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Airworthiness Directive 2018-03-03

recurring
Official AD 2018-03-03 · FR doc 2018-02551 · 2018-02-13 · airframe

Airworthiness Directives; Textron Aviation Inc. Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Textron Aviation Inc. Models 401, 401A, 401B, 402, 402A, 402B, 402C, 411, 411A, 414, 414A 421, 421A, 421B, 421C, and 425 airplanes. This AD requires repetitively inspecting the left and the right forward lower carry through spar cap for cracks and replacing the carry through spar if cracks are found. This AD was prompted by a report of a fully cracked lower forward carry through spar cap found on an affected airplane. We are 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 2018-03-03 applies to

MakesTextron Aviation Inc.
Models401, 401A, 401B, 402, 402A, 402B, 402C, 411, 411A, 414, 414A, 421, 421A, 421B, 421C, 425
Serial-conditional — narrows to serials 401-0001–401-0322, 401A0001–401A0132, 401B0001–401B0221, 402-0001–402-0322, 402A0001–402A0129, 402B0001–402B1384, 689–689, 402C0001–402C1020, 411-0001–411-0250, 411-0251–411-0300, 414-0001–414-0965, 414A0001–414A1212, 421-0001–421-0200, 421A0001–421A0158, 421B0001–421B0970, 421C0001–421C1807, 425-0001–425-0236.

Type certificate previously held by Cessna Aircraft Company. Serial ranges apply per model: 401 S/N 401-0001 through 401-0322; 401A S/N 401A0001 through 401A0132; 401B S/N 401B0001 through 401B0221; 402 S/N 402-0001 through 402-0322; 402A S/N 402A0001 through 402A0129; 402B S/N 402B0001 through 402B1384; 402C S/N 689 and 402C0001 through 402C1020; 411 S/N 411-0001 through 411-0250; 411A S/N 411-0251 through 411-0300; 414 S/N 414-0001 through 414-0965; 414A S/N 414A0001 through 414A1212; 421 S/N 421-0001 through 421-0200; 421A S/N 421A0001 through 421A0158; 421B S/N 421B0001 through 421B0970; 421C S/N 421C0001 through 421C1807; 425 S/N 425-0001 through 425-0236.

Whether AD 2018-03-03 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 2018-03-03 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.