EASA AD No : 2009-0205R1 

EASA Form 110 Page 1/2 

EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2009-0205R1 

Date: 12 January 2010 

Note: This Airworthiness Directive (AD) is issued by EASA, acting in accordance with 

Regulation (EC) No 216/2008 on behalf of the European Community, its Member States and 

of the European third countries that participate in the activities of EASA under Article 66 of 

that Regulation. 

This AD is issued in accordance with EC 1702/2003, Part 21A.3B. In accordance with EC 2042/2003 Annex I, Part M.A.301, the 

continuing airworthiness of an aircraft shall be ensured by accomplishing any applicable ADs. Consequently, no person may 

operate an aircraft to which an AD applies, except in accordance with the requirements of that AD, unless otherwise specified by 

the Agency [EC 2042/2003 Annex I, Part M.A.303] or agreed with the Authority of the State of Registry [EC 216/2008, Article 14(4) 

exemption]. 

Type Approval Holder’s Name : 

BAE Systems (Operations) Ltd 

Type/Model designation(s) : 

BAe 146 and AVRO 146-RJ aeroplanes 

TCDS Number : EASA.A.182 

Foreign AD : Not applicable 

Revision : This AD revises and replaces EASA AD 2009-0205 dated 30 September 2009. 

ATA 27 Flight Controls – Aileron Interconnect Cable Pulley Guards – 

Installation 

Manufacturer(s): 

BAE Systems (Operations) Ltd, British Aerospace plc, British Aerospace 

(Commercial Aircraft) Ltd, British Aerospace (Operations) Ltd, British 

Aerospace Regional Aircraft Ltd, British Aerospace Regional Aircraft trading 

as Avro International Aerospace. 

Applicability: 

BAe 146 and AVRO 146-RJ aeroplanes, all models, all serial numbers, 

except those modified to freighter configuration in accordance with BAE 

Systems modification No. HCM50200B. 

Reason: 

Three events have been reported where insulation material was found to be 

fouling pulleys in the aileron interconnect circuit in the cabin roof area. The 

insulation material is contained in a bag, the material of which tends to 

become brittle with age. During the production life of the aeroplane type, 

several methods of bag retention were applied, all of which involved 

puncturing the bag. This puncture tends to result in a tear, which, if detected 

in time, can be repaired with tape; however, the affected cabin roof area is 

not frequently accessed for inspection. Over time, the weight of the bag also 

tends to cause tears in the material, making the insulation material sag, 

thereby causing interference with the cable and pulley. 

Interference between the cable and the insulation bag causes the material to 

be drawn into the gap between the pulley and the pulley guard. This 

condition, if not detected and corrected, could lead to restricted aileron 

movement and consequently, reduced control of the aeroplane. 

For the reasons described above, this AD requires the installation of 

additional guards, bolts and nuts on the aileron interconnect cable pulleys at 
EASA AD No : 2009-0205R1 

EASA Form 110 Page 2/2 

frame 29 (left and right). 

This AD has been revised to exclude aeroplanes from the Applicability that 

have been modified to freighter configuration in accordance with BAE 

Systems modification No. HCM50200B. As this modification includes the 

removal of the insulation bags, the unsafe condition that is addressed by this 

AD cannot exist or develop on those aeroplanes. 

Effective Date: Revision 1 : 26 January 2010 

Original : 14 October 2009 

Required Action(s) 

and Compliance 

Time(s): 

Required as indicated, unless accomplished previously: 

Within the next 6 months after 14 October 2009, the effective date of the 

original issue of this AD, install new aileron interconnect cable pulley guards 

in accordance with Section 2 Accomplishment Instructions of BAE Systems 

Modification Service Bulletin SB.27-183-36246A. 

Ref. Publications: 

BAE Systems (Operations) Limited Modification Service Bulletin 

SB.27-183-36246A dated 09 December 2008 (Initial Issue). 

The use of later approved revisions of this document is acceptable for 

compliance with the requirements of this AD. 

Remarks :

1. If requested and appropriately substantiated, EASA can approve 

Alternative Methods of Compliance for this AD. 

2. The original issue of this AD was posted on 27 August 2009 as PAD 

09-106 for consultation until 24 September 2009. No comments were 

received during the consultation period. 

3. Enquiries regarding this AD should be referred to the Airworthiness 

Directives, Safety Management & Research Section, Certification 

Directorate, EASA. E-mail ADs@easa.europa.eu. 

4. For any question concerning the technical content of the requirements in 

this AD, please contact: 

BAE Systems (Operations) Ltd, Customer Information Department, 

Prestwick International Airport, Ayrshire, KA9 2RW, Scotland, United 

Kingdom; Telephone +44 1292 675207, Facsimile +44 1292 675704; 

E-mail: RApublications@baesystems.com