2354 Federal Register / Vol. 83, No. 11 / Wednesday, January 17, 2018 / Rules and Regulations 

Reorganization Act of 1974, secs. 201, 202, 

206, 211 (42 U.S.C. 5841, 5842, 5846, 5851); 

Nuclear Waste Policy Act of 1982, sec. 306 

(42 U.S.C. 10226); National Environmental 

Policy Act of 1969 (42 U.S.C. 4332); 44 U.S.C. 

3504 note; Sec. 109, Pub. L. 96–295, 94 Stat. 

783. 

■ 2. In § 50.55a, revise paragraphs 

(a)(3)(i) through (iii) to read as follows: 

§ 50.55a Codes and standards. 

(a) * * * 

(3) * * * 

(i) NRC Regulatory Guide 1.84, 

Revision 37. NRC Regulatory Guide 

1.84, Revision 37, ‘‘Design, Fabrication, 

and Materials Code Case Acceptability, 

ASME Section III,’’ dated March 2017, 

with the requirements in paragraph 

(b)(4) of this section. 

(ii) NRC Regulatory Guide 1.147, 

Revision 18. NRC Regulatory Guide 

1.147, Revision 18, ‘‘Inservice 

Inspection Code Case Acceptability, 

ASME Section XI, Division 1,’’ dated 

March 2017, which lists ASME Code 

Cases that the NRC has approved in 

accordance with the requirements in 

paragraph (b)(5) of this section. 

(iii) NRC Regulatory Guide 1.192, 

Revision 2. NRC Regulatory Guide 

1.192, Revision 2, ‘‘Operation and 

Maintenance Code Case Acceptability, 

ASME OM Code,’’ dated March 2017, 

which lists ASME Code Cases that the 

NRC has approved in accordance with 

the requirements in paragraph (b)(6) of 

this section. 

* * * * * 

Dated at Rockville, Maryland, this 2nd day 

of August 2017. 

For the Nuclear Regulatory Commission. 

Brian E. Holian, 

Acting Director, Office of Nuclear Reactor 

Regulation. 

Editorial note: This document was 

received for publication by the Office of the 

Federal Register on January 3, 2018. 

[FR Doc. 2018–00112 Filed 1–16–18; 8:45 am] 

BILLING CODE P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2017–0324; Product 

Identifier 2017–CE–004–AD; Amendment 

39–19157; AD 2018–02–04] 

RIN 2120–AA64 

Airworthiness Directives; Aerospace 

Welding Minneapolis, Inc., Mufflers 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Aerospace Welding Minneapolis, Inc. 

mufflers, part numbers A1754001–23 

and A1754001–25, installed on 

airplanes. This AD was prompted by 

occurrences of cracks or broken welds 

in the connecting weld of the muffler 

body to muffler cuff that may allow 

carbon monoxide exhaust fumes into 

the cockpit heating system. This AD 

requires an inspection of the muffler for 

leaking to identify cracks and 

replacement of the muffler. We are 

issuing this AD to address the unsafe 

condition on these products. 

DATES: This AD is effective February 21, 

2018. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of February 21, 2018. 

ADDRESSES: For service information 

identified in this final rule, contact 

Aerospace Welding Minneapolis, Inc. 

(AWI) 1045 Gemini Road, Eagan, 

Minnesota 55121; telephone: 651–379– 

9888; fax: 651–379–9889; internet: 

www.awi-ami.com. You may view this 

service information at the FAA, Policy 

and Innovation Division, 901 Locust, 

Kansas City, Missouri 64106. For 

information on the availability of this 

material at the FAA, call (816) 329– 

4148. It is also available on the internet 

at http://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2017–0324. 

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–2017– 

0324; 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 regulatory evaluation, any 

comments received, and other 

information. The address for Docket 

Operations (phone: 800–647–5527) is 

Docket Operations, U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE, 

Washington, DC 20590. 

FOR FURTHER INFORMATION CONTACT: 

Mark Grace, Aerospace Engineer, FAA, 

Chicago ACO Branch, 2300 East Devon 

Avenue, Des Plaines, IL 60018–4696; 

telephone: (847) 294–7377; fax: (847) 

294–7834; email: mark.grace@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to certain Aerospace Welding 

Minneapolis, Inc. (AWI) mufflers, part 

numbers A1754001–23 and A1754001– 

25, installed on airplanes. The NPRM 

published in the Federal Register on 

April 18, 2017 (82 FR 18265). The 

NPRM was prompted by reports of 

broken or cracked welds in the 

connecting weld of the muffler body to 

muffler cuff. There have been 54 

occurrences identified by maintenance 

and 2 occurrences identified by the 

carbon monoxide (CO) gas monitor 

warning system. The NPRM proposed to 

require an inspection of the muffler for 

leaking to identify cracks and 

replacement of the muffler. We are 

issuing this AD to correct the unsafe 

condition on these products. 

Comments 

We gave the public the opportunity to 

participate in developing this final rule. 

The following presents the comments 

received on the NPRM and the FAA’s 

response to each comment. 

Request To Expand the Applicability 

An anonymous commenter requested 

we expand the applicability of the AD 

to include additional part number 

mufflers produced by the same 

manufacturer as the mufflers affected by 

this AD. The commenter thinks the 

additional part number mufflers may 

share some of the same materials, 

processes, and methods of assembly as 

the mufflers affected by this AD. 

We do not agree with this comment. 

We addressed this concern during the 

investigation of the unsafe condition. 

We found that the unsafe condition is 

related to a design change and was 

applicable to one manufacturing lot. 

The unsafe condition applies to only the 

part numbers and serial numbers 

affected by this AD. 

We have not changed this AD based 

on this comment. 

Request To Prohibit the Installation of 

the Affected Muffler on Cessna 172R 

and 172S Airplanes 

An anonymous commenter pointed 

out that that all 10 SDRs address the 

Models 172R and 172S airplanes. This 

commenter also asks how many of the 

56 parts were installed on Cessna 

Models C172R and C172S airplanes. 

The commenter explains that (AWI) 

mufflers, part numbers A1754001–23 

and A1754001–25, lack the reinforced 

ends and high temperature corrosion 

resistant material specified in FAR Part 

23.1125(a)(1). The material substitution 


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Federal Register / Vol. 83, No. 11 / Wednesday, January 17, 2018 / Rules and Regulations 2355 

makes it less resistant to high 

temperature and corrosion than the 

original type-certificated product. Based 

on the comments, the FAA infers that 

the commenter wants the AD to prohibit 

the installation of the affected parts, 

regardless of serial number, specifically 

on the Cessna Models 172R and 172S 

airplanes. 

We do not agree with the implication 

that the installation prohibition should 

apply to all produced parts or only 

apply to the Cessna Model 172R and 

172S airplanes. The unsafe condition 

resulted from a design change with a 

limited serial number effectivity and 

that is approved for installation on other 

models. We don’t know how many parts 

are installed or could be installed in the 

future on the Cessna Models C172R and 

C172S airplanes. The current 

applicability captures all the potentially 

unsafe parts in the field. Concerns about 

material substitutions complying with 

14 CFR 23.1125(a)(1) goes beyond the 

scope of this AD. 

We have not changed this AD based 

on this comment. 

Request We Add an Exhaust Systems 

Inspection 

An anonymous commenter requested 

we issue an AD similar to a Transport 

Canada AD which requires an ongoing 

periodic pressure testing of the exhaust 

systems to help identify and reduce the 

risk of CO entering the cabin area. 

We do not agree with this comment. 

This AD addresses the identified unsafe 

condition on the affected mufflers by 

requiring removal of the affected 

mufflers from airplanes. A more general 

pressure testing of exhaust systems is 

beyond the scope of this AD. 

We have not changed this AD based 

on this comment. 

Request To Make Spot Weld Procedures 

More Rigid 

An anonymous commenter requested 

we require parts manufacturer approval 

(PMA) spot weld procedures to be more 

rigid. The commenter stated that 

manually operated spot welding 

machines do not consistently control 

pressure, time, or frequency as required 

by weld schedules because the human 

operator controls those factors. It is 

almost impossible to meet the weld 

code without a computer aided 

machine. 

We do not agree with this comment. 

Regulating how spot welds are done 

goes beyond the scope of this AD. This 

AD addresses the identified unsafe 

condition on the affected mufflers by 

requiring removal of the affected 

mufflers from airplanes. 

We have not changed this AD based 

on this comment. 

Request We Prohibit the Use of Less 

Heat Resistant Material 

An anonymous commenter requested 

we not allow the substitution of less 

heat resistant material for higher heat 

resistant material. There are a number of 

FAA-approved PMA articles in 

existence certified by Identicality or 

Test and Computation where less heat 

resistant materials have been 

substituted. In many cases these PMA 

articles are used as terminating action to 

ADs and undermine the basis of the AD. 

We do not agree with this comment. 

An applicant for a PMA must 

demonstrate compliance with the 

applicable regulations before the PMA is 

granted. This AD addresses the unsafe 

condition on the affected mufflers by 

requiring removal of the affected 

mufflers from airplanes. Changing the 

PMA process goes beyond the scope of 

this AD. 

We have not changed this AD based 

on this comment. 

Request We Make Related Documents 

Available 

David McGhee requested we ensure 

documents related to the AD are readily 

available. Although requested several 

times by telephone and email, the 

commenter was unable to obtain a copy 

of related service information. This 

made review and comment on the 

proposed AD difficult. 

We agree with this comment. Related 

documents should be available for a 

timely review of the AD. The NPRM 

incorrectly cited the related AWI service 

bulletin as AWI Mandatory Service 

Bulletin No. 16063001, dated June 30, 

2015. The correct citation should read 

AWI Mandatory Service Bulletin No. 

15063001, dated June 30, 2015. We 

confirmed the availability of the related 

service bulletin with the document 

provider and confirmed the commenter 

received a copy prior to the close of the 

comment period. 

We changed this AD to use the correct 

citation based on this comment. 

Request a Change to the Cost of 

Compliance 

David McGhee requested we add the 

cost to determine if the affected muffler 

is installed on the airplane to the 

estimated cost of the AD. The related 

service information estimated it would 

take 1 hour of labor to inspect the 

airplane to determine if the affected 

muffler is installed. 

We do not agree with this comment. 

The estimated cost of the AD applies 

specifically to addressing and correcting 

the unsafe condition. The FAA process 

for determining the cost of compliance 

does not include the initial 

determination of applicability. Also, for 

many airplanes, a review of the 

maintenance records will identify if the 

affected muffler is installed. 

We have not changed this AD based 

on this comment. 

Request We Allow the Use of Other 

Service Information for Muffler 

Replacement 

David McGhee requested we revise 

the AD to allow the use of other service 

information for installing a replacement 

muffler. Operators may choose to install 

an FAA-approved muffler from a source 

other than AWI. The service information 

proposed in the NPRM may not be 

appropriate for mufflers produced by a 

different manufacturer. 

We agree with this comment. If an 

operator installs an FAA-approved 

muffler other than the AWI muffler, the 

installation instructions from that 

manufacturer should be used. 

We have revised the language in this 

AD to allow the use of the 

manufacturer’s installation instructions 

for the specific muffler that is being 

installed. 

Request We Revise the Subject Heading 

Thomas Nelson requested we revise 

the subject heading of the AD because 

it is not part of the company’s name and 

implies the AD applies to all mufflers 

made by this company. 

We partially agree with this comment. 

We agree the subject header could more 

clearly define the specific mufflers this 

AD applies to; however, we disagree 

with revising the subject header. The 

subject header is intended as a general 

header and is not intended to include 

details that address the specifics of 

applicability. The Office of the Federal 

Register develops the guidelines for the 

format and structure of rulemaking 

documents for all federal agencies to 

follow. 

We have not changed this AD based 

on this comment. 

Conclusion 

We reviewed the relevant data, 

considered the comments received, and 

determined that air safety and the 

public interest require adopting this 

final rule with the changes described 

previously and minor editorial changes. 

We have determined that these minor 

changes: 

• Are consistent with the intent that 

was proposed in the NPRM for 

correcting the unsafe condition; and 


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2356 Federal Register / Vol. 83, No. 11 / Wednesday, January 17, 2018 / Rules and Regulations 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM. 

We also determined that these 

changes will not increase the economic 

burden on any operator or increase the 

scope of this final rule. 

Related Service Information Under 1 

CFR Part 51 

We reviewed AWI Cessna 172 

(Lycoming) Muffler Removal and 

Installation, Revision 01, January 17, 

2017. The service information describes 

procedures for removing and replacing 

the affected mufflers. 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 the ADDRESSES section. 

Other Related Service Information 

We reviewed AWI Mandatory Service 

Bulletin No. 15063001, dated June 30, 

2015. The service bulletin describes 

how to identify the installation of an 

affected muffler. 

Costs of Compliance 

We estimate that this AD affects 171 

mufflers installed on airplanes of U.S. 

registry. 

We estimate the following costs to 

comply with this AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Inspection of muffler ................................... 1 work-hour × $85 per hour = $85 ........... Not applicable ......... $85 $14,535 

Replacement of the muffler ........................ 4 work-hours × $85 per hour = $340 ....... $350 ........................ 690 117,990 

This AD affects 171 mufflers with 

PMA; however, only 9 mufflers remain 

in service. 

According to the manufacturer, some 

of the costs of this AD may be covered 

under warranty, thereby reducing the 

cost impact on affected individuals. We 

do not control warranty coverage for 

affected individuals. As a result, we 

have included all costs in our cost 

estimate. 

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 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. 

This AD is issued in accordance with 

authority delegated by the Executive 

Director, Aircraft Certification Service, 

as authorized by FAA Order 8000.51C. 

In accordance with that order, issuance 

of ADs is normally a function of the 

Compliance and Airworthiness 

Division, but during this transition 

period, the Executive Director has 

delegated the authority to issue ADs 

applicable to small airplanes, gliders, 

balloons, airships, domestic business jet 

transport airplanes, and associated 

appliances to the Director of the Policy 

and Innovation Division. 

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, 

(2) Is not a ‘‘significant rule’’ under 

DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979), 

(3) Will not affect intrastate aviation 

in Alaska, 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. 

Adoption of 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 (AD): 

2018–02–04 Aerospace Welding 

Minneapolis, Inc.: Amendment 39– 

19157; Docket No. FAA–2017–0324; 

Product Identifier 2017–CE–004–AD. 

(a) Effective Date 

This AD is effective February 21, 2018. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Aerospace Welding 

Minneapolis, Inc. (AWI) mufflers listed in 

figure 1 of paragraph (c) of this AD that are 

installed on but not limited to the airplanes 

listed in figure 2 of paragraph (c) of this AD. 

Note 1 to paragraph (c) of this AD: You 

may use AWI Mandatory Service Bulletin No. 

15063001, dated June 30, 2015, to identify if 

an affected muffler is installed on the 

airplane. 


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Federal Register / Vol. 83, No. 11 / Wednesday, January 17, 2018 / Rules and Regulations 2357 

FIGURE 1 OF PARAGRAPH (c) OF THIS AD—AFFECTED MUFFLERS

Muffler part No. Muffler serial Nos. 

A1754001–23 ............ 33553 through 33557; 34721 through 34728; 35322 through 35329; 35670; 38481 through 38485; 38584 through

38586; and 38723 through 38727. 

A1754001–25 ............ 32795 through 32800; 33558 through 33569; 33779 through 33790; 34636 through 34653; 34968 through 34984; 35159 

through 35176; 37903 through 37906; 38174 through 38193; 38502 through 38506; 38566 through 38575; and 38817 

through 38836. 

FIGURE 2 OF PARAGRAPH (c) OF THIS AD—AFFECTED AIRPLANES

Muffler part No. Textron Aviation Inc. (type certificate previously held by Cessna Aircraft Company) airplanes 

A1754001–23 ............ Model 172 Serial numbers (S/Ns) 17259224 and up; Model 172R S/Ns 80001 and up; and Model 172S S/Ns 8001 and 

up. 

A1754001–25 ............ Model 172 S/Ns 17256513 and up; Model 172R S/Ns 80001 and up; 172S S/N 8001 and up; and Model 177 S/N 

1770001 and up. 

(d) Subject 

Joint Aircraft System Component (JASC)/ 

Air Transport Association (ATA) of America 

Code 7820, Exhaust Noise Suppressor. 

(e) Unsafe Condition 

This AD was prompted by occurrences of 

cracks or broken welds in the connecting 

weld of the muffler body to muffler cuff that 

may allow carbon monoxide (CO) exhaust 

fumes into the cockpit heating system. We 

are issuing this AD to prevent cracks in the 

connecting weld of the muffler body to 

muffler cuff that may allow CO fumes to 

enter the cockpit heating system and possibly 

inhibit the pilot’s ability to maintain control 

of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Inspection of the Muffler 

(1) Within 5 hours time-in-service after 

February 21, 2018 (the effective date of this 

AD), inspect the affected muffler following 

the instructions listed in paragraphs (g)(1)(i) 

through (iii). 

(i) Using a vacuum cleaner with the hose 

attached to the blowing side of the vacuum 

(with the filter installed), attach the vacuum 

to the airplane tailpipe and seal securely. 

(ii) The vacuum will pressurize the system 

sufficiently for a soap solution to be brushed 

or applied from a spray bottle to the surface 

of the exhaust system. 

(iii) Inspect for evidence of breaches 

(leakage) in the system from cracks. 

(2) In lieu of doing the inspection required 

in paragraph (g)(1) of this AD, within 5 hours 

after February 21, 2018 (the effective date of 

this AD), you may remove the affected 

muffler following AWI Cessna 172 

(Lycoming) Muffler Removal and Installation, 

Revision 01, January 17, 2017, and replace 

the affected muffler with an FAA-approved 

part that is not a muffler listed in figure 1 of 

paragraph (c) of this AD following the 

manufacturer’s instructions. 

(3) If replacement specified in paragraph 

(g)(2) of this AD is done instead of the 

inspection required in paragraph (g)(1) of this 

AD, then paragraph (h)(3) of this AD is the 

only additional requirement of this AD. 

(h) Replacement of the Muffler 

(1) If evidence of breaches (leakage) is 

found during the inspection required in 

paragraph (g) of this AD, before further flight, 

remove the affected muffler following AWI 

Cessna 172 (Lycoming) Muffler Removal and 

Installation, Revision 01, January 17, 2017, 

and replace the affected muffler with an 

FAA-approved part that is not a muffler 

listed in figure 1 of paragraph (c) of this AD 

following the manufacturer’s instructions. 

(2) If no evidence of breaches (leakage) is 

found during the inspection required in 

paragraph (g) of this AD, within the next 100 

hours TIS after February 21, 2018 (the 

effective date of this AD) or at the next 

annual inspection after February 21, 2018 

(the effective date of this AD), whichever 

occurs later, remove and replace the affected 

muffler with an FAA-approved part that is 

not a muffler listed in figure 1 of paragraph 

(c) of this AD as described in (h)(1). 

(3) After February 21, 2018 (the effective 

date of this AD), do not install on any 

airplane an affected muffler listed in figure 

1 of paragraph (c) of this AD. 

(i) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Chicago ACO 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 

ACO Branch, send it to the attention of the 

person identified in paragraph (j)(1) of this 

AD. 

(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. 

(j) Related Information 

For more information about this AD, 

contact Mark Grace, Aerospace Engineer, 

FAA, Chicago ACO Branch, 2300 East Devon 

Avenue, Des Plaines, IL 60018–4696; 

telephone: (847) 294–7377; fax: (847) 294– 

7834; email: mark.grace@faa.gov. 

(k) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) 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) AWI Cessna 172 (Lycoming) Muffler 

Removal and Installation, Revision 01, 

January 17, 2017. 

(ii) Reserved. 

(3) For service information identified in 

this AD, contact Aerospace Welding 

Minneapolis, Inc. (AWI) 1045 Gemini Road, 

Eagan, Minnesota 55121; telephone: 651– 

379–9888; fax: 651–379–9889; internet: 

www.awi-ami.com. 

(4) You may view this service information 

at FAA, Policy and Innovation Division, 901 

Locust, Kansas City, Missouri 64106. For 

information on the availability of this 

material at the FAA, call (816) 329–4148. 

(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, call 

202–741–6030, or go to: http://

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

Issued in Kansas City, Missouri, on January 

8, 2018. 

Melvin Johnson, 

Deputy Director, Policy and Innovation 

Division, Aircraft Certification Service. 

[FR Doc. 2018–00479 Filed 1–16–18; 8:45 am] 

BILLING CODE 4910–13–P 


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