EASA AD No.: 2011-0194 

EASA Form 110 Page 1/2 

EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2011–0194 

Date: 06 October 2011 

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 26 Fire Protection – Toilet Vanity Unit Fire Extinguisher – 

Modification 

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: The Jetstream 4100 is equipped with a fire extinguisher that, if a fire is 

detected, discharges into the waste bin located within the toilet vanity unit. 

On the majority of aeroplanes, the furnishing vendor’s original design installs 

the fire extinguisher bottle part number (P/N) BA20509AM-4 in a horizontal 

position within the vanity unit. BAE Systems have subsequently been 

informed by the fire extinguisher manufacturer that the fire extinguisher bottle 

should be mounted vertically, as its operation cannot be guaranteed when 

mounted horizontally. In the event of a fire in the waste bin the extinguishant 

may not fully discharge from the fire extinguisher bottle. 

This condition, if not corrected, could result in a toilet waste bin fire 

propagation and consequent damage to the aeroplane and/or injury to its 

occupants. 

For the reasons described above, this AD requires the repositioning of the fire 

extinguisher bottle from a horizontal orientation to a vertical orientation.

Effective Date: 20 October 2011 
EASA AD No.: 2011-0194 

EASA Form 110 Page 2/2 

Required Action(s) 

and Compliance 

Time(s): 

Required as indicated, unless accomplished previously: 

(1) Within 2 months after the effective date of this AD, accomplish the 

following actions concurrently: 

(1.1) Determine from the table in paragraph 2.A.(1) of BAE Systems 

(Operations) Ltd Service Bulletin (SB) J41-26-008 Revision 2 

whether a fire extinguisher bottle P/N BA20509AM-4 is fitted to 

the aeroplane. 

(1.2) For those aeroplanes identified in paragraph (1.1) as having a fire 

extinguisher bottle P/N BA20509AM-4 fitted, reposition the fire 

extinguisher bottle in accordance with paragraph 2.C. of BAE 

Systems (Operations) Ltd SB J41-26-008 Revision 2. 

(2) Repositioning of the fire extinguisher bottle accomplished before the 

effective date of this AD in accordance with BAE Systems (Operations) 

Ltd SB J41-26-008 at Original Issue or at Revision 1 is acceptable to 

comply with the requirements of paragraph (1) of this AD. 

Ref. Publications: BAE Systems (Operations) Limited Service Bulletin J41-26-008 Part 2, 

Revision 2, dated 20 September 2011. 

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 required actions and the risk allowance have granted the issuance 

of a Final AD with Request for Comments, postponing the public 

consultation process after publication. 

3. Enquiries regarding this AD should be referred to the Safety Information 

Section, Executive 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.