EASA AD No.: 2012-0127R1

CAP.00110-001 © European Aviation Safety Agency. Al l rights reserved. 1/2 Proprietary document. Copies are not controlled. Co nfirm revision status through the EASA-Internet/Int ranet. 

## EASA AIRWORTHINESS DIRECTIVE

AD No.: 2012-0127R1

Date: 10 September 2012

Note: This Airworthiness Directive (AD) is issued b y EASA, acting in accordance with Regulation (EC) No 216/2008 on behalf of the Europe an Community, its Member States and of the European third countries that participate in th e 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 en sured by accomplishing any applicable ADs. Conseque ntly, no person may operate an aircraft to which an AD applies, except in accor dance with the requirements of that AD, unless othe rwise specified by the Agency [EC 2042/2003 Annex I, Part M.A.303] or agreed with the Authority of the State of Registry [EC 216/200 8, Article 14(4) exemption]. 

### Design Approval Holder’s Name :
BAE SYSTEMS (OPERATIONS) LTD Type/Model designation(s) :


### ATP aeroplanes

TCDS Number: EASA.A.192

Foreign AD: Not applicable

Revision: This AD revises EASA AD 2012-0127 dated 10 July 2012.



### ATA 26 Fire Protection – Engine and Auxiliary Power Unit A utomatic Fire

Extinguishers – Inspection/Overhaul

Manufacturer(s): British Aerospace plc, British Aer ospace (Commercial Aircraft) Ltd

Applicability: ATP aeroplanes, all serial numbers

Reason: A fire handle on a BAe 146 aeroplane was op erated on the ground as a precautionary measure after the throttle cable on t he affected engine failed, due to corrosion. The extinguisher failed to discha rge. Investigation results revealed that excess solder, which had been deposited during overhaul on the frangible plug of the extinguisher, prevented the release of the extinguishant. Prompte d by this report, Kidde Graviner, the fire extinguisher manufacturer, ident ified four further extinguishers of similar design that had the same i ssue. The ATP aeroplane extinguisher is one of those of a similar design. This condition, if not detected and corrected, coul d result in the failure of a fire bottle to discharge, which reduces the ability of the fire protection system to extinguish fires in the engine or Auxilia ry Power Unit (APU) fire zones, possibly resulting in damage to the aeroplan e and injury to the occupants. For the reasons described above, EASA issued AD 201 2-0127 to require a one-time inspection of the affected Part Number (P/ N) 57183 engine and APU fire extinguishers. In addition, this AD prohibited installation of a fire extinguisher, unless it has passed the inspection a s required by AD 2012- 0127. Revision 1 of this AD is issued to clarify that new extinguishers P/N 57183EASA AD No.: 2012-0127R1

CAP.00110-001 © European Aviation Safety Agency. Al l rights reserved. 2/2 Proprietary document. Copies are not controlled. Co nfirm revision status through the EASA-Internet/Int ranet. may be fitted with no additional inspection require d by this AD.

Effective Date: Revision 1: 17 September 2012 Original issue: 24 July 2012

Required Action(s) and Compliance Time(s): Required as indicated, unless accomplished previous ly: (1) For aeroplanes equipped with fire extinguishers manufactured by Kidde Graviner P/N 57183 (all dash numbers), within 12 mo nths after the effective date of this AD, remove and inspect each affected fire extinguisher in accordance with the instructions of paragraph 2.A of BAE Systems (Operations) Ltd Service Bulletin (SB) ATP- 26-016, which references Kidde Graviner SB 26-080 Revision 1. (2) Aeroplanes, which are equipped with P/N 57183 ( all dash numbers) fire extinguishers that have been overhauled by Kidde Gr aviner or Hugen, or have been overhauled in accordance with the instruc tions of Kidde Graviner Service Information Letter (SIL) 01-10, or have been overhauled in accordance with Kidde Graviner Component Mainten ance Manual (CMM) 26-21-52 at Revision 13 or later revision, ar e compliant with requirements of paragraph (1) of this AD. (3) From the effective date of this AD, do not inst all a Kidde Graviner P/N 57183 (all dash numbers) fire extinguisher on any a eroplane, unless it is new, or has passed the inspection in accordance wit h the instructions of Kidde Graviner SB No. 26-080 Revision 1, or it has been overhauled by Kidde Graviner or Hugen, or it has been overhauled in accordance with the instructions of Kidde Graviner SIL 01-10, or it has been overhauled in accordance with Kidde Graviner CMM 26-21-52 at Revi sion 13 or later revision. Note: For the purpose of this AD, an overhaul is co nsidered to include the replacement of the operating head. Replacement of t he pressure relief plug assembly only is not considered an overhaul.

Ref. Publications: BAE Systems (Operations) Limited SB ATP-26-016 Orig inal Issue dated 4 October 2011. Kidde Graviner SB 26-080 Revision 1 dated 27 July 2 011. Kidde Graviner SIL 01-10 dated 29 July 2010.
Kidde Graviner CMM 26-21-52 at Revision 13. The use of later approved revisions of these docume nts is acceptable for compliance with the requirements of this AD.

Remarks : 1. If requested and appropriately substantiated, EA SA can approve Alternative Methods of Compliance for this AD. 2. This AD was posted on 30 May 2012 as PAD 12-049R 1 for consultation until 27 June 2012. No comments were received durin g the consultation period. 3. Enquiries regarding this AD should be referred t o the Safety Information Section, Executive Directorate, EASA. E-mail ADs@easa.europa.eu

. 4. For any question concerning the technical conten t 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 1 292 675704; E-mail: RApublications@baesystems.com

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