Airworthiness Directives; Eurocopter France Helicopters, 70205-70207 [2013-27638]

Download as PDF Federal Register / Vol. 78, No. 227 / Monday, November 25, 2013 / Rules and Regulations 641–3775; or at https://www.eurocopter.com/ techpub. (4) You may view this service information at FAA, Office of the Regional Counsel, Southwest Region, 2601 Meacham Blvd., Room 663, Fort Worth, Texas 76137. For information on the availability of this material at the FAA, call (817) 222–5110. (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 Fort Worth, Texas, on November 5, 2013. Lance T. Gant, Acting Directorate Manager, Rotorcraft Directorate, Aircraft Certification Service. [FR Doc. 2013–27637 Filed 11–22–13; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2013–0487; Directorate Identifier 2010–SW–056–AD; Amendment 39–17666; AD 2013–23–11] RIN 2120–AA64 Airworthiness Directives; Eurocopter France Helicopters Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: We are adopting a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model AS332L2 and EC225LP helicopters. This AD requires inspecting the torque value of the bolts that secure the front and rear main gearbox (MGB) suspension bar attaching fittings, and re-torqueing the bolts to the proper value if the torque value is out of tolerance. This AD also requires, if the torque value is out of tolerance by more than 20 percent, inspecting the bolts, frames, and related equipment for a crack and repairing or replacing them if cracked. This AD was prompted by reports of cracks on Frame 5295 of Model AS332L2 helicopters. The actions of this AD are intended to detect the torque loss of the bolts that secure the MGB bar attaching fittings and to prevent cracks that could lead to failure of the MGB supporting structure, detachment of the MGB, and loss of helicopter control. DATES: This AD is effective December 30, 2013. The Director of the Federal Register approved the incorporation by reference emcdonald on DSK67QTVN1PROD with RULES SUMMARY: VerDate Mar<15>2010 15:59 Nov 22, 2013 Jkt 232001 of certain documents listed in this AD as of December 30, 2013. For service information identified in this AD, contact American Eurocopter Corporation, 2701 N. Forum Drive, Grand Prairie, TX 75052; telephone (972) 641–0000 or (800) 232– 0323; fax (972) 641–3775; or at https:// www.eurocopter.com/techpub. You may review the referenced service information at the FAA, Office of the Regional Counsel, Southwest Region, 2601 Meacham Blvd., Room 663, Fort Worth, Texas 76137. ADDRESSES: Examining the AD Docket You may examine the AD docket on the Internet at https:// www.regulations.gov 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 foreign authority’s AD, any incorporated-byreference service information, the economic evaluation, any comments received, and other information. The street address for the Docket Operations Office (phone: 800–647–5527) is U.S. Department of Transportation, Docket Operations Office, M–30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE., Washington, DC 20590. Gary Roach, Aviation Safety Engineer, Regulations and Policy Group, Rotorcraft Directorate, FAA, 2601 Meacham Blvd., Fort Worth, Texas 76137; telephone (817) 222–5110; email gary.b.roach@faa.gov. FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: Discussion On June 7, 2013, at 78 FR 34288, the Federal Register published our notice of proposed rulemaking (NPRM), which proposed to amend 14 CFR part 39 to include an AD that would apply to Eurocopter Model AS332L2 and EC225LP helicopters. The NPRM proposed to require inspecting the torque value of the bolts that secure the front and rear MGB suspension bar attaching fittings, and re-torqueing the bolts to the proper value if the torque value is out of tolerance. The NPRM also proposed to require that if the torque value is out of tolerance by more than 20 percent, inspecting the bolts, frames, and related equipment for a crack and repairing or replacing them if cracked. The proposed requirements were intended to detect the torque loss of the bolts that secure the MGB bar attaching fittings and to prevent cracks that could lead to failure of the MGB PO 00000 Frm 00015 Fmt 4700 Sfmt 4700 70205 supporting structure, detachment of the MGB, and loss of helicopter control. The NPRM was prompted by AD No. 2006–0163 R1, dated December 13, 2007 (AD No. 2006–0163R1), issued by the European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community, to correct an unsafe condition in Model AS 332 L2 and Model EC 225 LP helicopters. According to EASA, analysis of tightening torques revealed some cases of tightening torque loss, which can lead to the formation of a crack at the MGB bar attaching fittings. As a result, EASA AD No. 2006–0163R1 requires checking the bolts securing the front and rear of the MGB bar attaching fittings for tightening torque loss and, if the loss is equal to or greater than 20 percent, readjusting the torque and checking the four bolts securing the MGB bar attaching fitting mounting plate, as well as the frame 3855, for a crack. If there is a crack in at least one of the bolts, AD No. 2006–0163R1 requires replacing all four bolts. If there is a crack in frame 3855, AD No. 2006– 0163R1 requires suspending all flights and contacting the manufacturer for corrective action. Comments We gave the public the opportunity to participate in developing this AD, but we received no comments on the NPRM (78 FR 34288, June 7, 2013). FAA’s Determination These helicopters have been approved by the aviation authority of France and are approved for operation in the United States. Pursuant to our bilateral agreement with France, EASA, its technical representative, has notified us of the unsafe condition described in the EASA AD. We are issuing this AD because we evaluated all information provided by EASA and determined the unsafe condition exists and is likely to exist or develop on other helicopters of these same type designs and that air safety and the public interest require adopting the AD requirements as proposed. Differences Between This AD and the EASA AD This AD differs from the EASA AD in that we use the word ‘‘inspect’’ to describe actions required by a mechanic versus the word ‘‘check,’’ which is how we describe actions allowed by a pilot. We also require that if you find a crack in a frame or fitting, you repair or replace the cracked part instead of contacting the manufacturer. Also, we have different compliance times for the initial inspection for the tightening E:\FR\FM\25NOR1.SGM 25NOR1 70206 Federal Register / Vol. 78, No. 227 / Monday, November 25, 2013 / Rules and Regulations torque of the bolts that secure the MGB attaching fitting. Related Service Information We reviewed Eurocopter Alert Service Bulletin (ASB) No. 05.00.65, Revision 0, dated March 28, 2006, for Model AS332L2 helicopters, and ASB No. 05A002, Revision 1, dated December 6, 2007, for Model EC225LP helicopters. The ASBs specify inspecting the tightening torque of the bolts that secure the front and rear of the MGB bar attaching fittings. If more than a 20 percent tightening torque load loss is discovered, the ASBs require inspecting the frames 3855 and 5295 for a crack in the area of the MGB bar attaching fittings. EASA classified these ASBs as mandatory and issued EASA AD No. 2006–0163 R1 to ensure the continued airworthiness of these helicopters. emcdonald on DSK67QTVN1PROD with RULES Costs of Compliance We estimate that this AD affects 4 helicopters of U.S. Registry and that labor costs average $85 a work-hour. Based on these estimates, we expect the following costs: • Inspecting the torque of each bolt that secures the front and rear MGB attaching fitting requires 1 work-hour and no parts for a total cost of $85 per helicopter, and $340 for the U.S. fleet. • Readjusting the torque adds another 0.25 work-hour for a total cost of about $21 per helicopter. • Replacing all four nuts and bolts of an attachment fitting requires 4 workhours. Parts cost $1,000 for a total cost of $1,340 per helicopter. • Replacing the attachment fitting or plate requires 16 work-hours respectively. Parts cost $2,000 respectively for a total cost of $3,360 to replace each part per helicopter. • Replacing frames 3855 and 5295 require 40 work-hours respectively. Parts cost $5,000 to replace each frame for a total cost of $8,400 per frame per helicopter. 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 VerDate Mar<15>2010 15:59 Nov 22, 2013 Jkt 232001 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 helicopters identified in this rulemaking action. 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) Is not a ‘‘significant rule’’ under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); (3) Will not affect intrastate aviation in Alaska to the extent that it justifies making a regulatory distinction; 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 an economic evaluation of the estimated costs to comply with this AD and placed it in the AD docket. 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 airworthiness directive (AD): ■ 2013–23–11 Eurocopter France: Amendment 39–17666; Docket No. FAA–2013–0487; Directorate Identifier 2010–SW–056–AD. (a) Applicability This AD applies to Eurocopter France (Eurocopter) Model AS332L2 and EC225LP helicopters, certificated in any category. PO 00000 Frm 00016 Fmt 4700 Sfmt 4700 (b) Unsafe Condition This AD defines the unsafe condition as loss of tightening torque of a bolt that secures the front and rear main gearbox (MGB) suspension bar attaching fittings, which can change the loads on the frames and cause cracking. This condition could lead to failure of the MGB supporting structure, detachment of the MGB, and subsequent loss of control of the helicopter. (c) Effective Date This AD becomes effective December 30, 2013. (d) Compliance You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time. (e) Required Actions (1) Within 500 hours time-in-service (TIS), and thereafter at intervals not to exceed 825 hours TIS, inspect the tightening torque of each bolt that secures the front and rear MGB attaching fitting by using as reference Figure 1 of Eurocopter Alert Service Bulletin (ASB) No. 05.00.65, Revision 0, dated March 28, 2006, for the Model AS332L2 helicopters; and ASB No. 05A002, Revision 1, dated December 6, 2007, for the Model EC225LP helicopters. (2) If the loss of tightening torque of a nut is less than or equal to 20 percent of the minimum tightening torque, before further flight, readjust the tightening torque. (3) If the loss of tightening torque of any nut (front or rear) is greater than 20 percent of the minimum tightening torque, before further flight: (i) Inspect each bolt and nut that secures the attachment fitting for a crack, and (ii) Inspect for a crack in the attachment area of the attachment fitting, the attachment plate, and Frame 3855 for the front fitting and Frame 5295 for the rear fitting. (A) If no crack exists, readjust the tightening torque. (B) If there is a crack in any nut or bolt, before further flight, replace all four nuts and bolts of the affected attachment fitting. (C) If there is a crack in the attachment area of the attachment fitting or the attachment plate, before further flight, replace the cracked attachment fitting or plate with an airworthy fitting or plate. (D) If there is a crack in Frame 3855 for the front fitting or Frame 5295 for the rear fitting, before further flight, repair or replace the frame. (f) Alternative Methods of Compliance (AMOCs) (1) The Manager, Safety Management Group, FAA, may approve AMOCs for this AD. Send your proposal to: Gary Roach, Aviation Safety Engineer, Regulations and Policy Group, Rotorcraft Directorate, FAA, 2601 Meacham Blvd., Fort Worth, Texas 76137; telephone (817) 222–5110; email gary.b.roach@faa.gov. (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 E:\FR\FM\25NOR1.SGM 25NOR1 Federal Register / Vol. 78, No. 227 / Monday, November 25, 2013 / Rules and Regulations 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. DEPARTMENT OF TRANSPORTATION (g) Additional Information [Docket No. FAA–2013–0418; Directorate Identifier 2012–NM–200–AD; Amendment 39–17668; AD 2013–23–13] The subject of this AD is addressed in the European Aviation Safety Agency (EASA) AD No. 2006–0163 R1, dated December 13, 2007. You may view the EASA AD at https:// www.regulations.gov in Docket No. FAA– 2013–0487. 14 CFR Part 39 RIN 2120–AA64 Airworthiness Directives; Airbus Airplanes Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. AGENCY: (h) Subject Joint Aircraft Service Component (JASC) Code: 6330, Main Rotor Transmission Mount. (i) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference 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) Eurocopter Alert Service Bulletin No. 05.00.65, Revision 0, dated March 28, 2006. (ii) Eurocopter Alert Service Bulletin No. 05A002, Revision 1, dated December 6, 2007. (3) For Eurocopter service information identified in this AD, contact American Eurocopter Corporation, 2701 N. Forum Drive, Grand Prairie, TX 75052; telephone (972) 641–0000 or (800) 232–0323; fax (972) 641–3775; or at https://www.eurocopter.com/ techpub. (4) You may view this service information at FAA, Office of the Regional Counsel, Southwest Region, 2601 Meacham Blvd., Room 663, Fort Worth, Texas 76137. For information on the availability of this material at the FAA, call (817) 222–5110. (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 Fort Worth, Texas, on November 5, 2013. Lance T. Gant, Acting Directorate Manager, Rotorcraft Directorate, Aircraft Certification Service. [FR Doc. 2013–27638 Filed 11–22–13; 8:45 am] BILLING CODE 4910–13–P emcdonald on DSK67QTVN1PROD with RULES Federal Aviation Administration We are adopting a new airworthiness directive (AD) for certain Airbus Model A300 series airplanes; Model A300 B4–600, B4–600R, and F4– 600R series airplanes; and Model A300 C4–605R Variant F airplanes (collectively called Model A300–600 series airplanes). This AD was prompted by a report that cracking was found in area 2 of the frame base fittings between frame 41 and frame 46. This AD requires a check of maintenance records to determine if certain repairs were done in area 1 of the frame base fittings, and, for affected airplanes, a detailed inspection for cracking in area 2 of the frame base fittings between frame 41 and frame 46, and repair if necessary. We are issuing this AD to detect and correct cracking in area 2 of the frame base fittings between frame 41 and frame 46, which could adversely affect the structural integrity of the airplane. DATES: This AD becomes effective December 30, 2013. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of December 30, 2013. ADDRESSES: You may examine the AD docket on the Internet at https:// www.regulations.gov/ #!docketDetail;D=FAA-2013-0418 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 FURTHER INFORMATION CONTACT: Dan Rodina, Aerospace Engineer, International Branch, ANM–116, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW., Renton, WA 98057–3356; telephone: (425) 227–2125; fax: (425) 227–1149. SUPPLEMENTARY INFORMATION: SUMMARY: Discussion We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR VerDate Mar<15>2010 15:59 Nov 22, 2013 Jkt 232001 PO 00000 Frm 00017 Fmt 4700 Sfmt 4700 70207 part 39 by adding an AD that would apply to the specified products. The NPRM was published in the Federal Register on May 14, 2013 (78 FR 28159). The NPRM proposed to correct an unsafe condition for the specified products. The European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community, has issued EASA Airworthiness Directive 2012–0229, dated October 31, 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: During accomplishment of Airbus SB [service bulletin] A300–53–6111, which addresses detailed visual inspections of the lower frame fittings between Frame (FR) 41 and FR 46, on one A300–600 aeroplane a crack was detected in the area 2 of the foot of frame FR 46 at junction radius level. This frame, that was previously repaired due to a crack finding in the area 1, was not due to be inspected before reaching the postrepair inspection threshold, i.e., 45,400 FC [flight cycles], from repair embodiment. It has been determined that the current repairs proposed in Airbus SB A300–53– 6111 and Airbus [SB] A300–53–0337 are of limited effect to prevent cracking in the area 2 of the lower frame fittings. Consequently, as a temporary action and until an improvement of the existing repairs is made available, this [EASA] AD requires a one-time detailed visual inspection [for cracking] of [the] frame base fittings that were repaired in accordance with Airbus SB A300–53–0337, original issue or Rev. 1, or Airbus SB A300–53–6111 original issue up to Rev. 4 * * *. The unsafe condition is cracking in the frame base fittings, which could adversely affect the structural integrity of the airplane. The required actions include repairing any cracking found. You may obtain further information by examining the MCAI in the AD docket on the Internet at https:// www.regulations.gov/ #!documentDetail;D=FAA-2013-04180002. Comments We gave the public the opportunity to participate in developing this AD. We have considered the comment received. Request To Correct Typographical Error in SUMMARY Section UPS noted there is a typographical error in the SUMMARY section of the NPRM (78 FR 28159, May 14, 2013). UPS stated that the third line includes the phrase ‘‘frame brace fittings,’’ but throughout the rest of the document the terminology used is ‘‘frame base fittings.’’ UPS suggested that for E:\FR\FM\25NOR1.SGM 25NOR1

Agencies

[Federal Register Volume 78, Number 227 (Monday, November 25, 2013)]
[Rules and Regulations]
[Pages 70205-70207]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2013-27638]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2013-0487; Directorate Identifier 2010-SW-056-AD; 
Amendment 39-17666; AD 2013-23-11]
RIN 2120-AA64


Airworthiness Directives; Eurocopter France Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: We are adopting a new airworthiness directive (AD) for 
Eurocopter France (Eurocopter) Model AS332L2 and EC225LP helicopters. 
This AD requires inspecting the torque value of the bolts that secure 
the front and rear main gearbox (MGB) suspension bar attaching 
fittings, and re-torqueing the bolts to the proper value if the torque 
value is out of tolerance. This AD also requires, if the torque value 
is out of tolerance by more than 20 percent, inspecting the bolts, 
frames, and related equipment for a crack and repairing or replacing 
them if cracked. This AD was prompted by reports of cracks on Frame 
5295 of Model AS332L2 helicopters. The actions of this AD are intended 
to detect the torque loss of the bolts that secure the MGB bar 
attaching fittings and to prevent cracks that could lead to failure of 
the MGB supporting structure, detachment of the MGB, and loss of 
helicopter control.

DATES: This AD is effective December 30, 2013.
    The Director of the Federal Register approved the incorporation by 
reference of certain documents listed in this AD as of December 30, 
2013.

ADDRESSES: For service information identified in this AD, contact 
American Eurocopter Corporation, 2701 N. Forum Drive, Grand Prairie, TX 
75052; telephone (972) 641-0000 or (800) 232-0323; fax (972) 641-3775; 
or at https://www.eurocopter.com/techpub. You may review the referenced 
service information at the FAA, Office of the Regional Counsel, 
Southwest Region, 2601 Meacham Blvd., Room 663, Fort Worth, Texas 
76137.

Examining the AD Docket

    You may examine the AD docket on the Internet at https://www.regulations.gov 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 foreign authority's AD, 
any incorporated-by-reference service information, the economic 
evaluation, any comments received, and other information. The street 
address for the Docket Operations Office (phone: 800-647-5527) is U.S. 
Department of Transportation, Docket Operations Office, M-30, West 
Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., 
Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Gary Roach, Aviation Safety Engineer, 
Regulations and Policy Group, Rotorcraft Directorate, FAA, 2601 Meacham 
Blvd., Fort Worth, Texas 76137; telephone (817) 222-5110; email 
gary.b.roach@faa.gov.

SUPPLEMENTARY INFORMATION:

Discussion

    On June 7, 2013, at 78 FR 34288, the Federal Register published our 
notice of proposed rulemaking (NPRM), which proposed to amend 14 CFR 
part 39 to include an AD that would apply to Eurocopter Model AS332L2 
and EC225LP helicopters. The NPRM proposed to require inspecting the 
torque value of the bolts that secure the front and rear MGB suspension 
bar attaching fittings, and re-torqueing the bolts to the proper value 
if the torque value is out of tolerance. The NPRM also proposed to 
require that if the torque value is out of tolerance by more than 20 
percent, inspecting the bolts, frames, and related equipment for a 
crack and repairing or replacing them if cracked. The proposed 
requirements were intended to detect the torque loss of the bolts that 
secure the MGB bar attaching fittings and to prevent cracks that could 
lead to failure of the MGB supporting structure, detachment of the MGB, 
and loss of helicopter control.
    The NPRM was prompted by AD No. 2006-0163 R1, dated December 13, 
2007 (AD No. 2006-0163R1), issued by the European Aviation Safety 
Agency (EASA), which is the Technical Agent for the Member States of 
the European Community, to correct an unsafe condition in Model AS 332 
L2 and Model EC 225 LP helicopters. According to EASA, analysis of 
tightening torques revealed some cases of tightening torque loss, which 
can lead to the formation of a crack at the MGB bar attaching fittings. 
As a result, EASA AD No. 2006-0163R1 requires checking the bolts 
securing the front and rear of the MGB bar attaching fittings for 
tightening torque loss and, if the loss is equal to or greater than 20 
percent, readjusting the torque and checking the four bolts securing 
the MGB bar attaching fitting mounting plate, as well as the frame 
3855, for a crack. If there is a crack in at least one of the bolts, AD 
No. 2006-0163R1 requires replacing all four bolts. If there is a crack 
in frame 3855, AD No. 2006-0163R1 requires suspending all flights and 
contacting the manufacturer for corrective action.

Comments

    We gave the public the opportunity to participate in developing 
this AD, but we received no comments on the NPRM (78 FR 34288, June 7, 
2013).

FAA's Determination

    These helicopters have been approved by the aviation authority of 
France and are approved for operation in the United States. Pursuant to 
our bilateral agreement with France, EASA, its technical 
representative, has notified us of the unsafe condition described in 
the EASA AD. We are issuing this AD because we evaluated all 
information provided by EASA and determined the unsafe condition exists 
and is likely to exist or develop on other helicopters of these same 
type designs and that air safety and the public interest require 
adopting the AD requirements as proposed.

Differences Between This AD and the EASA AD

    This AD differs from the EASA AD in that we use the word 
``inspect'' to describe actions required by a mechanic versus the word 
``check,'' which is how we describe actions allowed by a pilot. We also 
require that if you find a crack in a frame or fitting, you repair or 
replace the cracked part instead of contacting the manufacturer. Also, 
we have different compliance times for the initial inspection for the 
tightening

[[Page 70206]]

torque of the bolts that secure the MGB attaching fitting.

Related Service Information

    We reviewed Eurocopter Alert Service Bulletin (ASB) No. 05.00.65, 
Revision 0, dated March 28, 2006, for Model AS332L2 helicopters, and 
ASB No. 05A002, Revision 1, dated December 6, 2007, for Model EC225LP 
helicopters. The ASBs specify inspecting the tightening torque of the 
bolts that secure the front and rear of the MGB bar attaching fittings. 
If more than a 20 percent tightening torque load loss is discovered, 
the ASBs require inspecting the frames 3855 and 5295 for a crack in the 
area of the MGB bar attaching fittings. EASA classified these ASBs as 
mandatory and issued EASA AD No. 2006-0163 R1 to ensure the continued 
airworthiness of these helicopters.

Costs of Compliance

    We estimate that this AD affects 4 helicopters of U.S. Registry and 
that labor costs average $85 a work-hour. Based on these estimates, we 
expect the following costs:
     Inspecting the torque of each bolt that secures the front 
and rear MGB attaching fitting requires 1 work-hour and no parts for a 
total cost of $85 per helicopter, and $340 for the U.S. fleet.
     Readjusting the torque adds another 0.25 work-hour for a 
total cost of about $21 per helicopter.
     Replacing all four nuts and bolts of an attachment fitting 
requires 4 work-hours. Parts cost $1,000 for a total cost of $1,340 per 
helicopter.
     Replacing the attachment fitting or plate requires 16 
work-hours respectively. Parts cost $2,000 respectively for a total 
cost of $3,360 to replace each part per helicopter.
     Replacing frames 3855 and 5295 require 40 work-hours 
respectively. Parts cost $5,000 to replace each frame for a total cost 
of $8,400 per frame per helicopter.

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 helicopters identified in this 
rulemaking action.

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) Is not a ``significant rule'' under DOT Regulatory Policies and 
Procedures (44 FR 11034, February 26, 1979);
    (3) Will not affect intrastate aviation in Alaska to the extent 
that it justifies making a regulatory distinction; 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 an economic evaluation of the estimated costs to comply 
with this AD and placed it in the AD docket.

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 airworthiness 
directive (AD):

2013-23-11 Eurocopter France: Amendment 39-17666; Docket No. FAA-
2013-0487; Directorate Identifier 2010-SW-056-AD.

(a) Applicability

    This AD applies to Eurocopter France (Eurocopter) Model AS332L2 
and EC225LP helicopters, certificated in any category.

(b) Unsafe Condition

    This AD defines the unsafe condition as loss of tightening 
torque of a bolt that secures the front and rear main gearbox (MGB) 
suspension bar attaching fittings, which can change the loads on the 
frames and cause cracking. This condition could lead to failure of 
the MGB supporting structure, detachment of the MGB, and subsequent 
loss of control of the helicopter.

(c) Effective Date

    This AD becomes effective December 30, 2013.

(d) Compliance

    You are responsible for performing each action required by this 
AD within the specified compliance time unless it has already been 
accomplished prior to that time.

(e) Required Actions

    (1) Within 500 hours time-in-service (TIS), and thereafter at 
intervals not to exceed 825 hours TIS, inspect the tightening torque 
of each bolt that secures the front and rear MGB attaching fitting 
by using as reference Figure 1 of Eurocopter Alert Service Bulletin 
(ASB) No. 05.00.65, Revision 0, dated March 28, 2006, for the Model 
AS332L2 helicopters; and ASB No. 05A002, Revision 1, dated December 
6, 2007, for the Model EC225LP helicopters.
    (2) If the loss of tightening torque of a nut is less than or 
equal to 20 percent of the minimum tightening torque, before further 
flight, readjust the tightening torque.
    (3) If the loss of tightening torque of any nut (front or rear) 
is greater than 20 percent of the minimum tightening torque, before 
further flight:
    (i) Inspect each bolt and nut that secures the attachment 
fitting for a crack, and
    (ii) Inspect for a crack in the attachment area of the 
attachment fitting, the attachment plate, and Frame 3855 for the 
front fitting and Frame 5295 for the rear fitting.
    (A) If no crack exists, readjust the tightening torque.
    (B) If there is a crack in any nut or bolt, before further 
flight, replace all four nuts and bolts of the affected attachment 
fitting.
    (C) If there is a crack in the attachment area of the attachment 
fitting or the attachment plate, before further flight, replace the 
cracked attachment fitting or plate with an airworthy fitting or 
plate.
    (D) If there is a crack in Frame 3855 for the front fitting or 
Frame 5295 for the rear fitting, before further flight, repair or 
replace the frame.

(f) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Safety Management Group, FAA, may approve AMOCs 
for this AD. Send your proposal to: Gary Roach, Aviation Safety 
Engineer, Regulations and Policy Group, Rotorcraft Directorate, FAA, 
2601 Meacham Blvd., Fort Worth, Texas 76137; telephone (817) 222-
5110; email gary.b.roach@faa.gov.
    (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

[[Page 70207]]

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

    The subject of this AD is addressed in the European Aviation 
Safety Agency (EASA) AD No. 2006-0163 R1, dated December 13, 2007. 
You may view the EASA AD at https://www.regulations.gov in Docket No. 
FAA-2013-0487.

(h) Subject

    Joint Aircraft Service Component (JASC) Code: 6330, Main Rotor 
Transmission Mount.

(i) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference 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) Eurocopter Alert Service Bulletin No. 05.00.65, Revision 0, 
dated March 28, 2006.
    (ii) Eurocopter Alert Service Bulletin No. 05A002, Revision 1, 
dated December 6, 2007.
    (3) For Eurocopter service information identified in this AD, 
contact American Eurocopter Corporation, 2701 N. Forum Drive, Grand 
Prairie, TX 75052; telephone (972) 641-0000 or (800) 232-0323; fax 
(972) 641-3775; or at https://www.eurocopter.com/techpub.
    (4) You may view this service information at FAA, Office of the 
Regional Counsel, Southwest Region, 2601 Meacham Blvd., Room 663, 
Fort Worth, Texas 76137. For information on the availability of this 
material at the FAA, call (817) 222-5110.
    (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 Fort Worth, Texas, on November 5, 2013.
Lance T. Gant,
Acting Directorate Manager, Rotorcraft Directorate, Aircraft 
Certification Service.
[FR Doc. 2013-27638 Filed 11-22-13; 8:45 am]
BILLING CODE 4910-13-P
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