Document ID: chunk:federal_register_of_legislation:F2005L03889:body:0:p1
Version: federal_register_of_legislation:F2005L03889
Segment Type: other
Provision Reference: 
Character Range: 0–3493

AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998.  The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Propellers - Variable Pitch - McCauley
AD/PMC/48  Propeller Hub Socket Retention Threads  1/2006 DM

Applicability:  McCauley Propeller Systems propeller assemblies, models 2D34C53/74E-X; D2A34C58/90AT-X; 3AF32C87/82NC-X; D3AF32C87/82NC-X;
                D3A32C88/82NC-X; D3A32C90/82NC-X; and 3AF34C92/ 90LF-X, with propeller hubs listed by serial number in Table 1 of this AD:

                Table 1.
                Hub model                   Hub serial number
                C58, C34, C49, C78, C98     030725, 030726, 030727, 030728, 030729, 030730, 030748, 030749, 030750, 030751, 030752, 030753, 030754, 030755, 030756, 030757, 030758, 030759, 030760, 050403, 050407, 050408, 050410, 050475, 050477
                C53                         050389
                C79, C90                    042206, 042207, 042208
                C77, C88                    042201, 042202
                C87 blank index, C72, C93   042239, 042524, 042527, 042528, 042529, 050071, 050073
                C92, C74, C86               050866
                C87 D index                 050934

                Note 1:  Because a propeller hub can be interchanged and re-identified as a different model with the installation of different studs or adapters, any of the affected hubs could have been re-identified as a different model.  Each propeller hub model listed in Table 1 of this AD is the original hub configuration when shipped from McCauley.

                Note 2:  A list of aeroplanes that these hubs can be fitted to can be found in Table 2 of FAA AD 2005-24-09.

Requirement:     1. Remove from service propeller assemblies with affected propeller hubs, listed in Table 1 of this AD.

                 2. Propeller assemblies with affected propeller hubs listed in Table 1 of this AD must be disassembled, inspected, and have the propeller hub replaced with a serviceable propeller hub.

                 3. For retention nuts that were removed from an affected propeller hub, visually inspect the retention nut threads with a 10- power magnifier before assembly into a replacement propeller hub.  Reject the nut for any signs of galling, heavy localized loading, thread deformation, or chipped threads that may have been caused by thread interference in the propeller hub.

                 4. Report the findings of any propeller hub removed during Requirement 1 of this AD to:
                 Manager,
                 New Technologies and Systems Section
                 Manufacturing, Certification and New Technologies Office
                 Civil Aviation Safety Authority,
                 GPO Box 2005, Canberra, ACT 2601

                 Fax (02) 6217 1903 or (02) 6217 1442

                 Email: airworthiness.directives@casa.gov.au

                 5. Do not install hubs listed