Airworthiness Directive 2019-10-06

one-time
Official AD 2019-10-06 · FR doc 2019-12621 · 2019-06-17 · airframe

Airworthiness Directives; Aviat Aircraft Inc. Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Aviat Aircraft Inc. Models A-1C-180 and A-1C-200 airplanes equipped with a Rapco part number RA1798-00-1 fuel vent check valve installed on either wing or both. This AD was prompted by a report that the fuel tank vent check valves are sticking in the closed position causing fuel starvation to the engine. This AD requires revision of the airplane flight manual (AFM) to add a pre-flight check of the fuel vent check valves for proper operation and replacing any inoperative fuel vent check valve with an airworthy part. We are issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2019-10-06 applies to

MakesAviat Aircraft Inc.
ModelsA-1C-180, A-1C-200, A-1C
Serial-conditional — narrows to serials 3181–3282.
Part-conditionalRA1798-00-1.

Applies only to airplanes equipped with a Rapco part number RA1798-00-1 fuel vent check valve installed on one or both wings.

Whether AD 2019-10-06 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 complianceThe specific action taken (inspected, replaced, modified) and to what revision.
DateWhen the work was done.
Aircraft timeTotal time in service / tach at compliance — how recurring next-due is computed.
Signature & certificateThe A&P/IA who returned it to service, with certificate number.
Is AD 2019-10-06 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.