EASA AD No.: 2009-0083

EASA Form 110 Page 1/2 

## EASA AIRWORTHINESS DIRECTIVE

AD No: 2009 - 0083

Date: 16 April 2009

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 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 ensured by a ccomplishing any applicable ADs. Consequently, no person may opera te an aircraft to which an Airworthiness Directive applies, except in accordance with the requirements of that Airworthiness Direc tive unless otherwise specified by the Agency [EC 2042/2003 Annex I, Part M.A.303] or agreed with the Authority of the State of Regi stry [EC 216/2008, Article 14(4) exemption].


### Type Approval Holder’s Name :

ROLLS-ROYCE PLC Type/Model designation(s) :

RB211-524 Series Engines

TCDS Number : UK-CAA TCDS No. 1043

Foreign AD : Not applicable

Supersedure : None



### ATA 72 Engine – Low Pressure Turbine (LPT) Casing – Inspection

Manufacturer(s): Rolls-Royce plc

Applicability: RB211-524C2-19 and RB211-524C2 -B-19 engines, all serial numbers.
These engines are known to be installed, but not limited to Boeing 747 series aircraft.

Reason: A number of LPT casings have been found cracked during engine shop visit. Cracking of the LPT casing reduces the capability of the casing to contain debris in the event of an LPT stage 1 blade failure. Therefore, blade failure in an engine featuring a cracked LPT casing may result in release of uncontained high energy debris.
For the reason described above, this AD requires repetitive inspections and corrective actions, depending on findings.

Effective Date: 30 April 2009

Required Action(s) and Compliance Time(s): Initial Inspection Requirements:

1. If at the effective date of this Airw orthiness Directive the life of the LPT Casing is known and less than 4 500 Cycles Since New (CSN), carry outthe actions defined in Section 3. Accomplishment Instructions of RollsRoyce Non-Modification Service Bulletin (NMSB) No. 72-AG076 before the life of the LPT casi ng has reached 4 500 CSN.

2. If at the effective date of this Airw orthiness Directive the life of the LPTEASA AD No.: 2009-0083

EASA Form 110 Page 2/2 Casing is known and greater than or equal to 4 500 CSN and the life of the LPT casing since last full Fluorescent Penetrant Inspection (FPI) is either known and greater than 4 500 Cycles or not known, carry out the actions defined in Section 3. Acco mplishment Instructions of RollsRoyce NMSB No. 72-AG076 at the next shop visit.

3. If at the effective date of this Airw orthiness Directive the life of the LPT Casing is known and greater than or equal to 4 500 CSN and the life of the LPT casing since last full FPI is known and less than 4 500 Cycles, carry out the actions defined in Sect ion 3. Accomplishment Instructions of Rolls-Royce NMSB No. 72-AG076 before the life of the LPT Casing has reached 4 500 Cycles since last full FPI.

4. If at the effective date of this Airw orthiness Directive the life of the LPT Casing is not known and the life of the LPT casing since last full FPI is either not known or greater than or equal to 4 500 Cycles, carry out the actions defined in Section 3. Acco mplishment Instructions of RollsRoyce NMSB No. 72-AG076 at the next shop visit.

5. If at the effective date of this Airw orthiness Directive the life of the LPT Casing is not known and the life of the LPT casing since last full FPI is known and less than 4 500 Cycles, carry out the actions defined in Section 3. Accomplishment Instructions of Rolls-Royce NMSB No. 72-AG076 before the life of the LPT Casing has reached 4 500 Cycles since last full FPI.
Repetitive Inspection Requirements: Following accomplishment of the actions associated with the initial inspection requirements detailed above, carry out the actions defined in Section 3. Accomplishment Instructions of Rolls-Royce NMSB No. 72-AG076 at intervals not exceeding 4 500 Cycles.

Ref. Publications: Rolls-Royce RB211 Propulsi on System Non-Modification Service Bulletin (NMSB) No. 72-AG076
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 09 February 2009 as PAD 09-032 for consultation until 09 March 2009. The Comment Response Document can be found at http://ad.easa.europa.eu

. 3. Enquiries regarding this AD should be referred to the Airworthiness Directives, Safety Management & Re search Section, Certification Directorate, EASA. E-mail ADs@easa.europa.eu
4. For any question concerning the tec hnical content of the requirements in this AD, please contact: Rolls-Royce plc. PO Box 31, Derby, DE24 8BJ, United Kingdom. Phone: +44 (0) 1332 242424, Fax: +44 (0) 1332 249936. Email: tech.help@rolls-royce.com or download the publication from https://www.aeromanager.com