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. British Aerospace BAe 146 Series Aeroplanes AD/BAe 146/141 State of Design Airworthiness Directives 18/2010 Applicability: British Aerospace BAe 146 and Avro 146-RJ aircraft - all series. Requirement: 1. Determine the applicability of the UK CAA Airworthiness Directives (AD) listed in Table 1. 2. If it is determined that a UK CAA AD listed in Table 1 is applicable and has not been previously accomplished, perform the actions required by that AD or later EASA-approved revision. Service Bulletins approved by EASA as Alternative Methods of Compliance (AMOC) to the ADs listed in Table 1 are considered acceptable for compliance with the equivalent requirements of this Airworthiness Directive. Table 1 CAA AD Service Bulletin Title 004-03-2001 57-064 Replace bolts on wing rear spar 004-10-2000 57-62 Inspect spars for corrosion and cracking 002-11-99 57-A58 Inspect for micro-biological contamination 006-04-98 57-55 Inspect wing stringers for machining error 007-09-97 24-120 Inspect ERMA terminals in equipment bays 010-07-97 55-16 Inspect elevator hinge bracket rib 1 002-03-97 SB not specified Ex US Air and ex PSA aircraft 006-05-95 35-35-56091A Stainless steel pipe in oxygen system 008-09-94 36-23 Inspection of housings in bleed air system 015-05-93 29-31-01339A Fire resistance coupling in engine bay CAA AD Service Bulletin Title 009-04-92 27-135 Pitch servomotor mounting bracket 006-12-91 25-299-60358D Revised interior décor specification 004-10-90 53-98 Pitting corrosion of fuselage skins 011-09-90 27-114-01028B Stall identification and warning system 048-09-89 32-A101 Hydraulic lines to wheel brake units 009-08-89 25-A157 Insulation bags in passenger compartment 005-10-88 27-87 Aileron disconnect unit 003-04-88 27-74 Aileron and elevator trim screwjacks 009-11-86 52-55-00830A Remove locking arm from doors 002-08-86 24-30-00757A DC electrical power distribution 013-04-86 27-A54 Flap control system 011-04-86 25-13-70039A Modification of evacuation slide 003-02-86 21-24-00543A Air conditioning Note 1: UK CAA ADs may be accessed via the internet at the following URL: http://ad.easa.europa.eu/ Compliance: If a certificate of airworthiness has not been issued for the aircraft - before issue of the certificate of airworthiness. If a certificate of airworthiness has been issued for the aircraft - before further flight after 60 days from the effective date of this Directive. This Airworthiness Directive becomes effective on 24 September 2010. Background: The UK CAA ADs listed in Table 1 of this Directive require once-only actions for which the compliance date has passed. CASA has determined that these ADs may be applicable to some Australian aircraft. This Directive is issued to ensure compliance with all State of Design ADs. CASA appreciates that, due to date of aircraft manufacture or aircraft configuration and modification status, some of the ADs listed in Table 1 will not be applicable to any aircraft presently registered in Australia. Charles Lenarcic Delegate of the Civil Aviation Safety Authority 7 September 2010