Is AD 2003-18-03 a recurring Airworthiness Directive?

No — AD 2003-18-03 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2003-18-03 apply to?

AD 2003-18-03 applies to Eurocopter — models SA365N, SA365N1, AS365N2, AS365N3, EC155B, SA365, AS365, EC155. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2003-18-03

one-time

Official AD 2003-18-03 · FR doc 03-22619 · 2003-09-08 · airframe

Airworthiness Directives; Eurocopter France Model EC 155B, SA-365N and N1, AS-365N2, and AS 365 N3 Helicopters

What this AD requires

This amendment adopts a new airworthiness directive (AD) for the specified Eurocopter France (Eurocopter) model helicopters that requires inspecting the hydraulic brake hose (hose) for crazing, pinching, distortion, or leaks at the torque link hinge and replacing the hose, if necessary. This amendment also requires inspecting the hose and the emergency flotation gear pipe to ensure adequate clearance, and adjusting the landing gear leg, if necessary. This amendment is prompted by a report of a hose compression due to interference with a clamp that attaches the emergency flotation gear pipe. The actions specified by this AD are intended to prevent failure of the hose, resulting in failure of hydraulic pressure to the brakes on the affected landing gear wheel, and subsequent loss of control of the helicopter during a run-on landing.

Which aircraft AD 2003-18-03 applies to

MakesEurocopter

ModelsSA365N, SA365N1, AS365N2, AS365N3, EC155B, SA365, AS365, EC155

Applies to a landing gear brake hydraulic hose on SA365N/N1, AS365N2, AS365N3 helicopters (per Eurocopter Alert Telex No. 32.00.09) and EC155B helicopters (per Alert Telex No. 32A004), both dated July 31, 2002. Within 10 hrs TIS, inspect the hose for crazing/pinching/distortion/leaks; replace before further flight if found; at the next 100-hr inspection verify clearance to the emergency flotation gear pipe and adjust the landing gear leg if necessary.

Whether AD 2003-18-03 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 2003-18-03 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.