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Airworthiness Directive 2026-00357

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AD 2026-00357 · 2026-01-12 · airframe

Airworthiness Directives; Baykar Piaggio Aerospace S.p.A. (Type Certificate Previously Held by Piaggio Aviation S.p.A.) Airplanes

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain Baykar Piaggio Aerospace S.p.A. (type certificate previously held by Piaggio Aviation S.p.A.) (Piaggio) Model P-180 airplanes. This AD was prompted by a report of leakage from the flexible hydraulic hoses connected to the hydraulic pump package (HPP). This AD requires replacing the affected flexible hydraulic hoses. This AD also prohibits installing the affected flexible hydraulic hoses on any airplane. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2026-00357 applies to

MakesPiaggio Aerospace

Extracted applicability text is not the clean applicability paragraph but preamble/comment-response discussion; it states the AD applies only to airplanes known to have affected hydraulic flexible hoses installed, with serial number ranges specified in paragraph (c) not captured in this excerpt. References Piaggio Aerospace Service Bulletin 80-0497, Revision 0, dated March 5, 2025, for replacing affected flexible hydraulic hoses with hoses having a non-metallic, non-conductive abrasion sleeve to prevent arcing/electrostatic discharge near the HPP body. No specific model number is stated in the extracted text, so model fields are left blank rather than inferred.

Whether AD 2026-00357 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

How AD compliance is recorded

A valid compliance record (14 CFR 43.9) states:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.
Date — When the work was done.
Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.
Signature & certificate — The A&P/IA who returned it to service, with certificate number.
Is AD 2026-00357 complied with on your aircraft?

Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.

Look up a tail number →Read the full directive (Federal Register)

Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.