EASA AD No : 2011-0080 

EASA Form 110 Page 1/3 

EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2011-0080 

Date: 06 May 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 800 engines 

TCDS Number : UK CAA 1051 

Foreign AD : Not applicable 

Supersedure : None 

ATA 72 Engine – Front Combustion Liner Head Section – 

Inspection/Replacement 

Manufacturer(s): Rolls-Royce plc 

Applicability: Models RB211 Trent 800 series engines, all serial numbers. 

These engines are known to be installed on, but not limited to, Boeing 777 

series aeroplanes. 

Reason: Routine inspections have revealed cracking on the head sections of two 

Trent 800 front combustion liners. 

This condition, if not detected and corrected, could lead to hot gas breakout 

with subsequent downstream component release potentially leading to 

uncontained high energy debris, possibly resulting in damage to the 

aeroplane or injury to persons on the ground. 

To address this unsafe condition, EASA AD 2009-0187R1 was issued 

requiring a one-time borescope inspection of the head section of the front 

combustion liner and report findings to Rolls Royce. 

Rolls Royce have now defined a repetitive inspection programme for the 

RB211 Trent 800 series engines only. This programme allows crack 

propagation to be safely monitored during continued operation and for 

engines to be withdrawn from service before loss of combustion liner 

integrity can occur. 

For the reasons described above, this AD takes over the requirements of 

EASA AD 2009-0187R1 for the RB211 Trent 800 series engines only. It 

requires repetitive on-wing and in-shop inspections of the Front Combustion 

Liner Head Section for discrepancies and, depending on findings, corrective 

actions. 
EASA AD No : 2011-0080 

EASA Form 110 Page 2/3 

Effective Date: 20 May 2011 

Required Action(s) 

and Compliance 

Time(s): 

Required as indicated, unless already accomplished:

(1) ON-WING Inspections: 

(1.1) Within 1 000 Flight Cycles (FC) after the effective date of this AD 

and thereafter at intervals not to exceed 2 000 FC, inspect the 

Front Combustion Liner Head Section for cracking in accordance 

with the On-Wing Accomplishment Instructions of Rolls-Royce 

Non-Modification Service Bulletin (NMSB) RB211-72-AG456. 

(1.2) If, during any inspection as required by paragraph (1.1) of this AD, 

cracking is found, take the corrective actions as detailed in Table 1 

of this AD, as applicable. 

Table 1 – Inspection Findings and Follow-on Actions

Inspection Findings Action(s) and Compliance 

Time(s) 

Cumulative crack length up to 

150 mm 

(up to 2 heatshields) 

Reduce the inspection intervals 

to 250 FC 

Cumulative crack length 150 

mm to 300mm 

(up to 4 heatshields) 

Reduce the inspection intervals 

to 100 FC 

Cumulative crack length 300 

mm to 450mm 

(up to 6 heatshields) 

Replace the engine within 50 

FC 

Cumulative crack length 450 

mm to 900mm 

(up to 12 heatshields) 

Replace the engine within 5 FC

Cumulative crack length greater 

than 900 mm 

(more than 12 heatshields) 

Replace the engine before next 

flight 

(2) IN-SHOP Inspections: 

(2.1) At every shop visit after the effective date of this AD, inspect the 

Front Combustion Liner Head Section for cracking in accordance 

with the In-shop Accomplishment Instructions of Rolls-Royce 

NMSB RB211-72-AG456. 

(2.2) If any cracking is identified, before release of the engine to service, 

replace the Front Combustion Liner Head Section with a new or 

serviceable part. 

(2.3) Accomplishment of a shop visit inspection as required by 

paragraph (2.1) of this AD may substitute the accomplishment of 

an on-wing inspection as required by paragraph (1) of this AD. 

(3) Replacement of the Front Combustion Liner Head Section with a new or 

serviceable part does not constitute terminating action for the repetitive 

inspection requirements of this AD. After replacement, the requirements 

of this AD remain applicable.

Ref. Publications: Rolls-Royce Non-Modification Service Bulletin RB211-72-AG456 dated 09 

September 2010. 
EASA AD No : 2011-0080 

EASA Form 110 Page 3/3 

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 05 April 2011 as PAD 11-038 for consultation 

until 03 May 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 your 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.