300 hours TIS, whichever occurs later, inspect the aileron cables following the Accomplishment Instructions in Viking Air Limited Service Bulletin V6/0022, Revision B, dated June 13, 2014 (SB V6/0022, Revision B). Inspect repetitively thereafter at intervals not to exceed 500 hours TIS, but not to exceed five inspections (the initial and four repetitives). (2) If any discrepancies are found during any of the inspections required in paragraph (f)(1) of this AD, before further flight, replace the aileron cable(s) following the Accomplishment Instructions in SB V6/0022, Revision B. (3) Upon completion of the initial and four repetitive inspections detailed in paragraph (f)(1) of this AD, resume the inspections specified in the maintenance program. (4) Within 30 days after completion of each inspection detailed in paragraph (f)(1) of this AD, report the results of each inspection to Viking Air Limited in accordance with the reporting instructions in SB V6/0022, Revision B. (5) Installation of new aileron cables or re-installation of existing cables that have been removed for any reason re-starts the inspections required in paragraph (f)(1) of this AD.
Required actions
The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, New York ACO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: James Delisio, Program Manager, Continued Operational Safety, FAA, New York ACO Branch, 1600 Stewart Avenue, Westbury, New York 11590; telephone: (516) 228-7300; fax: (516) 794-5531; email: 9-avs-nyaco-cos@faa.gov . Before using any approved AMOC on any airplane to which the AMOC applies, notify your appropriate principal inspector (PI) in the FAA Flight Standards District Office (FSDO), or lacking a PI, your local FSDO. (2) Contacting the Manufacturer: For any requirement in this AD to obtain corrective actions from a manufacturer, the action must be accomplished using a method approved by the Manager, New York ACO Branch, FAA; or Transport Canada; or Viking Air Limited's Transport Canada Design Approval Organization (DAO). If approved by the DAO, the approval must include the DAO-authorized signature. (3) Reporting Requirements: For any reporting requirement in this AD, a federal agency may not conduct or sponsor, and a person is not required to respond to, nor shall a person be subject to a penalty for failure to comply with a collection of information subject to the requirements of the Paperwork Reduction Act unless that collection of information displays a current valid OMB Control Number. The OMB Control Number for this information collection is 2120-0056. Public reporting for this collection of information is estimated to be approximately 5 minutes per response, including the time for reviewing instructions, completing and reviewing the collection of information. All responses to this collection of information are mandatory. Comments concerning the accuracy of this burden and suggestions for reducing the burden should be directed to the FAA at: 800 Independence Ave. SW, Washington, DC 20591, Attn: Information Collection Clearance Officer, AES-200.
Unsafe condition
This AD was prompted by mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and address an unsafe condition on an aviation product. The MCAI describes the unsafe condition as aileron cable wear; fouling at the wing root rib, fuselage skin, and wing root rib fairlead; and/or fraying of the cable from the root rib fairlead. We are issuing this AD to identify and address wear on the aileron cable fuselage skin cut-out and on the wing root rib fairlead, and any fraying of the cable from the root rib fairlead, which could lead to failure of the aileron cable and loss of control.
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