Airworthiness Directive 98-23-06
one-timeAirworthiness Directives; General Electric Aircraft Engines CJ610 Turbojet and CF700 Series Turbofan Engines
What this AD requires
This amendment adopts a new airworthiness directive (AD) that is applicable to General Electric Aircraft Engines (GEAE) CJ610 series turbojet and CF700 series turbofan engines. This action requires operators to remove and replace with serviceable parts unapproved combustion liner assemblies prior to further flight. This amendment is prompted by findings that unapproved combustion liner assemblies are installed on the affected engines. The actions specified in this AD are intended to prevent combustor liner cracking at multiple locations, progressing to liner fragmenting and combustor casing burnthrough, which could result in an engine fire.
Which aircraft AD 98-23-06 applies to
Applies to CJ610 turbojet and CF700 turbofan engines with combustor liner assembly P/N 6008T94G03 installed, identified by serial number in Appendix 1 of the AD, or any such liner following repair/overhaul involving inner shell P/N 5016T30G02 or outer shell P/N 6008T95G01 during May 16, 1997 through February 13, 1998 by The Jet Engine Shop (Dallas, TX).
Whether AD 98-23-06 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:
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.