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EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2007 – 0136 

Date: 14 May 2007

No person may operate an aircraft to which an Airworthiness Directive applies, except in accordance with the 

requirements of that Airworthiness Directive unless otherwise agreed with the Authority of the State of Registry.

Type Approval Holder’s Name: 

ROLLS-ROYCE PLC

Type/Model designation(s): 

RB211 Trent 700 series engines 

TCDS Number: EASA:- E042 

Foreign AD: Not applicable. 

Supersedure: None. 

ATA 72 Engine – IP Compressor Shaft - Inspection 

Manufacturer: Rolls-Royce PLC 

Applicability: Models RB211 Trent 768-60, 772-60, 772B-60 and 772C-60 engines. 

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

A330 series aeroplanes. 

Reason: This Airworthiness Directive requires inspections for cracks in the stage 2-

3 interstage spacer of the IP Compressor Rotor during shop visit. 

This action is necessary following the discovery of IP Compressor Rotor 

stage 2-3 interstage spacer cracking on an in-service Trent 700 engine. 

Stress analysis of the damaged rotor has shown a possible threat to the 

rotor integrity, the cracking therefore presents a potential unsafe 

condition. The cause of the cracking is currently under investigation. 

Effective Date: 29 May 2007 

Compliance: 1) Inspection- In-shop 

Inspect the IP compressor drum stage 2-3 interstage spacer for cracking 

at every shop visit as follows: 

a) If the IP Compressor rotor is not removed from the IP 

Compressor Casing, inspect the IP compressor drum stage 2-3 

interstage spacer by borescope in accordance with Rolls-Royce 

RB211 Propulsion System Alert Non Modification Service Bulletin 

RB211-72-AE753 revision 1 (or later approved issue) section 3 

Accomplishment Instructions (paragraphs F and G are applicable 
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in revision 1). 

b) If the IP Compressor rotor is removed from the IP Compressor 

Casing inspect the IP compressor drum stage 2-3 interstage 

spacer by Eddy Current Inspection in accordance with RollsRoyce RB211 Propulsion System Alert Non Modification Service 

Bulletin RB211-72-AF197 initial issue (or later approved issue) 

section 3 Accomplishment Instructions. 

IP Compressor drums on which cracking is identified by the above means 

must be rejected from service. 

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

Bulletin RB211-72-AF197 initial issue and Alert Non Modification Service 

Bulletin RB211-72-AE753 revision 1. 

Remarks: 1. If requested and appropriately substantiated the responsible EASA 

manager for the related product has the authority to accept Alternative 

Methods of Compliance (AMOCs) for this AD. 

2. This AD was published as PAD 07-059 on 16 April 2007 for 

consultation until 10 May 2007. No comments were received during this 

period. 

3. Enquiries regarding this Airworthiness Directive should be referred to 

Mr. M. Capaccio, Airworthiness Directive Focal Point - Certification 

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

4. For any questions concerning the technical 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.