EASA AD No.: 2013-0071

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EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2013-0071

Date: 19 March 2013

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 EU 748/2012, Part 21.A.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]. 

Design Approval Holder’s Name: 

Rolls-Royce Deutschland Ltd & Co KG 

Type/Model designation(s): 

Tay 650-15 and Tay 650-15/10 series 

engines 

TCDS Number: EASA.E.063 

Foreign AD: Not applicable 

Supersedure: None 

ATA 72 Engine – Low Pressure Compressor / Rotor Blade Leading Edge – 

Re-profiling

Manufacturer(s): Rolls-Royce plc 

Applicability: Tay 650-15 and Tay 650-15/10 engines, all serial numbers. 

These engines are known to be installed on, but not limited to, Fokker F28 

Mark 0100 series aeroplanes. 

Reason: Service history of Tay series engines discovered that low pressure compressor 

(LPC) fan blade leading edge could be subject of excessive deterioration. The 

LPC fan blade leading edge profile influences the LPC aerodynamic 

characteristics and stability. 

This condition, if not corrected, could reduce fan flutter margin and, in some 

cases, could lead to fan blade failure, possibly resulting in uncontained release 

of high energy debris with consequent damage to, and/or reduced control of, 

the aeroplane. 

To address this potential unsafe condition, Rolls-Royce Deutschland Ltd & Co 

KG (RRD) issued Alert Non-Modification Service Bulletin (NMSB) 

TAY-72-A1782 to provide instructions for re-profiling of LPC fan blade leading 

edge profile. 

For the reasons described above, this AD requires implementation of repetitive 

re-profiling for the affected parts. 

Effective Date: 02 April 2013 
EASA AD No.: 2013-0071

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Required Action(s) 

and Compliance 

Time(s): 

Required as indicated, unless accomplished previously: 

(1) Within the compliance time as specified in Table 1 of this AD, as 

applicable, and thereafter at intervals not to exceed 10 000 flight cycles 

(FC), accomplish a fan blade re-profiling in accordance with 

accomplishment instruction of RRD Alert NMSB TAY-72-A1782. 

Table 1 

Fan blade FC accumulated on 

the effective date of this AD Compliance time 

Less than 8 000 FC Before accumulating 10 000 FC 

Equal to or more than 8 000 FC Within 2 000 FC after the 

effective date of this AD 

Note: For the purpose of this AD, fan blade FC means FC accumulated by the 

fan blade since new or since the last re-profiling in accordance with RRD 

NMSB TAY-72-1603, or in accordance with Engine Manual Repair HRS3629 

(Engine Manual, Chapter 72-31-12, TASK 72-31-12-300-005), as applicable. 

(2) From the effective date of this AD, do not install a LPC module on an 

engine, or an engine on an aeroplane, unless in compliance with the 

requirements of this AD. 

(3) Compliance with the requirements of paragraphs (1) and (2) of this AD can 

be demonstrated by: 

(3.1) Revising as follows, the approved Aircraft Maintenance Programme 

(AMP) on the basis of which the operator or the owner ensures the 

continuing airworthiness of each operated aeroplane: 

 Incorporate the LPC fan blade repetitive re-profiling as specified in 

RRD Alert NMSB TAY-72-A1782, 

 and 

(3.2) Complying with the approved AMP as described in paragraph (3.1) 

of this AD. 

Ref. Publications: RRD Alert NMSB TAY-72-A1782 Initial Issue dated 06 February 2013 or 

Revision 1 dated 08 February 2013. 

RRD NMSB TAY-72-1603 Initial issue, dated 21 June 2004. 

Engine Manual Repair HRS3629 dated 15 December 2007. 

The use of later approved revisions of these documents 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 14 February 2013 as PAD 13-035 for consultation 

until 14 March 2013. No comments were received during the consultation 

period. 

3. Enquiries regarding this AD should be referred to the Safety Information 

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

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

this AD, please contact: 

Rolls-Royce Deutschland Ltd & Co KG 

Eschenweg 11 – 15827 Dahlewitz – Germany 

Tel: + 49 (0) 33 708 6 1200 (direct 1016) Fax: + 49 33 708 6 1212.