[Federal Register Volume 79, Number 150 (Tuesday, August 5, 2014)]
[Rules and Regulations]
[Pages 45335-45337]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2014-18247]



[[Page 45335]]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2014-0515; Directorate Identifier 2014-SW-036-AD; 
Amendment 39-17921; AD 2014-12-51]
RIN 2120-AA64


Airworthiness Directives; Airbus Helicopters (Previously 
Eurocopter France)

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

ACTION: Final rule; request for comments.

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SUMMARY: We are publishing a new airworthiness directive (AD) for 
Airbus Helicopters Model EC130B4 and EC130T2 helicopters, which was 
sent previously to all known U.S. owners and operators of these 
helicopters. This AD requires repetitively inspecting the Fenestron to 
tailboom junction frame (junction frame) for a crack. This AD is 
prompted by reports of a crack propagating through the junction frame 
on two EC130B4 helicopters. These actions are intended to detect a 
crack and to prevent failure of the junction frame, which could result 
in loss of the Fenestron and subsequent loss of control of the 
helicopter.

DATES: This AD becomes effective August 20, 2014 to all persons except 
those persons to whom it was made immediately effective by Emergency AD 
(EAD) 2014-12-51, issued on June 10, 2014, which contained the 
requirements of this AD.
    The Director of the Federal Register approved the incorporation by 
reference of a certain document listed in this AD as of August 20, 
2014.
    We must receive comments on this AD by October 6, 2014.

ADDRESSES: You may send comments by any of the following methods:
     Federal eRulemaking Docket: Go to http://www.regulations.gov. Follow the online instructions for sending your 
comments electronically.
     Fax: 202-493-2251.
     Mail: Send comments to the U.S. Department of 
Transportation, Docket Operations, M-30, West Building Ground Floor, 
Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590-0001.
     Hand Delivery: Deliver to the ``Mail'' address between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://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 European Aviation Safety 
Agency (EASA) AD, any incorporated by reference service information, 
the economic evaluation, any comments received, and other information. 
The street address for the Docket Operations Office (telephone 800-647-
5527) is in the ADDRESSES section. Comments will be available in the AD 
docket shortly after receipt.
    For service information identified in this AD, contact Airbus 
Helicopters, Inc., 2701 N. Forum Drive, Grand Prairie, TX 75052; 
telephone (972) 641-0000 or (800) 232-0323; fax (972) 641-3775; or at 
http://www.airbushelicopters.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.

FOR FURTHER INFORMATION CONTACT: Robert Grant, Aviation Safety 
Engineer, Safety Management Group, FAA, 2601 Meacham Blvd., Fort Worth, 
Texas 76137; telephone (817) 222-5110; email [email protected].

SUPPLEMENTARY INFORMATION:

Comments Invited

    This AD is a final rule that involves requirements affecting flight 
safety, and we did not provide you with notice and an opportunity to 
provide your comments prior to it becoming effective. However, we 
invite you to participate in this rulemaking by submitting written 
comments, data, or views. We also invite comments relating to the 
economic, environmental, energy, or federalism impacts that resulted 
from adopting this AD. The most helpful comments reference a specific 
portion of the AD, explain the reason for any recommended change, and 
include supporting data. To ensure the docket does not contain 
duplicate comments, commenters should send only one copy of written 
comments, or if comments are filed electronically, commenters should 
submit them only one time. We will file in the docket all comments that 
we receive, as well as a report summarizing each substantive public 
contact with FAA personnel concerning this rulemaking during the 
comment period. We will consider all the comments we receive and may 
conduct additional rulemaking based on those comments.

Discussion

    On June 10, 2014, we issued EAD 2014-12-51, which applies to 
helicopters with 690 or more hours time-in-service (TIS), and requires 
within 10 hours TIS, dye-penetrant inspecting certain areas of the 
junction frame for a crack. EAD 2014-12-51 also requires, at intervals 
not exceeding 25 hours TIS, either repeating the dye-penetrant 
inspection or performing a borescope inspection of certain areas of the 
junction frame for a crack. If there is a crack, EAD 2014-12-51 
requires replacing the junction frame. EAD 2014-12-51 was sent 
previously to all known U.S. owners and operators of these helicopters.
    EAD 2014-12-51 was prompted by EASA EAD No. 2014-0145-E, dated June 
6, 2014 (EAD 2014-0145-E). EASA, which is the Technical Agent for the 
Member States of the European Union, issued EAD 2014-0145-E to correct 
an unsafe condition for Airbus Helicopters Model EC130B4 and EC130T2 
helicopters. EASA advises that following unscheduled inspections, two 
events of crack propagation through the junction frame of the tailboom/
Fenestron were reported on EC130B4 helicopters, and that an 
investigation revealed the cracks initiated in the lower right-hand 
part of the junction frame between the web and the flange where the 
lower spar of the tailboom is joined. EASA also advises that the cracks 
were of a significant length, and were not visible from the outside of 
the helicopter. Finally, EASA advises that this condition, if not 
detected, could lead to structural failure, possibly resulting in 
Fenestron detachment and consequent loss of control of the helicopter. 
EAD 2014-0145-E requires, within 10 hours TIS or 7 days, inspecting the 
junction frame in the radius between the web and the flange on the 
tailcone side for a crack. EAD 2014-0145-E also requires, at intervals 
not exceeding 25 hours TIS, inspecting the frame web for a crack with a 
borescope. If there is a crack, the EASA AD requires contacting Airbus 
Helicopters for repair procedures.

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

[[Page 45336]]

exist or develop on other helicopters of these same type designs.

Related Service Information

    Airbus Helicopters has issued Emergency Alert Service Bulletin No. 
05A017, Revision 0, dated June 6, 2014 (EASB 05A017) for Model EC130B4 
and EC130T2 helicopters. EASB 05A017 describes procedures for 
inspecting, through the inside of the tailboom, the web of the frame 
and in the radius between the web and the flange on the tailcone side 
for a crack. If there is a crack, EASB 05A017 directs operators to 
contact Airbus Helicopters for specific procedures to return the 
helicopter to conformity.

AD Requirements

    This AD requires, for helicopters with 690 or more hours TIS:
     Within 10 hours TIS, removing the horizontal stabilizer, 
cleaning the junction frame, and dye-penetrant inspecting the junction 
frame for a crack in the areas shown in Figure 1 of EASB 05A017;
     Within 25 hours of the dye-penetrant inspection, and at 
intervals not exceeding 25 hours TIS, either repeating the dye-
penetrant inspection or, using a borescope, inspecting the junction 
frame for a crack in the areas shown in Figure 2 of EASB 05A017.
     If there is a crack, this AD requires, before further 
flight, replacing the junction frame.

Differences Between This AD and the EASA AD

    EAD 2014-0145-E allows a visual inspection for the initial 10 hour 
TIS inspection, while this AD requires a dye-penetrant inspection. If 
there is a crack, EAD 2014-0145-E requires contacting Airbus 
Helicopters for approved repair instructions, while this AD requires 
replacing the junction frame. Finally, EAD 2014-0145-E requires 
inspecting the junction frame within 10 hours TIS or 7 days, whichever 
occurs earlier, while this AD requires inspecting within 10 hours TIS.

Interim Action

    We consider this EAD to be an interim action. If final action is 
later identified, we might consider further rulemaking then.

Costs of Compliance

    We estimate that this AD will affect 194 helicopters of U.S. 
Registry. We estimate that operators may incur the following costs in 
order to comply with this AD. At an average labor rate of $85 per hour, 
dye-penetrant inspecting the junction frame will require 1 work-hour, 
for a cost per helicopter of $85, and a total cost of $16,490 for the 
fleet, per inspection cycle. Borescope inspecting the junction frame 
will require .5 work-hour, for a cost per helicopter of $43 and a total 
cost of $8,342 for the fleet, per inspection cycle.
    If required, replacing the junction frame will require 50 work-
hours, and required parts will cost $60,000, for a cost per helicopter 
of $64,250.

FAA's Justification and Determination of the Effective Date

    Providing an opportunity for public comments before adopting these 
AD requirements would delay implementing the safety actions needed to 
correct this known unsafe condition. Therefore, we found and continue 
to find that the risk to the flying public justifies waiving notice and 
comment prior to adopting this rule because the initial required 
corrective action must be done within 10 hours time-in-service, a very 
short time period based on the average flight-hour utilization rate of 
these helicopters.
    Since it was found that immediate corrective action was required, 
notice and opportunity for prior public comment before issuing this AD 
were impracticable and contrary to the public interest and that good 
cause existed to make the AD effective immediately by EAD 2014-12-51, 
issued on June 10, 2014, to all known U.S. owners and operators of 
these helicopters. These conditions still exist and the AD is hereby 
published in the Federal Register as an amendment to section 39.13 of 
the Federal Aviation Regulations (14 CFR 39.13) to make it effective to 
all persons.

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, 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):

2014-12-51 Airbus Helicopters (previously Eurocopter France): 
Amendment 39-17921; Docket No. FAA-2014-0515; Directorate Identifier 
2014-SW-036-AD.

(a) Applicability

    This AD applies to Airbus Helicopters Model EC130B4 and EC130T2 
helicopters, with 690 or more hours time-in-service (TIS), 
certificated in any category.

(b) Unsafe Condition

    This AD defines the unsafe condition as a crack in the tailboom 
to Fenestron junction frame (junction frame). This condition could 
result in failure of the junction frame, which could result in loss 
of the Fenestron and subsequent loss of control of the helicopter.

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(c) Effective Date

    This AD becomes effective August 20, 2014 to all persons except 
those persons to whom it was made immediately effective by Emergency 
AD 2014-12-51, issued on June 10, 2014, which contained the 
requirements of this AD.

(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 10 hours TIS, remove the horizontal stabilizer, clean 
the junction frame, and dye-penetrant inspect around the 
circumference of the junction frame for a crack in the areas shown 
in Figure 1 of Airbus Helicopters EC130 Emergency Alert Service 
Bulletin No. 05A017, Revision 0, dated June 6, 2014 (EASB 05A017). 
Pay particular attention to the area around the 4 spars (item b) of 
Figure 1 of EASB 05A017. An example of a crack is shown in Figure 3 
of EASB 05A017.
    (2) Within 25 hours TIS of the inspection required by paragraph 
(e)(1) of this AD, and thereafter at intervals not exceeding 25 
hours TIS, either perform the actions of paragraph (e)(1) of this AD 
or, if the area is clean, using a borescope, inspect around the 
circumference of the junction frame for a crack in the areas shown 
in Figure 2 of EASB 05A017. Pay particular attention to the area 
around the 4 spars (item b) of Figure 2 of EASB 05A017. An example 
of a crack is shown in Figure 3 of EASB 05A017.
    (3) If there is a crack, before further flight, replace the 
junction frame.

(f) Special Flight Permits

    Special flight permits are prohibited.

(g) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Safety Management Group, FAA, may approve AMOCs 
for this AD. Send your proposal to: Robert Grant, Aviation Safety 
Engineer, Safety Management Group, FAA, 2601 Meacham Blvd., Fort 
Worth, Texas 76137; telephone (817) 222-5110; email 
[email protected].
    (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.

(h) Additional Information

    The subject of this AD is addressed in European Aviation Safety 
Agency EAD No. 2014-0145-E, dated June 6, 2014. You may view the 
EASA AD on the Internet at http://www.regulations.gov in Docket No. 
FAA-2014-0515.

(i) Subject

    Joint Aircraft Service Component (JASC) Code: 5302: Rotorcraft 
Tailboom.

(j) 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) Airbus Helicopters Emergency Alert Service Bulletin No. 
05A017, Revision 0, dated June 6, 2014.
    (ii) [Reserved]
    (3) For Airbus Helicopters service information identified in 
this AD, contact Airbus Helicopters, Inc., 2701 N. Forum Drive, 
Grand Prairie, TX 75052; telephone (972) 641-0000 or (800) 232-0323; 
fax (972) 641-3775; or at http://www.airbushelicopters.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 also 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 Fort Worth, Texas, on July 24, 2014.
Lance T. Gant,
Acting Directorate Manager, Rotorcraft Directorate, Aircraft 
Certification Service.
[FR Doc. 2014-18247 Filed 8-4-14; 8:45 am]
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