Is AD 2013-26-01 a recurring Airworthiness Directive?

No — AD 2013-26-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2013-26-01

Q: Which aircraft does AD 2013-26-01 apply to?

AD 2013-26-01 applies to Cfm International S.A. — models CFM56-3, CFM56-7B, CFM56-7B27A, CFM56-7B27A/3, CFM56-7B27AE, CFM56. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2013-26-01 · FR doc 2013-30862 · 2013-12-30 · turbine engine

Airworthiness Directives; CFM International S.A. Turbofan Engines

What this AD requires

We are adopting a new airworthiness directive (AD) for all CFM International (CFM) S.A. CFM56-3 and CFM56-7B series turbofan engines with certain accessory gearboxes (AGBs) not equipped with a handcranking pad "oil dynamic seal" assembly. This AD was prompted by 42 events of total loss of engine oil from CFM56 series turbofan engines while in flight. This AD requires an independent inspection to verify re-installation of the handcranking pad cover after removal of the pad cover for maintenance until installation of a handcranking pad oil dynamic seal assembly. We are issuing this AD to prevent loss of engine oil while in flight, which could result in engine failure, loss of thrust control, and damage to the airplane.

Which aircraft AD 2013-26-01 applies to

MakesCfm International S.A.

ModelsCFM56-3, CFM56-7B, CFM56-7B27A, CFM56-7B27A/3, CFM56-7B27AE, CFM56

Part-conditional — 335-300-103-0, 335-300-105-0, 335-300-106-0, 335-300-107-0, 335-300-108-0, 335-300-109-0, 335-300-110-0, 340-046-503-0.

Applies to CFM56-3 series engines with accessory gearbox (AGB) P/N 335-300-103-0, -105-0, -106-0, -107-0, -108-0, -109-0, or -110-0 installed; to CFM56-7B series engines (except CFM56-7B27A, CFM56-7B27A/3, and CFM56-7B27AE) with AGB P/N 340-046-503-0, -504-0, or -505-0 installed; and to CFM56-7B27A, CFM56-7B27A/3, and CFM56-7B27AE engines with AGB P/N 340-188-601-0 or -603-0 installed.

Whether AD 2013-26-01 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 2013-26-01 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.