Flight Controls — Worn Elevator Cables - Inspection
- Published
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AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must inspect elevator cables for abnormal wear at the STA 270.3 pulley location whenever replacing cables that have reached their life limit. If wear is found, the pulley must be replaced before the aircraft is flown again. All actions must be performed according to Viking Air Ltd. Service Bulletin V6/0062 Revision NC or later approved revisions, effective from 2018-10-29.
Summary
Canadian Airworthiness Directive CF-2018-28 addresses worn elevator cables on Viking Air Ltd. DHC-6 series aeroplanes, including models -1, -100, -110, -200, -210, -300, -310, -320, and -400. The directive mandates inspections for excessive wear at the STA 270.3 pulley location to prevent cable failure and potential loss of aircraft control. It applies to all serial numbers of the affected aircraft.
What changed
This new Airworthiness Directive introduces mandatory inspections of elevator cables for abnormal wear at the STA 270.3 pulley during cable replacement at life limit. If abnormal wear is detected, the corresponding pulley must also be replaced before further flight. The inspections and replacements must follow Viking Air Ltd. Service Bulletin V6/0062 Revision NC or later approved revisions.
Why it matters
This directive is critical for aviation professionals as it addresses a safety risk where worn elevator cables can fail in flight, potentially causing loss of control. Operators and maintenance organizations must ensure compliance to avoid emergency situations and maintain airworthiness. Compliance helps prevent costly incidents and enhances flight safety for the affected DHC-6 aircraft fleet.
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