Federal Register of Legislation
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 39.1 (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 - Hartzell
AD/PHZL/78 Anti-Ice Boots 7/2003
Applicability: Hartzell Propeller Inc. model HC-C2Y(K,R)-1BF/F8477-4 propellers with TKS (Aircraft De-icing) Ltd. anti- ice boots that were installed by SOCATA-Groupe AEROSPATIALE, the aircraft manufacturer, using TKS Ltd. Procedure P232, Specification for the Attachment of Propeller Overshoes.
Note 1: These propellers are installed on, but not limited to American Champion 8GCBC, Cessna 170 series, 172 series, 175 series, Piper PA-18 series, Sky International Inc. (Husky) A-1 (previous owners were Christen Industries; Aviat, Inc.; White International, LTD.), and SOCATA-Groupe AEROSPATIALE TB-20 and TB-21 aeroplanes.
Requirement: For propellers that have been overhauled after the installation of TKS (Aircraft De- icing) Ltd. Anti- ice boots, and have had the anti- ice boots re- installed using Hartzell Manual 133C (ATA 61-13-33) ''Aluminum Blade Overhaul'', AS&T Procedure 4700INS, or other approved procedures (excluding TKS Procedure P232) no further action is required. For propellers that have had the anti- ice boots installed using the TKS Procedure P232, but have not had anti- ice boots re- installed using Hartzell Manual 133C (ATA 61-13-33) ''Aluminum Blade Overhaul'', AS&T Procedure 4700INS, or other approved procedures (excluding TKS Procedure P232), remove anti- ice boots, inspect and rework anti- ice boot areas of propeller blades, and install new anti- ice boots in accordance with paragraph 3 of the Accomplishment Instructions of Hartzell Propeller Inc. Alert Service Bulletin (ASB) HC-ASB-61-251.
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