(a) COMMENTS DUE DATE
The FAA must receive comments on this airworthiness directive (AD) by
June 4, 2021.
(b) AFFECTED ADS
None.
(c) APPLICABILITY
This AD applies to the MHI RJ Aviation ULC (type certificate
previously held by Bombardier, Inc.) airplanes, certificated in any
category, specified in paragraphs (c)(1) through (3) of this AD.
(1) Model CL-600-2C10 (Regional Jet Series 700, 701 & 702) and Model CL-
600-2C11 (Regional Jet Series 550) airplanes, serial numbers 10002 and
subsequent.
(2) Model CL-600-2D15 (Regional Jet Series 705) airplanes and CL-600-2D24
(Regional Jet Series 900) airplanes, serial numbers 15001 and
subsequent.
(3) Model CL-600-2E25 (Regional Jet Series 1000) airplanes, serial numbers
19001 and subsequent.
(d) SUBJECT
Air Transport Association (ATA) of America Code 32, Landing Gear.
(e) REASON
This AD was prompted by reports and a design review indicating that
there could be corrosion on the main landing gear (MLG) outer cylinder
assemblies at the interface with the gland nut on the shock strut
installation and on the forward and aft trunnion pins in the MLG
dressed shock strut assemblies; primer was not correctly applied at
the gland nut thread relief groove and chamfer areas on certain MLG
outer cylinders during production; and corrosion-inhibiting compound
(CIC) could have inadvertently been removed from certain MLG forward
and aft trunnion pins and grease adapter assemblies during
maintenance. The FAA is issuing this AD to address undetected
corrosion on the MLG forward and aft trunnion pins, and the gland nut
interface on certain MLG outer cylinders, which could result in an MLG
collapse.
(f) COMPLIANCE
Comply with this AD within the compliance times specified, unless
already done.
(g) INSPECTION AND APPLICATION OF CORROSION PROTECTION FOR MLG OUTER CYL-
INDER ASSEMBLIES AND CERTAIN MLG DRESSED SHOCK STRUT ASSEMBLIES
For airplanes identified in paragraphs (c)(1) and (2) of this AD with
MLG outer cylinder assemblies and MLG dressed shock strut assemblies
having part numbers and serial numbers specified in the effectivity
tables in Section 1.A.(1) of Bombardier Service Bulletin 670BA-32-024,
Revision C, dated February 11, 2015 (Bombardier Service Bulletin
670BA-32-024, Revision C): At the applicable time specified in
paragraph (g)(1) or (2) of this AD, do a detailed visual inspection
for corrosion and all other required actions specified in, and in
accordance with, Section 2., Part A, of the Accomplishment
Instructions of Bombardier Service Bulletin 670BA-32-024, Revision C.
(1) For MLG assemblies that have accumulated 12,500 total flight hours or
less, and have been in service for 72 months or less from entry into
service or the last overhaul date: Within 6,500 flight hours or 36
months, whichever comes first, after the effective date of this AD.
(2) For MLG assemblies that have accumulated more than 12,500 total flight
hours, or have been in service for more than 72 months from entry into
service or the last overhaul date: Within 3,500 flight hours or 24
months, whichever occurs first, after the effective date of this AD.
(h) INSPECTION OF CERTAIN OTHER MLG DRESSED SHOCK STRUT ASSEMBLIES AND
CORRECTIVE ACTION
For airplanes identified in paragraphs (c)(1) and (2) of this AD,
equipped with MLG dressed shock strut assemblies having part numbers
(P/Ns) 49000-25 through 49000-46 and P/Ns 49050-15 through 49050-22,
on which the MLG active dynamic seal has been replaced with the spare
dynamic seal as specified in Bombardier CRJ700/705/900/1000 Aircraft
Maintenance Manual (AMM), CSP B-001, Task 32-11-10-960-802, Revision
37, dated November 25, 2011, or earlier: At the applicable time
specified in paragraph (h)(1) or (2) of this AD, do a detailed visual
inspection of the MLG dressed shock strut assemblies for corrosion,
and all applicable corrective actions, in accordance with Section 2.,
Part B, of the Accomplishment Instructions of Bombardier Service
Bulletin 670BA-32-024, Revision C.
(1) For MLG assemblies that have accumulated 12,500 total flight hours or
less, and have been in service for 72 months or less from entry into
service or the last overhaul date: Within 6,500 flight hours or 36
months, whichever comes first, after the effective date of this AD.
(2) For MLG assemblies that have accumulated more than 12,500 total flight
hours, or have been in service for more than 72 months from entry into
service or the last overhaul date: Within 3,500 flight hours or 24
months, whichever occurs first, after the effective date of this AD.
(i) INSPECTION OF MLG OUTER CYLINDER AT THE GLAND NUT THREADS, THREAD RE-
LIEF GROOVE, AND CHAMFER AND CORRECTIVE ACTION
For airplanes identified in paragraphs (c)(1) through (3) of this AD
equipped with MLG outer cylinder assemblies having part numbers and
serial numbers specified in Section 1.A., Effectivity, of Bombardier
Service Bulletin 670BA-32-052, dated February 9, 2015: Within 6,500
flight hours or 36 months, whichever occurs first after the effective
date of this AD: Do a detailed visual inspection, of the MLG shock
strut outer cylinder assemblies and do all other required actions
specified in, and, in accordance with Section 2. of the Accomplishment
Instructions of Bombardier Service Bulletin 670BA-32-052, dated
February 9, 2015.
(j) INSPECTION OF CERTAIN MLG FORWARD AND AFT TRUNNION PINS AND CORRECTIVE
ACTION
For airplanes identified in paragraphs (c)(1) through (3) of this AD
equipped with MLG forward and aft trunnion pins and grease adapter
assemblies having part numbers and serial numbers specified in Section
1.A., Effectivity, of Bombardier Service Bulletin 670BA-32-034,
Revision B, dated December 21, 2018: At the applicable time specified
in paragraph (j)(1) or (2) of this AD, do a detailed visual inspection
of the MLG forward and aft trunnion pins and do all applicable
corrective actions, in accordance with Section 2.B. and paragraphs
2.C.(6) and (8) of the Accomplishment Instructions of Bombardier
Service Bulletin 670BA-32-034, Revision B, dated December 21, 2018.
Note 1 to paragraph (j): The corrective action is applicable only to MLG
forward and aft trunnion pins having P/Ns 49101-9, -11, and -13 reworked
from P/Ns 49101-1, -5, and -7, as specified in the procedures in Goodrich
Service Bulletin 49101-32-47, any revision. The corrective action is not
applicable to MLG forward and aft trunnion pins having P/Ns 49101-9, -11,
and -13 that were installed as original equipment or purchased from
Goodrich Landing Gear.
(1) For MLG forward and aft trunnion pins and grease adapter assemblies
that have not had the procedures specified in Goodrich Service
Bulletin 49101-32-47, any revision, incorporated, at the applicable
time specified in paragraph (j)(1)(i) or (ii) of this AD.
(i) For MLG forward and aft trunnion pins that have accumulated 10,000
total flight hours or less, and have been in service 60 months or less
from the entry into service or last overhaul date: Within 6,500 flight
hours or 36 months, whichever occurs first, after the effective date
of this AD.
(ii) For MLG forward and aft trunnion pins that have accumulated more than
10,000 total flight hours, or have been in service for more than 60
months from entry into service or last overhaul date: Within 3,000
flight hours or 24 months, whichever occurs first, after the
effective date of this AD.
(2) For MLG forward and aft trunnion pins that have had the procedures
specified in Goodrich Service Bulletin 49101-32-47, any revision,
incorporated: Within 6,500 flight hours or 36 months, whichever occurs
first, after the effective date of this AD.
(k) INSPECTION OF CERTAIN OTHER MLG TRUNNION PINS HAVING P/NS 49101-9,
49101-11, AND 49101-13, MAINTAINED USING CERTAIN MAINTENANCE INSTRUC-
TIONS
For airplanes identified in paragraphs (c)(1) through (3) of this AD
equipped with MLG forward and aft trunnion pins having P/Ns 49101-9,
49101-11, and 49101-13 that were maintained in accordance with the
tasks identified in paragraphs (k)(1) through (4) of this AD: Within
6,500 flight hours or 36 months after the effective date of this AD,
whichever occurs first, do a detailed visual inspection of the MLG
forward and aft trunnion pins, and do all applicable corrective
actions, in accordance with Section 2. of the Accomplishment
Instructions of Bombardier Service Bulletin 670BA-32-039, dated
February 29, 2012.
(1) Bombardier CRJ700/705/900/1000 AMM, CSP B-001, Task 32-11-05-400-801
A01, Revision 31, dated March 20, 2010, or earlier.
(2) Bombardier CRJ700/705/900/1000 AMM, CSP B-001, Task 32-11-05-400-801
A02, Revision 34, dated November 20, 2010, or earlier.
(3) Bombardier CRJ700/705/900/1000 AMM, CSP B-001, Task 32-11-05-400-804
A01, Revision 35, dated March 20, 2011, or earlier.
(4) Bombardier CRJ700/705/900/1000 AMM, CSP B-001, Task 32-11-05-400-805
A01, Revision 35, dated March 20, 2011, or earlier.
Note 2 to paragraph (k): The corrective action described in this paragraph
is not applicable to MLG forward and aft trunnion pins having P/Ns 49101
-9, -11, and -13 reworked from P/Ns 49101-1, -5, and -7 as specified in
the procedures in Goodrich SB 49101-32-47, any revision. The corrective
action described in this paragraph is applicable to MLG forward and aft
trunnion pins having P/Ns 49101-9, -11, and -13 installed as original
equipment or purchased from Goodrich Landing Gear.
(l) CREDIT FOR PREVIOUS ACTIONS
(1) This paragraph provides credit for actions required by paragraph (g)
of this AD, if those actions were performed before the effective date
of this AD using Section 2., Part A, of the Accomplishment
Instructions of Bombardier Service Bulletin 670BA-32-024, Revision B,
dated December 19, 2012.
(2) This paragraph provides credit for actions required by paragraph (h)
of this AD if those actions were performed before the effective date
of this AD using Section 2., Part B, of the Accomplishment
Instructions of Bombardier Service Bulletin 670BA-32-024, Revision B,
dated December 19, 2012; or Bombardier CRJ700/705/900/1000 Aircraft
Maintenance Manual (AMM), CSP B-001, Task 32-11-10-960-802, Revision
38, dated March 25, 2012.
(3) This paragraph provides credit for actions required by paragraph (j)
of this AD if those actions were performed before the effective date
of this AD using Section 2.B. and paragraphs 2.C.(6) and (8) of the
Accomplishment Instructions of Bombardier Service Bulletin 670BA-32
-034, dated February 29, 2012; or Revision A, dated August 17, 2012.
(4) This paragraph provides credit for actions required by paragraph (k)
of this AD, if those actions were performed before the effective date
of this AD using the service information specified in paragraphs
(l)(4)(i) through (iv) of this AD.
(i) Bombardier CRJ700/900/1000 Aircraft Maintenance Manual (AMM), CSP B-
001, Task 32-11-05-400-801 A01, Revision 38, dated March 25, 2012.
(ii) Bombardier CRJ700/900/1000 AMM, CSP B-001, Task 32-11-05-400-801 A02,
Revision 38, dated March 25, 2012.
(iii) Bombardier CRJ700/900/1000 AMM, CSP B-001, Task 32-11-05-400-804
A01, Revision 37, dated November 25, 2011, for actions specified in
Section 2.B.(1) of the Accomplishment Instructions of Bombardier
Service Bulletin 670BA-32-039, dated February 29, 2012.
(iv) Bombardier CRJ700/900/1000 AMM, CSP B-001, Task 32-11-05-400-805 A01,
Revision 37, dated November 25, 2011, for actions specified in
Section 2.B.(2) of the Accomplishment Instructions of Bombardier
Service Bulletin 670BA-32-039, dated February 29, 2012.
(m) NO REQUIREMENT FOR RETURN OF PARTS
Although certain service information referenced in this AD specifies
to return damaged MLG trunnion pins to Goodrich Landing Gear, this AD
does not include that requirement.
(n) OTHER FAA AD PROVISIONS
The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, New York 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 ATTN: Program Manager, Continuing Operational Safety, FAA, New
York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 516-228-7300; fax 516-794-5531. 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.
(2) Contacting the Manufacturer: For any requirement in this AD to obtain
instructions from a manufacturer, the instructions must be
accomplished using a method approved by the Manager, New York ACO
Branch, FAA; or Transport Canada Civil Aviation (TCCA); or MHI RJ
Aviation ULC's TCCA Design Approval Organization (DAO). If approved by
the DAO, the approval must include the DAO-authorized signature.
(o) RELATED INFORMATION
(1) Refer to Mandatory Continuing Airworthiness Information (MCAI) TCCA AD
CF-2019-17R1, dated June 18, 2020, for related information. This MCAI
may be found in the AD docket on the internet at
https://www.regulations.gov by searching for and locating Docket No.
FAA-2021-0309.
(2) For more information about this AD, contact Darren Gassetto, Aerospace
Engineer, Mechanical Systems and Administrative Services Section, FAA,
New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY
11590; telephone 516-228-7323; fax 516-794-5531; email 9-avs-nyaco-cos
@faa.gov.
(3) For Bombardier service information identified in this AD, contact MHI
RJ Aviation ULC, 12655 Henri-Fabre Blvd., Mirabel, Quebec J7N 1E1
Canada; Widebody Customer Response Center North America toll-free tele
-phone +1-844-272-2720 or direct-dial telephone +1-514-855-8500; fax
+1-514-855-8501; email thd.crj@mhirj.com; internet https://eservices.
aero.bombardier.com. You may view this service information at the FAA,
Airworthiness Products Section, Operational Safety Branch, 2200 South
216th St., Des Moines, WA. For information on the availability of this
material at the FAA, call 206-231-3195.
Issued on April 13, 2021. Lance T. Gant, Director, Compliance & Airworthi-
ness Division, Aircraft Certification Service.
DATES: The FAA must receive comments on this proposed AD by June 4, 2021.
|
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0309; Project Identifier MCAI-2020-00918-T]
RIN 2120-AA64
Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate
Previously Held by Bombardier, Inc.) Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
-----------------------------------------------------------------------
SUMMARY: The FAA proposes to adopt a new airworthiness directive
(AD)
for MHI RJ Aviation ULC Model CL-600-2C10 (Regional Jet Series 700, 701
& 702), CL-600-2C11 (Regional Jet Series 550), CL-600-2D15 (Regional
Jet Series 705), CL-600-2D24 (Regional Jet Series 900), and CL-600-2E25
(Regional Jet Series 1000) airplanes. This proposed AD was prompted by
reports and a design review indicating that there could be possible
corrosion on the main landing gear (MLG) outer cylinder at the
interface with the gland nut on the shock strut installation and on the
forward and aft trunnion pins in the MLG dressed shock strut assembly.
This proposed AD would require detailed inspections for corrosion on
the MLG outer cylinder assemblies, certain MLG dressed shock strut
assemblies, and the MLG outer cylinder at the gland nut threads, thread
relief groove, and chamfer; a detailed inspection for the presence of
corrosion-inhibiting compound (CIC) on the MLG forward and aft trunnion
pins and grease adapter assemblies; applicable corrective actions;
application of primer, paint, and CIC as applicable; re-identification
of certain part numbers; and marking of the MOD STATUS field of the
nameplate of certain 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 June
4,
2021.
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 Bombardier service information identified in this NPRM, contact
MHI RJ Aviation ULC, 12655 Henri-Fabre Blvd., Mirabel, Quebec
J7N 1E1 Canada; Widebody Customer Response Center North America toll-
free telephone +1-844-272-2720 or direct-dial telephone +1-514-855-
8500; fax +1-514-855-8501; email thd.crj@mhirj.com; internet https://
eservices.aero.bombardier.com.
You may view this service information at the FAA, Airworthiness
Products Section, Operational Safety Branch, 2200 South 216th St., Des
Moines, WA. For information on the availability of this material at the
FAA, call 206-231-3195.
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-2021-
0309; 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, any comments received, and other information. The street
address for Docket Operations is listed above.
FOR FURTHER INFORMATION CONTACT: Darren Gassetto, Aerospace Engineer,
Mechanical Systems and Administrative Services Section, FAA, New York
ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 516-228-7323; fax 516-794-5531; email 9-avs-nyaco-cos@faa.gov.
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 ADDRESSES. Include "Docket No. FAA-2021-0309; Project Identifier
MCAI-2020-00918-T" at the beginning of your comments. The most helpful
comments reference a specific portion of the proposal, 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
the proposal 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
https://www.regulations.gov, including any personal information you
provide. The agency will also post a report summarizing each
substantive verbal contact received about this proposed AD.
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 NPRM 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 NPRM, 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 NPRM. Submissions containing CBI should be sent to
Darren Gassetto, Aerospace Engineer, Mechanical Systems and
Administrative Services Section, FAA, New York ACO Branch, 1600 Stewart
Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7323; fax 516-
794-5531; email 9-avs-nyaco-cos@faa.gov. Any commentary that the FAA
receives which is not specifically designated as CBI will be placed in
the public docket for this rulemaking.
Background
Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued TCCA AD CF-2019-17R1, dated June 18,
2020 (referred to after this as the Mandatory Continuing Airworthiness
Information, or "the MCAI"), to correct an unsafe condition for MHI
RJ Aviation ULC (type certificate previously held by Bombardier, Inc.)
Model CL-600-2C10 (Regional Jet Series 700, 701 & 702) airplanes, Model
CL-600-2C11 (Regional Jet Series 550) airplanes, Model CL-600-2D15
(Regional Jet Series 705) airplanes, CL-600-2D24 (Regional Jet Series
900) airplanes, and Model CL-600-2E25 (Regional Jet Series 1000)
airplanes. You may examine the MCAI in the AD docket on the internet at
https://www.regulations.gov by searching for and locating Docket No.
FAA-2021-0309.
This proposed AD was prompted by reports and a design review
indicating that there could be corrosion on the MLG outer cylinder
assemblies and certain MLG dressed shock strut assemblies; primer was
not correctly applied at the gland nut thread relief groove and chamfer
areas on certain MLG outer cylinders during production; and CIC was
inadvertently removed from certain MLG forward and aft trunnion pins
and grease adapter assemblies during maintenance. The FAA is proposing
this AD to address undetected corrosion on the MLG forward and aft
trunnion pins, and the gland nut interface on certain MLG outer
cylinders, which could result in an MLG collapse. See the MCAI for
additional background information.
Related Service Information Under 1 CFR Part 51
Bombardier has issued the following service information.
Service Bulletin 670BA-32-024, Revision C, dated February
11, 2015, which describes procedures for a detailed visual inspection
of the MLG outer cylinder assemblies and dressed shock strut assemblies
for corrosion of the outer cylinder gland nut thread interface and
relief area, and corrective actions including repair and corrosion
removal.
Service Bulletin 670BA-32-034, Revision B, dated December
21, 2018, which describes procedures for a detailed visual inspection
of the inside diameter of the MLG trunnion pins for discrepancies
including the condition of paint and CIC and evidence of corrosion, and
corrective actions including replacement and rework of the trunnion
pins as applicable.
Service Bulletin 670BA-32-039, dated February 29, 2012,
which describes procedures for inspections of the inner diameter of the
MLG forward and aft trunnion pins for discrepancies including corrosion
and inadequate CIC, and corrective actions including application of CIC
and replacement of corroded forward and aft trunnion pins with
serviceable parts.
Service Bulletin 670BA-32-052, dated February 9, 2015,
which describes procedures for a detailed visual inspection of the
gland nut thread relief groove and chamfer surface for the condition of
the protective coating and for discrepancies including evidence of
corrosion or rework at the gland nut thread relief groove and chamfer
surface of the MLG shock strut outer cylinder assemblies, and corrective
actions including corrosion removal.
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
This product has been approved by the aviation authority of another
country, and is approved for operation in the United States. Pursuant
to the FAA's bilateral agreement with the State of Design Authority,
the FAA has been notified of the unsafe condition described in the MCAI
and service information referenced above. The FAA is proposing this AD
because the FAA evaluated all the relevant information and determined
the unsafe condition described previously is likely to exist or develop
on other products of the same type design.
Proposed Requirements of This NPRM
This proposed AD would require accomplishing the actions specified
in the service information described previously, except as discussed
under "Differences Between this Proposed AD and the MCAI or Service
Information."
Differences Between This Proposed AD and the MCAI or Service
Information
Although certain service information specifies to return damaged
MLG trunnion pins to Goodrich Landing Gear, that action would not be
required by this proposed AD.
Costs of Compliance
The FAA estimates that this proposed AD affects 562 airplanes of
U.S. registry. The FAA estimates the following costs to comply with
this proposed AD:
Estimated Costs for Required Actions
| Labor cost |
Parts cost |
Cost per product |
Cost on U.S. operators |
| Up to 100 work-hours x $85 per
hour = Up to $8,500 |
Up to $36,604 |
Up to $45,104 |
Up to $25,348,448 |
According to the manufacturer, some
or all of the costs of this
proposed AD may be covered under warranty, thereby reducing the cost
impact on affected operators. The FAA does not control warranty
coverage for affected operators. As a result, the FAA has included all
known 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.
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
The FAA 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 this proposed
regulation:
(1) Is not a "significant regulatory action" under Executive
Order 12866,
(2) Would not affect intrastate aviation in Alaska, and
(3) Would 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
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]
2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive:
|