SAFRAN HELICOPTER ENGINESARRIEL 1

ID: 2018-0003
Issue date: 2018-01-05
Effective date: 2018-01-19
Source: EASA
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Time Limits / Maintenance Checks – Airworthiness Limitation Section – Amendment / Implementation

EASA AD No.: 2018-0003


Airworthiness Directive
AD No.: 2018-0003
Issued: 05 January 2018
Note: This Airworthiness Directive (AD) is issued by EASA, acting in accordance with Regulation
(EC) 216/2008 on behalf of the European Union, 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 Regulation (EU) 748/2012, Part 21.A.3B. In accordance with Regulation (EU) 1321/2014 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 [Regulation (EU) 1321/2014 Annex I,
Part M.A.303] or agreed with the Authority of the State of Registry [Regulation (EC) 216/2008, Article 14(4) exemption].


Design Approval Holder’s Name: Type/Model designation(s):
SAFRAN HELICOPTER ENGINES ARRIEL 1E2 engines

Effective Date:
19 January 2018
TCDS Number(s): EASA.E.073
Foreign AD: Not applicable
Supersedure: This AD supersedes EASA AD 2017-0061 dated 07 April 2017.


ATA 05 – Time Limits / Maintenance Checks – Airworthiness Limitation Section –
Amendment / Implementation


Manufacturer(s):

SAFRAN Helicopter Engines, formerly Turboméca, S.A.

Applicability:

ARRIEL 1E2 engines, all manufacturer serial numbers.

These engines are known to be installed on, but not limited to, Airbus Helicopters Deutschland
(formerly Eurocopter Deutschland) MBB-BK117-C1 and MBB-BK117-C2 helicopters.

Reason:

The airworthiness limitations and maintenance tasks applicable to the ARRIEL 1E2 engines series are
currently specified in the applicable ARRIEL 1E2 maintenance manual (MM), Section 05-10, which is
approved by EASA. These limitations and instructions have been identified as mandatory for
continued airworthiness.

Failure to implement these limitations or accomplish these tasks could result in an unsafe condition.

SAFRAN Helicopter Engines recently issued ARRIEL 1E2 MM Section 05-10 dated 02 February 2017,
hereafter referred to as ‘the ALS’ in this AD, to incorporate the instructions originally provided by


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EASA AD No.: 2018-0003

Turboméca Mandatory Service Bulletin (SB) 292 72 0842 version C. The implementation of that SB
was required by EASA AD 2017-0061.

For the reasons described above, this AD retains the requirements of EASA AD 2017-0061, which is
superseded, and requires implementation of the airworthiness limitations and maintenance tasks as
specified in the ALS.

Required Action(s) and Compliance Time(s):

Required as indicated, unless accomplished previously:

Replacement of Life-Limited Parts / Maintenance Tasks:
(1) From the effective date of this AD, accomplish the following actions, as specified in the ALS:

(1.1) Replace each component before exceeding the applicable life limit, and

(1.2) Within the thresholds and intervals (see Note 1 of this AD), accomplish all applicable
maintenance tasks.

Note 1: For the purpose of this AD, the thresholds and intervals as defined in the ALS may include a
‘tolerance’ for certain tasks.

Corrective Action(s):
(2) In case of finding discrepancies (as defined in the ALS) during accomplishment of any task as
required by paragraph (1) of this AD, within the compliance time specified in the ALS,
accomplish the applicable corrective actions in accordance with the applicable SAFRAN
Helicopter Engines maintenance documentation. If no compliance time is identified in the ALS,
accomplish the applicable corrective actions before next flight. If a detected discrepancy is not
identified in the ALS, before next flight, contact SAFRAN Helicopter Engines for approved
instructions and accomplish those instructions accordingly.

Aircraft Maintenance Programme (AMP) Amendment:
(3) Within 12 months after the effective date of this AD, revise the approved AMP, on the basis of
which the operator or owner of the helicopter (on which an affected engine is installed)
ensures the continuing airworthiness of each operated engine, by incorporating the limitations,
tasks and associated thresholds and intervals described in the ALS.

Credit:
(4) For an AMP that, on the effective date of this AD, is already updated to incorporate the
maintenance tasks and life limitations as specified in ARRIEL 1E2 MM Section 05-10 dated
05 June 2014, that action ensures (see Note 2 of this AD) the continued accomplishment of
those tasks and limitations.

Consequently, for an engine to which that AMP applies, it is acceptable to accomplish the new
and more restrictive tasks and limitations, as defined in, and within the compliance times (see
Note 1 of this AD) as specified in, the ALS, to comply with paragraph (1) of this AD.
For that AMP, it is acceptable to incorporate the new and more restrictive tasks and limitations,
as defined in the ALS, into the AMP to comply with paragraph (3) of this AD.


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EASA AD No.: 2018-0003

Recording of AD
Compliance:

(5) When the AMP of a helicopter has been revised as required by paragraph (3) or (4) of this AD,
as applicable, that action ensures (see Note 2 of this AD) continued accomplishment of the
tasks as required by paragraphs (1) and (2) of this AD for the affected engine(s) installed on that
helicopter. Consequently, after revising the AMP, as required by paragraph (3) or (4) of this AD,
as applicable, it is not necessary that accomplishment of individual tasks is recorded for
demonstration of AD compliance on a continued basis.

Note 2: For affected ARRIEL 1E2 engines installed on helicopters registered in Europe, complying
with the approved AMP, as specified in paragraph (3) or (4) of this AD, as applicable, is required by
Commission Regulation (EU) 1321/2014, Part M.A.301, paragraph 3.

Ref. Publications:

SAFRAN Helicopter Engines ARRIEL 1E2 MM, Section 05-10, dated 05 June 2014 and dated
02 February 2017.

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 01 December 2017 as PAD 17-160 for consultation until 29 December
2017. No comments were received during the consultation period.

3. Enquiries regarding this AD should be referred to the EASA Safety Information Section,
Certification Directorate. E-mail: ADs@easa.europa.eu.

4. For any question concerning the technical content of the requirements in this AD, please
contact: SAFRAN Helicopter Engines, ARRIEL 1 Customer Support, 40220 Tarnos, France
Fax: +33 5 59 74 45 15, or contact SAFRAN on-line for technical assistance.




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This is a partial extract of the full document - please refer to the actual report for full information.
Sources as credited.