EASA AD DCA-750XL-21
Wing Lightning Protection Panels - Inspection
Summary
Airworthiness Directive DCA/750XL/21 Wing Lightning Protection Panels - Inspection is issued by the Civil Aviation Authority of New Zealand and applies to all Pacific Aerospace 750XL aircraft serial numbers fitted with wing lightning protection panels. This directive mandates an electrical bonding inspection of the wing lightning protection panels to ensure proper lightning protection of the fuel tanks. The inspections must be carried out according to Pacific Aerospace Mandatory Service Bulletin PACSB/XL/092 issue 2 or later revisions.
What Changed
This new Airworthiness Directive introduces mandatory bonding verification tests on both upper and lower surfaces of short range and long range wings of the Pacific Aerospace 750XL aircraft. It specifies resistance limits and repair instructions if electrical bonding resistance exceeds 100 milliohms or if an open circuit is detected. The directive enforces compliance with the detailed procedures in the referenced service bulletin.
Why It Matters
This directive is critical for maintaining the safety and airworthiness of Pacific Aerospace 750XL aircraft by ensuring effective lightning protection of fuel tanks. Operators, maintenance organizations, and compliance teams must address potential electrical bonding deficiencies to prevent unsafe conditions that could compromise aircraft safety. Timely inspections and repairs help mitigate risks associated with lightning strikes during flight.
What To Do
Operators of Pacific Aerospace 750XL aircraft must perform bonding verification tests on wing lightning protection panels as detailed in the specified service bulletin. For aircraft operating under IFR, the inspection must be completed before further flight. For aircraft operating under VFR, compliance is required by 15 February 2018. Any bonding resistance above 100 milliohms or open circuits must be repaired following the service bulletin instructions.
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