[Docket No. FAA-2016-2042; Directorate Identifier 2016-NE-02-AD] 

RIN 2120-AA64 

Airworthiness Directives; BRP-Powertrain GmbH & Co KG Reciprocating Engines 

AGENCY: Federal Aviation Administration (FAA), DOT. 

ACTION: Notice of proposed rolemaking (NPRM). 

SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain BRPPowertrain GmbH & Co KG Rotax 912 F2, 912 F3, 912 F4, 912 S2, 912 S3, 912 S4, 914 

F2, 914 F3, and 914 F4 reciprocating engines. This proposed AD was prompted by a 

design change introduced by the manufacturer that relocated the engine cylinder head 

temperature sensor to a different location and converted it to a coolant temperature 

sensor. This proposed AD would require re-identification of the engine model and 

concurrent modification of the aircraft to indicate the maximum coolant temperature 

limit. We are proposing this AD to prevent exceeding engine coolant temperature limits, 

which could result in loss of engine coolant, damage to the engine, and loss of control of 

the airplane. 

DATES: We must receive comments on this proposed AD by [INSERT DATE 60 

DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER]. 
New Jersey Avenue SE., West Building Ground Floor, Room W12-140, Washington, DC 

20590-0001. 

• Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., 

Monday through Friday, except Federal holidays. 

• Fax: 202-493-2251. 

For service information identified in this NPRM, contact BRP-Powertrain GmbH 

& Co KG, Rotaxstrasse 1, A-4623 Gunskirchen, Austria; Internet: 

http://www.FL YROTAX.com. You may view this service information at the FAA, 

Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA. For information 

on the availability of this material at the FAA, call 781-238-7125. 

Examining the AD Docket 

You may examine the AD docket on the Internet at http://www.regulations.gov by 

searching for and locating Docket No. FAA-2016-2042; or in person at the Docket 

Operations office between 9 a.m. and 5 p.m., Monday through Friday, except Federal 

holidays. The AD docket contains this proposed AD, the mandatory continuing 

airworthiness information (MCAI), the regulatory evaluation, any comments received, 

and other information. The address for the Docket Office (phone: 800-647-5527) is in the 

ADDRESSES section. Comments will be available in the AD docket shortly after receipt. 

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SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written relevant data, views, or arguments about this 

proposed AD. Send your comments to an address listed under the ADDRESSES section. 

Include "Docket No. FAA-2016-2042; Directorate Identifier 2016-NE-02-AD" at the 

beginning of your comments. We specifically invite comments on the overall regulatory, 

economic, environmental, and energy aspects of this proposed AD. We will consider all 

comments received by the closing date and may amend this proposed AD based on those 

comments. 

We will post all comments we receive, without change, to 

http://www.regulations.gov, including any personal information you provide. We will 

also post a report summarizing each substantive verbal contact with FAA personnel 

concerning this proposed AD. 

Discussion 

The European Aviation Safety Agency (EASA), which is the Technical Agent for 

the Member States of the European Community, has issued EASA AD 2015-0240, dated 

December 18,2015 (referred to hereinafter as "the MCAI"), to correct an unsafe 

condition for the specified products. The MCAI states: 

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(

) 

(

g

document) but was not identified by a change of the engine model 

designation or of the engine PIN but only through the cylinder 

head PIN and the position of the temperature sensor. 

Consequently, engines \Vith the new cylinder heads (installed 

during production or replaced in-service during mainteriance) may 

be installed on an aircraft without concurrent modification of that 

aircraft, instructions for which should be provided by the type 

certificate (TC) holder or the supplemental type certificate (STC) 

holder, as applicable. In this case, the coolant temperature with a 

maximum engine operating limit of 120 °C (valid for engines 

operated \Vith water diluted glycol coolant) is displayed on a CHT 

indicator \Vith a typical limit marking (red radial/range) of more 

than 120 "C. 

BRP-Powertrain GmbH & Co KG introduced a design change that relocated the 

engine cylinder head temperature sensor from the top of the cylinder to a new location 

and converted it to a coolant temperature sensor. The coolant temperature maximum 

engine operating limit is now less than the cylinder head temperature maximum operating 

limit. You may obtain further information by examining the MCAI in the AD docket on 

the Internet at http://www.regulations.gov by searching for and locating Docket No. 

FAA-2016-2042. 

Related Service Information under 1 CFR Part 51 

BRP-Powertrain GmbH & Co KG has issued Service Bulletin (SB) SB-912-

068/SB-914-049 (one document), dated Aprill6, 2015. The service information 

describes procedures for re-identification of the type plate for certain BRP-Powertrain 

GmbH & Co KG Rotax 912 and 914 engines. This service information is reasonably 

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approved for operation in the United States. Pursuant to our bilateral agreement with the 

European Community, EASA has notified us of the unsafe condition described in the 

MCAI and service information referenced above. We are proposing this AD because we 

evaluated all information provided by EASA and determined the unsafe condition exists 

and is likely to exist or develop on other products of the same type design. This proposed 

AD would require re-identification of the engine model and the concurrent modification 

of the aircraft to indicate maximum coolant temperature limit. Costs of Compliance 

We estimate that this proposed AD affects about 40 engines installed on aircraft 

ofU.S. registry. We also estimate that it would take about 5 hours per engine to inspect 

and re-identify the type plate. The average labor rate is $85 per hour. Based on these figures, we estimate the cost ofthis proposed AD on U.S. operators to be $17,000. 

Authority for This Rulemaking 

Title 49 of the United States Code specifies the FAA's authority to issue rules on 

aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. 

"Subtitle VII: Aviation Programs," describes in more detail the scope of the Agency's 

authority. 

We are issuing this rulemaking under the authority described in "Subtitle VII, 

Part A, Subpart III, Section 44701: General requirements." Under that section, Congress 

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identified in this rulemaking action. 

Regulatory Findings 

We determined that this proposed AD would not have federalism implications 

under Executive Order 13132. This proposed AD would not have a substantial direct 

effect on the States, on the relationship between the national Govermnent and the States, 

or on the distribution of power and responsibilities among the various levels of 

government. 

For the reasons discussed above, I certify this proposed regulation: 

(1) Is not a "significant regulatory action" under Executive Order 12866, 

(2) Is not a "significant rule" under the DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979), 

(3) Will not affect intrastate aviation in Alaska to the extent that it justifies 

making a regulatory distinction, and 

(4) Will not have a significant economic impact, positive or negative, on a 

substantial number of small entities under the criteria of the Regulatory Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. 

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1. The authority citation for part 39 continues to read as follows: 

Authority: 49 U.S. C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

2. The FAA amends § 39.13 by adding the following new airworthiness directive 

(AD): 

BRP-Powertrain GmbH & Co KG (formerly BRP-Rotax GmbH & Co KG, 

Bombardier-Rotax GmbH & Co. KG, and Bombardier-Rotax GmbH): Docket No. 

FAA-2016-2042; Directorate Identifier 2016-NE-02-AD. 

(a) Comments Due Date 

We must receive comments by [INSERT DATE 60 DAYS AFTER DATE OF 

PUBLICATION IN THE FEDERAL REGISTER]. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to BRP-Powertrain GmbH & Co KG Rotax mode1912 F2, 912 

F3, 912 F4, 912 S2, 912 S3, 912 S4, 914 F2, 914 F3, and 914 F4 reciprocating engines 

with a cylinder head that has a part number (PIN) listed in Figure 1 to paragraph (c) of 

this AD and that is installed in position 2 or 3. 

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(d) Reason 

This AD was prompted by a design change introduced by the manufacturer that 

relocated the engine cylinder head temperature sensor to a new location and converted it 

to a coolant temperature sensor. We are issuing this AD to prevent exceeding coolant 

temperature limits, which could result in loss of engine coolant, damage to the engine, 

and loss of control of the airplane. 

(e) Actions and Compliance 

Comply with this AD within 6 months after the effective date of this AD, unless 

already done. 

(1) For engines with cylinder heads that have a PIN listed in Figure 1 to paragraph 

(c) of this AD installed on both position 2 and position 3, change the engine model 

designation on the engine type data plate to include a "-0 1" suffix. Use paragraph 3 .1.1 of 

BRP-Powertrain Service Bulletin (SB) SB-912-068/SB-914-049, dated Apri116, 2015, to 

make this change. 

(2) For engines with only one cylinder head having a PIN listed in Figure 1 to 

paragraph (c) of this AD installed in position 2 or 3, do one of the following: 

(i) Replace the cylinder heads having PINs listed in Figure J to paragraph (c) of 

this AD with a PIN 623682 cylinder head on Rotax 912 F2, 912 F3, 912 F4, 914 F2, 

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of this AD on both cylinder head positions 2 and 3 and change the engine model 

designation of the engine type data plate in accordance with paragraph (e )(1) of this AD. 

(3) For engines re-identified in accordance with paragraph (e)(!) or ( e)(2)(ii) of 

this AD, before further flight, modify the aircraft cockpit instrumentation and related 

documentation to indicate a maximum coolant temperature limit of 120 degrees Celsius 

using FAA-approved procedures. These re-identified engines remain eligible for 

installation on approved aircraft-engine combinations. 

(I) Alternative Methods of Compliance (AMOCs) 

The Manager, Engine Certification Office, FAA, may approve AMOCs for this 

AD. Use the procedures found in 14 CFR 39.19 to make your request. You may email 

your request to: ANE-AD-AMOC@faa.gov. 

(g) Related Information 

(1) For more information about this AD, contact Robert Green, Aerospace 

Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 

District Avenue, Burlington, MA 01803; phone: 781-238-7754; fax: 781-238-7199; 

email: robert.green@faa.gov. 

(2) For more information about the installation modifications described in 

paragraph (e)(3) of this AD, contact Jim Rutherford, Aerospace Engineer, FAA, Small 

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docket on the Internet at http://\VWW.regulations.gov by searching for and locating it in 

Docket No. F AA-2016-2042. 

(4) BRF-Powertrain GmbH & Co KG Service Bulletin (SB) SB-912-068/SB-914-

049 (one document), dated April16, 2015, can be obtained from BRP-Powertrain GmbH 

& Co KG, using the contact information in paragraph (g)(6) of this proposed AD. 

(5) The following aircraft service information contains FAA-approved procedures 

for complying with paragraph (e)(3) of this AD and can be obtained from BRFPowertrain GmbH & Co. KG, using the contact information in paragraph (g)(6) of this 

proposed AD: 

Figure 2 to Paragraph (g) ofthis AD- Aircraft Type/Model and Service 

Information 

Type I Mode1(s) SB 

AquilaAT01 SB-AT01-029 

TECNAM P92, P2002 and P2006T SB-183-CS 

TECNAM P2008 JC SB-185-CS 

Diamond H 36 "Dimona" and HK 36 "Super Dimona' OSB 36-111 

Diamond DV 20 "Katana" OSB 20-066 

Diamond (Canada) DA20-A1 "Katana" SB Da20-72-04 M&D AVO 68 "Samburo" TM 808-31 

Scheibe SF 25 C and SF 36 R SI 02-14 

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(7) You may view this service infonnation at the FAA, Engine & Propeller 

Directorate, 1200 District Avenue, Burlington, MA For information on the availability of 

this material at the FAA, call 781-238-7125. 

Issued in Burlington, Massachusetts, on March 11, 2016. 

Colleen M. D' Alessandro, 

Manager, Engine & Propeller Directorate, 

Aircraft Certification Service. 

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