Airworthiness Directives; The Boeing Company Airplanes, 32341-32343 [2019-14284]
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<![CDATA[
Federal Register / Vol. 84, No. 130 / Monday, July 8, 2019 / Proposed Rules
Issued in Des Moines, Washington, on June
27, 2019.
Dionne Palermo,
Acting Director, System Oversight Division,
Aircraft Certification Service.
[FR Doc. 2019–14286 Filed 7–5–19; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2019–0478; Product
Identifier 2019–NM–040–AD]
RIN 2120–AA64
Airworthiness Directives; The Boeing
Company Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
The FAA proposes to
supersede Airworthiness Directive (AD)
2017–12–07, which applies to certain
The Boeing Company Model 737–800,
–900, and –900ER series airplanes. AD
2017–12–07 requires replacing the
affected left temperature control valve
and control cabin trim air modulating
valve. Since the FAA issued AD 2017–
12–07, the agency determined that the
affected parts may be installed on
airplanes outside the original
applicability of AD 2017–12–07. This
proposed AD would retain the
requirements of AD 2017–12–07,
expand the applicability to include
those other airplanes, and add a new
requirement for certain airplanes to
identify and replace the affected parts.
The FAA is proposing this AD to
address the unsafe condition on these
products.
SUMMARY:
The FAA must receive comments
on this proposed AD by August 22,
2019.
DATES:
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
https://www.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 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.
jbell on DSK3GLQ082PROD with PROPOSALS
ADDRESSES:
VerDate Sep<11>2014
18:54 Jul 05, 2019
Jkt 247001
For service information identified in
this NPRM, 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. You may view
this service information at the FAA,
Transport Standards Branch, 2200
South 216th St., Des Moines, WA. For
information on the availability of this
material at the FAA, call 206–231–3195.
It is also available on the internet at
https://www.regulations.gov by searching
for and locating Docket No. FAA–2019–
0478.
Examining the AD Docket
You may examine the AD docket on
the internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2019–
0478; 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 NPRM, the
regulatory evaluation, any comments
received, and other information. The
street address for Docket Operations is
listed above. Comments will be
available in the AD docket shortly after
receipt.
Julie
Moon, Aerospace Engineer, Cabin Safety
and Environmental Systems Section,
FAA, Seattle ACO Branch, 2200 South
216th St., Des Moines, WA 98198;
phone and fax: 206–231–3571; email:
julie.moon@faa.gov.
FOR FURTHER INFORMATION CONTACT:
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any
written relevant data, views, or
arguments about this proposal. Send
your comments to an address listed
under the ADDRESSES section. Include
‘‘Docket No. FAA–2019–0478; Product
Identifier 2019–NM–040–AD’’ at the
beginning of your comments. The
agency specifically invites comments on
the overall regulatory, economic,
environmental, and energy aspects of
this NPRM. The agency will consider all
comments received by the closing date
and may amend this NPRM because of
those comments.
The FAA will post all comments
received, without change, to https://
www.regulations.gov, including any
personal information you provide. The
FAA will also post a report
summarizing each substantive verbal
contact the agency receives about this
proposed AD.
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Fmt 4702
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32341
Discussion
The FAA issued AD 2017–12–07,
Amendment 39–18922 (82 FR 27416,
June 15, 2017) (‘‘AD 2017–12–07’’), for
certain The Boeing Company Model
737–800, –900, and –900ER series
airplanes. AD 2017–12–07 requires
replacing the affected left temperature
control valve and control cabin trim air
modulating valve. AD 2017–12–07
resulted from reports of in-flight failure
of the left temperature control valve and
control cabin trim air modulating valve.
The FAA issued AD 2017–12–07 to
address the possible occurrence of
temperatures in excess of 100 degrees
Fahrenheit in the flight deck or the
passenger cabin during cruise, which
could lead to the impairment of the
flightcrew and prevent continued safe
flight and landing.
Actions Since AD 2017–12–07 Was
Issued
Since AD 2017–12–07 was issued, it
has been determined that the affected
parts may be installed as rotable spares
on airplanes outside of the applicability
of AD 2017–12–07, thereby subjecting
those airplanes to the unsafe condition.
Related Service Information Under 1
CFR Part 51
This proposed AD would require
Boeing Alert Service Bulletin 737–
21A1203, dated June 8, 2016, which the
Director of the Federal Register
approved for incorporation by reference
as of July 20, 2017 (82 FR 27416, June
15, 2017). 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.
FAA’s Determination
The FAA is proposing this AD
because the agency evaluated all the
relevant information and determined
the unsafe condition described
previously is likely to exist or develop
in other products of the same type
design.
Proposed AD Requirements
This proposed AD would retain all
requirements of AD 2017–12–07, and
expand the applicability to include all
The Boeing Company Model 737–800,
–900, and –900ER series airplanes. This
proposed AD would also require an
inspection or records check to identify
the part number of the affected parts,
and for airplanes with affected parts,
accomplishing the actions specified in
the service information described
previously, except as discussed under
E:\FR\FM\08JYP1.SGM
08JYP1
32342
Federal Register / Vol. 84, No. 130 / Monday, July 8, 2019 / Proposed Rules
‘‘Differences Between this Proposed AD
and the Service Information.’’
For information on the procedures
and compliance times, see this service
information at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2019–
0478.
Differences Between This Proposed AD
and the Service Information
The effectivity of Boeing Alert Service
Bulletin 737–21A1203, dated June 8,
2016, is limited to certain The Boeing
Company Model 737–800, -900, and
-900ER series airplanes. However, the
applicability of this proposed AD
includes all The Boeing Company
Model 737–800, –900, and –900ER
series airplanes. Because the affected
parts are rotable parts, the FAA has
determined that these parts could later
be installed on airplanes that were
initially delivered with acceptable parts,
thereby subjecting those airplanes to the
unsafe condition. This difference has
been coordinated with Boeing.
Costs of Compliance
The FAA estimates that this proposed
AD affects 2,027 airplanes of U.S.
registry. The agency estimates the
following costs to comply with this
proposed AD:
ESTIMATED COSTS FOR REQUIRED ACTIONS
Cost per
product
Labor cost
Inspection/records check (new proposed
actions) (Up to 1,708 airplanes).
Replacement (retained actions from AD
2017–12–07) (Up to 319 airplanes).
1 work-hour × $85 per hour = $85 ............
$0
$85
9 work-hours × $85 per hour = $765 .........
4,800
5,565
The agency estimates the following
costs to do any necessary replacements
that would be required based on the
Parts cost
Cost on U.S.
operators
Action
results of the proposed inspection or
records check. The agency has no way
Up to $145,180.
Up to $1,775,235.
of determining the number of aircraft
that might need these replacements:
ON-CONDITION COSTS
Action
Labor cost
Replacement .................................................................
9 work-hours × $85 per hour = $765 ...........................
jbell on DSK3GLQ082PROD with PROPOSALS
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.
This proposed 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
VerDate Sep<11>2014
18:54 Jul 05, 2019
Jkt 247001
Parts cost
Cost per
product
$4,800
$5,565
this transition period, the Executive
Director has delegated the authority to
issue ADs applicable to transport
category airplanes and associated
appliances to the Director of the System
Oversight Division.
List of Subjects in 14 CFR Part 39
Regulatory Findings
Accordingly, under the authority
delegated to me by the Administrator,
the FAA proposes to amend 14 CFR part
39 as follows:
The FAA has 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 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 the proposed regulation:
(1) Is not a ‘‘significant regulatory
action’’ under Executive Order 12866,
(2) Will not affect intrastate aviation
in Alaska, and
(3) 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.
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Frm 00016
Fmt 4702
Sfmt 4702
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
The Proposed Amendment
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
removing Airworthiness Directive (AD)
2017–12–07, Amendment 39–18922 (82
FR 27416, June 15, 2017), and adding
the following new AD:
■
The Boeing Company: Docket No. FAA–
2019–0478; Product Identifier 2019–
NM–040–AD.
(a) Comments Due Date
The FAA must receive comments on this
AD action by August 22, 2019.
E:\FR\FM\08JYP1.SGM
08JYP1
Federal Register / Vol. 84, No. 130 / Monday, July 8, 2019 / Proposed Rules
(b) Affected ADs
This AD replaces AD 2017–12–07,
Amendment 39–18922 (82 FR 27416, June
15, 2017).
number 398908–4, in either the left
temperature control valve location or the
control cabin trim air modulating valve
location on any airplane.
(c) Applicability
This AD applies to all The Boeing
Company Model 737–800, -900, and -900ER
series airplanes, certificated in any category.
(j) 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 (k)(1) of
this AD. Information may be emailed to: 9ANM-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 Company
Organization Designation Authorization
(ODA) that has been authorized by the
Manager, Seattle ACO Branch, FAA, to make
those findings. To be approved, the repair
method, modification deviation, or alteration
deviation must meet the certification basis of
the airplane, and the approval must
specifically refer to this AD.
(4) For service information that contains
steps that are labeled as Required for
Compliance (RC), the provisions of
paragraphs (j)(4)(i) and (j)(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. If a step or substep is
labeled ‘‘RC Exempt,’’ then the RC
requirement is removed from that step or
substep. 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.
(d) Subject
Air Transport Association (ATA) of
America Code 21, Air conditioning.
(e) Unsafe Condition
This AD was prompted by reports of inflight failure of the left temperature control
valve and control cabin trim air modulating
valve. The FAA is issuing this AD to address
the possible occurrence of temperatures in
excess of 100 degrees Fahrenheit in the flight
deck or the passenger cabin during cruise,
which could lead to the impairment of the
flightcrew and prevent continued safe flight
and landing.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
jbell on DSK3GLQ082PROD with PROPOSALS
(g) Retained Valve Replacement, With
Revised Compliance Language
This paragraph restates the requirements of
paragraph (g) of AD 2017–12–07 with revised
compliance language. For airplanes
identified in Boeing Alert Service Bulletin
737–21A1203, dated June 8, 2016: Within 60
months after July 20, 2017 (the effective date
of AD 2017–12–07), replace the left
temperature control valve and control cabin
trim air modulating valve, as applicable, in
accordance with the Accomplishment
Instructions of Boeing Alert Service Bulletin
737–21A1203, dated June 8, 2016.
(h) New Valve Identification and
Replacement
For airplanes not identified in paragraph
(g) of this AD with an original certificate of
airworthiness or an original export certificate
of airworthiness dated on or before the
effective date of this AD, do the actions
specified in paragraphs (h)(1) and (h)(2) of
this AD.
(1) Within 60 months after the effective
date of this AD, perform a general visual
inspection of the left temperature control
valve and control cabin trim air modulating
valve to determine the valve part numbers. A
review of airplane maintenance records is
acceptable in lieu of this inspection if the
part numbers of the valves can be
conclusively determined from that review.
(2) If the left temperature control valve or
control cabin trim air modulating valve has
part number 398908–4: Within 60 months
after the effective date of this AD, replace the
left temperature control valve or control
cabin trim air modulating valve in
accordance with the Accomplishment
Instructions of Boeing Alert Service Bulletin
737–21A1203, dated June 8, 2016.
(i) Parts Installation Prohibition
As of the effective date of this AD, no
person may install a valve having part
VerDate Sep<11>2014
18:54 Jul 05, 2019
Jkt 247001
(k) Related Information
(1) For more information about this AD,
contact Julie Moon, Aerospace Engineer,
Cabin Safety and Environmental Systems
Section, FAA, Seattle ACO Branch, 2200
South 216th St., Des Moines, WA 98198;
phone and fax: 206–231–3571; email:
julie.moon@faa.gov.
(2) For 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. You may view this
referenced service information at the FAA,
Transport Standards Branch, 2200 South
PO 00000
Frm 00017
Fmt 4702
Sfmt 4702
32343
216th St., Des Moines, WA. For information
on the availability of this material at the
FAA, call 206–231–3195.
Issued in Des Moines, Washington, on June
24, 2019.
Dionne Palermo,
Acting Director, System Oversight Division,
Aircraft Certification Service.
[FR Doc. 2019–14284 Filed 7–5–19; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2019–0487; Product
Identifier 2019–NM–044–AD]
RIN 2120–AA64
Airworthiness Directives; The Boeing
Company Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
The FAA proposes to adopt a
new airworthiness directive (AD) for all
The Boeing Company Model 737–100,
–200, –200C, –300, –400, and –500
series airplanes. This proposed AD was
prompted by a report of a fuel leak
resulting from a crack on the left in-spar
upper wing skin. This proposed AD
would require repetitive surface high
frequency eddy current (HFEC)
inspections of the left and right upper
wing skin, and repetitive general visual
inspections of the upper wing skin in
the adjacent rib bay areas for any crack,
and applicable on-condition actions.
The FAA is proposing this AD to
address the unsafe condition on these
products.
SUMMARY:
The FAA must receive comments
on this proposed AD by August 22,
2019.
DATES:
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
https://www.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
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.
ADDRESSES:
E:\FR\FM\08JYP1.SGM
08JYP1
]]>Agencies
[Federal Register Volume 84, Number 130 (Monday, July 8, 2019)]
[Proposed Rules]
[Pages 32341-32343]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2019-14284]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2019-0478; Product Identifier 2019-NM-040-AD]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
-----------------------------------------------------------------------
SUMMARY: The FAA proposes to supersede Airworthiness Directive (AD)
2017-12-07, which applies to certain The Boeing Company Model 737-800,
-900, and -900ER series airplanes. AD 2017-12-07 requires replacing the
affected left temperature control valve and control cabin trim air
modulating valve. Since the FAA issued AD 2017-12-07, the agency
determined that the affected parts may be installed on airplanes
outside the original applicability of AD 2017-12-07. This proposed AD
would retain the requirements of AD 2017-12-07, expand the
applicability to include those other airplanes, and add a new
requirement for certain airplanes to identify and replace the affected
parts. The FAA is proposing this AD to address the unsafe condition on
these products.
DATES: The FAA must receive comments on this proposed AD by August 22,
2019.
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 https://www.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 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.
For service information identified in this NPRM, 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. You may
view this service information at the FAA, Transport Standards Branch,
2200 South 216th St., Des Moines, WA. For information on the
availability of this material at the FAA, call 206-231-3195. It is also
available on the internet at https://www.regulations.gov by searching
for and locating Docket No. FAA-2019-0478.
Examining the AD Docket
You may examine the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2019-
0478; 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 NPRM, the regulatory evaluation, any comments received, and other
information. The street address for Docket Operations is listed above.
Comments will be available in the AD docket shortly after receipt.
FOR FURTHER INFORMATION CONTACT: Julie Moon, Aerospace Engineer, Cabin
Safety and Environmental Systems Section, FAA, Seattle ACO Branch, 2200
South 216th St., Des Moines, WA 98198; phone and fax: 206-231-3571;
email: [email protected].
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under the ADDRESSES section. Include ``Docket No. FAA-2019-0478;
Product Identifier 2019-NM-040-AD'' at the beginning of your comments.
The agency specifically invites comments on the overall regulatory,
economic, environmental, and energy aspects of this NPRM. The agency
will consider all comments received by the closing date and may amend
this NPRM because of those comments.
The FAA will post all comments received, without change, to https://www.regulations.gov, including any personal information you provide.
The FAA will also post a report summarizing each substantive verbal
contact the agency receives about this proposed AD.
Discussion
The FAA issued AD 2017-12-07, Amendment 39-18922 (82 FR 27416, June
15, 2017) (``AD 2017-12-07''), for certain The Boeing Company Model
737-800, -900, and -900ER series airplanes. AD 2017-12-07 requires
replacing the affected left temperature control valve and control cabin
trim air modulating valve. AD 2017-12-07 resulted from reports of in-
flight failure of the left temperature control valve and control cabin
trim air modulating valve. The FAA issued AD 2017-12-07 to address the
possible occurrence of temperatures in excess of 100 degrees Fahrenheit
in the flight deck or the passenger cabin during cruise, which could
lead to the impairment of the flightcrew and prevent continued safe
flight and landing.
Actions Since AD 2017-12-07 Was Issued
Since AD 2017-12-07 was issued, it has been determined that the
affected parts may be installed as rotable spares on airplanes outside
of the applicability of AD 2017-12-07, thereby subjecting those
airplanes to the unsafe condition.
Related Service Information Under 1 CFR Part 51
This proposed AD would require Boeing Alert Service Bulletin 737-
21A1203, dated June 8, 2016, which the Director of the Federal Register
approved for incorporation by reference as of July 20, 2017 (82 FR
27416, June 15, 2017). 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.
FAA's Determination
The FAA is proposing this AD because the agency evaluated all the
relevant information and determined the unsafe condition described
previously is likely to exist or develop in other products of the same
type design.
Proposed AD Requirements
This proposed AD would retain all requirements of AD 2017-12-07,
and expand the applicability to include all The Boeing Company Model
737-800, -900, and -900ER series airplanes. This proposed AD would also
require an inspection or records check to identify the part number of
the affected parts, and for airplanes with affected parts,
accomplishing the actions specified in the service information
described previously, except as discussed under
[[Page 32342]]
``Differences Between this Proposed AD and the Service Information.''
For information on the procedures and compliance times, see this
service information at https://www.regulations.gov by searching for and
locating Docket No. FAA-2019-0478.
Differences Between This Proposed AD and the Service Information
The effectivity of Boeing Alert Service Bulletin 737-21A1203, dated
June 8, 2016, is limited to certain The Boeing Company Model 737-800, -
900, and -900ER series airplanes. However, the applicability of this
proposed AD includes all The Boeing Company Model 737-800, -900, and -
900ER series airplanes. Because the affected parts are rotable parts,
the FAA has determined that these parts could later be installed on
airplanes that were initially delivered with acceptable parts, thereby
subjecting those airplanes to the unsafe condition. This difference has
been coordinated with Boeing.
Costs of Compliance
The FAA estimates that this proposed AD affects 2,027 airplanes of
U.S. registry. The agency estimates the following costs to comply with
this proposed AD:
Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
Cost per
Action Labor cost Parts cost product Cost on U.S. operators
----------------------------------------------------------------------------------------------------------------
Inspection/records check (new 1 work-hour x $85 $0 $85 Up to $145,180.
proposed actions) (Up to 1,708 per hour = $85.
airplanes).
Replacement (retained actions 9 work-hours x $85 4,800 5,565 Up to $1,775,235.
from AD 2017-12-07) (Up to 319 per hour = $765.
airplanes).
----------------------------------------------------------------------------------------------------------------
The agency estimates the following costs to do any necessary
replacements that would be required based on the results of the
proposed inspection or records check. The agency has no way of
determining the number of aircraft that might need these replacements:
On-Condition Costs
----------------------------------------------------------------------------------------------------------------
Cost per
Action Labor cost Parts cost product
----------------------------------------------------------------------------------------------------------------
Replacement................................... 9 work-hours x $85 per hour = $4,800 $5,565
$765.
----------------------------------------------------------------------------------------------------------------
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.
This proposed 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 transport category airplanes and associated appliances to the
Director of the System Oversight Division.
Regulatory Findings
The FAA has 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 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 the proposed
regulation:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Will not affect intrastate aviation in Alaska, and
(3) 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.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
0
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by removing Airworthiness Directive (AD)
2017-12-07, Amendment 39-18922 (82 FR 27416, June 15, 2017), and adding
the following new AD:
The Boeing Company: Docket No. FAA-2019-0478; Product Identifier
2019-NM-040-AD.
(a) Comments Due Date
The FAA must receive comments on this AD action by August 22,
2019.
[[Page 32343]]
(b) Affected ADs
This AD replaces AD 2017-12-07, Amendment 39-18922 (82 FR 27416,
June 15, 2017).
(c) Applicability
This AD applies to all The Boeing Company Model 737-800, -900,
and -900ER series airplanes, certificated in any category.
(d) Subject
Air Transport Association (ATA) of America Code 21, Air
conditioning.
(e) Unsafe Condition
This AD was prompted by reports of in-flight failure of the left
temperature control valve and control cabin trim air modulating
valve. The FAA is issuing this AD to address the possible occurrence
of temperatures in excess of 100 degrees Fahrenheit in the flight
deck or the passenger cabin during cruise, which could lead to the
impairment of the flightcrew and prevent continued safe flight and
landing.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Retained Valve Replacement, With Revised Compliance Language
This paragraph restates the requirements of paragraph (g) of AD
2017-12-07 with revised compliance language. For airplanes
identified in Boeing Alert Service Bulletin 737-21A1203, dated June
8, 2016: Within 60 months after July 20, 2017 (the effective date of
AD 2017-12-07), replace the left temperature control valve and
control cabin trim air modulating valve, as applicable, in
accordance with the Accomplishment Instructions of Boeing Alert
Service Bulletin 737-21A1203, dated June 8, 2016.
(h) New Valve Identification and Replacement
For airplanes not identified in paragraph (g) of this AD with an
original certificate of airworthiness or an original export
certificate of airworthiness dated on or before the effective date
of this AD, do the actions specified in paragraphs (h)(1) and (h)(2)
of this AD.
(1) Within 60 months after the effective date of this AD,
perform a general visual inspection of the left temperature control
valve and control cabin trim air modulating valve to determine the
valve part numbers. A review of airplane maintenance records is
acceptable in lieu of this inspection if the part numbers of the
valves can be conclusively determined from that review.
(2) If the left temperature control valve or control cabin trim
air modulating valve has part number 398908-4: Within 60 months
after the effective date of this AD, replace the left temperature
control valve or control cabin trim air modulating valve in
accordance with the Accomplishment Instructions of Boeing Alert
Service Bulletin 737-21A1203, dated June 8, 2016.
(i) Parts Installation Prohibition
As of the effective date of this AD, no person may install a
valve having part number 398908-4, in either the left temperature
control valve location or the control cabin trim air modulating
valve location on any airplane.
(j) 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 (k)(1) of this AD. Information may be
emailed to: [email protected].
(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 Company Organization Designation
Authorization (ODA) that has been authorized by the Manager, Seattle
ACO Branch, FAA, to make those findings. To be approved, the repair
method, modification deviation, or alteration deviation must meet
the certification basis of the airplane, and the approval must
specifically refer to this AD.
(4) For service information that contains steps that are labeled
as Required for Compliance (RC), the provisions of paragraphs
(j)(4)(i) and (j)(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. If a step or substep is labeled ``RC Exempt,'' then the
RC requirement is removed from that step or substep. 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.
(k) Related Information
(1) For more information about this AD, contact Julie Moon,
Aerospace Engineer, Cabin Safety and Environmental Systems Section,
FAA, Seattle ACO Branch, 2200 South 216th St., Des Moines, WA 98198;
phone and fax: 206-231-3571; email: [email protected].
(2) For 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. You may view this referenced service
information at the FAA, Transport Standards Branch, 2200 South 216th
St., Des Moines, WA. For information on the availability of this
material at the FAA, call 206-231-3195.
Issued in Des Moines, Washington, on June 24, 2019.
Dionne Palermo,
Acting Director, System Oversight Division, Aircraft Certification
Service.
[FR Doc. 2019-14284 Filed 7-5-19; 8:45 am]
BILLING CODE 4910-13-P
