Is AD E6-20860 a recurring Airworthiness Directive?

No — AD E6-20860 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD E6-20860 apply to?

AD E6-20860 applies to Columbia — models LC42-550FG. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive E6-20860

one-time

AD E6-20860 · 2006-12-11 · airframe

Airworthiness Directives; Columbia Aircraft Manufacturing Models LC41-550FG and LC42-550FG Airplanes

What this AD requires

The FAA is adopting a new Airworthiness Directive (AD) for all Columbia Aircraft Manufacturing (previously The Lancair Company) Models LC41-550FG and LC42-550FG airplanes equipped with Kelly Aerospace Thermal Systems Supplemental Type Certificate (STC) SA02260CH, Thermawing Deice System (also known as E-Vade). This AD requires you to deactivate the deice system and install a placard in clear view of the pilot. This AD results from problems with the installation of the Kelly Aerospace Thermal Systems Thermawing Deice System following STC SA02260CH. We are issuing this AD to prevent a short circuit condition at the deice heater connector, which could result in damage to the wings and horizontal stabilizer. This damage could lead to reduced structural integrity of the airplane.

Which aircraft AD E6-20860 applies to

MakesColumbia

ModelsLC42-550FG

equipped with

Whether AD E6-20860 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 E6-20860 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.