2018-03-22
FR doc 2018-02994 · 83 FR 6455AD 2018-03-22Published 2018-02-14Effective 2018-03-21
Superseded by 2020-15-03
Supersedence is read from the Federal Register text of the newer AD — the FAA publishes no structured field for it — and names only ADs held in our index.
Requires removal of certain power turbine (PT) disks installed on the affected engines.
Full official abstract
We are adopting a new airworthiness directive (AD) for GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A, M601E-11AS, M601E- 11S, and M601F turboprop engines. This AD requires removal of certain power turbine (PT) disks installed on the affected engines. This AD was prompted by a design review by the manufacturer that determined PT rotors with certain disks have less overspeed margin than originally stated during product certification. We are issuing this AD to address the unsafe condition on these products.