EASA AD No.: 2012-0161

CAP.00110-001 © European Aviation Safety Agency. Al l rights reserved. 1/3 Proprietary document. Copies are not controlled. Co nfirm revision status through the EASA-Internet/Int ranet. 

## EASA AIRWORTHINESS DIRECTIVE

AD No.: 2012-0161

Date: 24 August 2012

Note: This Airworthiness Directive (AD) is issued b y EASA, acting in accordance with Regulation (EC) No 216/2008 on behalf of the European Communit y, its Member States and of the European third countries that participate in the ac tivities 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 accordan ce with the requirements of that AD, unless otherwi se 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, A rticle 14(4) exemption].. 

### Design Approval Holder’s Name: Rolls-Royce Deutschland Ltd & Co KG Type/Model designation(s): BR700-710 series, all models

TCDS Number: EASA.E.018

Foreign AD: Not applicable

Supersedure: None



### ATA 72 Engine – Accessory Gearbox Module – Replacement of the Fuel Pump Splined Coupling

Manufacturer(s): Rolls-Royce Deutschland Ltd & Co K G (RRD)

Applicability: BR700-710A1-10 and BR700-710A2-20 e ngines, all manufacturer serial numbers. BR700-710C4-11 engines, all manufacturer serial num bers which: (a) have hardware configuration standard 710C4-11 e ngraved on the engine data plate (RRD Service Bulletin (SB) SB-BR7 00-72-101466 standard not incorporated), or (b) have hardware configuration standard 710C4-11/1 0 engraved on the engine data plate (RRD SB SB-BR700-72-101466 standa rd incorporated). These engines are known to be installed on, but not limited to, Gulfstream GV, GV-SP (G500, G550) and Bombardier BD-700-1A10, BD-7 00-1A11 series aeroplanes.
Reason: In-service experience of RRD BR700-710 fuel pump installed on the rear face of the accessory gearbox identified premature wear of the splined coupling, which caused damage to the splined coupling. This condition, if not corrected, could lead to fai lure of engine fuel supply, likely resulting in an uncommanded in-flight shut down and consequent reduced control of the aeroplane. To address this potential unsafe condition, RRD iss ued Alert Non-Modification Service Bulletin (NMSB) BR700-72-A900509, providing instructions to replaceEASA AD No.: 2012-0161

CAP.00110-001 © European Aviation Safety Agency. Al l rights reserved. 2/3 Proprietary document. Copies are not controlled. Co nfirm revision status through the EASA-Internet/Int ranet. the affected fuel pump splined couplings. For the reasons described above, this AD introduces a mandatory replacement interval for the affected fuel pump splined couplin gs.

Effective Date: 07 September 2012

Required Action(s) and Compliance Time(s): Required as indicated, unless accomplished previous ly: (1) Initially, within the compliance time as specif ied in Table 1 of this AD, as applicable, and, thereafter, at intervals not to ex ceed 4 000 engine hours (EH), replace each engine fuel pump splined couplin g with a serviceable part in accordance with the instructions of RRD NMS B-BR700-72-A900509 at Revision 2. Table 1 Initial replacement thresholds

EH accumulated since new, on the effective date of this AD Compliance time

Equal to or more than 3 750 EH 250 EH after the eff ective date of this AD
Less than 3 750 EH Before exceeding 4 000 EH (2) Fuel coupling replacements, accomplished before the effective date of this AD in accordance with the instructions of RRD NMSB- BR700-72-A900509 at original issue or Revision 1, are acceptable to comply with the initial requirements of this AD. After the effective date o f this AD, the instructions of RRD NMSB-BR700-72-A900509 at Revision 2 (or late r approved revision) must be used. (3) From the effective date of this AD do not insta ll a fuel pump with an affected splined coupling on an engine, or an engin e with an affected fuel pump splined coupling installed, on an aeroplane, u nless in accordance with the requirements of this AD. (4) Compliance with the requirements of paragraphs (1) and (3) of this AD can be demonstrated by: (4.1) Revising as follows, unless accomplished prev iously, the approved Aircraft Maintenance Programme (AMP) on the basis o f which the operator or the owner ensures the continuing airwor thiness of each operated aeroplane: Incorporate the fuel pump splined coupling 4 000 E H replacement interval as specified in RRD Alert NMSB SB-72-A9005 09 Revision 2,
and (4.2) Complying with the approved AMP as described in paragraph (4.1) of this AD.

Ref. Publications: RRD Alert NMSB-BR700-72-A900509 Revision 2 dated 17 July 2012. The use of later approved revisions of this documen t 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 23 July 2012 as PAD 12-086 for consultation until 20 August 2012. The Comment Response Document can b e found at http://ad.easa.europa.eu

. 3. Enquiries regarding this AD should be referred t o the Safety InformationEASA AD No.: 2012-0161

CAP.00110-001 © European Aviation Safety Agency. Al l rights reserved. 3/3 Proprietary document. Copies are not controlled. Co nfirm revision status through the EASA-Internet/Int ranet. 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: Tel.: +49 (0) 33708 6 1200, Fax: +49 (0) 33708 6 12 12.