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AD/PROP/2 Amdt 4 - Feathering Propellers - Functional Check
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Propellers - General
| AD/PROP/2 Amdt 4 | Feathering Propellers - Functional Check | 5/2016 |
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| Applicability: | All feathering propellers fitted to piston engine aircraft to which Part 42 of CASR 1998 applies. |
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| Requirement: | Conduct a ground functional check to ensure the propellers will fully feather within the aircraft manufacturer's specified time limits. |
| Compliance: | At intervals not exceeding 110 hours time in service or 12 calendar months, whichever occurs first. |
| The effective date of this AD is 26 February 2016. | |
| Background: | To ensure propellers are capable of feathering when required, a ground functional check is introduced. Regular feathering of propellers will reduce the engine oil sludge build up in the propeller dome and aid in redistribution of grease in blade bearings.Amendment 1 incorporated manufacturers' time limits to the feathering check.Amendment 2 introduced an annual inspection requirement.Amendment 3 increased the hourly interval to 110 hours to align the interval with common maintenance intervals. |
| Amendment 4 is issued to limit the applicability of the AD to Part 42 aircraft only. This AD will be repealed after the requirements are incorporated into a future amendment of the Part 42 Manual of Standards. |
VAN DIJK_P
Pieter van Dijk
Delegate of the Civil Aviation Safety Authority
22 February 2016