AD/AIRCON/14 Amdt 4 - Zonal Drying System Regeneration Air Duct Overheat (Cth)

AIRWORTHINESS DIRECTIVE On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/AIRCON/14 Amdt 3 and issues the following 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.

Airconditioning Equipment AD/AIRCON/14 Amdt 4 Zonal Drying System Regeneration 7/2009 Air Duct Overheat

Applicability: CTT Systems AB Zonal Drying System P/N 1000-001, 2000-000, 2000-005, 2001-001, 2001-006, 3000-000 Rev.A, 3000-001, 3000-002 Rev.A and 3000-002 Rev.D.

Note 1: These are known to be installed in, but not limited to, Airbus A330-243 and A330-322; Boeing 737-700, 737-800, 747-400, and 767-300 series; Bombardier CL-600-2B19; and McDonnell Douglas MD-11 series aeroplanes.

The following STCs have been identified to be affected by the requirements of this AD. The approval list for the installation of the affected Zonal Drying System in Table 1 of this AD may be not exhaustive. In case the relevant aircraft are not listed therein, this does not exempt any aircraft having an affected Zonal Drying System P/N installed from compliance with this directive.

Table 1. STC Number Issued by Holder Applicable to TA0259 LBA Lufthansa Technik AG Airbus A330-322 (s/n 120) LBA.21E2.TA0270 LBA Lufthansa Technik AG Bombardier CL-600-2B19 LBA.21E2.TA0307 LBA Lufthansa Technik AG Boeing 737-700 LBA.21E2.TA0609 LBA Lufthansa Technik AG Airbus A330-243 LBA.21E2.TA0636 LBA Lufthansa Technik AG Boeing 737-800