EASA AD No.: 2011-0050 

EASA Form 110 Page 1/3 

EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2011-0050 

Date: 21 March 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 AD applies, except in accordance with the requirements of that AD 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 : 

ROLLS-ROYCE PLC 

Type/Model designation(s) : 

RB211-Trent 500 series engines 

TCDS Number : EASA TCDS No. E.060 

Foreign AD : N/A 

Supersedure : N/A 

ATA 73 Engine – Right-Hand (RH) Fuel Manifold Assembly – Cleaning / 

Replacement 

Manufacturer(s): Rolls-Royce plc 

Applicability: RB211 Trent 500 series engines, all serial numbers. 

These engines are known to be installed, but not limited to Airbus A340 

series aeroplanes. 

Reason: A Trent 500 engine has been found with thermal distress of the Intermediate 

Pressure (IP) Turbine Nozzle Guide Vanes. The resultant investigation found 

the root cause to be carbon blockage of the fuel spray nozzles. The source 

of the carbon has been identified to be the RH fuel manifold assembly. 

Analysis has verified that low fuel velocity and thermal input may cause 

formation of carbon in a specific region of the RH fuel manifold. 

As advanced thermal distress of IP Turbine components may potentially 

result in uncontained, high energy debris release, the formation of carbon in 

the RH fuel manifold constitutes a potentially unsafe condition. 

To address and correct this unsafe condition, Rolls Royce have developed a 

cleaning or replacement programme of the RH fuel manifold and an optional 

part replacement. 

For the reason described above, this AD requires initial and repetitive 

cleaning or replacement of the RH fuel manifold assembly. It proposes as 

well accomplishment of a modification which constitutes terminating action 

for the repetitive cleaning or replacement. 
EASA AD No.: 2011-0050 

EASA Form 110 Page 2/3 

Effective Date: 04 April 2011 

Required Action(s) 

and Compliance 

Time(s): 

Required as indicated, unless accomplished previously:

(1) Within the compliance time and depending on engine configurations as 

indicated in Table 1 of this AD, clean and inspect the RH fuel manifold 

assembly or replace the RH fuel manifold assembly with a serviceable 

RH fuel manifold assembly in accordance with all instructions contained 

in Rolls Royce Non Modification Service Bulletin 73 No. 73-AG422 

Revision 1. Repeat those actions at intervals not to exceed the ones 

indicated in Table 1 of this AD. 

Note 1: the inspection following cleaning serves to provide assurance 

that the cleaning operation has been effective and proper. 

Note 2: a serviceable RH fuel manifold assembly is a part which either is 

new or has been cleaned and inspected in accordance with 

instructions contained in Rolls Royce Non Modification Service 

Bulletin 73 No. 73-AG422 Revision 1. 

(2) Accomplishment of Rolls Royce RB211 Propulsion System Service 

Bulletin Fuel and Control – Introduction of the Revised Right Hand Fuel 

Manifold Assembly – Modification Number 73-G547 constitutes 

terminating action for the repetitive cleaning or replacement requirements 

of this AD for that engine. 

Ref. Publications: Rolls-Royce RB211 Propulsion System Non Modification Service Bulletin 

(NMSB) No. 73-AG422 Revision 1. 

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. This AD was posted on 04 February 2011 as PAD 11-015 for 

consultation until 04 March 2011. No comments were received during 

the consultation period. 

3. Enquiries regarding this AD should be referred to the Airworthiness 

Directives, Safety Management & Research Section, Certification 

Directorate, EASA. E-mail ADs@easa.europa.eu. 

4. For any question concerning the technical content of the requirements in 

this AD, please contact designated Rolls-Royce representative or 

download the publication from your Aeromanager account at 

www.aeromanager.com. 

If you do not have a designated representative or Aeromanager 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 through 

http://www.rolls-royce.com/contact/civil_team.jsp identifying the 

correspondence as being related to Airworthiness Directives. 
EASA AD No.: 2011-0050 

EASA Form 110 Page 3/3 

Annex to EASA AD 2011-0050 – Table 1 

Engine Configurations at the effective date of this AD Compliance Time 

for the Initial 

Cleaning and 

Inspection or Initial 

Replacement of Part

Intervals for the 

repetitive 

Cleanings and 

Inspections or 

Replacement of 

Part

and the engine has 

accumulated a total service 

life of 3 200 Cycles Since 

New (CSN) or more 

Within 200 Cycles 

after the effective 

date of this AD 

and the engine has 

accumulated a total service 

life of greater than or equal 

to 2 600 CSN but less than

3 200 CSN 

Within 400 Cycles 

after the effective 

date of this AD 

and the engine has 

accumulated a total service 

life of 1 300 CSN but less 

than 2 600 CSN 

Within 600 Cycles 

after the effective 

date of this AD 

The engine has not been refurbished 

in accordance with the Engine 

Management Programme (EMP) issue 

7 (May 2010) onwards and it cannot

be suitably demonstrated that RollsRoyce Repeater Technical Variance 

TV97291, July 2009 onwards, or

cleaning of manifold in accordance 

with Overhaul Process Manual, 

TSD594-J Task 70-00-00-100-121 as 

instructed in Component Maintenance 

Manual, Tubes, Hoses and Ducts, 

October 2009 onwards, or fitment of a 

new RH manifold assembly or

accomplishment of Rolls-Royce 

RB211 Propulsion System Non 

Modification Service Bulletin (NMSB) 

No. 73-AG327 has been carried out, 

and the engine has not 

accumulated a total service 

life of 1 300 CSN 

At the latest when the 

engine has 

accumulated 1 900 

Cycles Since New 

(CSN) 

the engine has been 

refurbished in accordance 

with Level 3 or Level 4 as 

defined in issue 7 or any 

later issue of the Engine 

Management Programme 

(EMP) (i) 

Rolls-Royce Repeater 

Technical Variance 

TV97291, July 2009 

onwards, has been carried 

out (ii) 

cleaning of manifold in 

accordance with Overhaul 

Process Manual, TSD594-J 

Task 70-00-00-100-121 as 

instructed in Component 

Maintenance Manual, 

Tubes, Hoses and Ducts, 

October 2009 onwards, has 

been carried out (iii) 

It can be suitably demonstrated that 

one of the following applies: 

fitment of a new RH 

manifold assembly or 

accomplishment of RollsRoyce RB211 Propulsion 

System Non Modification 

Service Bulletin (NMSB) No. 

73-AG327 has been carried 

out (iv) 

At the latest when the 

engine has 

accumulated 1300 

Cycles after prior 

accomplishment of 

actions (i), (ii), (iii) or 

(iv) 

Within 1 300 

Cycles since last 

Cleaning and 

Inspection or last 

Replacement of 

RH fuel manifold 

assembly