(a) EFFECTIVE DATE
This AD is effective December 17, 2019.
(b) AFFECTED ADS
None.
(c) APPLICABILITY
This AD applies to Bombardier, Inc., airplanes, certificated in any
category, as identified in paragraphs (c)(1) through (4) of this AD.
(1) Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, serial
numbers 7003 and subsequent.
(2) Model CL-600-2C10 (Regional Jet Series 700, 701 & 702) airplanes,
serial numbers 10002 through 10999 inclusive.
(3) Model CL-600-2D15 (Regional Jet Series 705) and CL-600-2D24 (Regional
Jet Series 900) airplanes, serial numbers 15001 through 15990 inclu-
sive.
(4) Model CL-600-2E25 (Regional Jet Series 1000) airplanes, serial numbers
19001 through 19990 inclusive.
(d) SUBJECT
Air Transport Association (ATA) of America Code 27, Flight controls.
(e) REASON
This AD was prompted by reports of power control unit (PCU) rod end
fractures due to pitting corrosion. The FAA is issuing this AD to
address this condition, which, if not detected and corrected, could
lead to a disconnect between the PCU and the control surface,
resulting in potential loss of the control surface function or
inadequate flutter suppression.
(f) COMPLIANCE
Comply with this AD within the compliance times specified, unless
already done.
(g) MAINTENANCE OR INSPECTION PROGRAM REVISION FOR CERTAIN AIRPLANES OPER-
ATING UNDER THE LOW UTILIZATION MAINTENANCE PROGRAM (LUMP)
(1) For Model CL-600-2B19 airplanes operating under the LUMP: Within 90
days after the effective date of this AD, revise the existing
maintenance or inspection program, as applicable, to incorporate the
information specified in paragraphs (g)(1)(i) through (vi) of this AD.
The initial compliance time for accomplishing the actions is within 90
days after the effective date of this AD; or within the applicable
interval specified in Section 3-Systems and Powerplant Program, of the
Bombardier Model CL-600- 2B19 Series 100/200/440 Maintenance Planning
Manual, Low Utilization Maintenance Program (MRLUMP-001), CSP A-054
-009, Revision 37, dated July 10, 2018 ("MRLUMP-001, Revision 37"); or
Section 3-Systems and Powerplant Program, of the Bombardier Model CL
-600-2B19 Series 100/200/440 Maintenance Planning Manual, Low
Utilization Maintenance Program (MRLUMP-002), CSP A-054-060, Revision
37, dated July 10, 2018 ("MRLUMP-002, Revision 37"), after the
effective date of this AD; whichever occurs later.
(i) Task 27-20-00-13, Operational Check of the Rudder Control System, of
MRLUMP-001, Revision 37.
(ii) Task 27-23-01-01, Detailed Inspection of the Rudder PCU Rod End
Spherical Ball, of MRLUMP-001, Revision 37.
(iii) Task 27-31-00-05, Operational Check of the Elevator Control System,
of MRLUMP-001, Revision 37.
(iv) Task 27-20-00-13, Operational Test of the Rudder Control System, of
MRLUMP-002, Revision 37.
(v) Task 27-23-01-01, Detailed Inspection of the Rudder PCU Rod End
Spherical Ball, of MRLUMP-002, Revision 37.
(vi) Task 27-31-00-05, Operational Test of the Elevator Control System, of
MRLUMP-002, Revision 37.
(2) For Model CL-600-2C10 airplanes having serial numbers 10004, 10040,
10043, 10052, 10100, 10164, 10183, 10187, 10204, 10206, 10217, 10247,
10289, 10332, and 10343 operating under the LUMP; and Model CL-600
-2D15 and CL-600-2D24 airplanes having serial numbers 15158, 15278,
and 15370 operating under the LUMP: Within 30 days after the effective
date of this AD, revise the existing maintenance or inspection
program, as applicable, to incorporate the information specified in
paragraphs (g)(2)(i) through (iii) of this AD. The initial compliance
time for accomplishing the actions is within 30 days after the
effective date of this AD; or within the applicable interval specified
in Section 3-Systems/Power Plant Tasks, of the Bombardier Model CL
-600-2C10, CL-600-2D15, CL-600-2D24, Series 700/705/900 Maintenance
Planning Manual, Low Utilization Maintenance Program (LUMP), CSP BC
-116, Revision 15, dated May 25, 2017 ("LUMP, Revision 15"), after the
effective date of this AD; whichever occurs later.
(i) Task 27-20-00-106, Operational Test of the Rudder PCUs (Duplicate CMR
27-20-00-106), of LUMP, Revision 15.
(ii) Task 273000-207, Operational Test of the Elevator Power-Control Units
(PCUs), of LUMP, Revision 15.
(iii) Task 273000-215, Detailed Inspection of the Elevator PCU Rod End
Spherical Ball, of LUMP, Revision 15.
(h) MAINTENANCE OR INSPECTION PROGRAM REVISION FOR CERTAIN AIRPLANES THAT
ARE NOT OPERATING UNDER THE LUMP
For Model CL-600-2C10, CL-600-2D15, CL-600-2D24, and CL-600-2E25
airplanes that are not operating under the LUMP: Within 30 days after
the effective date of this AD, revise the existing maintenance or
inspection program, as applicable, to incorporate the information
specified in task 273000-207, Operational Check of each Elevator PCU,
of Subject 1-27, of Section 1, Systems and Powerplant Program, Volume
1 of Part 1, Maintenance Review Board Report, Revision 18, dated July
25, 2018, of the Bombardier Model CL-600-2C10, CL-600-2D15, CL-600
-2D24, and CL-600-2E25 Series 700/705/900/1000 Maintenance
Requirements Manual, CSP B-053, ("CSP B-053, Revision 18"). The
initial compliance time for accomplishing the actions is within 30
days after the effective date of this AD; or within the applicable
interval specified in CSP B-053, Revision 18, after the effective date
of this AD; whichever occurs later.
(i) NO ALTERNATIVE ACTIONS OR INTERVALS
After the existing maintenance or inspection program has been revised
as required by paragraph (g) or (h) of this AD, no alternative actions
(e.g., inspections) or intervals may be used unless the actions and
intervals are approved as an alternative method of compliance (AMOC)
in accordance with the procedures specified in paragraph (n)(1) of
this AD.
(j) FIRST INSPECTION OF THE ELEVATOR PCU ROD END FOR CERTAIN AIRPLANES
For Model CL-600-2C10, CL-600-2D15, CL-600-2D24, and CL-600-2E25
airplanes that are not operating under the LUMP, and that have
accumulated less than 6,000 total flight hours as of the effective
date of this AD: Within the compliance time specified in figure 1 to
paragraph (j) of this AD, perform a detailed inspection for pitting
and corrosion of the left and right rod ends of the elevator PCUs and
to make sure that the spherical ball and inner race of the rod ends
move freely, and do all applicable corrective actions, in accordance
with paragraph 2.B. of the Accomplishment Instructions of Bombardier
Service Bulletin 670BA-27-074, dated June 22, 2017. Do all applicable
corrective actions before further flight.
FIGURE 1 TO PARAGRAPH (J) – FIRST INSPECTION COMPLIANCE TIMES
______________________________________________________________________
TOTAL FLIGHT HOURS AS OF THE
EFFECTIVE DATE OF THIS AD COMPLIANCE TIME
______________________________________________________________________
Less than 800 total flight hours After the airplane accumulates
1,000 total flight hours, but
not to exceed 1,400 total flight
hours
800 or more total flight hours Within 880 flight hours from the
and less than 6,000 total flight effective date of this AD
hours
______________________________________________________________________
(k) SECOND INSPECTION OF THE ELEVATOR PCU ROD END FOR CERTAIN AIRPLANES
(1) For Model CL-600-2C10, CL-600-2D15, CL-600-2D24, and CL-600-2E25 air-
planes that are not operating under the LUMP, and that have
accumulated 2,600 total flight hours or less at the time of the
inspection required by paragraph (j) of this AD: Before the
accumulation of 3,400 total flight hours, perform an additional
detailed inspection for pitting and corrosion of the left and right
rod ends of the elevator PCUs and to make sure that the spherical ball
and inner race of the rod ends move freely, and do all applicable
corrective actions, in accordance with paragraph 2.B. of the
Accomplishment Instructions of Bombardier Service Bulletin 670BA-27
-074, dated June 22, 2017. Do all applicable corrective actions before
further flight.
(2) For airplanes that have accumulated more than 2,600 total flight hours
at the time of the inspection required by paragraph (j) of this AD: A
second inspection is not required.
(l) NO INSPECTION FOR CERTAIN AIRPLANES
The requirements of paragraphs (j) and (k) of this AD are not
applicable to airplanes that have accumulated 6,000 total flight hours
or more as of the effective date of this AD.
(m) SERVICE INFORMATION PROHIBITION FOR CERTAIN AIRPLANES
For all Model CL-600-2B19 airplanes: After 30 days from the effective
date of this AD, this AD prohibits the use of the aircraft maintenance
manual (AMM) tasks specified in paragraphs (m)(1) through (3) of this
AD.
(1) Task 10-12-00-550-804 Short-Term Storage Return-to-Service Maintenance
Checks, of the Bombardier CL-600-2B19 Series 100/200/440 AMM, CSP
A-001, Revision 55, dated April 10, 2017, or earlier revisions of this
task.
(2) Task 27-23-01-220-801, Detailed Inspection of the Rudder PCU Rod End
Spherical Ball, of the Bombardier CL-600-2B19 Series 100/200/440 AMM,
CSP A-001, Revision 54, dated October 10, 2016, or earlier revisions
of this task.
(3) Task 27-33-01-220-801, Detailed Inspection of the Elevator PCU Rod End
Spherical Ball, of the Bombardier CL-600-2B19 Series 100/200/440 AMM,
CSP A-001, Revision 54, dated October 10, 2016, or earlier revisions
of this task.
(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
corrective actions from a manufacturer, the action must be
accomplished using a method approved by the Manager, New York ACO
Branch, FAA; or Transport Canada Civil Aviation (TCCA); or Bombardier,
Inc.'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)
Canadian AD CF-2018-29, dated November 2, 2018, for related informa-
tion, 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-2019-0436.
(2) For more information about this AD, contact Darren Gassetto, Aerospace
Engineer, Mechanical Systems and Admin Services Section, FAA, New York
ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; tele-
phone 516-228-7323; fax 516-794-5531; email 9-avs-nyaco-cos@faa.gov.
(p) 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 this AD specifies otherwise.
(i) Bombardier Service Bulletin 670BA-27-074, dated June 22, 2017.
(ii) Section 3-Systems and Powerplant Program, of the Bombardier Model CL-
600-2B19 Series 100/200/440 Maintenance Planning Manual, Low Utiliza-
tion Maintenance Program (MRLUMP-001), CSP A-054-009, Revision 37,
dated July 10, 2018.
(A) Task 27-20-00-13, Operational Check of the Rudder Control System.
(B) Task 27-23-01-01, Detailed Inspection of the Rudder PCU Rod End
Spherical Ball.
(C) Task 27-31-00-05, Operational Check of the Elevator Control System.
(iii) Section 3-Systems and Powerplant Program, of the Bombardier Model
CL-600-2B19 Series 100/200/440 Maintenance Planning Manual, Low
Utilization Maintenance Program (MRLUMP-002), CSP A-054-060 Revision
37, dated July 10, 2018.
(A) Task 27-20-00-13, Operational Test of the Rudder Control System.
(B) Task 27-23-01-01, Detailed Inspection of the Rudder PCU Rod End
Spherical Ball.
(C) Task 27-31-00-05, Operational Test of the Elevator Control System.
(iv) Section 3-Systems/Power Plant Tasks, of the Bombardier Model CL-600-
2C10, CL-600-2D15, CL-600-2D24, Series 700/705/900 Maintenance Plann-
ing Manual, Low Utilization Maintenance Program (LUMP), CSP BC-116,
Revision 15, dated May 25, 2017.
(A) Task 27-20-00-106, Operational Test of the Rudder PCUs (Duplicate CMR
27-20-00-106).
(B) Task 273000-207, Operational Test of the Elevator Power-Control Units
(PCUs).
(C) Task 273000-215, Detailed Inspection of the Elevator PCU Rod End
Spherical Ball.
(v) Task 273000-207, Operational Check of each Elevator PCU, of Subject
1-27, of Section 1, Systems and Powerplant Program, Volume 1 of Part
1, Maintenance Review Board Report, Revision 18, dated July 25, 2018,
of the Bombardier Model CL-600-2C10, CL-600-2D15, CL-600-2D24, and
CL-600-2E25 Series 700/705/900/1000 Maintenance Requirements Manual,
CSP B-053.
(3) For service information identified in this AD, contact Bombardier,
Inc., 400 Cote-Vertu Road West, Dorval, Quebec H4S 1Y9, Canada; Wide-
body Customer Response Center North America toll-free telephone 1-866-
538-1247 or direct-dial telephone 1-514-855-2999; fax 514-855-7401;
email ac.yul@aero.bombardier.com; internet http://www.bombardier.com.
(4) 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.
(5) You may view this service information that is incorporated by
reference at the National Archives and Records Administration (NARA).
For information on the availability of this material at NARA, email
fedreg.legal@nara.gov, or go to: https://www.archives.gov/federal-
register/cfr/ibr-locations.html.
Issued in Des Moines, Washington, on September 19, 2019. Michael Kaszycki,
Acting Director, System Oversight Division, Aircraft Certification Service
FOR FURTHER INFORMATION CONTACT: Darren Gassetto, Aerospace Engineer,
Mechanical Systems and Admin Services Section, FAA, New York ACO Branch,
1600 Stewart Ave., Suite 410, Westbury, NY 11590; telephone 516-228-7323;
fax 516-794-5531; email 9-avs-nyaco-cos@faa.gov.
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2019-0436; Product Identifier 2019-NM-014-AD; Amendment
39-19744; AD 2019-19-08]
RIN 2120-AA64
Airworthiness Directives; Bombardier, Inc., Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: The FAA is adopting a new airworthiness directive (AD)
for
certain Bombardier, Inc., Model CL-600-2B19 (Regional Jet Series 100 &
440), CL-600-2C10 (Regional Jet Series 700, 701 & 702), CL-600-2D15
(Regional Jet Series 705), CL-600-2D24 (Regional Jet Series 900), and
CL-600-2E25 (Regional Jet Series 1000) airplanes. This AD was prompted
by reports of power control unit (PCU) rod end fractures due to pitting
corrosion. This AD requires revising the existing maintenance or
inspection program, as applicable, to incorporate new maintenance
tasks. This AD also requires detailed inspections of the elevator PCU
rod ends and applicable corrective actions. This AD also prohibits
using certain aircraft maintenance manual tasks. The FAA is issuing
this AD to address the unsafe condition on these products.
DATES: This AD is effective December 17, 2019.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of December 17,
2019.
ADDRESSES: For service information identified in this final rule,
contact Bombardier, Inc., 400 Cote-Vertu Road West, Dorval,
Quebec H4S 1Y9, Canada; Widebody Customer Response Center North
America toll-free telephone 1-866-538-1247 or direct-dial telephone 1-
514-855-2999; fax 514-855-7401; email ac.yul@aero.bombardier.com;
internet http://www.bombardier.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-2019-0436.
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-
0436; or in person at Docket Operations between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays. The AD docket contains
this final rule, the regulatory evaluation, any comments received, and
other information. The address for Docket Operations is 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: Darren Gassetto, Aerospace Engineer,
Mechanical Systems and Admin 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:
Discussion
Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian AD CF-2018-29, dated November
2, 2018 (referred to after this as the Mandatory Continuing
Airworthiness Information, or ``the MCAI''), to correct an unsafe
condition for certain Bombardier, Inc., Model CL-600-2B19 (Regional Jet
Series 100 & 440), CL-600-2C10 (Regional Jet Series 700, 701 & 702),
CL-600-2D15 (Regional Jet Series 705), CL-600-2D24 (Regional Jet Series
900), and 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-2019-0436.
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to certain Bombardier,
Inc., Model CL-600-2B19 (Regional Jet Series 100 & 440), CL-600-2C10
(Regional Jet Series 700, 701 & 702), CL-600-2D15 (Regional Jet Series
705), CL-600-2D24 (Regional Jet Series 900), and CL-600-2E25 (Regional
Jet Series 1000) airplanes. The NPRM published in the Federal Register
on June 21, 2019 (84 FR 29108). The NPRM was prompted by reports of PCU
rod end fractures due to pitting corrosion. The NPRM proposed to
require revising the existing maintenance or inspection program, as
applicable, to incorporate new maintenance tasks. The NPRM also
proposed to require detailed inspections of the elevator PCU rod ends
and applicable corrective actions, and prohibit using certain aircraft
maintenance manual tasks.
The FAA is issuing this AD to address PCU rod end fractures due to
pitting corrosion, which, if not detected and corrected, could lead to
a disconnect between the PCU and the control surface, resulting in
potential loss of the control surface function or inadequate flutter
suppression. See the MCAI for additional background information.
Comments
The FAA gave the public the opportunity to participate in
developing this final rule. The FAA has considered the comment
received. The commenter, Patrick Imperatrice, stated that he supports
the NPRM.
Conclusion
The FAA reviewed the relevant data, considered the comment
received, and determined that air safety and the public interest
require adopting this final rule as proposed, except for minor
editorial changes. The FAA has determined that these minor changes:
Are consistent with the intent that was proposed in the
NPRM for addressing 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
Bombardier has issued the following service information.
Bombardier Service Bulletin 670BA-27-074, dated June 22, 2017. This
service information describes procedures for detailed inspections for
pitting and corrosion of the left and right rod ends of the elevator
PCUs and to make sure that the spherical ball and inner race of the rod
ends move freely, and applicable corrective actions. Corrective actions
include installing a new PCU.
The following tasks describe operational checks of the elevator and
rudder control systems, and a detailed inspection of the rudder PCU rod
end spherical ball.
Task 27-20-00-13, Operational Check of the Rudder Control
System of Section 3--Systems and Powerplant Program, of the Bombardier
Model CL-600-2B19 Series 100/200/440 Maintenance Planning Manual, Low
Utilization Maintenance Program (MRLUMP-001), CSP A-054-009, Revision
37, dated July 10, 2018 (``MRLUMP-001, Revision 37'').
Task 27-23-01-01, Detailed Inspection of the Rudder PCU
Rod End Spherical Ball, of MRLUMP-001, Revision 37.
Task 27-31-00-05, Operational Check of the Elevator
Control System, of MRLUMP-001, Revision 37.
The following tasks describe operational tests of the elevator and
rudder control systems, and a detailed inspection of the rudder PCU rod
end spherical ball.
Task 27-20-00-13, Operational Test of the Rudder Control
System, of Section 3--Systems and Powerplant Program, of the Bombardier
Model CL-600-2B19 Series 100/200/440 Maintenance Planning Manual, Low
Utilization Maintenance Program (MRLUMP-002), CSP A-054-060, Revision
37, dated July 10, 2018 (``MRLUMP-002, Revision 37'').
Task 27-23-01-01, Detailed Inspection of the Rudder PCU
Rod End Spherical Ball, of MRLUMP-002, Revision 37.
Task 27-31-00-05, Operational Test of the Elevator Control
System, of MRLUMP-002, Revision 37.
The following tasks describe operational tests of the elevator and
rudder PCUs, and a detailed inspection of the elevator PCU rod end
spherical ball.
Task 27-20-00-106, Operational Test of the Rudder PCUs
(Duplicate CMR 27-20-00-106), of Section 3--Systems/Power Plant Tasks,
of the Bombardier Model CL-600-2C10, CL-600-2D15, CL-600-2D24, Series
700/705/900 Maintenance Planning Manual, Low Utilization Maintenance
Program (LUMP), CSP BC-116, Revision 15, dated May 25, 2017 (``LUMP,
Revision 15'').
Task 273000-207, Operational Test of the Elevator Power-
Control Units (PCUs), of LUMP, Revision 15.
Task 273000-215, Detailed Inspection of the Elevator PCU
Rod End Spherical Ball, of LUMP, Revision 15.
The following task describes an operational check of each elevator
PCU.
Task 273000-207, Operational Check of each Elevator PCU,
of Subject 1-27, of Section 1, Systems and Powerplant Program, Volume
1
of Part 1, Maintenance Review Board Report, Revision 18, dated July 25,
2018, of the Bombardier Model CL-600-2C10, CL-600-2D15, CL-600-2D24,
and CL-600-2E25 Series 700/705/900/1000 Maintenance Requirements
Manual, CSP B-053.
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
The FAA estimates that this AD affects 1,008 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:
Estimated Costs for Required Actions *
Labor cost
|
Parts cost
|
Cost per
product
|
Cost on
U.S. operators
|
9 work-hours x $85 per hour =
$765 |
$0
|
$765
|
$771,120
|
* Table does not include estimated
costs for revising the maintenance or
inspection program.
The FAA has determined that revising the existing maintenance or
inspection program takes an average of 90 work-hours per operator,
although the FAA recognizes that this number may vary from operator to
operator. In the past, the FAA has estimated that this action takes 1
work-hour per airplane. Since operators incorporate maintenance or
inspection program changes for their affected fleet(s), the FAA has
determined that a per-operator estimate is more accurate than a per-
airplane estimate. Therefore, the FAA estimates the total cost per
operator to be $7,650 (90 work-hours x $85 per work-hour).
The FAA has received no definitive data that would enable the
agency to provide cost estimates for the on-condition actions specified
in this AD.
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 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
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) 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.
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.
Sec. 39.13 [Amended]
2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive (AD):
|