82 FR 44363 - Airworthiness Directives; Agusta S.p.A. Helicopters
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 82, Issue 183 (September 22, 2017)
Federal Aviation Administration
Federal Register Volume 82, Issue 183 (September 22, 2017)
| Page Range | 44363-44365 | |
| FR Document | 2017-19943 |
[Federal Register Volume 82, Number 183 (Friday, September 22, 2017)] [Proposed Rules] [Pages 44363-44365] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2017-19943] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2017-0103; Product Identifier 2016-SW-086-AD] RIN 2120-AA64 Airworthiness Directives; Agusta S.p.A. Helicopters AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). ----------------------------------------------------------------------- SUMMARY: We propose to adopt a new airworthiness directive (AD) for Agusta S.p.A. Model AB139 and Model AW139 helicopters. This proposed AD would require inspecting the thickness of the tail gearbox (TGB) central housing (housing). This proposed AD is prompted by reports that the housing thickness does not conform to its type design. The actions of this proposed AD are intended to detect and correct an unsafe condition on these products. DATES: We must receive comments on this proposed AD by November 21, 2017. 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 by searching for and locating Docket No. FAA-2017- 0103; 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 proposed AD, the European Aviation Safety Agency (EASA) AD, 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. [[Page 44364]] For service information identified in this proposed rule, contact Leonardo S.p.A., Matteo Ragazzi, Head of Airworthiness, Viale G.Agusta 520, 21017 C.Costa di Samarate (Va) Italy; telephone +39-0331-711756; fax +39-0331-229046; or at http://www.leonardocompany.com/-/bulletins. You may review the referenced service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy, Room 6N- 321, Fort Worth, TX 76177. FOR FURTHER INFORMATION CONTACT: Matt Fuller, Senior Aviation Safety Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy, Fort Worth, TX 76177; telephone (817) 222-5110; email [email protected]. SUPPLEMENTARY INFORMATION: Comments Invited 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 might result from adopting the proposals in this document. The most helpful comments reference a specific portion of the proposal, 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 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 proposed rulemaking. Before acting on this proposal, we will consider all comments we receive on or before the closing date for comments. We will consider comments filed after the comment period has closed if it is possible to do so without incurring expense or delay. We may change this proposal in light of the comments we receive. Discussion EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD No. 2016-0246, dated December 13, 2016, to correct an unsafe condition for Leonardo S.p.A. (formerly Finmeccanica S.p.A. and Agusta S.p.A.) Model AB139 and Model AW139 helicopters. EASA advises that the thickness of some sections of the housing do not conform to the type design. According to EASA, this condition, if not detected and corrected, could lead to premature cracks in the housing, resulting in failure of the tail gear rotor transmission and reduced control of the helicopter. The EASA AD consequently requires a one-time inspection to determine the thickness of the housing wall, and depending on the findings, replacing the housing or TGB assembly with an airworthy part. The FAA is in the process of updating Agusta S.p.A.'s name change to Leonardo S.p.A. on its FAA type certificate. Because this name change is not yet effective, this AD specifies Agusta S.p.A. as the type certificate holder. FAA's Determination These helicopters have been approved by the aviation authority of Italy and are approved for operation in the United States. Pursuant to our bilateral agreement with Italy, EASA, its technical representative, has notified us of the unsafe condition described in its AD. We are proposing this AD because we evaluated all known relevant information and determined that an unsafe condition is likely to exist or develop on other products of the same type design. Related Service Information Under 1 CFR Part 51 We reviewed Leonardo Bollettino Tecnico No. 139-274, dated September 14, 2016 (BT 139-274), which specifies procedures for a dimensional check of the housing or TGB to determine the thickness of the housing wall. For housings with fewer than 7,500 flight hours, BT 139-274 specifies compliance with the dimensional check by measurement during the next repair or overhaul, and replacing the housing if it does not meet its thickness requirement. For housings with 7,500 or more flight hours, BT 139-274 specifies compliance with the dimensional check by ultrasonic inspection within 300 flight hours, and replacing the TGB if it does not meet its thickness requirement. BT 139-274 excludes certain serial-numbered housings from the applicability because they were inspected before delivery to customers. This service information is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in the ADDRESSES section. Proposed AD Requirements This proposed AD would require the following: If a housing has fewer than 7,500 hours time-in-service (TIS), before reaching 7,500 hours TIS, inspecting the housing wall to determine the thickness and replacing the housing if the thickness is less than 2.65 mm (0.104 inch). If a housing has 7,500 or more hours TIS, within 300 hours TIS, ultrasonic inspecting the TGB to determine the thickness and replacing the TGB if the thickness is less than 2.65 mm (0.104 inch). Differences Between This Proposed AD and the EASA AD If a housing has fewer than 7,500 hours TIS, the EASA AD requires a dimensional inspection of the housing wall at a helicopter's first return to a shop or service station for a TGB overhaul or repair after the EASA AD's effective date but no later than 7,500 hours TIS. This proposed AD would require such an inspection only before reaching 7,500 hours TIS. Costs of Compliance We estimate that this proposed AD would affect 103 helicopters of U.S. Registry and that labor costs average $85 per work-hour. Based on these estimates, we expect the following costs: Measuring the thickness of the housing would require .5 work-hour and no parts would be needed for a cost of $43 per helicopter. Ultrasonic inspecting the thickness of the housing would require 2 work-hours and no parts would be needed for a cost of $170 per helicopter. Replacing the TGB housing would require 5 work-hours, and parts would cost $11,185 for a cost of $11,610 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 products identified in this rulemaking action. [[Page 44365]] Regulatory Findings We determined that this proposed AD would not have federalism implications under Executive Order 13132. This proposed AD would 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 this proposed regulation: 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 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 proposed 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. The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 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): Agusta S.p.A.: Docket No. FAA-2017-0103; Product Identifier 2016-SW-086-AD. (a) Applicability This AD applies to Agusta S.p.A. Model AB139 and Model AW139 helicopters, certificated in any category, with a tail gearbox (TGB) assembly part number (P/N) 3T6522A00239, 3T6522A00242, 3T6522A00243, or 3T6522A00246 that has a central housing P/N 3T6522A05144 or 3T6522A05146, all serial numbers except those listed in Table 1 of Leonardo Helicopters Bollettino Technico No. 139-274, dated September 14, 2016. (b) Unsafe Condition This AD defines the unsafe condition as nonconforming thickness in a section of a TGB central housing, which can lead to a crack in the TGB central housing. This condition could result in the failure of the tail gear rotor transmission and loss of helicopter control. (c) Comments Due Date We must receive comments by November 21, 2017. (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) For helicopters with a TGB central housing with less than 7,500 hours time-in-service (TIS), before accumulating 7500 hours TIS, measure the thickness of the central housing in accordance with the Compliance Instructions, Part I paragraphs 1 and 2, of Bollettino Tecnico No. 139-274, dated September 14, 2016 (BT 139- 274). If the thickness is less than 2.65 mm (0.104 inch), replace the TGB central housing before further flight. (2) For helicopters with a TGB central housing with 7500 or more hours TIS, within 300 hours TIS, ultrasonic inspect the TGB in accordance with the Compliance Instructions, Part II paragraphs 4 through 4.5 of BT 139-274. If the thickness is less than 2.65 mm (0.104 inch), replace the TGB before further flight. (3) After the effective date of this AD, do not install a central housing P/N 3T6522A05144 or 3T6522A05146, all serial numbers except those listed in Table 1 of BT 139-274, on any helicopter unless it has passed inspection in accordance with paragraph (e)(1) of this AD. (f) Special Flight Permits Special flight permits are prohibited. (g) Alternative Methods of Compliance (AMOCs) (1) The Manager, Safety Management Section, FAA, may approve AMOCs for this AD. Send your proposal to: Matt Fuller, Senior Aviation Safety Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy, Fort Worth, TX 76177; 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 (EASA) AD No. 2016-0246, dated December 13, 2016. You may view the EASA AD on the Internet at http://www.regulations.gov in the AD Docket. (i) Subject Joint Aircraft Service Component (JASC) Code: 6720, Tail Rotor Control System. Issued in Fort Worth, Texas, on September 11, 2017. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2017-19943 Filed 9-21-17; 8:45 am] BILLING CODE 4910-13-P
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Procedures (44 FR 11034, February 26, 800.65.0001, since new, or within the next 5 DEPARTMENT OF TRANSPORTATION
1979), hours TIS after the effective date of this AD,
(3) Will not affect intrastate aviation whichever occurs later, replace P/N Federal Aviation Administration
in Alaska, and 800.65.0001 with an improved exhaust
(4) Will not have a significant silencer, P/N 800.65.9010. Do the 14 CFR Part 39
economic impact, positive or negative, replacement as specified in Alexander
[Docket No. FAA–2017–0103; Product
on a substantial number of small entities Schleicher GmbH & Co. Segelflugzeugbau
Identifier 2016–SW–086–AD]
under the criteria of the Regulatory ASK 21 Mi Technical Note No. 11, ASW 22
Flexibility Act. BLE 50 R Technical Note No. 16, ASH 25 M/ RIN 2120–AA64
Mi Technical Note No. 32, ASH 26 E
List of Subjects in 14 CFR Part 39 Technical Note No. 19 (single document), Airworthiness Directives; Agusta
Air transportation, Aircraft, Aviation dated January 8, 2016. S.p.A. Helicopters
safety, Incorporation by reference, (2) As of the effective date of this AD, do AGENCY: Federal Aviation
Safety. not install a P/N 800.65.0001 exhaust
Administration (FAA), DOT.
silencer.
The Proposed Amendment ACTION: Notice of proposed rulemaking
Accordingly, under the authority (g) Other FAA AD Provisions (NPRM).
delegated to me by the Administrator, The following provisions also apply to this
AD:
SUMMARY: We propose to adopt a new
the FAA proposes to amend 14 CFR part airworthiness directive (AD) for Agusta
39 as follows: (1) Alternative Methods of Compliance
(AMOCs): The Manager, Small Airplane S.p.A. Model AB139 and Model AW139
PART 39—AIRWORTHINESS Standards Branch, FAA, has the authority to helicopters. This proposed AD would
DIRECTIVES approve AMOCs for this AD, if requested require inspecting the thickness of the
using the procedures found in 14 CFR 39.19. tail gearbox (TGB) central housing
■ 1. The authority citation for part 39 Send information to ATTN: Jim Rutherford, (housing). This proposed AD is
continues to read as follows: Aerospace Engineer, FAA, Small Airplane prompted by reports that the housing
Authority: 49 U.S.C. 106(g), 40113, 44701. Standards Branch, 901 Locust, Room 301, thickness does not conform to its type
Kansas City, Missouri 64106; telephone: design. The actions of this proposed AD
§ 39.13 [Amended] (816) 329–4165; fax: (816) 329–4090; email: are intended to detect and correct an
■ 2. The FAA amends § 39.13 by adding jim.rutherford@faa.gov. Before using any unsafe condition on these products.
the following new AD: approved AMOC on any glider to which the DATES: We must receive comments on
Alexander Schleicher GmbH & Co. AMOC applies, notify your appropriate this proposed AD by November 21,
Segelflugzeugbau: Docket No. FAA– principal inspector (PI) in the FAA Flight 2017.
2017–0911; Product Identifier 2017–CE– Standards District Office (FSDO), or lacking
ADDRESSES: You may send comments by
025–AD. a PI, your local FSDO.
any of the following methods:
(2) Contacting the Manufacturer: For any
(a) Comments Due Date • Federal eRulemaking Docket: Go to
requirement in this AD to obtain corrective
We must receive comments by November http://www.regulations.gov. Follow the
actions from a manufacturer, the action must
6, 2017. online instructions for sending your
be accomplished using a method approved
(b) Affected ADs comments electronically.
by the Manager, Small Airplane Standards
• Fax: 202–493–2251.
None. Branch, FAA; or the European Aviation
• Mail: Send comments to the U.S.
Safety Agency (EASA).
(c) Applicability Department of Transportation, Docket
This AD applies to Alexander Schleicher (h) Related Information Operations, M–30, West Building
GmbH & Co. Segelflugzeugbau Models ASH Refer to MCAI EASA AD 2017–0136, dated Ground Floor, Room W12–140, 1200
25M and ASH 26E gliders, all serial numbers, July 31, 2017, for related information. You New Jersey Avenue SE., Washington,
that: may examine the MCAI on the Internet at DC 20590–0001.
(1) Have an exhaust silencer, part number
http://www.regulations.gov by searching for • Hand Delivery: Deliver to the
(P/N) 800.65.0001, installed; and ‘‘Mail’’ address between 9 a.m. and 5
(2) are certificated in any category. and locating Docket No. FAA–2017–0911.
For service information related to this AD, p.m., Monday through Friday, except
(d) Subject contact Alexander Schleicher GmbH & Co. Federal holidays.
Air Transport Association of America Segelflugzeugbau, Alexander-Schleicher-Str. Examining the AD Docket
(ATA) Code 78: Engine Exhaust. 1, D–36163 Poppenhausen, Germany; phone:
+49 (0) 06658 89–0; fax: +49 (0) 06658 89– You may examine the AD docket on
(e) Reason
40; Internet: http://www.alexander- the Internet at http://
This AD was prompted by mandatory www.regulations.gov by searching for
schleicher.de/; email: info@alexander-
continuing airworthiness information (MCAI) and locating Docket No. FAA–2017–
originated by an aviation authority of another schleicher.de. You may review this
country to identify and correct an unsafe referenced service information at the FAA, 0103; or in person at the Docket
condition on an aviation product. The MCAI Policy and Innovation Division, 901 Locust, Operations Office between 9 a.m. and 5
describes the unsafe condition as fatigue Kansas City, Missouri 64106. For information p.m., Monday through Friday, except
cracks found on the exhaust silencer. We are on the availability of this material at the Federal holidays. The AD docket
issuing this AD to prevent heat damage in the FAA, call (816) 329–4148. contains this proposed AD, the
engine compartment and to the engine European Aviation Safety Agency
installation, which could result in reduced Issued in Kansas City, Missouri, on
(EASA) AD, the economic evaluation,
control. September 14, 2017.
any comments received, and other
Pat Mullen, information. The street address for the
(f) Actions and Compliance
Acting Deputy Director, Policy & Innovation Docket Operations Office (telephone
Unless already done, do the following
Division, Aircraft Certification Service. 800–647–5527) is in the ADDRESSES
actions:
(1) Before exceeding 150 hours time-in- [FR Doc. 2017–20052 Filed 9–21–17; 8:45 am] section. Comments will be available in
service (TIS) on the exhaust silencer, (P/N) BILLING CODE 4910–13–P the AD docket shortly after receipt.
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Regulatory Findings (b) Unsafe Condition (i) Subject
This AD defines the unsafe condition as Joint Aircraft Service Component (JASC)
We determined that this proposed AD nonconforming thickness in a section of a Code: 6720, Tail Rotor Control System.
would not have federalism implications TGB central housing, which can lead to a
under Executive Order 13132. This Issued in Fort Worth, Texas, on September
crack in the TGB central housing. This
proposed AD would not have a 11, 2017.
condition could result in the failure of the
substantial direct effect on the States, on tail gear rotor transmission and loss of Lance T. Gant,
the relationship between the national helicopter control. Director, Compliance & Airworthiness
Government and the States, or on the Division, Aircraft Certification Service.
(c) Comments Due Date
distribution of power and We must receive comments by November
[FR Doc. 2017–19943 Filed 9–21–17; 8:45 am]
responsibilities among the various 21, 2017. BILLING CODE 4910–13–P
levels of government.
(d) Compliance
For the reasons discussed, I certify
this proposed regulation: You are responsible for performing each DEPARTMENT OF TRANSPORTATION
action required by this AD within the
1. Is not a ‘‘significant regulatory specified compliance time unless it has Federal Aviation Administration
action’’ under Executive Order 12866; already been accomplished prior to that time.
2. Is not a ‘‘significant rule’’ under the 14 CFR Part 71
(e) Required Actions
DOT Regulatory Policies and Procedures
(44 FR 11034, February 26, 1979); (1) For helicopters with a TGB central [Docket No. FAA–2017–0740; Airspace
housing with less than 7,500 hours time-in- Docket No. 17–AGL–18]
3. Will not affect intrastate aviation in service (TIS), before accumulating 7500
Alaska to the extent that it justifies hours TIS, measure the thickness of the Proposed Amendment of Class E
making a regulatory distinction; and central housing in accordance with the Airspace; Milwaukee, WI
4. Will not have a significant Compliance Instructions, Part I paragraphs 1
economic impact, positive or negative, and 2, of Bollettino Tecnico No. 139–274, AGENCY: Federal Aviation
on a substantial number of small entities dated September 14, 2016 (BT 139–274). If Administration (FAA), DOT.
the thickness is less than 2.65 mm (0.104 ACTION: Notice of proposed rulemaking
under the criteria of the Regulatory inch), replace the TGB central housing before
Flexibility Act. further flight.
(NPRM).
We prepared an economic evaluation (2) For helicopters with a TGB central SUMMARY: This action proposes to
of the estimated costs to comply with housing with 7500 or more hours TIS, within
300 hours TIS, ultrasonic inspect the TGB in modify the Class E airspace extending
this proposed AD and placed it in the upward from 700 feet above the surface
AD docket. accordance with the Compliance
Instructions, Part II paragraphs 4 through 4.5 at Batten International Airport, Racine,
List of Subjects in 14 CFR Part 39 of BT 139–274. If the thickness is less than WI, contained within the Milwaukee,
2.65 mm (0.104 inch), replace the TGB before WI, airspace description. The FAA is
Air transportation, Aircraft, Aviation further flight. proposing this action due to the
safety, Incorporation by reference, (3) After the effective date of this AD, do decommissioning of the Horlick VHF
Safety. not install a central housing P/N omnidirectional range (VOR), which
3T6522A05144 or 3T6522A05146, all serial
The Proposed Amendment numbers except those listed in Table 1 of BT provided navigation guidance for the
139–274, on any helicopter unless it has instrument procedures to this airport.
Accordingly, under the authority The VOR is being decommissioned as
passed inspection in accordance with
delegated to me by the Administrator, paragraph (e)(1) of this AD. part of the VOR Minimum Operational
the FAA proposes to amend 14 CFR part Network (MON) Program.
39 as follows: (f) Special Flight Permits
DATES: Comments must be received on
Special flight permits are prohibited.
PART 39—AIRWORTHINESS or before November 6, 2017.
(g) Alternative Methods of Compliance ADDRESSES: Send comments on this
DIRECTIVES
(AMOCs)
proposal to the U.S. Department of
■ 1. The authority citation for part 39 (1) The Manager, Safety Management Transportation, Docket Operations,
continues to read as follows: Section, FAA, may approve AMOCs for this West Building Ground Floor, Room
AD. Send your proposal to: Matt Fuller,
Authority: 49 U.S.C. 106(g), 40113, 44701. Senior Aviation Safety Engineer, Safety W12–140, 1200 New Jersey Avenue SE.,
Management Section, Rotorcraft Standards Washington, DC 20590; telephone (202)
§ 39.13 [Amended] Branch, FAA, 10101 Hillwood Pkwy, Fort 366–9826, or (800) 647–5527. You must
■ 2. The FAA amends § 39.13 by adding Worth, TX 76177; telephone (817) 222–5110; identify FAA Docket No. FAA–2017–
the following new airworthiness email 9-ASW-FTW-AMOC-Requests@faa.gov. 0740; Airspace Docket No. 17–AGL–15,
directive (AD): (2) For operations conducted under a 14 at the beginning of your comments. You
CFR part 119 operating certificate or under may also submit comments through the
Agusta S.p.A.: Docket No. FAA–2017– 14 CFR part 91, subpart K, we suggest that
0103; Product Identifier 2016–SW–086–AD.
Internet at http://www.regulations.gov.
you notify your principal inspector, or
lacking a principal inspector, the manager of You may review the public docket
(a) Applicability containing the proposal, any comments
the local flight standards district office or
This AD applies to Agusta S.p.A. Model certificate holding district office before received, and any final disposition in
AB139 and Model AW139 helicopters, operating any aircraft complying with this person in the Dockets Office between
certificated in any category, with a tail AD through an AMOC. 9:00 a.m. and 5:00 p.m., Monday
gearbox (TGB) assembly part number (P/N) through Friday, except federal holidays.
3T6522A00239, 3T6522A00242, (h) Additional Information
FAA Order 7400.11B, Airspace
3T6522A00243, or 3T6522A00246 that has a The subject of this AD is addressed in
central housing P/N 3T6522A05144 or European Aviation Safety Agency (EASA) AD
Designations and Reporting Points, and
3T6522A05146, all serial numbers except No. 2016–0246, dated December 13, 2016. subsequent amendments can be viewed
those listed in Table 1 of Leonardo You may view the EASA AD on the Internet online at http://www.faa.gov/air_traffic/
Helicopters Bollettino Technico No. 139–274, at http://www.regulations.gov in the AD publications/. For further information,
dated September 14, 2016. Docket. you can contact the Airspace Policy
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Document Created: 2017-09-22 01:53:00
Document Modified: 2017-09-22 01:53:00
| Category | Regulatory Information | |
| Collection | Federal Register | |
| sudoc Class | AE 2.7: GS 4.107: AE 2.106: | |
| Publisher | Office of the Federal Register, National Archives and Records Administration | |
| Section | Proposed Rules | |
| Action | Notice of proposed rulemaking (NPRM). | |
| Dates | We must receive comments on this proposed AD by November 21, 2017. | |
| Contact | Matt Fuller, Senior Aviation Safety Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy, Fort Worth, TX 76177; telephone (817) 222-5110; email [email protected] | |
| FR Citation | 82 FR 44363 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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