Airworthiness Directives; Bombardier, Inc. Airplanes, 65198-65200 [2013-25629]

Download as PDF 65198 Federal Register / Vol. 78, No. 211 / Thursday, October 31, 2013 / Rules and Regulations (2) For operations conducted under a 14 CFR part 119 operating certificate or under 14 CFR part 91, subpart K, we suggest that you notify your principal inspector or lacking a principal inspector, the manager of the local flight standards district office or certificate holding district office before operating any aircraft complying with this AD through an AMOC. (g) Additional Information MDHI Alert Service Bulletin SB900–116R1, dated April 9, 2010, which supersedes MDHI Alert Service Bulletin SB SB900–116, dated February 24, 1010, neither of which is incorporated by reference, contains additional information about the subject of this AD. For service information identified in this AD, contact MDHI, Attn: Customer Support Division, 4555 E. McDowell Rd., Mail Stop M615, Mesa, AZ 85215–9734, telephone (800) 388–3378, fax (480) 346– 6813, or at https://www.mdhelicopters.com. You may review copies of the service information at the FAA, Office of the Regional Counsel, Southwest Region, 2601 Meacham Blvd., Room 663, Fort Worth, Texas. (h) Subject Joint Aircraft System Component: 6210: Main rotor blade retention bolts. Issued in Fort Worth, Texas, on September 27, 2013. Lance T. Gant, Acting Directorate Manager, Rotorcraft Directorate, Aircraft Certification Service. [FR Doc. 2013–25702 Filed 10–30–13; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2012–0594; Directorate Identifier 2012–NM–019–AD; Amendment 39–17641; AD 2013–22–09] RIN 2120–AA64 Airworthiness Directives; Bombardier, Inc. Airplanes Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. AGENCY: We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC–8–400, –401, and –402 airplanes. This AD was prompted by reports of movement of the rudder pedals being impeded due to corrosion of the trunnion shaft of the rudder feel trim unit (RFTU). This AD requires an inspection to determine if certain RFTUs are installed, an operational check for signs of seizure of affected parts, repetitive lubrication of certain RFTUs, and replacement of the wreier-aviles on DSK5TPTVN1PROD with RULES SUMMARY: VerDate Mar<15>2010 15:19 Oct 30, 2013 Jkt 232001 RFTU if necessary. Installing replacement RFTUs having conformal bushings terminates the repetitive lubrication requirements. We are issuing this AD to detect and correct any sign of rough movement or seizure of the trunnion shaft and its bushing, which could cause a rudder control jam or a large and rapid alternating rudder input leading to a structural failure of the vertical fin. DATES: This AD becomes effective December 5, 2013. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of December 5, 2013. ADDRESSES: You may examine the AD docket on the Internet at https:// www.regulations.gov/ #!docketDetail;D=FAA-2012-0594 or in person at the U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE., Washington, DC. For service information identified in this AD, contact Bombardier, Inc., QSeries Technical Help Desk, 123 Garratt Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone 416–375–4000; fax 416–375–4539; email thd.qseries@ aero.bombardier.com; Internet https:// 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. FOR FURTHER INFORMATION CONTACT: Cesar Gomez, Aerospace Engineer, Airframe and Mechanical Systems Branch, ANE–171, FAA, New York Aircraft Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, New York 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 by adding an AD that would apply to the specified products. The SNPRM was published in the Federal Register on March 12, 2013 (78 FR 15655). We preceded the SNPRM with a notice of proposed rulemaking (NPRM), which published in the Federal Register on June 12, 2012 (77 FR 34874). The NPRM and the SNPRM both proposed to correct an unsafe condition for the specified products. Transport Canada Civil Aviation (TCCA), which is the aviation authority for Canada, has issued Canadian Airworthiness Directive CF–2012–02R1, PO 00000 Frm 00054 Fmt 4700 Sfmt 4700 dated October 12, 2012 (referred to after this as the Mandatory Continuing Airworthiness Information, or ‘‘the MCAI’’), to correct an unsafe condition for the specified products. The MCAI states: There have been several reported incidents on DHC–8 Series 400 aeroplanes where the movement of the rudder pedals has been impeded. An investigation showed that the Rudder Feel Trim Unit (RFTU) trunnion shaft was corroded. The root cause of the corrosion was a quality escape where cadmium plating on the trunnion bushing within the RFTU assembly was not removed. Corrosion on the shaft and in the trunnion bushing seized the trunnion and caused difficulties in controlling the rudder movement. This condition, if not corrected, could cause a rudder control jam or a large and rapid alternating rudder input leading to a structural failure of the vertical fin. This [TCCA] Airworthiness Directive (AD) is issued [inspect to determine serial number, an operational check for seizure, repetitive lubrication and] to replace the affected RFTUs to limit the possibility of binding and replace the affected RFTUs with units that have been reworked with conformal bushings to terminate the lubrication requirements. You may examine the MCAI in the AD docket on the Internet at https:// www.regulations.gov/ #!documentDetail;D=FAA-2012-05940006. Comments We gave the public the opportunity to participate in developing this AD. We considered the comments received. Request To Revise Compliance Time for Operational Check Horizon Air (Horizon) requested that paragraph (g)(2) of the SNPRM (78 FR 15655, March 12, 2013) be revised to allow operators that perform a review of airplane maintenance records, in lieu of visually inspecting the serial number of the RFTU, time to schedule the operational check specified by paragraph (g)(2) of the SNPRM. Horizon stated that the compliance time ‘‘before further flight’’ specified in paragraph (g)(2) of the SNPRM would immediately ground aircraft. We agree with Horizon’s request. We have revised the compliance time in paragraph (g)(2) of this final rule to ‘‘200 flight hours or 2 months, whichever occurs first after the effective date of this AD’’ for performing the operational check specified in that paragraph. Explanation of Changes Made to This AD We have revised paragraph (h) of this final rule to specify that installing replacement RFTUs having conformal bushings terminates the repetitive lubrication requirements of paragraph E:\FR\FM\31OCR1.SGM 31OCR1 65199 Federal Register / Vol. 78, No. 211 / Thursday, October 31, 2013 / Rules and Regulations (g)(2)(ii) of this final rule for the affected RTFU. Conclusion We reviewed the available data, including the comment received, and determined that air safety and the public interest require adopting this AD with the changes described previously. We have determined that these changes: • Are consistent with the intent that was proposed in the SNPRM (78 FR 15655, March 12, 2013) for correcting the unsafe condition; and • Do not add any additional burden upon the public than was already proposed in the SNPRM (78 FR 15655, March 12, 2013). Costs of Compliance We estimate that this AD affects 83 airplanes of U.S. registry. We estimate the following costs to comply with this AD: ESTIMATED COSTS Action Parts cost Labor cost Inspection, Replacement, Lubrication. 5 work-hours × $85 per hour = $425 per inspection, replacement, and lubrication cycle. We estimate the following costs to do any necessary replacements that would Cost per product Cost on U.S. operators $0 $425 per inspection, replacement, and lubrication cycle. $35,275 inspection, replacement, and lubrication cycle. be required based on the results of the inspection. We have no way of determining the number of aircraft that might need these replacements: ON-CONDITION COSTS Action Labor cost Parts cost Cost per product Replacement ................................................................. 17 work-hours × $85 per hour = $1,445 ...................... $0 $1,445 wreier-aviles on DSK5TPTVN1PROD with RULES Where the service information lists required parts costs that are covered under warranty, we have assumed that there will be no charge for these parts. As we do not control warranty coverage for affected parties, some parties may incur costs higher than estimated here. 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 VerDate Mar<15>2010 15:19 Oct 30, 2013 Jkt 232001 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. We prepared a regulatory evaluation of the estimated costs to comply with this AD and placed it in the AD docket. Examining the AD Docket You may examine the AD docket on the Internet at https:// www.regulations.gov/ #!docketDetail;D=FAA-2012-0594; or in person at the Docket Operations office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this AD, the MCAI, the regulatory evaluation, any comments received, and other information. The street address for the Docket Operations office (telephone (800) 647–5527) is in the ADDRESSES section. PO 00000 Frm 00055 Fmt 4700 Sfmt 4700 List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new AD: ■ 2013–22–09 Bombardier, Inc.: Amendment 39–17641. Docket No. FAA–2012–0594; Directorate Identifier 2012–NM–019–AD. (a) Effective Date This airworthiness directive (AD) becomes effective December 5, 2013. (b) Affected ADs None. (c) Applicability This AD applies to Bombardier, Inc. Model DHC–8–400, –401, and –402 airplanes, certificated in any category, serial numbers (S/N) 4001, 4003 and subsequent, equipped with rudder feel trim unit (RFTU) part number (P/N) 399500–1007. E:\FR\FM\31OCR1.SGM 31OCR1 65200 Federal Register / Vol. 78, No. 211 / Thursday, October 31, 2013 / Rules and Regulations (d) Subject Air Transport Association (ATA) of America Code 27: Flight Controls. (e) Reason This AD was prompted by reports of movement of the rudder pedals being impeded due to corrosion of the trunnion shaft of the RFTU. We are issuing this AD to detect and correct any sign of rough movement or seizure of the trunnion shaft and its bushing, which could cause a rudder control jam or a large and rapid alternating rudder input leading to a structural failure of the vertical fin. wreier-aviles on DSK5TPTVN1PROD with RULES (f) Compliance You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. (g) Inspection, Replacement, and Lubrication Within 200 flight hours or two months after the effective date of this AD, whichever occurs first: Inspect the RTFU to determine whether the serial number is in the range from S/N 0008 through 0509 inclusive without a suffix ‘B,’ in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84–27–60, dated July 12, 2012. A review of airplane maintenance records is acceptable in lieu of this inspection if the serial number of the RFTU can be conclusively determined from that review. (1) If the RFTU’s serial number is not in the range from S/N 0008 through 0509 inclusive, or if the serial number has a suffix ‘B,’ no further action is required for this paragraph. (2) If the RFTU’s serial number is in the range from S/N 0008 through 0509 inclusive, including those with a suffix ‘A,’ but not including those with suffix ‘B’: Within 200 flight hours or 2 months, whichever occurs first after the effective date of this AD, perform an operational check of the RFTU for any sign of rough movement or seizure of the trunnion or center shaft, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84–27–60, dated July 12, 2012. (i) If rough movement or seizure of the RFTU trunnion or center shaft is found: Before further flight, replace the RFTU with a new or serviceable RFTU, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84–27–60, dated July 12, 2012. (ii) If no rough movement or seizure of the RFTU trunnion or center shaft is found: Before further flight, lubricate the RFTU, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84–27–60, dated July 12, 2012. Repeat the lubrication of the RFTU at intervals not to exceed 600 flight hours or 3 months, whichever occurs first, until the RFTU is replaced with a unit that has a serial number outside the affected range or a serial number with a suffix ‘B.’ (h) Replacement For airplanes having an RFTU identified in paragraph (g)(2) of this AD: Except as VerDate Mar<15>2010 15:19 Oct 30, 2013 Jkt 232001 required by paragraph (g)(2)(i) of this AD, within 5,000 flight hours or 3 years after the effective date of this AD, whichever occurs first, replace all affected RFTUs with units that have a serial number outside the range from S/Ns 0008 through 0509 inclusive, or that have a serial number with a suffix ‘B,’ in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84–27–60, dated July 12, 2012. Installing replacement RFTUs having conformal bushings terminates the repetitive lubrication requirements of paragraph (g)(2)(ii) of this AD for the affected RTFU. (i) Parts Installation Limitation As of the effective date of this AD, no person may install an RFTU P/N 399500– 1007 with a serial number from S/N 0008 through 0509 inclusive, including serial numbers with suffix ‘A,’ on any airplane, except that RFTUs having a serial number with suffix ‘B’ may be installed. (j) Other FAA AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, New York Aircraft Certification Office (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 ACO, send it to ATTN: Program Manager, Continuing Operational Safety, FAA, New York ACO, 1600 Stewart Avenue, Suite 410, Westbury, New York 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. The AMOC approval letter must specifically reference this AD. (2) Airworthy Product: For any requirement in this AD to obtain corrective actions from a manufacturer or other source, use these actions if they are FAA-approved. Corrective actions are considered FAA-approved if they are approved by the State of Design Authority (or their delegated agent). You are required to assure the product is airworthy before it is returned to service. (k) Related Information Refer to MCAI Canadian Airworthiness Directive CF–2012–02R1, dated October 12, 2012, for related information, which can be found in the AD docket on the Internet at https://www.regulations.gov/ #!documentDetail;D=FAA-2012-0594-0006. (l) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) Bombardier Service Bulletin 84–27–60, dated July 12, 2012. PO 00000 Frm 00056 Fmt 4700 Sfmt 4700 (ii) Reserved. (3) For service information identified in this AD, contact Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone 416–375–4000; fax 416–375–4539; email thd.qseries@aero.bombardier.com; Internet https://www.bombardier.com. (4) You may review copies of the 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. (5) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202–741–6030, or go to: https:// www.archives.gov/federal-register/cfr/ibrlocations.html. Issued in Renton, Washington, on October 18, 2013. Jeffrey E. Duven, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2013–25629 Filed 10–30–13; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2013–0490; Directorate Identifier 2008–SW–004–AD; Amendment 39–17611; AD 2013–20–05] RIN 2120–AA64 Airworthiness Directives; Bell Helicopter Textron Canada Limited (Bell) Helicopters Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: We are adopting a new airworthiness directive (AD) for certain Bell Model 407 helicopters. This AD requires installing a placard beneath the NR/NP dual tachometer and revising the limitations section of the rotorcraft flight manual (RFM). This AD was prompted by several incidents of third stage engine turbine wheel failures, which were caused by excessive vibrations at certain engine speeds during steady-state operations. These actions are intended to alert pilots to avoid certain engine speeds during steady-state operations, prevent failure of the third stage engine turbine, engine power loss, and subsequent loss of control of the helicopter. DATES: This AD is effective December 5, 2013. The Director of the Federal Register approved the incorporation by reference SUMMARY: E:\FR\FM\31OCR1.SGM 31OCR1

Agencies

[Federal Register Volume 78, Number 211 (Thursday, October 31, 2013)]
[Rules and Regulations]
[Pages 65198-65200]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2013-25629]

-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2012-0594; Directorate Identifier 2012-NM-019-AD;
Amendment 39-17641; AD 2013-22-09]
RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc. Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: We are adopting a new airworthiness directive (AD) for certain
Bombardier, Inc. Model DHC-8-400, -401, and -402 airplanes. This AD was
prompted by reports of movement of the rudder pedals being impeded due
to corrosion of the trunnion shaft of the rudder feel trim unit (RFTU).
This AD requires an inspection to determine if certain RFTUs are
installed, an operational check for signs of seizure of affected parts,
repetitive lubrication of certain RFTUs, and replacement of the RFTU if
necessary. Installing replacement RFTUs having conformal bushings
terminates the repetitive lubrication requirements. We are issuing this
AD to detect and correct any sign of rough movement or seizure of the
trunnion shaft and its bushing, which could cause a rudder control jam
or a large and rapid alternating rudder input leading to a structural
failure of the vertical fin.

DATES: This AD becomes effective December 5, 2013.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of December 5,
2013.

ADDRESSES: You may examine the AD docket on the Internet at https://www.regulations.gov/#!docketDetail;D=FAA-2012-0594 or in person at the
U.S. Department of Transportation, Docket Operations, M-30, West
Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE.,
Washington, DC.
For service information identified in this AD, contact Bombardier,
Inc., Q-Series Technical Help Desk, 123 Garratt Boulevard, Toronto,
Ontario M3K 1Y5, Canada; telephone 416-375-4000; fax 416-375-4539;
email thd.qseries@aero.bombardier.com; Internet https://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.

FOR FURTHER INFORMATION CONTACT: Cesar Gomez, Aerospace Engineer,
Airframe and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft
Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, New
York 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 by adding an AD that would apply to the specified
products. The SNPRM was published in the Federal Register on March 12,
2013 (78 FR 15655). We preceded the SNPRM with a notice of proposed
rulemaking (NPRM), which published in the Federal Register on June 12,
2012 (77 FR 34874). The NPRM and the SNPRM both proposed to correct an
unsafe condition for the specified products.
Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian Airworthiness Directive CF-
2012-02R1, dated October 12, 2012 (referred to after this as the
Mandatory Continuing Airworthiness Information, or ``the MCAI''), to
correct an unsafe condition for the specified products. The MCAI
states:

There have been several reported incidents on DHC-8 Series 400
aeroplanes where the movement of the rudder pedals has been impeded.
An investigation showed that the Rudder Feel Trim Unit (RFTU)
trunnion shaft was corroded. The root cause of the corrosion was a
quality escape where cadmium plating on the trunnion bushing within
the RFTU assembly was not removed. Corrosion on the shaft and in the
trunnion bushing seized the trunnion and caused difficulties in
controlling the rudder movement.
This condition, if not corrected, could cause a rudder control
jam or a large and rapid alternating rudder input leading to a
structural failure of the vertical fin.
This [TCCA] Airworthiness Directive (AD) is issued [inspect to
determine serial number, an operational check for seizure,
repetitive lubrication and] to replace the affected RFTUs to limit
the possibility of binding and replace the affected RFTUs with units
that have been reworked with conformal bushings to terminate the
lubrication requirements.

You may examine the MCAI in the AD docket on the Internet at https://www.regulations.gov/#!documentDetail;D=FAA-2012-0594-0006.

Comments

We gave the public the opportunity to participate in developing
this AD. We considered the comments received.

Request To Revise Compliance Time for Operational Check

Horizon Air (Horizon) requested that paragraph (g)(2) of the SNPRM
(78 FR 15655, March 12, 2013) be revised to allow operators that
perform a review of airplane maintenance records, in lieu of visually
inspecting the serial number of the RFTU, time to schedule the
operational check specified by paragraph (g)(2) of the SNPRM. Horizon
stated that the compliance time ``before further flight'' specified in
paragraph (g)(2) of the SNPRM would immediately ground aircraft.
We agree with Horizon's request. We have revised the compliance
time in paragraph (g)(2) of this final rule to ``200 flight hours or 2
months, whichever occurs first after the effective date of this AD''
for performing the operational check specified in that paragraph.

Explanation of Changes Made to This AD

We have revised paragraph (h) of this final rule to specify that
installing replacement RFTUs having conformal bushings terminates the
repetitive lubrication requirements of paragraph

[[Page 65199]]

(g)(2)(ii) of this final rule for the affected RTFU.

Conclusion

We reviewed the available data, including the comment received, and
determined that air safety and the public interest require adopting
this AD with the changes described previously. We have determined that
these changes:
Are consistent with the intent that was proposed in the
SNPRM (78 FR 15655, March 12, 2013) for correcting the unsafe
condition; and
Do not add any additional burden upon the public than was
already proposed in the SNPRM (78 FR 15655, March 12, 2013).

Costs of Compliance

We estimate that this AD affects 83 airplanes of U.S. registry.
We estimate the following costs to comply with this AD:

Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost on U.S.
Action Labor cost Parts cost Cost per product operators
----------------------------------------------------------------------------------------------------------------
Inspection, Replacement, 5 work-hours x $85 $0 $425 per $35,275 inspection,
Lubrication. per hour = $425 inspection, replacement, and
per inspection, replacement, and lubrication cycle.
replacement, and lubrication cycle.
lubrication cycle.
----------------------------------------------------------------------------------------------------------------

We estimate the following costs to do any necessary replacements
that would be required based on the results of the inspection. We have
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.......................... 17 work-hours x $85 per $0 $1,445
hour = $1,445.
----------------------------------------------------------------------------------------------------------------

Where the service information lists required parts costs that are
covered under warranty, we have assumed that there will be no charge
for these parts. As we do not control warranty coverage for affected
parties, some parties may incur costs higher than estimated here.

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.
We prepared a regulatory evaluation of the estimated costs to
comply with this AD and placed it in the AD docket.

Examining the AD Docket

You may examine the AD docket on the Internet at https://www.regulations.gov/#!docketDetail;D=FAA-2012-0594; or in person at the
Docket Operations office between 9 a.m. and 5 p.m., Monday through
Friday, except Federal holidays. The AD docket contains this AD, the
MCAI, the regulatory evaluation, any comments received, and other
information. The street address for the Docket Operations office
(telephone (800) 647-5527) is in the ADDRESSES section.

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

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 adding the following new AD:

2013-22-09 Bombardier, Inc.: Amendment 39-17641. Docket No. FAA-
2012-0594; Directorate Identifier 2012-NM-019-AD.

(a) Effective Date

This airworthiness directive (AD) becomes effective December 5,
2013.

(b) Affected ADs

None.

This AD applies to Bombardier, Inc. Model DHC-8-400, -401, and -
402 airplanes, certificated in any category, serial numbers (S/N)
4001, 4003 and subsequent, equipped with rudder feel trim unit
(RFTU) part number (P/N) 399500-1007.

[[Page 65200]]

(d) Subject

Air Transport Association (ATA) of America Code 27: Flight
Controls.

(e) Reason

This AD was prompted by reports of movement of the rudder pedals
being impeded due to corrosion of the trunnion shaft of the RFTU. We
are issuing this AD to detect and correct any sign of rough movement
or seizure of the trunnion shaft and its bushing, which could cause
a rudder control jam or a large and rapid alternating rudder input
leading to a structural failure of the vertical fin.

(f) Compliance

You are responsible for having the actions required by this AD
performed within the compliance times specified, unless the actions
have already been done.

(g) Inspection, Replacement, and Lubrication

Within 200 flight hours or two months after the effective date
of this AD, whichever occurs first: Inspect the RTFU to determine
whether the serial number is in the range from S/N 0008 through 0509
inclusive without a suffix `B,' in accordance with the
Accomplishment Instructions of Bombardier Service Bulletin 84-27-60,
dated July 12, 2012. A review of airplane maintenance records is
acceptable in lieu of this inspection if the serial number of the
RFTU can be conclusively determined from that review.
(1) If the RFTU's serial number is not in the range from S/N
0008 through 0509 inclusive, or if the serial number has a suffix
`B,' no further action is required for this paragraph.
(2) If the RFTU's serial number is in the range from S/N 0008
through 0509 inclusive, including those with a suffix `A,' but not
including those with suffix `B': Within 200 flight hours or 2
months, whichever occurs first after the effective date of this AD,
perform an operational check of the RFTU for any sign of rough
movement or seizure of the trunnion or center shaft, in accordance
with the Accomplishment Instructions of Bombardier Service Bulletin
84-27-60, dated July 12, 2012.
(i) If rough movement or seizure of the RFTU trunnion or center
shaft is found: Before further flight, replace the RFTU with a new
or serviceable RFTU, in accordance with the Accomplishment
Instructions of Bombardier Service Bulletin 84-27-60, dated July 12,
2012.
(ii) If no rough movement or seizure of the RFTU trunnion or
center shaft is found: Before further flight, lubricate the RFTU, in
accordance with the Accomplishment Instructions of Bombardier
Service Bulletin 84-27-60, dated July 12, 2012. Repeat the
lubrication of the RFTU at intervals not to exceed 600 flight hours
or 3 months, whichever occurs first, until the RFTU is replaced with
a unit that has a serial number outside the affected range or a
serial number with a suffix `B.'

(h) Replacement

For airplanes having an RFTU identified in paragraph (g)(2) of
this AD: Except as required by paragraph (g)(2)(i) of this AD,
within 5,000 flight hours or 3 years after the effective date of
this AD, whichever occurs first, replace all affected RFTUs with
units that have a serial number outside the range from S/Ns 0008
through 0509 inclusive, or that have a serial number with a suffix
`B,' in accordance with the Accomplishment Instructions of
Bombardier Service Bulletin 84-27-60, dated July 12, 2012.
Installing replacement RFTUs having conformal bushings terminates
the repetitive lubrication requirements of paragraph (g)(2)(ii) of
this AD for the affected RTFU.

(i) Parts Installation Limitation

As of the effective date of this AD, no person may install an
RFTU P/N 399500-1007 with a serial number from S/N 0008 through 0509
inclusive, including serial numbers with suffix `A,' on any
airplane, except that RFTUs having a serial number with suffix `B'
may be installed.

(j) Other FAA AD Provisions

The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, New
York Aircraft Certification Office (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 ACO, send it to ATTN: Program Manager, Continuing
Operational Safety, FAA, New York ACO, 1600 Stewart Avenue, Suite
410, Westbury, New York 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. The AMOC approval letter must specifically
reference this AD.
(2) Airworthy Product: For any requirement in this AD to obtain
corrective actions from a manufacturer or other source, use these
actions if they are FAA-approved. Corrective actions are considered
FAA-approved if they are approved by the State of Design Authority
(or their delegated agent). You are required to assure the product
is airworthy before it is returned to service.

(k) Related Information

Refer to MCAI Canadian Airworthiness Directive CF-2012-02R1,
dated October 12, 2012, for related information, which can be found
in the AD docket on the Internet at https://www.regulations.gov/#!documentDetail;D=FAA-2012-0594-0006.

(l) Material Incorporated by Reference

(1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the service information listed
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do
the actions required by this AD, unless the AD specifies otherwise.
(i) Bombardier Service Bulletin 84-27-60, dated July 12, 2012.
(ii) Reserved.
(3) For service information identified in this AD, contact
Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt
Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone 416-375-4000;
fax 416-375-4539; email thd.qseries@aero.bombardier.com; Internet
https://www.bombardier.com.
(4) You may review copies of the 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.
(5) You may view this service information that is incorporated
by reference at the National Archives and Records Administration
(NARA). For information on the availability of this material at
NARA, call 202-741-6030, or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.

Issued in Renton, Washington, on October 18, 2013.
Jeffrey E. Duven,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2013-25629 Filed 10-30-13; 8:45 am]
BILLING CODE 4910-13-P

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