EASA AD DCA-750XL-19A
Engine Oil Pressure Indicator — Replacement
Summary
The Airworthiness Directive DCA/750XL/19A Engine Oil Pressure Indicator — Replacement issued by the Civil Aviation Authority of New Zealand mandates inspections and replacements related to the engine oil pressure indication system on Pacific Aerospace Limited 750XL aircraft. It applies to all serial numbers of the 750XL model and addresses issues with low oil pressure indication warnings. The directive includes updates to the Pilots Operating Handbook and replacement or modification of specific oil pressure switches and indicators.
What Changed
This amendment introduces updated revisions to the PAL 750XL Pilots Operating Handbook and clarifies the requirements for replacing or modifying the low oil pressure light switch and oil pressure/temperature indicator on affected aircraft. It also specifies part numbers for replacement components and provides detailed instructions from the Pacific Aerospace Mandatory Service Bulletin PACSB/XL/088.
Why It Matters
Compliance with Airworthiness Directive DCA/750XL/19A is critical to ensure accurate engine oil pressure readings, which are essential for safe aircraft operation. Operators and maintenance organizations must address these issues to prevent false low oil pressure warnings that could lead to unnecessary maintenance or, worse, undetected engine problems. Meeting these requirements helps maintain airworthiness and regulatory compliance for the Pacific Aerospace 750XL fleet.
What To Do
Operators must insert the specified temporary revisions into the PAL 750XL Pilots Operating Handbook by the effective date of 26 April 2018. They must replace or modify the low oil pressure light switch and replace the oil pressure/temperature indicator as detailed in the Pacific Aerospace Mandatory Service Bulletin PACSB/XL/088 at the next 150-hour scheduled maintenance inspection or by 30 June 2018, whichever occurs first.
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