EASA AD No.: 2009-0038

EASA Form 110 Page 1/2 

## EASA AIRWORTHINESS DIRECTIVE

AD No.: 2009-0038

Date: 18 February 2009

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 applic able ADs. Consequently, no person may opera te an aircraft to which an AD applies, except in accordance with th e requirements of that AD, unless otherwise specified by the Ag ency [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) exemptio n].



### Type Approval Holder’s Name :
BAE Systems (Operations) Ltd Type/Model designation(s) :

Jetstream 4100 aircraft

TCDS Number : United Kingdom BA27

Foreign AD : Not applicable

Supersedure : This AD supersedes EASA AD 2007-0 268 dated 8 October 2007



### ATA 61 Propellers – Propeller Speed Warning System – Installation

Manufacturer(s): Jetstream Aircraft Ltd, British Aerosp ace Regional Aircraft Ltd, British Aerospace (Operations) Ltd and British Ae rospace (Commercial Aircraft) Ltd.

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

Reason: During ground manoeuvring, prolonged operat ion with either engine in the restricted range between 82% and 90% RPM will result in damage to the propeller assembly that could eventually result in the release of a propeller blade. To correct this unsafe condition, EASA AD 2007-0268 was is sued to require the installation of a Propeller Warning Placard and implementation of a corresponding Aircraft Flight Manual (AFM) limitation, instructing the flight crew to taxi with the condition lever at FLIGHT in order to minimise the time spent by the engines in the restricted rang e. BAE Systems has now developed a Propeller Speed Warning System, embodiment of which will allow taxiing with the condition lever at TAXI, through the introduction of a revised Flight Manual Limitation. For the reasons described above, this EASA AD retains the requirements of EASA AD 2007-0268, which is superseded, and requires the installation of a Propeller Speed Warning System.

Effective Date: 04 March 2009EASA AD No.: 2009-0038

EASA Form 110 Page 2/2 Required Action(s) and Compliance Time(s): Required as indicated, unless accomplished previously: (1) Within the next 3 months after 22 October 2007 [the effective date of AD 2007-0268], replace the existing Propeller Limitations Placard in the cockpit in accordance with BAE Systems (Operations) Ltd Service Bulletin (SB) J41-11-027 and ensure that t he AFM contains General Amendment G12 and Advance Amendment Bulletin No. 13. (2) Within the next 6 months after the effective date of this AD, install a Propeller Speed Warning System (modification JM41674) in accordance with Section 2 of BAE Systems (O perations) Ltd AC IB J41-61-014 and ensure that the AFM contains Particular Amendment P111. (3) After modification of an aircraft as re quired by paragraph (2) of this AD, the placard and AFM Advance Amendment Bulletin No. 13 as introduced by paragraph (1) of this AD are no longer required and must be removed from that aircraft.

Ref. Publications: BAE Systems (Operations) Limit ed SB J41-11-027 dated 29 March 2007 BAE Systems (Operations) Limited Jets tream 41 ACIB J41-61-014 Issue 6 Section 2, dated 17 December 2008. The use of later approved revisions of these documents 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 published on 20 January 2009 as PAD 09-018 for consultation until 03 February 2009. No comments were received during the consultation period. 3. Enquiries regarding this AD should be referred to the Airworthiness Directives, Safety Management & Re search Section, Certification Directorate, EASA. E-mail ADs@easa.europa.eu

. 4. For any question concerning the tec hnical content of the requirements in this AD, please contact: BAE Systems (Operations) Ltd, Cu stomer Information Department, Prestwick International Airport, Ay rshire, KA9 2RW, Scotland, United Kingdom; Telephone +44 1292 675207, Facsimile +44 1292 675704; E-mail: RApublications@baesystems.com

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