Is AD 2012-4285 a recurring Airworthiness Directive?

No — AD 2012-4285 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2012-4285 apply to?

AD 2012-4285 applies to Cfm International S.A. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2012-4285

one-time

AD 2012-4285 · 2012-02-24 · turbine engine

Airworthiness Directives; CFM International S.A. Model CFM56 Turbofan Engines

What this AD requires

The FAA is correcting an airworthiness directive (AD) that published in the Federal Register. That AD applies to CFM International S.A. CFM56-2, CFM56-3, CFM56-5A, CFM56-5B, CFM56-5C, and CFM56-7B series turbofan engines with certain part number (P/N) and serial number (SN) high-pressure compressor (HPC) 4-9 spools installed. In Table 1 of the AD, the HPC 4-9 spool SN GWN05AMO in the 2nd column of the Table is incorrect. This document corrects that error. In all other respects, the original document remains the same.

Which aircraft AD 2012-4285 applies to

MakesCfm International S.A

certain

Whether AD 2012-4285 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 2012-4285 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.