AD/RAD/88 - Honeywell Communications and Mode S Transponder Units (Cth)

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.

Radio Communication and Navigation Equipment AD/RAD/88 Honeywell Communications and 10/2007 DM Mode S Transponder Units

Applicability: Honeywell RCZ-833J, RCZ-833K, RCZ-851J, RCZ-851K and RCZ-854J communications (COM) units and Honeywell XS-856A, XS-856B and XS-857A Mode S transponder units with the following part numbers (P/N): Communications Unit P/N Mode S Transponder P/N RCZ-833J 7510700-763 XS-856A 7517400-865 7510700-863 7517400-885 RCZ-833K 7510700-765 XS-856B 7517400-866 7510700-875 7517400-886 RCZ-851J 7510700-813 XS-857A 7517400-876 RCZ-851K 7510700-815 7517400-896 RCZ-854J 7510700-725 7510700-825 Note 1: These units are known to be fitted to, but not limited to, the following aeroplane models: Manufacturer Model British Aerospace Jetstream 4100 series Bombardier BD-700-1A10 and BD-700-1A11 Cessna 525, 550, 560 and 650 series Dassault Falcon 900EX and 2000EX series Embraer EMB-135 and EMB-145 series Learjet 45 Lockheed 282-44A-05 (C130B) and 382G series Raytheon Hawker 800 (including U-125A), 800XP and 1000 series Requirement: 1. For aircraft equipped with Honeywell RCZ-833J, RCZ-833K, RCZ-851J, RCZ-851K or RCZ-854J COM units, with P/Ns listed in the applicability section of this Directive: a. If not previously accomplished in accordance with AD/RAD/84 - Amend the applicable Aircraft Flight Manual (AFM) by inserting the following statement into the Normal Procedures Section: "After completion of any 4096 ATC Code change (also referred to as Mode A Code), check the status of the transponder. If the transponder indicates that it is in standby mode, re-select the desired mode (i.e. the transponder should be in the active mode)." Amendment of the AFM Normal Procedures Section may be accomplished by inserting a copy of this Directive into the AFM. b. If not previously accomplished in accordance with AD/RAD/84 - Modify the COM unit by incorporating Honeywell Service Bulletin (SB) Publication No A21-3851-005 dated 29 July 2005 or Honeywell SB Publication No A24-3851-002 dated 28 July 2005 as applicable. Note 2: Accomplishment of the modification or replacement with a modified unit in accordance with the instructions contained in Honeywell Alert Service Bulletin (ASB) 7510700-23-A0048 dated 27 January 2006 and, as necessary, ASB 7517400-23-A6015 Revision 001 dated 29 July 2005 is an acceptable alternative to the Requirement1.b.modification. c. Replace the XS-852E/F Mode S transponder of the COM unit with a new or modified XS-852E/F Mode S transponder that has MOD V installed, in accordance with Honeywell Alert Service Bulletin 7510700-23-A0047 Revision 001, dated July 29, 2005. 2. For aircraft equipped with Honeywell XS-856A, XS-856B or XS-857A Mode S Transponder Units, with P/Ns listed in the applicability section of this Directive: a. Unless already accomplished in accordance with Requirement 1.a. - Amend the applicable Aircraft Flight Manual (AFM) by inserting the following statement into the Normal Procedures Section: "After completion of any 4096 ATC Code change (also referred to as Mode A Code), check the status of the transponder. If the transponder indicates that it is in standby mode, re-select the desired mode (i.e. the transponder should be in the active mode)." Amendment of the AFM Normal Procedures Section may be accomplished by inserting a copy of this Directive into the AFM. b. Unless already accomplished, replace the modification plate of the transponder with a new plate and test the transponder, in accordance with the Accomplishment Instructions of Honeywell ASB 7517400-23-A0017, dated 23 January 2006. c. If the transponder fails the test specified in Requirement 2.b., install MOD Y into the transponder as specified in Requirement 2.d.