60570 Federal Register / Vol. 88, No. 170 / Tuesday, September 5, 2023 / Rules and Regulations 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7230, Turbine Engine Compressor 

Section. 

(e) Unsafe Condition 

This AD was prompted by reports of 

malformed scallop edge geometry and surface 

conditions at the front flange scallops of 

affected low-pressure compressor (LPC) 

booster rotors. The FAA is issuing this AD to 

prevent failure of the LPC booster rotor. The 

unsafe condition, if not addressed, could 

result in release of high-energy debris, with 

consequent engine in-flight shutdown, and 

reduced control of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Except as specified in paragraphs (h) and 

(i) of this AD: Perform all required actions 

within the compliance times specified in, 

and in accordance with, European Union 

Aviation Safety Agency (EASA) AD 2023– 

0152, dated July 25, 2023 (EASA AD 2023– 

0152). 

(h) Exceptions to EASA AD 2023–0152 

(1) Where EASA AD 2023–0152 requires 

compliance from its effective date, this AD 

requires using the effective date of this AD. 

(2) This AD does not adopt the compliance 

times specified for the initial fluorescent 

penetrant inspection (FPI) in paragraph (1) 

and Table 1 of EASA AD 2023–0152. Instead, 

this AD requires the initial FPI within 150 

engine flight cycles after the effective date of 

this AD. 

(3) Where paragraph (1) of EASA AD 2023– 

0152 specifies ‘‘in accordance with the 

instructions of EM task 72–38–12–200–801’’ 

this AD requires replacing those words with 

‘‘in accordance with the instructions of EM 

task 72–38–18–200–801 or equivalent FAA 

approved procedures.’’ 

(4) Where paragraphs (2) and (3) of EASA 

AD 2023–0152 specify to contact RRD for 

approved corrective action(s) and accomplish 

those actions accordingly, this AD requires 

replacement of the LPC booster rotor. In lieu 

of replacement of the affected LPC booster 

rotor, operators may repair the affected LPC 

booster rotor using a method approved by the 

Manager, International Validation Branch, 

FAA; or EASA; or RRD’s EASA Design 

Organization Approval (DOA). If approved by 

the DOA, the approval must include the 

DOA-authorized signature. 

(5) Where the service information 

referenced in EASA AD 2023–0152 specifies 

to reject the engine if a crack is found, this 

AD requires replacement or repair of the LPC 

booster rotor. 

(6) This AD does not adopt the Remarks 

paragraph of EASA AD 2023–0152. 

(i) Reporting Requirement 

Although the service information 

referenced in EASA AD 2023–0152 specifies 

to submit the Accomplishment Forms, Parts 

A and B, to the manufacturer, this AD does 

not include that requirement. If operators 

elect to perform the optional terminating 

action specified in Part C of the service 

information referenced in EASA AD 2023– 

0152, this AD requires submission of the Part 

C Accomplishment Form and photographic 

information to the manufacturer. 

(j) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, AIR–520 Continued 

Operational Safety Branch, FAA, has the 

authority to approve AMOCs for this AD, if 

requested using the procedures found in 14 

CFR 39.19. In accordance with 14 CFR 39.19, 

send your request to your principal inspector 

or local Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the International Validation 

Branch, send it to the attention of the person 

identified in paragraph (k) of this AD and 

email to: ANE-AD-AMOC@faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(k) Additional Information 

For more information about this AD, 

contact Sungmo Cho, Aviation Safety 

Engineer, FAA, 2200 South 216th Street, Des 

Moines, WA 98198; phone: (781) 238–7241; 

email: sungmo.d.cho@faa.gov. 

(l) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless the AD specifies otherwise. 

(i) European Union Aviation Safety Agency 

AD 2023–0152, dated July 25, 2023. 

(ii) [Reserved] 

(3) For EASA AD 2022–0252, contact 

EASA, Konrad-Adenauer-Ufer 3, 50668 

Cologne, Germany; phone: +49 221 8999 000; 

email: ADs@easa.europa.eu. You may find 

EASA AD 2022–0252 on the EASA website 

at ad.easa.europa.eu. 

(4) You may view this service information 

at the FAA, Airworthiness Products Section, 

Operational Safety Branch, 1200 District 

Avenue, Burlington, MA 01803. For 

information on the availability of this 

material at the FAA, call (817) 222–5110. 

(5) You may view this service information 

that is incorporated by reference at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, 

email: fr.inspection@nara.gov, or go to: 

www.archives.gov/federal-register/cfr/ibrlocations.html. 

Issued on August 25, 2023. 

Victor Wicklund, 

Deputy Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2023–19164 Filed 8–31–23; 4:15 pm] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–1809; Project 

Identifier MCAI–2023–00945–E; Amendment 

39–22539; AD 2023–17–13] 

RIN 2120–AA64 

Airworthiness Directives; BRP-Rotax 

GmbH & Co KG (Formerly BRP– 

POWERTRAIN GMBH & CO KG and 

Bombardier-Rotax GmbH) Engines and 

Various Aircraft 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule; request for 

comments. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for all BRPRotax GmbH & Co KG (Rotax) Model 

912 F2, 912 F3, 912 F4, 912 iSc2 Sport, 

912 iSc3 Sport, 912 S2, 912 S3, 912 S4, 

914 F2, 914 F3, and 914 F4 engines; and 

Model 912 A, 912 A2, and 912 A3 

engines included as part of the type 

certificated aircraft type design for 

various aircraft. This AD was prompted 

by a report of surface abnormalities on 

the affected propeller shaft, which could 

lead to increased wear of the propeller 

shaft bearings. This AD requires initial 

and repetitive inspections of the 

magnetic plug for the accumulation of 

metal chips to assess the condition of 

the propeller gearbox for wear of the 

propeller shaft bearings and removal of 

the affected propeller shaft from service 

and replacement with a part eligible for 

installation as a terminating action 

either immediately or at a certain time 

depending on inspection findings. This 

AD also prohibits installation of the 

affected propeller shaft on any engine. 

The FAA is issuing this AD to address 

the unsafe condition on these products. 

DATES: This AD is effective September 

20, 2023. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of September 20, 2023. 

The FAA must receive comments on 

this AD by October 20, 2023. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, by any of the following 

methods: 

• Federal eRulemaking Portal: Go to 

regulations.gov. Follow the instructions 

for submitting comments. 

• Fax: (202) 493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 


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W12–140, 1200 New Jersey Avenue SE, 

Washington, DC 20590. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2023–1809; or in person at 

Docket Operations between 9 a.m. and 

5 p.m., Monday through Friday, except 

Federal holidays. The AD docket 

contains this final rule, the mandatory 

continuing airworthiness information 

(MCAI), any comments received, and 

other information. The street address for 

Docket Operations is listed above. 

Material Incorporated by Reference: 

• For service information identified 

in this final rule, contact BRP-Rotax 

GmbH & Co KG, Rotaxstrasse 1, A–4623 

Gunskirchen, Austria; phone: +43 7246 

601 0; website: flyrotax.com. 

• You may view this service 

information at the FAA Airworthiness 

Products Section, Operational Safety 

Branch, 1200 District Avenue, 

Burlington, MA 01803. For information 

on the availability of this material at the 

FAA, call (817) 222–5110. It is also 

available at regulations.gov under 

Docket No. FAA–2023–1809. 

FOR FURTHER INFORMATION CONTACT: 

Barbara Caufield, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; phone: 

(781) 238–7146; email: 

barbara.caufield@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

The FAA invites you to send any 

written data, views, or arguments about 

this final rule. Send your comments to 

an address listed under ADDRESSES. 

Include ‘‘Docket No. FAA–2023–1809; 

Project Identifier MCAI–2023–00945–E’’ 

at the beginning of your comments. The 

most helpful comments reference a 

specific portion of the final rule, explain 

the reason for any recommended 

change, and include supporting data. 

The FAA will consider all comments 

received by the closing date and may 

amend this final rule because of those 

comments. 

Except for Confidential Business 

Information (CBI) as described in the 

following paragraph, and other 

information as described in 14 CFR 

11.35, the FAA will post all comments 

received, without change, to 

regulations.gov, including any personal 

information you provide. The agency 

will also post a report summarizing each 

substantive verbal contact received 

about this final rule. 

Confidential Business Information 

CBI is commercial or financial 

information that is both customarily and 

actually treated as private by its owner. 

Under the Freedom of Information Act 

(FOIA) (5 U.S.C. 552), CBI is exempt 

from public disclosure. If your 

comments responsive to this AD contain 

commercial or financial information 

that is customarily treated as private, 

that you actually treat as private, and 

that is relevant or responsive to this AD, 

it is important that you clearly designate 

the submitted comments as CBI. Please 

mark each page of your submission 

containing CBI as ‘‘PROPIN.’’ The FAA 

will treat such marked submissions as 

confidential under the FOIA, and they 

will not be placed in the public docket 

of this AD. Submissions containing CBI 

should be sent to Barbara Caufield, 

Aviation Safety Engineer, FAA, 1600 

Stewart Avenue, Suite 410, Westbury, 

NY 11590. Any commentary that the 

FAA receives which is not specifically 

designated as CBI will be placed in the 

public docket for this rulemaking. 

Background 

The European Union Aviation Safety 

Agency (EASA), which is the Technical 

Agent for the Member States of the 

European Union, has issued EASA 

Emergency AD 2023–0156–E, dated 

August 2, 2023 (referred to after this as 

the MCAI), to address an unsafe 

condition on Rotax 912 A, 912 F, 912 S 

and 912 iSc Sport (series) engines, all 

models, all serial numbers; and Rotax 

914 F (series) engines, all models, all 

serial numbers. The MCAI states that 

the manufacturer reported an 

occurrence of surface abnormalities on 

certain propeller shafts. Further 

investigation by the manufacturer 

revealed that this abnormality was 

caused by a deviation in the machining 

process. The manufacturer determined 

on which engines the affected propeller 

shafts were initially installed and that 

several of the affected propeller shafts 

were delivered as spare parts. The 

manufacturer published service 

information that identifies the affected 

propeller shafts and specifies 

instructions for inspection and 

replacement of the propeller shaft. This 

condition, if not addressed, could lead 

to increased wear of the propeller shaft 

bearings, which could lead to failure of 

the propeller shaft bearings, propeller 

shaft, and engine. This could result in 

engine in-flight shutdown, and (for a 

single-engine airplane) consequent 

emergency landing or loss of control of 

the airplane. 

You may examine the MCAI in the 

AD docket at regulations.gov under 

Docket No. FAA–2023–1809. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed Rotax Service 

Bulletin (SB) SB–912–078/SB–914–059/ 

SB–912 i-014, dated July 25, 2023 

(published as a single document). This 

service information identifies the serial 

numbers of the affected engines and 

spare parts and specifies procedures for 

inspecting the magnetic plug and 

replacing the propeller shaft with a part 

eligible for installation. 

The FAA also reviewed Rotax SB SB– 

912–078UL/SB–914–059UL/SB–912 i014iS, dated July 25, 2023 (published as 

a single document). This service 

information identifies the serial 

numbers of the affected engines and 

spare parts. 

These documents are distinct since 

they apply to different engine models. 

This service information is reasonably 

available because the interested parties 

have access to it through their normal 

course of business or by the means 

identified in ADDRESSES. 

FAA’s Determination 

These products have been approved 

by the aviation authority of another 

country and are approved for operation 

in the United States. Pursuant to the 

FAA’s bilateral agreement with this 

State of Design Authority, it has notified 

the FAA of the unsafe condition 

described in the MCAI and service 

information referenced above. The FAA 

is issuing this AD after determining that 

the unsafe condition described 

previously is likely to exist or develop 

on other products of the same type 

design. 

AD Requirements 

This AD requires initial and repetitive 

inspections of the magnetic plug for the 

accumulation of metal chips to assess 

the condition of the propeller gearbox 

for wear of the propeller shaft bearings 

and removal of the affected propeller 

shaft from service and replacing it with 

a part eligible for installation as a 

terminating action either immediately or 

at a certain time depending on 

inspection findings. This AD also 

prohibits the installation of the affected 

propeller shaft on any engine. 

Differences Between This AD and the 

MCAI 

The MCAI applies to all Rotax 912 A, 

912 F, 912 S and 912 iSc Sport (series) 

engines, all models, all serial numbers; 

and Rotax 914 F (series) engines, all 

models, all serial numbers. Rotax Model 


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912 A, 912 A2, and 912 A3 engines are 

not type certificated in the United States 

but are part of the type design for 

certain aircraft. This AD applies to all 

Rotax Model 912 F2, 912 F3, 912 F4, 

912 iSc2 Sport, 912 iSc3 Sport, 912 S2, 

912 S3, 912 S4, 914 F2, 914 F3, and 914 

F4 engines; and Model 912 A, 912 A2, 

and 912 A3 engines included as part of 

the type design for Aeromot-Indu ́ stria 

Mecaˆnico-Metalu ́rgica Ltda Model 

AMT–200 (Super Ximango); Diamond 

Aircraft Industries Model HK 36 R 

‘‘SUPER DIMONA’’; Diamond Aircraft 

Industries GmbH Models HK 36 TC and 

HK 36 TS; Diamond Aircraft Industries 

Inc. Model DA20–A1; HOAC-Austria 

Model DV 20 KATANA; Magnaghi 

Aeronautica S.p.A Model Sky Arrow 

650 TC; and SCHEIBE-Flugzeugbau 

GmbH Model SF 25C aircraft, as 

applicable. 

Justification for Immediate Adoption 

and Determination of the Effective Date 

Section 553(b)(3)(B) of the 

Administrative Procedure Act (APA) (5 

U.S.C. 551 et seq.) authorizes agencies 

to dispense with notice and comment 

procedures for rules when the agency, 

for ‘‘good cause,’’ finds that those 

procedures are ‘‘impracticable, 

unnecessary, or contrary to the public 

interest.’’ Under this section, an agency, 

upon finding good cause, may issue a 

final rule without providing notice and 

seeking comment prior to issuance. 

Further, section 553(d) of the APA 

authorizes agencies to make rules 

effective in less than thirty days, upon 

a finding of good cause. 

An unsafe condition exists that 

requires the immediate adoption of this 

AD without providing an opportunity 

for public comments prior to adoption. 

The FAA has found that the risk to the 

flying public justifies forgoing notice 

and comment prior to adoption of this 

rule because the presence of material 

anomalies on the propeller shaft could 

lead to wear of the propeller shaft 

bearings, which could lead to failure of 

the propeller shaft bearings, propeller 

shaft, and engine, which could result in 

engine in-flight shutdown, and (for a 

single-engine airplane) consequent 

emergency landing or loss of control of 

the airplane. Since this condition 

happens rapidly and without warning, 

the initial inspection must be done 

before further flight with repetitive 

inspections done every 10 flight hours 

(FHs) with terminating replacement 

before further flight if wear of the 

propeller shaft bearings is found or 50 

FHs if no wear is found. These 

compliance times are shorter than the 

time necessary for the public to 

comment and for publication of the final 

rule. 

Accordingly, notice and opportunity 

for prior public comment are 

impracticable and contrary to the public 

interest pursuant to 5 U.S.C. 

553(b)(3)(B). 

In addition, the FAA finds that good 

cause exists pursuant to 5 U.S.C. 553(d) 

for making this amendment effective in 

less than 30 days, for the same reasons 

the FAA found good cause to forgo 

notice and comment. 

Regulatory Flexibility Act 

The requirements of the Regulatory 

Flexibility Act (RFA) do not apply when 

an agency finds good cause pursuant to 

5 U.S.C. 553 to adopt a rule without 

prior notice and comment. Because the 

FAA has determined that it has good 

cause to adopt this rule without prior 

notice and comment, RFA analysis is 

not required. 

Costs of Compliance 

The FAA estimates that this AD 

affects 287 engines installed on aircraft 

of U.S. registry. 

The FAA estimates the following 

costs to comply with this AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Inspection ..................................... 1 work-hour × $85 per hour = $85 ................................... $0 $85 $24,395 

Replace propeller shaft ................ 3 work-hours × $85 per hour = $255 ............................... 1,437 1,692 485,604 

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. 

The FAA is issuing this rulemaking 

under the authority described in 

Subtitle VII, Part A, Subpart III, Section 

44701: General requirements. Under 

that section, Congress charges the FAA 

with promoting safe flight of civil 

aircraft in air commerce by prescribing 

regulations for practices, methods, and 

procedures the Administrator finds 

necessary for safety in air commerce. 

This regulation is within the scope of 

that authority because it addresses an 

unsafe condition that is likely to exist or 

develop on products identified in this 

rulemaking action. 

Regulatory Findings 

This AD will not have federalism 

implications under Executive Order 

13132. This AD will not have a 

substantial direct effect on the States, on 

the relationship between the national 

government and the States, or on the 

distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify that this AD: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

and 

(2) Will not affect intrastate aviation 

in Alaska. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA amends 14 CFR part 39 as 

follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 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: 

2023–17–13 BRP-Rotax GmbH & Co KG 

(formerly BRP–POWERTRAIN GMBH & 

CO KG and Bombardier-Rotax GmbH) 

and Various Aircraft: Amendment 39– 

22539; Docket No. FAA–2023–1809; 

Project Identifier MCAI–2023–00945–E. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective September 20, 2023. 

(b) Affected ADs 

None. 


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(c) Applicability 

This AD applies to BRP-Rotax GmbH & Co 

KG (formerly BRP–POWERTRAIN GMBH & 

CO KG and Bombardier-Rotax GmbH) (Rotax) 

Model 912 F2, 912 F3, 912 F4, 912 iSc2 

Sport, 912 iSc3 Sport, 912 S2, 912 S3, 912 

S4, 914 F2, 914 F3, and 914 F4 engines; and 

Model 912 A, 912 A2, and 912 A3 engines 

installed on the aircraft identified in Table 1 

to paragraph (c) of this AD that were 

included as part of the aircraft’s type 

certification basis; with a propeller shaft 

having part number (P/N) 937047 and 

meeting at least one of the criteria of 

paragraphs (c)(1) or (2) of this AD. 

TABLE 1 TO PARAGRAPH (c)—AIRPLANES WITH AFFECTED ENGINES

Type certificate holder Aircraft model Engine model 

Aeromot-Industria Mecanico-Metalurgica Ltda ...................... AMT–200 (Super Ximango) .................................................. 912 A2. 

Diamond Aircraft Industries .................................................... HK 36 R ‘‘SUPER DIMONA’’ ............................................... 912 A. 

Diamond Aircraft Industries GmbH ........................................ HK 36 TC & HK 36 TS ......................................................... 912 A3. 

Diamond Aircraft Industries Inc. ............................................. DA20–A1 .............................................................................. 912 A3. 

HOAC-Austria ......................................................................... DV 20 KATANA .................................................................... 912 A3. 

Magnaghi Aeronautica S.p.A ................................................. Sky Arrow 650 TC ................................................................ 912 A2. 

SCHEIBE–AIRCRAFT–GMBH ............................................... SF 25C ................................................................................. 912 A2 or 912 A3. 

(1) Installed initially (on delivery) on 

engines having a serial number identified in 

paragraph 1.1) Applicability, Criterion A) 

Engine Serial number, of Rotax Service 

Bulletin (SB) SB–912–078/SB–914–059/SB– 

912 i–014, dated July 25, 2023 (published as 

a single document) (Rotax SB SB–912–078/ 

SB–914–059/SB–912 i–014); or paragraph 

1.1) Applicability, Criterion A) Engine Serial 

number, of Rotax SB SB–912–078UL/SB– 

914–059UL/SB–912 i–014iS, dated July 25, 

2023 (published as a single document) (SB– 

912–078UL/SB–914–059UL/SB–912 i– 

014iS); or 

(2) Delivered as a spare part and having a 

serial number identified in paragraph 1.1) 

Applicability, Criterion B) Spare parts, of 

Rotax SB SB–912–078/SB–914–059/SB–912 

i–014; or paragraph 1.1) Applicability, 

Criterion B) Spare parts, of Rotax SB SB– 

912–078UL/SB–914–059UL/SB–912 i-014iS. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 8510, Reciprocating Engine Front 

Section. 

(e) Unsafe Condition 

This AD was prompted by a report of 

surface abnormalities on the affected 

propeller shaft, which could lead to 

increased wear of the propeller shaft 

bearings. The FAA is issuing this AD to 

prevent failure of the propeller shaft 

bearings. The unsafe condition, if not 

addressed, could result in failure of the 

propeller shaft, failure of the engine, engine 

in-flight shutdown, and (for a single-engine 

airplane) consequent emergency landing of 

the airplane or loss of control of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

(1) Before further flight after the effective 

date of this AD and thereafter at intervals not 

to exceed 10 flight hours (FHs), inspect the 

magnetic plug on the crankcase for the 

accumulation of metal chips. If the 

accumulation of metal chips is 3mm or 

greater, before further flight, remove the 

affected propeller shaft from service and 

replace with a part eligible for installation. 

(2) Before exceeding 50 FHs since engine 

first operation or since first installation of the 

affected propeller shaft on an engine, as 

applicable; or within 10 days after the 

effective date of this AD, whichever occurs 

later; remove the affected propeller shaft 

from service and replace with a part eligible 

for installation. 

(3) Replacement of the affected propeller 

shaft with a part eligible for installation 

constitutes terminating action for any 

inspection required by paragraph (g)(1) of 

this AD. 

(h) Installation Prohibition 

After the effective date of this AD, do not 

install a propeller shaft having P/N 937047 

on any engine. 

(i) No Return of Parts 

Where Rotax SB SB–912–078/SB–914–059/ 

SB–912 i-014 specifies returning certain parts 

to the manufacturer, this AD does not 

include that requirement. 

(j) Definition 

For the purpose of this AD, a ‘‘part eligible 

for installation’’ is any propeller shaft that 

does not have P/N 937047. 

(k) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, International Validation 

Branch, FAA, has the authority to approve 

AMOCs for this AD, if requested using the 

procedures found in 14 CFR 39.19. In 

accordance with 14 CFR 39.19, send your 

request to your principal inspector or local 

Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the International Validation 

Branch, send it to the attention of the person 

identified in paragraph (l)(2) of this AD and 

email to ANE-AD-AMOC@faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(l) Additional Information 

(1) Refer to European Union Aviation 

Safety Agency (EASA) Emergency AD 2023– 

0156–E, dated August 2, 2023, for related 

information. This EASA Emergency AD may 

be found in the AD docket at regulations.gov 

under Docket No. FAA–2023–1809. 

(2) For more information about this AD, 

contact Barbara Caufield, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; phone: (781) 238– 

7146; email: barbara.caufield@faa.gov. 

(m) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless the AD specifies otherwise. 

(i) BRP-Rotax GmbH & Co KG Service 

Bulletin SB–912–078/SB–914–059/SB–912 i– 

014, dated July 25, 2023 (published as a 

single document). 

(ii) BRP-Rotax GmbH & Co KG Service 

Bulletin SB–912–078UL/SB–914–059UL/SB– 

912 i–014iS, dated July 25, 2023 (published 

as a single document). 

(3) For service information identified in 

this AD, contact BRP-Rotax GmbH & Co KG, 

Rotaxstrasse 1, A–4623 Gunskirchen, Austria; 

phone: +43 7246 601 0; website: 

flyrotax.com. 

(4) You may view this service information 

at the FAA Airworthiness Products Section, 

Operational Safety Branch, 1200 District 

Avenue, Burlington, MA 01803. For 

information on the availability of this 

material at the FAA, call (817) 222–5110. 

(5) You may view this service information 

that is incorporated by reference at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, 

email: fr.inspection@nara.gov, or go to: 

www.archives.gov/federal-register/cfr/ibrlocations.html. 

Issued on August 25, 2023. 

Victor Wicklund, 

Deputy Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2023–19162 Filed 8–31–23; 4:15 pm] 

BILLING CODE 4910–13–P 


ddrumheller on DSK120RN23PROD with RULES1