EASA AD No.: 2011-0175

EASA Form 112 Page 1/2 

## EASA AIRWORTHINESS DIRECTIVE

AD No.: 2011-0175

Date: 08 September 2011

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 participat e 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 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].


### Type Approval Holder’s Name : Rolls-Royce plc Type/Model designation(s) :
RB211-524 series engines

TCDS Number : UK CAA No. 1046 and 1048

Foreign AD : Not applicable

Supersedure : None



### ATA 73 Engine Fuel and Control – Full Authority Fuel Contr oller (FAFC) – Modification

Manufacturer(s): Rolls-Royce plc

Applicability: RB211-524G2-19, RB211-524G2-T-19, RB 211-524G3-19, RB211-524G3 T-19, RB211-524H2-19, RB211-524H2-T-19, RB211-524H- 36 and RB211- 524H-T-36 engines, all Serial Numbers up to 13819 i nclusive. These engines are known to be installed on, but not limited to, Boeing 747 and Boeing 767 series aeroplanes.
Reason: Several instances of fan blade cracking hav e been reported. The results of the subsequent technical investigati on concluded that the cracking was caused by fan blade flutter at certain engine settings during prolonged ground running. This condition, if not corrected, could affect the integrity of the fan blades, leading to cracking of multiple fan blades and coul d possibly result in engine failure and release of uncontained high energy debr is. To address this potential unsafe condition, Rolls R oyce have developed modified FAFC software in order to ensure that the engine cannot experience prolonged running on ground at engine se ttings that would potentially jeopardise the integrity of the fan bla des. For the reasons described above, this AD requires r eplacement of the FAFC with a modified one, incorporating software mo dification at issue 17.EASA AD No.: 2011-0175

EASA Form 112 Page 2/2 Effective Date: 22 September 2011

Required Action(s) and Compliance Time(s): Required as indicated, unless accomplished previous ly: (1) Within 40 months after the effective date of th is AD, modify the engine by installing an FAFC featuring software at issue 1 7 in accordance with paragraph 3 of the Accomplishment Instructions of R olls-Royce Service Bulletin (SB) RB211-73-AG054, Revision 2. (2) Engines which have been modified, before the ef fective date of this AD, in accordance with previous revisions of Rolls-Royc e SB RB211-73- AG054 are compliant with the requirement of paragra ph (1) of this AD. (3) From the effective date of this AD, do not inst all an FAFC on an engine unless the FAFC to be installed on that engine inco rporates software at issue 17.
Ref. Publications: Rolls-Royce SB RB211-73-AG054 Re vision 2 dated 29 June 2011. 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 26 July 2011 as PAD 11-078 for consultation until 23 August 2011. The Comment Response Document can be found at http://ad.easa.europa.eu/

. 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 your designated Rolls-Ro yce representative or download the publication from your Aeromanager a ccount at www.aeromanager.com

. If you do not have a designated representative or A eromanager account, please contact Corporate Communications at Rolls-Royce plc. PO Box 31, Derby, DE24 8BJ, United Kingdom, telephone: +44 (0) 1332 242424, or send an e-mail t hrough http://www.rolls-royce.com/contact/civil_team.jsp identifying the correspondence as being related to Airworthiness Directives :