## EASA AIRWORTHINESS DIRECTIVE
AD No :2007-0270 R1 Date: 07 November 2007
No person may operate an aircraft towhich an Airworthiness Di~ective applies, except in accordance with the requirements ofthat Airworthiness Directive unless otherwise agreed with the Authority of the Slate of Registry. 

### Type Approval Holder's Name: BAE SYSTEMS (Operations) Limited TeDS Number: United Kingdom BA16 

### Type/Model designation(s): 

### SAe146andAvro 

### 146~RJai~craft



# • Foreign AD: Not applicable Revision: This Airworthiness Directive (AD) revises and replaces EASA AD 2007~0270 dated 16 October 2007. 

# 'I . ATA 57 Manufadurer(s): Applicability:

Reason: 

### Wings - Rear Spar Root Jbint Attachment Fittings atWing Rib 2

- Inspection BAE SYSTEMS (Operations) Ltd, British Aerospace (Commercial Aircraft) Ltd, British Aerospace (Operations) Ltd, British Aerospace pic, British Aerospace Regional Aircraft Ltd, British Aerospace Regional Aircraft Ltd trading asAvro International Aerospace. BAe 146 and AVRO 146-RJ aircraft, all models, all serial numberl? British Aerospace originally isiued Service Bulletin (SB) 57~033 in 1989 to detectfuelleaks and failed fasteners inthe region ofthe rear spar·rootjoint I attachment fitting atwing rib

## 2)Accomplishment ofthis SBwas mandated by CM United Kingdom AD 0~4-09-89. Revisions 1 through 7ofthis SB were introduced to inspect pre:mod HCM01447A standard installations for fuel leaks and loose or brokenlbolts. Modification HCM01447A introduced tension bolts inthe attachment fitting instead ofthe previous Hi-Lok bolts. Revision 8ofthe SB introduc~d inspection instructions for post modification HCM 01447A installations beqause fuel tank leaks and failed fasteners have subsequently been found on aircraft post modification HCM01447A Inspections ofthe post-mod HCM01447A standard are required to maintain the structural integrity ofthe Wing_8AE Systems has now published S8 57- 033 Revision 9that specifies additional, calendar-time based, inspection criteria to control the stress corrosion failures ofthe pre and post modification HCM01447A instkllations. EASA AD 2007-0270 supersedes CM UKAD 044-09-89 and requires the accomplishment of inspection~ and corrective actions, as necessary, in accordance with BAE-System~ sa 57-033 Revision 9. 

### I This AD is revised to clarify that the calendar compliance times are to be counted from the effective date, notfrom the

## sa issue date. I 

### I I 1/2Effective Date: 30 October 2007 Required as indicated, unless previously accomplished: Compliance: From the effective date ofthis directive, perform the inspections and corrective actions, as necessary, atthe thresholds and intervals specified in BAE Systems (Operations) Ud Service Bulletin IS8.57-033 Revision 9or 

# · • later approved revisions, except that the calendar thresholds forthe 

# · inspections are defined from the effective date ofthe AD and notfrom the

issue date ofthe service bulletin. 

# . 

# · I Ref. Publications: BAE SYSTEMS (Operations) S~rvice Bulletin tSB 57..{)33 Revision 9, 0' 

# · later approved revisions. 

# ,. Ifrequested and appropriately substantiated, EASA can accept Alternative Methods ofCompliance forthis AD. 

### 2 The original issue ofthis AD was posted on 11 September 2007 as 

## • PAD 07-165 for consultation until 09 October 2007. The Comment



### ·

# • Response Document can befound at http://ad.easa_europa.eu/



# · 3. Enquiries regarding this Aq should be referred tothe AD Focal PointRemarks: Certification Directorate, EiSA, E-mail: Ads@easa,europa_eu


## • 4 For any questions concerning the technical content ofthe requirements


# . · inthis AD, please contact:

# 1 BAE SYSTEMS (OPERATIONS), Project Management Group, Customer Information Department, 

# · Prestwick International Airport, Ayrshire, KA9 2RW, Scotland; 

## • Telephone: +44 1292675207, Fax: +44 1292675704; 

# . E-mail: RApublicatjons@baesystems.com



# •

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