AD 2016-07-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; GE Aviation Czech s.r.o. Turboprop Engines |
Unsafe Condition
Damage to the engine power turbine (PT) disk in the area of the balance weights, or non-conforming geometry of the slot radius due to incorrect machining, could lead to PT disk failure, releasing high-energy debris and potentially causing engine damage or reduced airplane control.
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Required Actions
Inspect the engine PT disk using the procedures in Appendix B, paragraph 5 of GE Aviation Czech s.r.o. Alert Service Bulletin SB-2016-72-50-00-1/00. If the PT disk fails inspection, replace it with a part eligible for installation.
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Compliance Time
Within 90 days after the effective date of this AD
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Affected Aircraft
GE Aviation Czech s.r.o. M601E-11 turboprop engines with PT disk part number 3220.6 and serial number EE8, EF8, or KR5.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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