Is AD 2005-07-06 a recurring Airworthiness Directive?

Yes — AD 2005-07-06 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Which aircraft does AD 2005-07-06 apply to?

AD 2005-07-06 applies to General Electric — models CF34-8C1, CF34-8C5, CF34. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2005-07-06

recurring

Official AD 2005-07-06 · FR doc 05-6247 · 2005-03-31 · turbine engine

Airworthiness Directives; General Electric Company CF34-8C1 Series and CF34-8C5 Series Turbofan Engines

What this AD requires

The FAA is superseding an existing airworthiness directive (AD) for General Electric Company (GE) CF34-8C1 series and CF34-8C5 series turbofan engines, with certain serial number (SN) master variable geometry (VG) actuators installed. That AD currently requires initial and repetitive reviews of the airplane Maintenance Data Computer (MDC) for master VG actuator fault messages, and if the MDC is inoperative, reviews of the Engine Indication and Crew Alerting System (EICAS) for fault messages. That AD also requires replacing actuators reported faulty by the Full Authority Digital Engine Control (FADEC). This ad requires those same actions, and expands the applicability to additional actuators by part number (P/N) and SN. This AD also prohibits installation of affected master VG actuators onto any CF34- 8C1 and CF34-8C5 engine after the effective date of this AD. This AD results from the need to add to the list of affected parts, master VG actuators made by parts manufacturer approval (PMA). We are issuing this AD to prevent dual-channel electrical signal faults in the VG master actuator, which will cause an uncommanded reduction of thrust to idle with a subsequent loss of the ability to advance thrust above idle, and which will result in a multiengine loss of thrust if dual- channel faults occur on more than one engine simultaneously.

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

Which aircraft AD 2005-07-06 applies to

MakesGeneral Electric

ModelsCF34-8C1, CF34-8C5, CF34

Serial-conditional — narrows to serials APM238AE–APM238AE, APM242AE–?, 238AE–238AE, 242AE–?.

Part-conditional — 4120T02P02, 1211508-002.

Applies to CF34-8C1 and CF34-8C5 series engines with master VG actuator GE P/N 4120T02P02 (SN APM238AE, or SNs APM242AE and up) or Arkwin Industries, Inc. PMA P/N 1211508-002 (SN 238AE, or SNs 242AE and up) installed; Arkwin PMA parts are also marked with GE P/N 4120T02P02. Installed on, but not limited to, Bombardier CL-600-2C10 (CRJ-700 and -701) and CL-600-2D24 (CRJ-900) airplanes.

Whether AD 2005-07-06 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 2005-07-06 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.