AD 2022-21-13
Effective 12/06/2022 · Published 11/01/2022
Airworthiness Directives; Hoffmann GmbH & Co. KG Propellers
Summary
The FAA is superseding Airworthiness Directive (AD) 2021-23-17 for all Hoffmann GmbH & Co. KG (Hoffmann) model HO-V 72 propellers. AD 2021-23-17 required amending the existing aircraft flight manual (AFM) by inserting abnormal propeller vibration instructions, visual inspection and non-destructive test (NDT) inspection of the propeller hub and, depending on the results of the inspections, replacement of the propelle…