BRP-ROTAX GmbH & Co KG912 A912 F912 S914 F

ID: 2017-0208
Issue date: 2017-10-13
Effective date: 2017-10-27  
Source: EASA
LinkOpen

 AD_2017-0208_1

Share

        QR_Code

Reciprocating Engine – Valve Push Rod Assembly – Inspection / Replacement

EASA AD No.: 2017-0208


Airworthiness Directive
AD No.: 2017-0208
Issued: 13 October 2017
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):
BRP-ROTAX GmbH & Co. KG Rotax 912 and 914 engines

Effective Date:
27 October 2017
TCDS Number(s): EASA.E.121 and EASA.E.122
Foreign AD: Not applicable
Supersedure: None


ATA 85 – Reciprocating Engine – Valve Push Rod Assembly – Inspection /
Replacement


Manufacturer(s):

BRP-Rotax GmbH & Co. KG (formerly BRP-Powertrain GmbH & Co. KG; Bombardier-Rotax GmbH &
Co. KG; Bombardier-Rotax GmbH)

Applicability:

Rotax 912 A1, 912 A2, 912 A3 and 912 A4 engines, Rotax 912 F2, 912 F3 and 912 F4 engines, Rotax
912 S2, 912 S3 and 912 S4 engines, Rotax 912 iSc2 Sport and 912 iSc3 Sport engines, and Rotax
914 F2, 914 F3 and 914 F4 engines, all serial numbers.

These engines are known to be installed on, but not limited to, the aeroplane types and models as
listed in Appendix 1 of this AD. The installation of these engines was either done by the respective
aeroplane manufacturer, or through modification of the aircraft by Supplemental Type Certificate
(STC).

Reason:

Power loss and engine RPM drop have been reported on Rotax 912/914 engines in service. It has
been determined that, due to a quality control deficiency in the manufacturing process of certain
valve push-rod assemblies, manufactured between 08 June 2016 and 02 October 2017 inclusive,
partial wear on the rocker arm ball socket may occur, which may lead to malfunction of the valve
train.


TE.CAP.00110-006 © European Aviation Safety Agency. All rights reserved. ISO9001 Certified. Page 1 of 4
Proprietary document. Copies are not controlled. Confirm revision status through the EASA-Internet/Intranet.
An agency of the European Union
EASA AD No.: 2017-0208

This condition, if not detected and corrected, may lead to rough engine operation and loss of
power, possibly resulting in a forced landing, with consequent damage to the aeroplane and injury
to occupants.

To address this potential unsafe condition, BRP-Rotax issued Service Bulletin (SB) SB-912 i-008 /
SB-912-070 / SB-914-052 (single document), providing applicable instructions.

For the reason described above, this AD requires a one-time inspection and, depending on findings,
replacement of affected parts. This AD also prohibits installation of affected parts on an engine.

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

Required as indicated, unless accomplished previously:

Note 1: Valve push-rod assemblies Part Number (P/N) 854861 are hereafter referred to as “valve
push-rod” in this AD.

Note 2: BRP Rotax SB-912 i-008 / SB-912-070 / SB-914-052 (single document) is hereafter referred
to as “the SB” in this AD.

Note 3: For the purpose of this AD, Group 1 engines are those having a serial number (s/n) as listed
in the SB (see Note 2 of this AD); or an engine, having any s/n, on which a valve push-rod (see Note
1 of this AD) has been replaced in service between 08 June 2016 and the effective date of this AD
inclusive. Group 2 engines are those that are not Group 1.

Inspection:
(1) For Group 1 engines (see Note 3 of this AD): Within the compliance time identified in Table 1 of
this AD, as applicable, visually inspect the push-rod ball sockets of each valve push-rod in
accordance with the instructions of the SB.

Table 1 – Visual Inspection of Affected Assembly

Engine Flight Hours (FH)
since first installation on Compliance Time
an aircraft
Before exceeding 170 FH since first installation of the
160 FH or less engine on an aircraft, or within 3 months after the
effective date of this AD, whichever occurs first
Within 10 FH or 3 months, whichever occurs first after
More than 160 FH
the effective date of this AD

Corrective action:
(2) If, during the inspection as required by paragraph (1) of this AD, a valve push-rod having black
surface is detected, before next flight, replace that valve push-rod and its affected parts (see
Note 4 of this AD) with serviceable ones in accordance with the instructions of the SB.

Note 4: for the purpose of this AD, an affected part is listed in Table 2 of this AD.


TE.CAP.00110-006 © European Aviation Safety Agency. All rights reserved. ISO9001 Certified. Page 2 of 4
Proprietary document. Copies are not controlled. Confirm revision status through the EASA-Internet/Intranet.
An agency of the European Union
EASA AD No.: 2017-0208

Table 2 – Affected Part

Part Part Number
Vale push-rod assembly 854861
Rocker arm left 854383
Rocker arm right 854393

Part installation:
(3) For Group 1 and Group 2 engines: From the effective date of this AD, it is allowed to install on
any engine a valve push-rod (see Note 1 of this AD), provided it is determined it was not
manufactured between 08 June 2016 and 02 October 2017 inclusive.

Ref. Publications:

BRP Rotax SB-912 i-008 / SB-912-070 / SB-914-052 (single document) Revision 1 dated 12 October
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. Based on the required actions and the compliance time, EASA have decided to issue a Final AD
with Request for Comments, postponing the public consultation process until after publication.

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: BRP-Rotax GmbH & Co. KG, Telephone: +43 7246 601 0, Fax: +43 7246 601 9130,
E-mail: airworthiness@brp.com, Website www.flyrotax.com.




TE.CAP.00110-006 © European Aviation Safety Agency. All rights reserved. ISO9001 Certified. Page 3 of 4
Proprietary document. Copies are not controlled. Confirm revision status through the EASA-Internet/Intranet.
An agency of the European Union
EASA AD No.: 2017-0208

Appendix 1 – List of Aircraft known to have Rotax engine(s) installed,
either done by the respective aircraft manufacturer or through modification of the aircraft by
Supplemental Type Certificate

Type Certificate Holder Type/model
Aero AT SP z.o.o. AT-3R100
Aero-East-Europe Sila 450C
Aeromot-Indústria Mecânico- AMT-200 “Super Ximango” and AMT-300 “Turbo Super
Metalúrgica Ximango”
Aircraft Design and Certification Ltd. D4 “Fascination”
Aquila Aviation GmbH Aquila AT01
Textron Aviation (formerly Cessna 150 and A150 aeroplanes (and Reims F150 and FA150),
Aircraft Company) modified by various STC
Costruzioni Aeronautiche TECNAM S.r.l. P92, P2002, P2006T and P2008 JC
Czech Sport Aircraft A.S. PS-28 “Cruiser”
Diamond Aircraft Industries GmbH H 36 “Dimona”, HK 36 “Super Dimona”, DV 20 “Katana”
Diamond Aircraft Industries Inc. DA20-A1 “Katana”
E.I.S. Aircraft GmbH RF 5 “Sperber”
Evektor spol. s.r.o. EV-97 VLA, SportStar RTC
Flight - Design CTLS-ELA
Grob Aircraft AG G109
Issoire Aviation APM-20 “Lionceau”
M&D Flugzeugbau GmbH & Co. KG AVO 68 aeroplanes “Samburo”
Magnaghi Aeronautica S.p.A. Sky Arrow 650 TC, 650 TCN, 650 TCNS and 710 RG
Korff Luftfahrt Taifun 17 E II
Pipistrel Virus SW 121,
S.C. Constructii Aeronautice IAR-46, IS-28M2/GR
Scheibe Aircraft GmbH SF 25 C, SF 36 R
Skyfox Aviation CA-25N
Sportavia Puetzer RF-9 ABS
Stemme AG S10-VT, ASP S15-1, TSA-M S6




TE.CAP.00110-006 © European Aviation Safety Agency. All rights reserved. ISO9001 Certified. Page 4 of 4
Proprietary document. Copies are not controlled. Confirm revision status through the EASA-Internet/Intranet.
An agency of the European Union

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