Is AD 2013-01-04 a recurring Airworthiness Directive?

Yes — AD 2013-01-04 requires a repetitive inspection every 6 months. Next-due depends on the aircraft's time in service.

Which aircraft does AD 2013-01-04 apply to?

AD 2013-01-04 applies to Bell — models 412, 412EP. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2013-01-04

recurring

Official AD 2013-01-04 · FR doc 2013-02238 · 2013-02-04 · airframe

Airworthiness Directives; Bell Helicopter Textron, Inc., Helicopters

What this AD requires

We are adopting a new airworthiness directive (AD) for Bell Helicopter Textron, Inc. (Bell), Model 412 and 412EP helicopters. This AD requires creating a component history card or equivalent record and begin counting and recording the number of accumulated landings for each high aft crosstube assembly (crosstube). Also, this AD requires installing "caution" decals regarding towing of a helicopter at or above 8,900 pounds. This AD also requires confirming the crosstube is within the horizontal deflection limits and replacing it if it is not. This AD also requires a recurring fluorescent penetrant inspection (FPI) of each crosstube and upper center support for a crack, any corrosion, nick, scratch, dent, or any other damage. This AD requires repairing damaged crosstubes and upper center supports that are within acceptable limits, reworking crosstubes by bonding on abrasion strips, and replacing each unairworthy crosstube with an airworthy crosstube. This AD was prompted by analysis of the crosstubes conducted as a result of recent field failures and corrosion problems of the affected crosstubes. The actions are intended to prevent failure of a crosstube, collapse of the landing gear, and subsequent loss of control of the helicopter.

Repetitive inspection. Re-inspect every 6 months. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 2013-01-04 applies to

MakesBell

Models412, 412EP

Part-conditional — 412-050-011-101, 412-050-011-103, 412-050-011-105, 412-050-011-107, 412-050-045-105.

Applies only to helicopters with a high aft crosstube assembly P/N 412-050-011-101, -103, -105, -107, or 412-050-045-105, installed.

Whether AD 2013-01-04 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 2013-01-04 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.