The FAA has issued a new airworthiness directive (AD) for certain GE Aviation Czech s.r.o. M601E-11, M601E-11A, M601E-11AS, M601E-11S and M601F model turboprop engines. This AD was prompted by the exclusion of life limits for certain compressor cases and compressor drums from the airworthiness limitations section of the engine maintenance manual.
The AD requires recalculation of the consumed life for the affected compressor cases and compressor drums and, depending on the results of the recalculation, removal and replacement of the affected compressor case or compressor drum with a part eligible for installation. AD 2022-1414 may be viewed here. The AD requires action within 90 days of the effective date of March 13.