AD 2018-04-09 Airworthiness Directives; Pacific Aerospace Limited Airplanes

Makes named: pacific aerospace. Models named: 750XL. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to Pacific Aerospace Limited Model 750XL airplanes, all serial numbers up to XL217, certificated in any category.

Unless already done, do the following actions in paragraphs (f)(1) through (4) of this AD, as applicable: (1) For airplanes with Pilots Operating Handbook (POH) AIR 2825: Within the next 30 days after April 12, 2018 (the effective date of this AD), insert Pacific Aerospace temporary revisions XL/POH/00/001, XL/POH/02/001, and XUPOH/03/001, into the Pacific Aerospace Limited (PAL) 750XL POH AIR 2825 as specified in Pacific Aerospace Temporary Revision Instruction Letter, dated August 2017. (2) For airplanes with Pilots Operating Handbook (POH) AIR 3237: Within the next 30 days after April 12, 2018 (the effective date of this AD), insert Pacific Aerospace temporary revisions XL/POH/00/001, XUPOH/02/001, XUPOH/03/001, and XUPOH/03/002, into the PAL 750XL POH AIR 3237 as specified in Pacific Aerospace Temporary Revision Instruction Letter, dated August 2017. (3) For Pacific Aerospace 750XL airplanes up to serial number XL217: Within the next 100 hours time-in-service (TIS) after April 12, 2018 (the effective date of this AD) or within the next 12 months after April 12, 2018 (the effective date of this AD), whichever occurs first, replace the pressure switch for the low oil pressure light per the instructions in Part A of Pacific Aerospace Limited Mandatory Service Bulletin (PALMSB) PACSB/XL/088, dated August 11, 2017. (4) For Pacific Aerospace 750XL airplanes up to serial number XL217 fitted with PIN INS 60-8 oil pressure/temperature indicator: Within the next 100 hours TIS after April 12, 2018 (the effective date of this AD) or within the next 12 months after April 12, 2018 (the effective date of this AD), whichever occurs first, replace the oil pressure/temperature indicator per the instructions in Part B of PALMSB PACSB/XL/088, dated August 11, 2017.

The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, Small Airplane Standards 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: Mike Kiesov, Aerospace Engineer, FAA, Small Airplane Standards Branch, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4144; fax: (816) 329-4090; email: mike.kiesov@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, Small Airplane Standards Branch, FAA; or The Civil Aviation Authority (CAA), which is the aviation authority for New Zealand.

This AD was prompted by mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as incorrectly marked and annunciated low oil pressure indication warnings. We are issuing this AD to prevent engine oil pressure from dropping below safe limits, which could cause possible engine damage or failure.

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