42586 Federal Register / Vol. 82, No. 174 / Monday, September 11, 2017 / Rules and Regulations 

related investigative and corrective actions 

before further flight. 

(h) Software Revision and Placard Removal 

For airplanes identified in paragraph (c)(3) 

of this AD: Within 72 months after the 

effective date of this AD, revise the software 

and remove the placard, in accordance with 

the Accomplishment Instructions of Aviation 

Partners Boeing Service Bulletin AP737–34– 

005, dated July 17, 2015. 

(i) Credit for Previous Actions 

(1) This paragraph provides credit for the 

actions specified in paragraphs (g)(1) and 

(g)(2) of this AD for Aviation Partners Boeing 

Service Bulletin AP737–27–002, Revision 4, 

dated April 24, 2017, if those actions were 

performed before the effective date of this AD 

using the service information specified in 

paragraph (i)(1)(i), (i)(1)(ii), (i)(1)(iii), or 

(i)(1)(iv) of this AD. 

(i) Aviation Partners Boeing Service 

Bulletin AP737–27–002, dated March 31, 

2015. 

(ii) Aviation Partners Boeing Service 

Bulletin AP737–27–002, Revision 1, dated 

August 6, 2015. 

(iii) Aviation Partners Boeing Service 

Bulletin AP737–27–002, Revision 2, dated 

March 1, 2016. 

(iv) Aviation Partners Boeing Service 

Bulletin AP737–27–002, Revision 3, dated 

July 19, 2016. 

(2) This paragraph provides credit for the 

actions specified in paragraph (g)(2) of this 

AD for Boeing Alert Service Bulletin 737– 

27A1306, dated September 10, 2015, as 

revised by Boeing Alert Service Bulletin 737– 

27A1306, Revision 1, dated December 14, 

2016, if those actions were performed before 

the effective date of this AD using the service 

information specified in Boeing Alert Service 

Bulletin 737–27A1306, dated September 10, 

2015. 

(j) Exceptions to the Service Information 

(1) Where Aviation Partners Boeing Service 

Bulletin AP737–27–002, Revision 4, dated 

April 24, 2017, specifies to contact Boeing for 

appropriate action, and specifies that action 

as Required for Compliance (RC): Before 

further flight, repair using a method 

approved in accordance with the procedures 

specified in paragraph (k) of this AD. 

(2) Although Note 3 of paragraph 3.A., 

‘‘General,’’ Aviation Partners Boeing Service 

Bulletin AP737–27–002, Revision 4, dated 

April 24, 2017, specifies to make an entry 

into the airplane’s records, that action is not 

required by this AD. 

(k) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Seattle 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 

certification office, send it to the attention of 

the person identified in paragraph (l)(1) of 

this AD. Information may be emailed to: 9- 

ANM-Seattle-ACO-AMOC-Requests@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. 

(3) An AMOC that provides an acceptable 

level of safety may be used for any repair, 

modification, or alteration required by this 

AD if it is approved by the Boeing 

Commercial Airplanes Organization 

Designation Authorization (ODA) that has 

been authorized by the Manager, Seattle ACO 

Branch, to make those findings. For a repair 

method to be approved, the repair, 

modification deviation, or alteration 

deviation must meet the certification basis of 

the airplane, and the approval must 

specifically refer to this AD. 

(4) Except as required by paragraph (j) of 

this AD: For service information that 

contains steps that are labeled as RC, the 

provisions of paragraphs (k)(4)(i) and 

(k)(4)(ii) of this AD apply. 

(i) The steps labeled as RC, including 

substeps under an RC step and any figures 

identified in an RC step, must be done to 

comply with the AD. An AMOC is required 

for any deviations to RC steps, including 

substeps and identified figures. 

(ii) Steps not labeled as RC may be 

deviated from using accepted methods in 

accordance with the operator’s maintenance 

or inspection program without obtaining 

approval of an AMOC, provided the RC steps, 

including substeps and identified figures, can 

still be done as specified, and the airplane 

can be put back in an airworthy condition. 

(l) Related Information 

(1) For more information about this AD, 

contact Fnu Winarto, Aerospace Engineer, 

Systems and Equipment Section, FAA, 

Seattle ACO Branch, 1601 Lind Avenue SW., 

Renton, WA 98057–3356; phone: 425–917– 

6659; fax: 425–917–6590; email: 

fnu.winarto@faa.gov. 

(2) Service information identified in this 

AD that is not incorporated by reference is 

available at the addresses specified in 

paragraphs (m)(3), (m)(4), and (m)(5) of this 

AD. 

(m) 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) Aviation Partners Boeing Service 

Bulletin AP737–27–002, Revision 4, dated 

April 24, 2017. 

(ii) Aviation Partners Boeing Service 

Bulletin AP737–34–005, dated July 17, 2015. 

(iii) Boeing Alert Service Bulletin 737– 

27A1306, dated September 10, 2015. 

(iv) Boeing Alert Service Bulletin 737– 

27A1306, Revision 1, dated December 14, 

2016. 

(3) For Aviation Partners Boeing service 

information identified in this AD, contact 

Aviation Partners Boeing, 2811 South 102nd 

Street, Suite 200, Seattle, WA 98168; phone: 

206–830–7699; fax: 206–767–3355; email: 

leng@aviationpartners.com; Internet: http://

www.aviationpartnersboeing.com. 

(4) For Boeing service information 

identified in this AD, contact Boeing 

Commercial Airplanes, Attention: 

Contractual & Data Services (C&DS), 2600 

Westminster Blvd., MC 110–SK57, Seal 

Beach, CA 90740–5600; telephone 562–797– 

1717; Internet https://

www.myboeingfleet.com. 

(5) You may view this service information 

at the FAA, Transport Standards Branch, 

1601 Lind Avenue SW., Renton, WA. For 

information on the availability of this 

material at the FAA, call 425–227–1221. 

(6) 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 Renton, Washington, on August 

30, 2017. 

Jeffrey E. Duven, 

Director, System Oversight Division, Aircraft 

Certification Service. 

[FR Doc. 2017–19039 Filed 9–8–17; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2017–0608; Product 

Identifier 2017–CE–017–AD; Amendment 

39–19020; AD 2017–18–11] 

RIN 2120–AA64 

Airworthiness Directives; Textron 

Aviation Inc. Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Textron Aviation Inc. Model 390 

airplanes (type certificate previously 

held by Beechcraft Corporation). This 

AD was prompted by reports of 

hydraulic fluid loss from the engine 

driven pumps (EDPs) on three different 

airplanes. This AD requires an 

inspection to determine if an affected 

EDP is installed with replacement as 

necessary. We are issuing this AD to 

address the unsafe condition on these 

products. 

DATES: This AD is effective October 16, 

2017. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of October 16, 2017. 

ADDRESSES: For service information 

identified in this final rule, contact 


asabaliauskas on DSKBBXCHB2PROD with RULES
Federal Register / Vol. 82, No. 174 / Monday, September 11, 2017 / Rules and Regulations 42587 

Textron Aviation Inc., Textron Aviation 

Customer Service, P.O. Box 7706, 

Wichita, Kansas 67277; telephone: (316) 

517–5800; email: premier@txtav.com; 

Internet: www.txtavsupport.com. For 

information on the availability of this 

material 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– 

0608. 

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– 

0608; or in person at the Docket 

Management Facility 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 the 

Docket Office (phone: 800–647–5527) is 

Document Management Facility, 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: Paul 

C. DeVore, Aerospace Engineer, Wichita 

ACO Branch, 1801 Airport Road, Room 

100, Wichita, Kansas 67209; telephone: 

(316) 946–4142; fax: (316) 946–4107, 

email: paul.devore@faa.gov or WichitaCOS@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 Textron Aviation Inc. 

Model 390 airplanes (type certificate 

previously held by Beechcraft 

Corporation). The NPRM published in 

the Federal Register on June 20, 2017 

(82 FR 28026). The NPRM was 

prompted by reports of hydraulic fluid 

loss from the engine driven pumps 

(EDPs) on three different Textron 

Aviation Inc. Model 390 airplanes. In 

one incident, the airplane exited the 

runway at a high speed, resulting in 

extensive damage to the airplane. One 

manufacturing lot of EDPs has excessive 

pitting in the aluminum port caps that 

could cause multiple-origin fatigue 

cracking of the port caps. Flammable 

hydraulic fluid could leak into the 

engine compartment, and the leaking 

could also cause loss of all normal 

hydraulic functions, including normal 

anti-skid braking, ground spoilers, 

speedbrakes, and normal landing gear 

extension. The NPRM proposed to 

require an inspection to determine if an 

affected EDP is installed with 

replacement as necessary. 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. 

We received no comments on the NPRM 

or on the determination of the cost to 

the public. 

Conclusion 

We reviewed the relevant data and 

determined that air safety and the 

public interest require adopting this 

final rule as proposed except for 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 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM. 

Related Service Information Under 1 

CFR Part 51 

We reviewed Parker Service Bulletin 

66179–29–486, dated August 4, 2016, 

which identifies the affected serial 

number EDPs. We also reviewed 

Beechcraft Mandatory Service Bulletin 

SB 29–4161, dated November 18, 2016, 

which describes procedures for 

determining if an affected serial number 

EDP is installed and procedures for 

replacing the EDP if necessary. 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. 

Costs of Compliance 

We estimate that this AD affects 179 

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 to determine if affected serial 

number EDP is installed.

.5 work-hour × $85 per hour = $42.50 ........ Not applicable ..... $42.50 $7,607.50 

We estimate the following costs to do 

any necessary replacement that would 

be required based on the results of the 

inspection. We estimate the affected 

manufacturer lot of EDPs as 28 EDPs. If 

an airplane has two of the affected EDPs 

installed, both EDPs must be replaced. 

However, no more than a total of 28 

EDPs will require replacing for the U.S. 

fleet: 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Replacement of the EDP .............................................. 3 work-hours × $85 per hour = $255 ........................... $17,388 $17,643 

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 


asabaliauskas on DSKBBXCHB2PROD with RULES
42588 Federal Register / Vol. 82, No. 174 / Monday, September 11, 2017 / Rules and Regulations 

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 and 

domestic business jet transport 

airplanes 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): 

2017–18–11 Textron Aviation Inc.: 

Amendment 39–19020; Docket No. 

FAA–2017–0608; Product Identifier 

2017–C E–017–AD. 

(a) Effective Date 

This AD is effective October 16, 2017. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Textron Aviation Inc. 

(type certificate previously held by 

Beechcraft Corporation) Model 390 airplanes; 

serial numbers RB–4 through RB–295; 

certificated in any category. 

(d) Subject 

Joint Aircraft System Component (JASC)/ 

Air Transport Association (ATA) of America 

Code 29, Hydraulic Power. 

(e) Unsafe Condition 

This AD was prompted by reports of 

hydraulic fluid loss from the engine driven 

pumps (EDPs) on three different airplanes. 

We are issuing this AD to prevent cracking 

of the EDP that could cause leakage of 

hydraulic fluid and possibly lead to loss of 

normal hydraulic functions, which could 

lead to a high-speed runway overrun and/or 

an in-flight fire. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Inspection 

Within 100 hours time-in service (TIS) 

after October 16, 2017 (the effective date of 

this AD), inspect the airplane to determine if 

any affected serial number EDP, part number 

(P/N) 66179–01 (Beechcraft/Textron P/N 

390–389022–0003), is installed on the 

airplane following the Accomplishment 

Instructions in Beechcraft Mandatory Service 

Bulletin SB 29–4161, dated November 18, 

2016. Use table 1 in Parker Service Bulletin 

66179–29–486, dated August 4, 2016, to 

identify the affected serial numbers of EDP, 

P/N 66179–01 (Beechcraft/Textron P/N 390– 

389022–0003). 

(h) Replacement 

If any affected serial number EDP was 

found during the inspection required in 

paragraph (g) of this AD, within 100 hours 

TIS after October 16, 2017 (the effective date 

of this AD), replace any affected serial 

number EDP, P/N 66179–01 (Beechcraft/ 

Textron P/N 390–389022–0003), with a 

serviceable serial number EDP, P/N 66179–01 

(Beechcraft/Textron P/N 390–389022–0003) 

that is either not listed in table 1 of Parker 

Service Bulletin 66179–29–486, dated August 

4, 2016, or has been reworked following 

Parker Service Bulletin 66179–29–486, dated 

August 4, 2016. Use the Accomplishment 

Instructions in Beechcraft Mandatory Service 

Bulletin SB 29–4161, dated November 18, 

2016, to do the replacement actions. 

(i) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Wichita 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) 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 Paul C. DeVore, Aerospace Engineer, 

Wichita ACO Branch, 1801 Airport Road, 

Room 100, Wichita, Kansas 67209; telephone: 

(316) 946–4142; fax: (316) 946–4107, email: 

paul.devore@faa.gov or Wichita-COS@

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) Beechcraft Mandatory Service Bulletin 

SB 29–4161, dated November 18, 2016. 

(ii) Parker Service Bulletin 66179–29–486, 

dated August 4, 2016. 

(3) For service information identified in 

this AD, contact Textron Aviation Inc., 

Textron Aviation Customer Service, P.O. Box 

7706, Wichita, Kansas 67277; telephone: 

(316) 517–5800; email: premier@txtav.com; 

Internet: www.txtavsupport.com; Internet: 

www.txtav.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. 


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Federal Register / Vol. 82, No. 174 / Monday, September 11, 2017 / Rules and Regulations 42589 

Issued in Kansas City, Missouri, on August 

29, 2017. 

Melvin Johnson, 

Deputy Director, Policy and Innovation 

Division, Aircraft Certification Service. 

[FR Doc. 2017–18908 Filed 9–8–17; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2017–0439; Product 

Identifier 2017–CE–010–AD; Amendment 

39–19021; AD 2017–18–12] 

RIN 2120–AA64 

Airworthiness Directives; B/E 

Aerospace Protective Breathing 

Equipment Part Number 119003–11 

and Part Number 119003–21 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are superseding 

Airworthiness Directive (AD) 2016–11– 

20 for certain B/E Aerospace protective 

breathing equipment (PBE) that is 

installed on airplanes. AD 2016–11–20 

required replacing part number (P/N) 

119003–11 PBE units. Since we issued 

AD 2016–11–20, we received a report 

that PBE units, P/N 119003–21, within 

a certain serial number range are made 

with candle tube material determined to 

have a low yield strength and may be 

volatile upon use or disposal. This AD 

retains the actions required in AD 2016– 

11–20 and requires inspecting and 

replacing P/N 119003–11 and 119003– 

21 PBE units. We are issuing this AD to 

address the unsafe condition on these 

products. 

DATES: This AD is effective October 16, 

2017. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of October 16, 2017. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain other publication listed in this 

AD as of July 15, 2016 (81 FR 37492, 

June 10, 2016). 

ADDRESSES: For service information 

identified in this final rule, contact B/ 

E Aerospace, Inc., Commercial Aircraft 

Products Group, 10800 Pflumm Road, 

Lenexa, Kansas 66215; phone: (913) 

338–9800; fax: (913) 338–8419; Internet: 

www.beaerospace.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–2017–0439. 

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– 

0439; or in person at the Docket 

Management Facility 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 the 

Docket Office (phone: 800–647–5527) is 

Document Management Facility, 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: 

David Enns, Aerospace Engineer, 

Wichita ACO Branch, FAA, 1801 S. 

Airport Road, Room 100, Wichita, 

Kansas 67209; phone: (316) 946–4147; 

fax: (316) 946–4107; email: david.enns@

faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede AD 2016–11–20, 

Amendment 39–18547 (81 FR 37492, 

June 10, 2016), (‘‘AD 2016–11–20’’), for 

B/E Aerospace protective breathing 

equipment (PBE), part number (P/N) 

119003–11, that is installed on 

airplanes. The NPRM published in the 

Federal Register on May 26, 2017 (82 

FR 24260). The NPRM was prompted by 

a report that PBE units, P/N 119003–21, 

within a certain serial number range are 

made with candle tube material 

determined to have a low yield strength 

and may be volatile upon use or 

disposal. The NPRM proposed to retain 

the actions required in AD 2016–11–20 

and would require inspecting and 

replacing P/N 119003–11 and 119003– 

21 PBE units. 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 AD. The 

following presents the comments 

received on the NPRM and the FAA’s 

response to each comment. 

Request To Include Additional 

Compliance Method for Paragraph (i) of 

This AD 

David White, of NetJets Aviation, 

requested that the action required in 

paragraph (i) of this AD for determining 

the serial number of the installed PBE, 

P/N 119003–21, also include a 

maintenance records review. 

The commenter stated that if the 

maintenance records are available and 

the determination can positively be 

made, this review will save the owners/ 

operators time and money. 

We agree with the commenter and 

have changed this AD based on this 

comment. 

Request for Clarification of Compliance 

Time for Paragraph (j) of This AD 

David White, of NetJets Aviation, 

requested that the compliance time in 

paragraph (j) of this AD to be clarified. 

The commenter stated that paragraph 

(j) of this AD requires replacement of an 

affected mask before further flight or 

following existing minimum equipment 

list (MEL) procedures, but it does not 

identify if compliance is required at the 

earlier or the later of the two thresholds. 

We do not agree with commenter. The 

MEL is a document and method 

airplane operators use to obtain relief 

from Federal Aviation Regulations that 

requires all equipment installed on the 

airplane be operative at the time of 

flight. It is airplane-specific and spells 

out which pieces of equipment may be 

inoperable along with any procedures 

that are required for an airplane to 

operate under specific conditions while 

maintaining airworthiness. The 

reference to MEL is a reminder that, 

depending on the airplane and its MEL, 

it may be acceptable to remove the 

affected units and continue to operate 

with a reduced number of PBEs as 

stated in the specific MEL. The affected 

units must be removed upon discovery. 

We have changed this AD based on 

this comment to make this more clear. 

Request To Change the Compliance 

Time in Paragraph (j) of This AD 

David White, of NetJets Aviation, 

requested we change the replacement 

compliance time in paragraph (j) of this 

AD to match the compliance time in 

paragraph (i) of this AD, which would 

allow six months to replace the affected 

PBE after it is identified by inspection 

or maintenance records review. 

The commenter stated that if the 

request to allow a records review for 

paragraph (i) of this AD is accepted, 

then the maintenance records review 

could be accomplished without access 

to the airplane and could result in 


asabaliauskas on DSKBBXCHB2PROD with RULES