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Airworthiness Directive 2007-05-16

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Official AD 2007-05-16 · FR doc E7-3833 · 2007-03-07 · turbine engine

Airworthiness Directives; General Electric Aircraft Engines (GE) CF34-3A1/-3B/-3B1 Turbofan Engines

What this AD requires

This action supersedes emergency airworthiness directive (AD) 2007-04-51 that was sent previously to all known U.S. owners and operators of GE CF34-3A1/-3B/-3B1 turbofan engines. That action required a onetime visual and tactile inspection of certain areas of certain serial number (SN) fan disks for an arc-out defect, within 20 engine flight hours after the effective date of that AD. This AD supersedes AD 2007-04-51 and adds eight SNs to the list of suspect fan disks. This AD results from GE discovering eight additional SNs of fan disks suspected of having an arc-out defect, and from the original report that a GE CF34-3B1 turbofan engine experienced an uncontained fan disk failure during flight operation. We are issuing this AD to prevent an uncontained fan disk failure and airplane damage.

Which aircraft AD 2007-05-16 applies to

MakesGeneral Electric
ModelsCF34-3A1, CF34-3B, CF34-3B1, CF34
Serial-conditional — narrows to serials GEE148JH–GEE148JH, GEE01629–GEE01629, GEE01888–GEE01888, GEE147MF–GEE147MF, GEE147NA–GEE147NA, GEE147V5–GEE147V5, GEE147VC–GEE147VC, GEE148JG–GEE148JG, GEE145LL–GEE145LL, GEE145NK–GEE145NK, GEE1466F–GEE1466F, GEE1466L–GEE1466L, GEE146H3–GEE146H3, GEE146KD–GEE146KD, GEE146N7–GEE146N7, GEE147N7–GEE147N7, GEE147N8–GEE147N8, GEE14818–GEE14818, GEE14815–GEE14815, GEE1480J–GEE1480J, GEE1485J–GEE1485J, GEE1480F–GEE1480F, GEE14885–GEE14885, GEE148EJ–GEE148EJ, GEE148FT–GEE148FT, GEE148ER–GEE148ER, GEE148PN–GEE148PN, GEE148RN–GEE148RN, GEE148TW–GEE148TW, GEE03675–GEE03675, GEE148R0–GEE148R0, GEE148VT–GEE148VT, GEE148WC–GEE148WC, GEE1F9G6–GEE1F9G6, GEE1F9G8–GEE1F9G8, GEE1F9GA–GEE1F9GA, GEE1F9WN–GEE1F9WN, GEE1FA22–GEE1FA22, GEE1FA6H–GEE1FA6H.

Applies only to CF34-3A1/-3B/-3B1 engines with a fan disk bearing one of the serial numbers listed in AD Table 1 (fan disk SN mapped to last known associated engine serial number).

Whether AD 2007-05-16 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 2007-05-16 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.