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Airworthiness Directive 2024-16-19

recurring
Official AD 2024-16-19 · FR doc 2024-22929 · 2024-10-04 · airframe

Airworthiness Directives; Bell Textron Inc. Helicopters

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain Bell Textron Inc. Model 212, 412, 412CF, and 412EP helicopters. This AD was prompted by reports of cracked tail boom attachment barrel nuts (barrel nuts). This AD requires replacing all steel alloy barrel nuts with nickel alloy barrel nuts, replacing or inspecting other tail boom attachment point hardware, repetitively inspecting torque, and repetitively replacing tail boom attachment bolts (bolts). This AD also prohibits installing steel alloy barrel nuts. The FAA is issuing this AD to address the unsafe condition on these products.

Repetitive inspection. Re-inspect. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 2024-16-19 applies to

MakesBell Textron Inc.
Models412CF, 412EP, 212, 412
Serial-conditional — narrows to serials 30501–30603, 30611–30753, 30755–30889, 30891–30999, 31101–31162, 31164–31311, 32101–32142, 35001–35103, 46400–46499, 33001–33078, 33080–33129, 33131–33138, 33150–33213, 36001–36687, 36689–36999, 37002–37018, 37021–37051, 38001–38001, 39101–39103, 37052–37052, 36688–36688, 37019–37019, 37020–37020, 37053–37999, 38002–38999, 39104–39999.

Serial ranges apply per model as specified in paragraphs (c)(1) through (5): Model 212 S/N 30501-30603, 30611-30753, 30755-30889, 30891-30999, 31101-31162, 31164-31311, 32101-32142, 35001-35103; Model 412CF S/N 46400-46499; Model 412 and 412EP S/N 33001-33078, 33080-33129, 33131-33138, 33150-33213, 36001-36687, 36689-36999, 37002-37018, 37021-37051, 38001, 39101-39103; Model 412EP S/N 37052; Model 412 and 412EP S/N 36688, 37019, 37020, 37053-37999, 38002-38999, 39104-39999.

Whether AD 2024-16-19 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 2024-16-19 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.