(a) EFFECTIVE DATE
This AD is effective August 3, 2017.
(b) AFFECTED ADS
This AD replaces AD 2014-16-02, Amendment 39-17926 (79 FR 46968,
August 12, 2014) ("AD 2014-16-02").
(c) APPLICABILITY
This AD applies to Bombardier, Inc., Model CL-600-1A11 (CL-600) air-
planes, certificated in any category, serial numbers 1004 through 1085
inclusive.
(d) SUBJECT
Air Transport Association (ATA) of America Code 78, Engine Exhaust.
(e) REASON
This AD was prompted by reports of partial deployment of an engine
thrust reverser in flight caused by a failure of the translating
sleeve at the thrust reverser attachment points. We are issuing this
AD to detect and correct cracks of the translating sleeve at the
thrust reverser actuator attachment points, which could result in
deployment or dislodgement of an engine thrust reverser in flight and
subsequent reduced control of the airplane.
(f) COMPLIANCE
Comply with this AD within the compliance times specified, unless al-
ready done.
(g) RETAINED AIRPLANE FLIGHT MANUAL (AFM) REVISION WITH REVISED SERVICE
INFORMATION
This paragraph restates the requirements of paragraph (g) of AD 2014
-16-02, with revised service information. Within 1 calendar day after
August 12, 2014 (the effective date of AD 2014-16-02): Revise the
applicable sections of the AFM to include the information specified in
the temporary revisions (TRs) identified in paragraphs (g)(1) and
(g)(2) of this AD, as applicable. These TRs introduce procedures to
prohibit thrust reverser operation. Operate the airplane according to
the limitations and procedures in the TRs identified in paragraphs
(g)(1) and (g)(2) of this AD, as applicable. The revision required by
paragraph (g) of this AD may be done by inserting copies of the
applicable TRs identified in paragraphs (g)(1) and (g)(2) of this AD
into the AFM. When these TRs have been included in the general
revisions of the AFM, the general revisions may be inserted in the
AFM, provided the relevant information in the general revision is
identical to that in the applicable TRs, and the TRs may be removed.
(1) Canadair TR 600/29, dated June 20, 2014, to the Canadair CL-600-1A11
AFM; or Canadair TR 600/29-2, dated January 18, 2016, to the Canadair
CL-600-1A11 AFM. As of the effective date of this AD, use only
Canadair TR 600/29-2, dated January 18, 2016, to the Canadair CL-600-
1A11 AFM.
(2) Canadair TR 600-1/24, dated June 20, 2014, to the Canadair CL-600-1A11
AFM (Winglets), including Erratum, Publication No. PSP 600-1AFM (US),
TR No. 600-1/24, June 20, 2014 or Canadair TR 600-1/24-2 dated January
18, 2016, to the Canadair CL-600-1A11 AFM (Winglets). As of the effec-
tive date of this AD, use only Canadair TR 600-1/24-2, dated January
18, 2016, to the Canadair CL-600-1A11 AFM (Winglets).
(h) RETAINED REPETITIVE INSPECTIONS AND MODIFICATIONS WITH REVISED SERVICE
INFORMATION
This paragraph restates the requirements of paragraph (h) of AD 2014-
16-02, with revised service information. Within 25 flight cycles or 90
days, whichever occurs first, after August 12, 2014 (the effective
date of AD 2014-16-02), do detailed inspections (including a borescope
inspection) of both engine thrust reversers for cracks, in accordance
with the Accomplishment Instructions of Bombardier Alert Service
Bulletin A600-0769, Revision 01, dated June 26, 2014; or Bombardier
Alert Service Bulletin A600-0769, Revision 02, dated February 22,
2016. As of the effective date of this AD, use only Bombardier Alert
Service Bulletin A600-0769, Revision 02, dated February 22, 2016.
(1) If no cracking is found during any inspection required by paragraph
(h) of this AD, repeat the inspection required by paragraph (h) of
this AD thereafter at intervals not to exceed 100 flight cycles until
the repair or modification specified in paragraph (i) or (k) of this
AD is done.
(2) If any cracking is found during any inspection required by paragraph
(h) of this AD, before further flight, modify the thrust reversers on
both engines, in accordance with Part B of the Accomplishment Instruc-
tions of Bombardier Alert Service Bulletin A600-0769, Revision 01,
dated June 26, 2014; or Bombardier Alert Service Bulletin A600-0769,
Revision 02, dated February 22, 2016. As of the effective date of this
AD, use only Bombardier Alert Service Bulletin A600-0769, Revision 02,
dated February 22, 2016.
(i) RETAINED OPTIONAL TERMINATING MODIFICATION WITH REVISED SERVICE INFOR-
MATION
This paragraph restates the optional terminating action specified in
paragraph (i) of AD 2014-16-02, with revised service information. Mod-
ifying the thrust reversers on both engines, in accordance with Part B
of the Accomplishment Instructions of Bombardier Alert Service
Bulletin A600-0769, Revision 01, dated June 26, 2014; or Bombardier
Alert Service Bulletin A600-0769, Revision 02, dated February 22,
2016; terminates the inspections required by paragraph (h) of this AD.
As of the effective date of this AD, use only Bombardier Alert Service
Bulletin A600-0769, Revision 02, dated February 22, 2016.
(j) RETAINED CREDIT FOR PREVIOUS ACTIONS, WITH NO CHANGES
This paragraph restates the credit provided in paragraph (j) of AD
2014-16-02 with no changes. This paragraph provides credit for actions
required by paragraphs (h) and (i) of this AD, if those actions were
performed before August 12, 2014 (the effective date of AD 2014-16-02)
using Bombardier Alert Service Bulletin A600-0769 dated June 19, 2014.
(k) NEW REQUIREMENT OF THIS AD: PERMANENT MODIFICATION AND INSPECTIONS
Within 24 months after the accomplishing the modification specified in
paragraph (h)(2) of this AD, or within 48 months after accomplishing
the initial inspection required by paragraph (h) of this AD, whichever
occurs later: Modify the thrust reversers on both engines, including
doing the inspections specified in paragraphs (k)(1) through (k)(6) of
this AD, in accordance with Part C of the Accomplishment Instructions
of Bombardier Alert Service Bulletin A600-0769, Revision 02, dated
February 22, 2016, except as required by paragraphs (m)(1) and (m)(2)
of this AD. Modification of all thrust reversers terminates the re-
quirements of paragraphs (g), (h), and (i) of this AD.
(1) Do general visual inspections of the flipper doors for cracks.
(2) Do a general visual inspection of the thrust reverser skin, frames,
joints, splices, and fasteners for cracks.
(3) Do a general visual inspection of the thrust reverser for cracks.
(4) Do liquid penetrant or eddy current inspections, as applicable, of the
frames for cracks.
(5) Do a detailed visual inspection of the frames for cracks and elongated
holes, and do a liquid penetrant inspection of the frames for cracks.
(6) Do a liquid penetrant or an eddy current inspection of the translating
sleeve skin for cracks.
(l) NEW REQUIREMENT OF THIS AD: REPAIR
If, during any inspection required by paragraph (k) of this AD, any
cracking or elongated hole is found, before further flight, repair
using a method approved by the Manager, New York Aircraft
Certification Office (ACO), ANE-170, FAA; or Transport Canada Civil
Aviation (TCCA); or Bombardier, Inc.’s TCCA Design Approval
Organization (DAO).
(m) NEW EXCEPTIONS TO SERVICE INFORMATION
(1) If it is not possible to follow all instructions specified in
Bombardier Alert Service Bulletin A600-0769 Revision 02, dated
February 22, 2016, during accomplishment of the actions required by
paragraph (k) of this AD, before further flight, repair using a
method approved by the Manager, New York ACO, ANE-170, FAA; or TCCA;
or Bombardier, Inc.’s TCCA DAO.
(2) Where Bombardier Alert Service Bulletin A600-0769, Revision 02, dated
February 22, 2016, specifies to contact Bombardier if shim thickness
is over the applicable thicknesses identified in Bombardier Alert
Service Bulletin A600-0769, Revision 02, dated February 22, 2016, be-
fore further flight, repair using a method approved by the Manager,
New York ACO, ANE-170, FAA; or TCCA; or Bombardier, Inc.’s TCCA DAO.
(n) OTHER FAA AD PROVISIONS
The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, New York
ACO, ANE-170, 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, send it to ATTN:
Program Manager, Continuing Operational Safety, FAA, New York ACO,
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: As of the effective date of this AD, 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, ANE-170, FAA; or TCCA; or Bombardier,
Inc.’s TCCA 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-2014-19R1, dated March 11, 2016, for related informa-
tion. This MCAI may be found in the AD docket on the Internet at http:
//www.regulations.gov by searching for and locating Docket No. FAA-
2015-7529.
(2) For more information about this AD, contact Cesar Gomez, Aerospace
Engineer, Airframe and Mechanical Systems Branch, ANE-171, FAA, New
York Aircraft Certification Office (ACO), 1600 Stewart Avenue, Suite
410, Westbury, NY 11590; telephone 516-228-7318; fax 516-794-5531.
(3) Service information identified in this AD that is not incorporated by
reference is available at the addresses specified in paragraphs (p)(5)
and (p)(6) of this AD.
(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.
(3) The following service information was approved for IBR on August 3,
2017.
(i) Bombardier Alert Service Bulletin A600-0769, Revision 02, dated
February 22, 2016.
(ii) Canadair Temporary Revision 600/29-2, dated January 18, 2016, to the
Canadair CL-600-1A11 Airplane Flight Manual.
(iii) Canadair Temporary Revision 600-1/24-2, dated January 18, 2016, to
the Canadair CL-600-1A11 Airplane Flight Manual (Winglets).
(4) The following service information was approved for IBR on August 12,
2014 (79 FR 46968, August 12, 2014).
(i) Bombardier Alert Service Bulletin A600-0769, Revision 01, dated June
26, 2014.
(ii) Canadair TR 600/29, dated June 20, 2014, to the Canadair CL-600-1A11
Airplane Flight Manual.
(iii) Canadair TR 600-1/24, dated June 20, 2014, to the Canadair CL-600-
1A11 AFM (Winglets), including Erratum, Publication No. PSP 600-1AFM
(US), TR No. 600-1/24, June 20, 2014.
(5) For service information identified in this AD, contact Bombardier,
Inc., 400 Côte-Vertu Road West, Dorval, Québec H4S 1Y9, Canada; Wide-
body Customer Response Center North America; toll-free telephone
number 1-866-538-1247 or direct-dial telephone number 1-514-855-2999;
fax 514-855-7401; email ac.yul@aero.bombardier.com; Internet http://
www.bombardier.com.
(6) You may view this service information at the FAA, Transport Airplane
Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the
availability of this material at the FAA, call 425-227-1221.
(7) 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/ibr-
locations.html.
Issued in Renton, Washington, on June 16, 2017. Michael Kaszycki, Acting
Manager, Transport Airplane Directorate, Aircraft Certification Service.
FOR FURTHER INFORMATION CONTACT: Cesar Gomez, Aerospace Engineer, Airframe
and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft Certifica-
tion Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 516-228-7318; fax 516-794-5531.
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2015-7529; Directorate Identifier 2014-NM-207-AD;
Amendment 39-18939; AD 2017-13-09]
RIN 2120-AA64
Airworthiness Directives; Bombardier, Inc., Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: We are superseding Airworthiness Directive (AD) 2014-16-02,
which applied to certain Bombardier, Inc., Model CL-600-1A11 (CL-600)
airplanes. AD 2014-16-02 required revising the airplane flight manual
to prohibit thrust reverser operation, doing repetitive detailed
inspections of both engine thrust reversers for cracks, and modifying
the thrust reversers if necessary. The modification is also an interim
(optional) terminating action for the repetitive inspections. This new
AD adds a new terminating modification of the thrust reversers, which
includes new inspections and repair, if necessary. This AD was prompted
by a determination that it is necessary to add a requirement to repair
or modify the thrust reversers, which would terminate the requirements
of AD 2014-16-02. We are issuing this AD to address the unsafe
condition on these products.
DATES: This AD is effective August 3, 2017.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of August 3,
2017.
The Director of the Federal Register approved the incorporation by
reference of certain other publications listed in this AD as of August
12, 2014 (79 FR 46968, August 12, 2014).
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 number 1-866-538-1247 or direct-dial
telephone number 1-514-855-2999; fax 514-855-7401; email
ac.yul@aero.bombardier.com; Internet http://www.bombardier.com. You may
view this referenced service information at the FAA, Transport Airplane
Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the
availability of this material at the FAA, call 425-227-1221. It is also
available on the Internet at http://www.regulations.gov by searching
for and locating Docket No. FAA-2015-7529.
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-2015-
7529; 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 AD, the regulatory evaluation, any comments received, and
other information. The address for the Docket Office (telephone 800-
647-5527) is Docket 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: Cesar Gomez, Aerospace Engineer,
Airframe and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft
Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury,
NY 11590; telephone 516-228-7318; fax 516-794-5531.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a supplemental notice of proposed rulemaking (SNPRM) to
amend 14 CFR part 39 to supersede AD 2014-16-02, Amendment 39-17926 (79
FR 46968, August 12, 2014) (``AD 2014-16-02''). AD 2014-16-02 applied
to certain Bombardier, Inc. Model CL-600-1A11 (CL-600) airplanes. The
SNPRM published in the Federal Register on December 13, 2016 (81 FR
89881) (``the SNPRM''). We preceded the SNPRM with a notice of proposed
rulemaking (NPRM) that published in the Federal Register on December
24, 2015 (80 FR 80293) (``the NPRM''). The NPRM was prompted by a
determination that it is necessary to add a requirement to repair or
modify the thrust reversers, which would terminate the requirements of
AD 2014-16-02 after modification or repair. The NPRM proposed to
continue to require the actions specified in AD 2014-16-02 until
modification or repair of the thrust reversers. The SNPRM proposed to
reduce the compliance time for modification of the thrust reversers,
and add new modification procedures. We are issuing this AD to detect
and correct cracks of the translating sleeve at the thrust reverser
actuator attachment points, which could result in deployment or
dislodgement of an engine thrust reverser in flight and subsequent
reduced control of the airplane.
Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian Airworthiness Directive CF-
2014-19R1, dated March 11, 2016 (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-
1A11 (CL-600) airplanes. The MCAI states:
There have been two reported incidents of partial deployment of
an engine thrust reverser in-flight, caused by a failure of the
translating sleeve at the thrust reverser actuator attachment
points. Inspection of the same area on some other thrust reversers
revealed cracks emanating from the holes under the nut plates.
In both incidents, the affected aeroplane landed safely without
any noticeable controllability issues, however structural failure of
thrust reverser actuator attachment points resulting in thrust
reverser deployment or dislodgment in flight is a safety hazard
warranting an immediate mitigating action.
To help in mitigating any immediate safety hazard, Bombardier
Inc. has revised the Aircraft Flight Manual (AFM) through Temporary
Revisions (TR) 600/29, 600/30, 600-1/24 and 600-1/26, to prohibit
the thrust reverser operation on affected aeroplanes. Additionally,
as an interim corrective action, Bombardier Inc. has issued alert
service bulletin (ASB) A600-0769 requiring an inspection and/or a
mechanical lock out of the thrust reverser to prevent it from moving
out of forward thrust mode.
Original [TCCA] Emergency AD CF-2014-19 [which corresponds to
FAA AD 2014-16-02] was issued 20 June 2014 to mandate the
incorporation of above mentioned revised AFM procedures and
compliance with ASB A600-0769. This [TCCA] AD is now being revised
to include the terminating action [modification of the thrust
reversers] in accordance with Part C of the ASB A600-0769 Rev 02
dated 22 February 2016.
You may examine the MCAI in the AD docket on the Internet at http://www.
regulations.gov by searching for and locating Docket No. FAA-2015-7529.
Comments
We gave the public the opportunity to participate in developing
this AD. We received no comments on the SNPRM or on the determination
of the cost to the public.
Conclusion
We reviewed the available data and determined that air safety and
the public interest require adopting this AD as proposed, except for
minor editorial changes. We have determined that these minor changes:
Are consistent with the intent that was proposed in the
SNPRM for correcting the unsafe condition; and
Do not add any additional burden upon the public than was
already proposed in the SNPRM.
Related Service Information Under 1 CFR Part 51
We reviewed Bombardier Alert Service Bulletin A600-0769, Revision
02, dated February 22, 2016. The service information describes
procedures for a new permanent modification of the thrust reversers on
both engines, which includes inspections for cracks and elongated
holes.
We also reviewed the following TRs, which introduce procedures to
prohibit thrust reverser operation. These documents are distinct since
they apply to different airplane configurations.
Canadair TR 600/29-2, dated January 18, 2016, to the
Canadair CL-600-1A11 AFM.
Canadair TR 600-1/24-2, dated January 18, 2016, to the
Canadair CL-600-1A11 AFM (Winglets).
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 18 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 |
| AFM revision; inspection [retained
actions from AD 2014-16-02]
|
29 work-hours x $85 per hour
= $2,465 |
N/A |
$2,465 |
$44,370 |
| New modification |
100 work-hours x $85 per hour
= $8,500 |
$509 |
9,009 |
162,162 |
We estimate the following costs to
do any necessary modifications
that will be required based on the results of the inspection. We have
no way of determining the number of aircraft that might need this
modification:
On-Condition Costs
|
Action
|
Labor cost
|
Parts cost
|
Cost per
product
|
| Modification |
36 work-hours x $85 per hour
= $3,060 |
$509
|
$3,569
|
We have received no definitive data
that would enable us to provide
cost estimates for the on-condition actions for the inspections that
are part of the new modification 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.
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.
Regulatory Findings
We determined that 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 the 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.
Sec. 39.13 [Amended]
2. The FAA amends Sec. 39.13 by removing Airworthiness Directive (AD)
2014-16-02, Amendment 39-17926 (79 FR 46968, August 12, 2014), and
adding the following new AD:
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