EASA AD No : 2010-0179 

EASA Form 110 Page 1/2 

EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2010-0179 

Date: 30 August 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 Airworthiness Directive applies, except in accordance with the requirements of that Airworthiness 

Directive 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): 

Jetstream 4100 Aeroplanes 

TCDS Number: EASA. A.189 

Foreign AD: Not applicable 

Supersedure: None 

ATA 52 Doors - Upper and Lower Passenger/Crew Door Pin Guides – 

Inspection / Replacement 

Manufacturer(s): Jetstream Aircraft Ltd, British Aerospace Regional Aircraft Ltd , British 

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

Applicability: Jetstream 4100 aeroplanes, all models, all serial numbers. 

Reason: A door failure mode has been reported by an operator. 

Investigation has shown that the passenger/crew entry door pin-guide plates 

can fail prior to the expected fatigue life. A metallurgical examination of the 

failed component (lower guide plate) concluded that the occurred failure was 

due to exfoliation corrosion. 

The current inspection regime is not adequate to identify early stages of this 

corrosion. 

This condition, if not corrected, can lead to the sudden depressurisation of 

the aeroplane and consequently may injure the occupants. 

For the reasons described above, this AD requires immediate and periodic 

ultrasonic inspections of the door pin guides and the accomplishment of the 

relevant corrective actions as necessary. 

Effective Date: 13 September 2010 

Required action(s) Required as indicated, unless accomplished previously: 
EASA AD No : 2010-0179 

EASA Form 110 Page 2/2 

and Compliance 

Time(s): (1) Within 6 months after the effective date of this AD, perform an 

ultrasonic inspection of the passenger/crew door upper and lower guide 

plates in accordance with the instructions of paragraph 2.B. and 

appendix 1 of BAE Systems (Operations) Ltd Service Bulletin (SB) 

J41-52-064. 

(2) Thereafter, repeat the inspection required by paragraph (1) of this AD at 

intervals not to exceed 48 Months. 

(3) If, during the inspection required by paragraphs (1) and (2) of this AD, a 

split caused by exfoliation corrosion of an area of 78mm2 (0.12 in.2) or 

greater is detected, before next flight, replace any guide plates affected 

by a serviceable one. 

(4) After the replacement of the guide plates, as required by paragraph (3) 

of this AD, inspect the new guide plates 48 Months after the date of 

installation in accordance with the inspection required by paragraph (1) 

of this AD, and thereafter repeat this inspection at intervals not to 

exceed 48 Months. 

Ref. Publications: 

BAE Systems (Operations) Ltd Service Bulletin J41-52-064, at original issue, 

dated 15 September 2009. 

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. This AD was posted on 20 July 2010 as PAD 10-073 for consultation until 

17 August 2010. 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 questions 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