Is AD 2022-04-09 a recurring Airworthiness Directive?

No — AD 2022-04-09 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2022-04-09 apply to?

AD 2022-04-09 applies to Avox Systems Inc., Scott Aviation. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2022-04-09

one-time

Official AD 2022-04-09 · FR doc 2022-04146 · 2022-02-28 · appliance

Airworthiness Directives; AVOX System Inc. (Formerly Scott Aviation) Oxygen Cylinder and Valve Assemblies and Oxygen Valve Assemblies

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain AVOX System Inc. (formerly Scott Aviation) oxygen cylinder and valve assemblies, and oxygen valve assemblies, installed on but not limited to various transport airplanes. This AD was prompted by reports of cylinder and valve assemblies having oxygen leakage from the valve assembly vent hole, caused by the absence of a guide that maintains appropriate spacing between certain parts. This AD requires an inspection of the oxygen valve assemblies, and oxygen cylinder and valve assemblies, to determine the serial number of the valve, cylinder, and entire assembly. For assemblies and parts with certain serial numbers, this AD requires a detailed inspection for correct spacing of the gap between the bottom of the packing retainer and top of the valve body on the assemblies, and replacement of assemblies having unacceptable gaps. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2022-04-09 applies to

MakesAvox Systems Inc.Scott Aviation

Part-conditional — 89794077, 89794015, 891511-14, 806835-01, 807982-01, 808433-01, 807206-01.

Applies to AVOX Systems Inc. (formerly Scott Aviation) oxygen cylinder and valve assemblies (P/N 89794077, 89794015, 891511-14, 806835-01, 807982-01, or 808433-01) and oxygen valve assemblies/body and gage assemblies (P/N 807206-01), identified by part number rather than airframe model. These assemblies might be installed on, but are not limited to, Airbus A300, A310, A318, A319, A320, A321, A330, and A340 airplanes; ATR42 and ATR72 airplanes; and Boeing 747-8 series airplanes, as listed in paragraphs (c)(1) through (12) of the AD.

Whether AD 2022-04-09 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 2022-04-09 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.