82 FR 25742 - Airworthiness Directives; Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System Units
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 82, Issue 106 (June 5, 2017)
Federal Aviation Administration
Federal Register Volume 82, Issue 106 (June 5, 2017)
| Page Range | 25742-25744 | |
| FR Document | 2017-11132 |
[Federal Register Volume 82, Number 106 (Monday, June 5, 2017)] [Proposed Rules] [Pages 25742-25744] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2017-11132] ======================================================================== Proposed Rules Federal Register ________________________________________________________________________ This section of the FEDERAL REGISTER contains notices to the public of the proposed issuance of rules and regulations. The purpose of these notices is to give interested persons an opportunity to participate in the rule making prior to the adoption of the final rules. ======================================================================== Federal Register / Vol. 82, No. 106 / Monday, June 5, 2017 / Proposed Rules [[Page 25742]] DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2017-0522; Directorate Identifier 2015-SW-068-AD] RIN 2120-AA64 Airworthiness Directives; Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System Units AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). ----------------------------------------------------------------------- SUMMARY: We propose to adopt a new airworthiness directive (AD) for Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System (AHRS) units installed on various aircraft. This proposed AD would require removing certain LCR-100 AHRS units from service. This proposed AD is prompted by test results showing loss of or invalid data. The proposed actions are intended to prevent an unsafe condition on these products. DATES: We must receive comments on this proposed AD by August 4, 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- 0522; 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. For service information identified in this proposed rule, contact Northrop Grumman LITEF GmbH, Customer Service--Commercial Avionics, Loerracher Str. 18, 79115 Freiburg, Germany; telephone +49 (761) 4901- 142; fax +49 (761) 4901-773; email [email protected]. 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: Nick Rediess, Aviation Safety Engineer, Boston Aircraft Certification Office, Engine & Propeller Directorate, 1200 District Avenue, Burlington, Massachusetts 01803; telephone (781) 238-7159; 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 We propose to adopt a new AD for Northrop Grumman LITEF GmbH LCR- 100 AHRS units with a part number 145130-2000, 145130-2001, 145130- 7000, 145130-7001, or 145130-7100. These units are installed on various airplanes and helicopters and are often used to supply attitude and heading data to Primary Flight Displays (PFDs), autopilots, and other avionics. These units may be installed as part of a type-certificated design, an FAA supplemental type certificate, or a field approval. Northrop Grumman LITEF GmbH discovered the erroneous behavior of an AHRS unit during laboratory testing. The erroneous behavior occurs when the unit's continuous built-in test detects a failure and then does not correctly reset. When this occurs, the analog outputs of attitude and heading data freeze and the transmission of digital outputs of attitude and heading stops. The effect of the errors depends on how the AHRS unit outputs are used in a particular installation. For instance, if the AHRS unit analog outputs are used by a PFD without any automatic comparison with another source of data, the PFD will display misleading information, which could lead to loss of control of the aircraft. Other installations using the analog outputs might include an automatic comparison feature that detects and provides an alert if the attitude and heading data is frozen. A similar situation would occur in installations that use the digital outputs since the erroneous behavior would be detected. This proposed AD would only be applicable to installations of the AHRS units using analog outputs for the display of primary flight information or for input to an autopilot without automatic output comparison since these installations do not provide any warning indication of the erroneous behavior. [[Page 25743]] EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD No. 2015-0093, dated May 27, 2015, to correct an unsafe condition for certain part-numbered Northrop Grumman LITEF GmbH LCR-100 AHRS units. EASA states these units are known to be installed on, but not limited to, Pilatus PC-12, Learjet 31A, Cessna 560XL, RUAG (Dornier) 228 series, and PZL Mielec M28 (Sky Truck) airplanes; and Bell Helicopter Textron, Inc., 412EP, Bell Helicopter Textron Canada 407, and Sikorsky S-76C helicopters. EASA advises that laboratory tests of the AHRS units discovered that when the built-in test detects failures and resets the system, the units are not executing the system reset properly. According to EASA, this results in a freeze of analog attitude and heading output data without detection or warning to the pilot. EASA states that installations vary, but if there is no automatic comparison of analog output to detect unit failure, this condition, if not corrected, could lead to undetected attitude and heading errors, possibly resulting in loss of control of the aircraft. This proposed AD would also affect AD 2010-26-09 (75 FR 81424, December 28, 2010), which applies to Sikorsky Model S-76A, B, and C helicopters with an AHRS unit P/N 145130-7100 installed. Since this proposed AD would require the removal of P/N 145130-7100, compliance with this AD would make AD 2010-26-09 no longer valid for those Sikorsky helicopters. FAA's Determination We are proposing this AD because we evaluated all known relevant information and determined that an unsafe condition exists and is likely to exist or develop on other products of this same type design. Related Service Information We reviewed Northrop Grumman LITEF GmbH Service Bulletin No. 145130-0017-845, Revision D, dated April 1, 2015 (SB 145130-0017-845). SB 145130-0017-845 specifies returning the applicable part numbered AHRS units to certain repair stations for modification. The modified AHRS units, which have new part numbers, have an additional watchdog circuit in the electronic board that eliminates frozen analog outputs and digital output interruptions. Proposed AD Requirements This proposed AD would require removing certain part-numbered LCR- 100 AHRS units that use analog outputs for primary flight information display or autopilot functions without automatic output comparison from service. This proposed AD would also prohibit installing those LCR-100 AHRS units on any aircraft. Differences Between This Proposed AD and the EASA AD This proposed AD would only apply to certain part-numbered AHRS units that use analog outputs for primary flight information display or autopilot functions without automatic output comparison. The EASA AD applies to all of these part-numbered units regardless of the type of installation. The EASA AD requires inserting a temporary revision into the flight manual for analog without automatic output comparison installations until the AHRS unit is replaced with a modified unit. This proposed AD would not require temporarily revising the flight manual. The EASA AD requires replacing the AHRS units with particular part-numbered modified units, while this proposed AD would require removing the AHRS units from service instead. Costs of Compliance We estimate that this proposed AD would affect 50 aircraft of U.S. Registry. We estimate that operators may incur the following costs in order to comply with this AD. Labor costs are estimated at $85 per work-hour, and typical installations consist of two AHRS units. Replacing two AHRS units would take about 4 work-hours and $62,630 for required parts, for a total cost of $62,970 per aircraft and $3,148,500 for the U.S. fleet. 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 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): Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System: Docket No. FAA-2017-0522; Directorate Identifier 2015-SW- 068-AD. (a) Applicability This AD applies to airplanes and helicopters, certificated in any category, with a Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System (AHRS) unit part number (P/N) 145130- 2000, 145130-2001, 145130-7000, 145130-7001, or 145130-7100 installed using analog outputs for primary flight information display or [[Page 25744]] autopilot functions without automatic output comparison. Aircraft known to have the subject AHRS units installed include but are not limited to the following: (1) Dornier Luftfahrt GmbH Model 228-100, 228-101, 228-200, 228- 201, 228-202, and 228-212 airplanes; (2) Learjet Inc. Model 31A airplanes; (3) Pilatus Aircraft Ltd. Model PC12, PC-12/45, and PC-12/47 airplanes; (4) Polskie Zaklady Lotnicze Sp. z o.o. Model PZL M28 05 airplanes; (5) Textron Aviation Inc. (type certificate previously held by Cessna Aircraft Company) Model 560XL airplanes; (6) Bell Helicopter Textron Canada Limited Model 407 helicopters; (7) Bell Helicopter Textron Inc. Model 412 and 412EP helicopters; and (8) Sikorsky Aircraft Corporation Model S-76A, S-76-B, and S-76C helicopters. (b) Unsafe Condition This AD defines the unsafe condition as the AHRS unit's analog outputs of attitude and heading data freezing without detection or warning. This condition could result in misleading attitude and heading information, anomalous autopilot behavior, and loss of control of the aircraft. (c) Affected ADs This AD affects AD 2010-26-09, Amendment 39-16548 (75 FR 81424, December 28, 2010). Accomplishing a certain requirement of this AD terminates the requirements of AD 2010-26-09. (d) Comments Due Date We must receive comments by August 4, 2017. (e) 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. (f) Required Actions (1) Within 25 hours time-in-service (TIS), remove the AHRS unit from service. (2) Removal from service of P/N 145130-7100 terminates the requirements of AD 2010-26-09 (75 FR 81424, December 28, 2010). (3) Do not install an AHRS unit P/N 145130-2000, 145130-2001, 145130-7000, 145130-7001, or 145130-7100 on any aircraft. (g) Alternative Methods of Compliance (AMOCs) (1) The Manager, Boston Aircraft Certification Office, FAA, may approve AMOCs for this AD. Send your proposal to: Nick Rediess, Aviation Safety Engineer, Boston Aircraft Certification Office, Engine & Propeller Directorate, 1200 District Avenue, Burlington, Massachusetts 01803; telephone (781) 238-7159; 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 (1) Northrop Grumman LITEF GmbH Service Bulletin No. 145130- 0017-845, Revision D, dated April 1, 2015, which is not incorporated by reference, contains additional information about the subject of this AD. For service information identified in this AD, contact Northrop Grumman LITEF GmbH, Customer Service--Commercial Avionics, Loerracher Str. 18, 79115 Freiburg, Germany; telephone +49 (761) 4901-142; fax +49 (761) 4901-773; email [email protected]. 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. (2) The subject of this AD is addressed in European Aviation Safety Agency (EASA) AD No. 2015-0093, dated May 27, 2015. 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: 3420, Attitude and Directional Data System. Issued in Fort Worth, Texas, on May 19, 2017. Scott A. Horn, Acting Manager, Rotorcraft Directorate, Aircraft Certification Service. [FR Doc. 2017-11132 Filed 6-2-17; 8:45 am] BILLING CODE 4910-13-P
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Proposed Rules Federal Register
Vol. 82, No. 106
Monday, June 5, 2017
This section of the FEDERAL REGISTER Examining the AD Docket public contact with FAA personnel
contains notices to the public of the proposed concerning this proposed rulemaking.
You may examine the AD docket on
issuance of rules and regulations. The Before acting on this proposal, we will
purpose of these notices is to give interested the Internet at http://
www.regulations.gov by searching for consider all comments we receive on or
persons an opportunity to participate in the before the closing date for comments.
rule making prior to the adoption of the final and locating Docket No. FAA–2017–
rules. 0522; or in person at the Docket We will consider comments filed after
Operations Office between 9 a.m. and 5 the comment period has closed if it is
p.m., Monday through Friday, except possible to do so without incurring
DEPARTMENT OF TRANSPORTATION Federal holidays. The AD docket expense or delay. We may change this
contains this proposed AD, the proposal in light of the comments we
Federal Aviation Administration European Aviation Safety Agency receive.
(EASA) AD, the economic evaluation, Discussion
14 CFR Part 39 any comments received, and other
information. The street address for the We propose to adopt a new AD for
[Docket No. FAA–2017–0522; Directorate Docket Operations Office (telephone Northrop Grumman LITEF GmbH LCR–
Identifier 2015–SW–068–AD] 800–647–5527) is in the ADDRESSES 100 AHRS units with a part number
section. Comments will be available in 145130–2000, 145130–2001, 145130–
RIN 2120–AA64 the AD docket shortly after receipt. 7000, 145130–7001, or 145130–7100.
For service information identified in These units are installed on various
Airworthiness Directives; Northrop this proposed rule, contact Northrop airplanes and helicopters and are often
Grumman LITEF GmbH LCR–100 Grumman LITEF GmbH, Customer used to supply attitude and heading
Attitude and Heading Reference Service—Commercial Avionics, data to Primary Flight Displays (PFDs),
System Units Loerracher Str. 18, 79115 Freiburg, autopilots, and other avionics. These
Germany; telephone +49 (761) 4901– units may be installed as part of a type-
AGENCY: Federal Aviation 142; fax +49 (761) 4901–773; email certificated design, an FAA
Administration (FAA), DOT. ahrs.support@ng-litef.de. You may supplemental type certificate, or a field
ACTION: Notice of proposed rulemaking review the referenced service approval. Northrop Grumman LITEF
(NPRM). information at the FAA, Office of the GmbH discovered the erroneous
Regional Counsel, Southwest Region, behavior of an AHRS unit during
SUMMARY: We propose to adopt a new 10101 Hillwood Pkwy, Room 6N–321, laboratory testing. The erroneous
airworthiness directive (AD) for Fort Worth, TX 76177. behavior occurs when the unit’s
Northrop Grumman LITEF GmbH LCR– FOR FURTHER INFORMATION CONTACT: Nick continuous built-in test detects a failure
100 Attitude and Heading Reference Rediess, Aviation Safety Engineer, and then does not correctly reset. When
System (AHRS) units installed on Boston Aircraft Certification Office, this occurs, the analog outputs of
various aircraft. This proposed AD Engine & Propeller Directorate, 1200 attitude and heading data freeze and the
would require removing certain LCR– District Avenue, Burlington, transmission of digital outputs of
100 AHRS units from service. This Massachusetts 01803; telephone (781) attitude and heading stops. The effect of
proposed AD is prompted by test results 238–7159; email nicholas.rediess@ the errors depends on how the AHRS
showing loss of or invalid data. The faa.gov. unit outputs are used in a particular
proposed actions are intended to SUPPLEMENTARY INFORMATION: installation. For instance, if the AHRS
prevent an unsafe condition on these unit analog outputs are used by a PFD
products. Comments Invited without any automatic comparison with
DATES: We must receive comments on We invite you to participate in this another source of data, the PFD will
this proposed AD by August 4, 2017. rulemaking by submitting written display misleading information, which
comments, data, or views. We also could lead to loss of control of the
ADDRESSES: You may send comments by aircraft. Other installations using the
invite comments relating to the
any of the following methods: economic, environmental, energy, or analog outputs might include an
• Federal eRulemaking Docket: Go to federalism impacts that might result automatic comparison feature that
http://www.regulations.gov. Follow the from adopting the proposals in this detects and provides an alert if the
online instructions for sending your document. The most helpful comments attitude and heading data is frozen. A
comments electronically. reference a specific portion of the similar situation would occur in
• Fax: 202–493–2251. proposal, explain the reason for any installations that use the digital outputs
• Mail: Send comments to the U.S. recommended change, and include since the erroneous behavior would be
Department of Transportation, Docket supporting data. To ensure the docket detected. This proposed AD would only
nlaroche on DSK30NT082PROD with PROPOSALS
Operations, M–30, West Building does not contain duplicate comments, be applicable to installations of the
Ground Floor, Room W12–140, 1200 commenters should send only one copy AHRS units using analog outputs for the
New Jersey Avenue SE., Washington, of written comments, or if comments are display of primary flight information or
DC 20590–0001. filed electronically, commenters should for input to an autopilot without
• Hand Delivery: Deliver to the submit only one time. automatic output comparison since
‘‘Mail’’ address between 9 a.m. and 5 We will file in the docket all these installations do not provide any
p.m., Monday through Friday, except comments that we receive, as well as a warning indication of the erroneous
Federal holidays. report summarizing each substantive behavior.
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EASA, which is the Technical Agent 100 AHRS units that use analog outputs products identified in this rulemaking
for the Member States of the European for primary flight information display or action.
Union, has issued EASA AD No. 2015– autopilot functions without automatic
Regulatory Findings
0093, dated May 27, 2015, to correct an output comparison from service. This
unsafe condition for certain part- proposed AD would also prohibit We determined that this proposed AD
numbered Northrop Grumman LITEF installing those LCR–100 AHRS units on would not have federalism implications
GmbH LCR–100 AHRS units. EASA any aircraft. under Executive Order 13132. This
states these units are known to be proposed AD would not have a
installed on, but not limited to, Pilatus Differences Between This Proposed AD substantial direct effect on the States, on
PC–12, Learjet 31A, Cessna 560XL, and the EASA AD the relationship between the national
RUAG (Dornier) 228 series, and PZL This proposed AD would only apply Government and the States, or on the
Mielec M28 (Sky Truck) airplanes; and to certain part-numbered AHRS units distribution of power and
Bell Helicopter Textron, Inc., 412EP, that use analog outputs for primary responsibilities among the various
Bell Helicopter Textron Canada 407, flight information display or autopilot levels of government.
and Sikorsky S–76C helicopters. EASA functions without automatic output For the reasons discussed, I certify
advises that laboratory tests of the comparison. The EASA AD applies to this proposed regulation:
AHRS units discovered that when the all of these part-numbered units 1. Is not a ‘‘significant regulatory
built-in test detects failures and resets regardless of the type of installation. action’’ under Executive Order 12866;
the system, the units are not executing The EASA AD requires inserting a 2. Is not a ‘‘significant rule’’ under the
the system reset properly. According to temporary revision into the flight DOT Regulatory Policies and Procedures
EASA, this results in a freeze of analog manual for analog without automatic (44 FR 11034, February 26, 1979);
attitude and heading output data output comparison installations until 3. Will not affect intrastate aviation in
without detection or warning to the the AHRS unit is replaced with a Alaska to the extent that it justifies
pilot. EASA states that installations modified unit. This proposed AD would making a regulatory distinction; and
vary, but if there is no automatic not require temporarily revising the 4. Will not have a significant
comparison of analog output to detect flight manual. The EASA AD requires economic impact, positive or negative,
unit failure, this condition, if not replacing the AHRS units with on a substantial number of small entities
corrected, could lead to undetected particular part-numbered modified under the criteria of the Regulatory
attitude and heading errors, possibly units, while this proposed AD would Flexibility Act.
resulting in loss of control of the require removing the AHRS units from We prepared an economic evaluation
aircraft. service instead. of the estimated costs to comply with
This proposed AD would also affect this proposed AD and placed it in the
AD 2010–26–09 (75 FR 81424, Costs of Compliance AD docket.
December 28, 2010), which applies to We estimate that this proposed AD List of Subjects in 14 CFR Part 39
Sikorsky Model S–76A, B, and C would affect 50 aircraft of U.S. Registry.
helicopters with an AHRS unit P/N We estimate that operators may incur Air transportation, Aircraft, Aviation
145130–7100 installed. Since this the following costs in order to comply safety, Incorporation by reference,
proposed AD would require the removal with this AD. Labor costs are estimated Safety.
of P/N 145130–7100, compliance with at $85 per work-hour, and typical The Proposed Amendment
this AD would make AD 2010–26–09 no installations consist of two AHRS units.
longer valid for those Sikorsky Accordingly, under the authority
Replacing two AHRS units would take
helicopters. delegated to me by the Administrator,
about 4 work-hours and $62,630 for
the FAA proposes to amend 14 CFR part
FAA’s Determination required parts, for a total cost of $62,970
39 as follows:
per aircraft and $3,148,500 for the U.S.
We are proposing this AD because we
fleet. PART 39—AIRWORTHINESS
evaluated all known relevant
information and determined that an Authority for This Rulemaking DIRECTIVES
unsafe condition exists and is likely to
Title 49 of the United States Code ■ 1. The authority citation for part 39
exist or develop on other products of
specifies the FAA’s authority to issue continues to read as follows:
this same type design.
rules on aviation safety. Subtitle I, Authority: 49 U.S.C. 106(g), 40113, 44701.
Related Service Information section 106, describes the authority of
We reviewed Northrop Grumman the FAA Administrator. ‘‘Subtitle VII: § 39.13 [Amended]
LITEF GmbH Service Bulletin No. Aviation Programs,’’ describes in more ■ 2. The FAA amends § 39.13 by adding
145130–0017–845, Revision D, dated detail the scope of the Agency’s the following new airworthiness
April 1, 2015 (SB 145130–0017–845). authority. directive (AD):
SB 145130–0017–845 specifies We are issuing this rulemaking under Northrop Grumman LITEF GmbH LCR–100
returning the applicable part numbered the authority described in ‘‘Subtitle VII, Attitude and Heading Reference System:
AHRS units to certain repair stations for Part A, Subpart III, Section 44701: Docket No. FAA–2017–0522; Directorate
modification. The modified AHRS units, General requirements.’’ Under that Identifier 2015–SW–068–AD.
which have new part numbers, have an section, Congress charges the FAA with
(a) Applicability
nlaroche on DSK30NT082PROD with PROPOSALS
additional watchdog circuit in the promoting safe flight of civil aircraft in
air commerce by prescribing regulations This AD applies to airplanes and
electronic board that eliminates frozen helicopters, certificated in any category, with
analog outputs and digital output for practices, methods, and procedures
a Northrop Grumman LITEF GmbH LCR–100
interruptions. the Administrator finds necessary for Attitude and Heading Reference System
safety in air commerce. This regulation (AHRS) unit part number (P/N) 145130–2000,
Proposed AD Requirements is within the scope of that authority 145130–2001, 145130–7000, 145130–7001, or
This proposed AD would require because it addresses an unsafe condition 145130–7100 installed using analog outputs
removing certain part-numbered LCR– that is likely to exist or develop on for primary flight information display or
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autopilot functions without automatic output certificate holding district office before ADDRESSES: You may send comments,
comparison. Aircraft known to have the operating any aircraft complying with this using the procedures found in 14 CFR
subject AHRS units installed include but are AD through an AMOC. 11.43 and 11.45, by any of the following
not limited to the following:
(h) Additional Information methods:
(1) Dornier Luftfahrt GmbH Model 228–
100, 228–101, 228–200, 228–201, 228–202, (1) Northrop Grumman LITEF GmbH • Federal eRulemaking Portal: Go to
and 228–212 airplanes; Service Bulletin No. 145130–0017–845, http://www.regulations.gov. Follow the
(2) Learjet Inc. Model 31A airplanes; Revision D, dated April 1, 2015, which is not instructions for submitting comments.
(3) Pilatus Aircraft Ltd. Model PC12, PC– incorporated by reference, contains • Fax: 202–493–2251.
12/45, and PC–12/47 airplanes; additional information about the subject of • Mail: U.S. Department of
(4) Polskie Zaklady Lotnicze Sp. z o.o. this AD. For service information identified in Transportation, Docket Operations, M–
Model PZL M28 05 airplanes; this AD, contact Northrop Grumman LITEF
GmbH, Customer Service—Commercial 30, West Building Ground Floor, Room
(5) Textron Aviation Inc. (type certificate
Avionics, Loerracher Str. 18, 79115 Freiburg, W12–140, 1200 New Jersey Avenue SE.,
previously held by Cessna Aircraft Company)
Model 560XL airplanes; Germany; telephone +49 (761) 4901–142; fax Washington, DC 20590.
(6) Bell Helicopter Textron Canada Limited +49 (761) 4901–773; email ahrs.support@ng- • Hand Delivery: Deliver to Mail
Model 407 helicopters; litef.de. You may review the referenced address above between 9 a.m. and 5
(7) Bell Helicopter Textron Inc. Model 412 service information at the FAA, Office of the p.m., Monday through Friday, except
and 412EP helicopters; and Regional Counsel, Southwest Region, 10101 Federal holidays.
(8) Sikorsky Aircraft Corporation Model S– Hillwood Pkwy, Room 6N–321, Fort Worth,
TX 76177.
For service information identified in
76A, S–76–B, and S–76C helicopters. this NPRM, contact Boeing Commercial
(2) The subject of this AD is addressed in
(b) Unsafe Condition European Aviation Safety Agency (EASA) AD Airplanes, Attention: Contractual & Data
This AD defines the unsafe condition as No. 2015–0093, dated May 27, 2015. You Services (C&DS), 2600 Westminster
the AHRS unit’s analog outputs of attitude may view the EASA AD on the Internet at Blvd., MC 110–SK57, Seal Beach, CA
and heading data freezing without detection http://www.regulations.gov in the AD Docket. 90740; telephone 562–797–1717;
or warning. This condition could result in (i) Subject Internet https://
misleading attitude and heading information, www.myboeingfleet.com. You may view
anomalous autopilot behavior, and loss of Joint Aircraft Service Component (JASC)
Code: 3420, Attitude and Directional Data this referenced service information at
control of the aircraft. the FAA, Transport Airplane
System.
(c) Affected ADs Directorate, 1601 Lind Avenue SW.,
Issued in Fort Worth, Texas, on May 19,
This AD affects AD 2010–26–09, 2017. Renton, WA. For information on the
Amendment 39–16548 (75 FR 81424, Scott A. Horn,
availability of this material at the FAA,
December 28, 2010). Accomplishing a certain call 425–227–1221. It is also available
requirement of this AD terminates the Acting Manager, Rotorcraft Directorate,
Aircraft Certification Service.
on the Internet at http://
requirements of AD 2010–26–09. www.regulations.gov by searching for
[FR Doc. 2017–11132 Filed 6–2–17; 8:45 am]
(d) Comments Due Date and locating Docket No. FAA–2017–
BILLING CODE 4910–13–P
We must receive comments by August 4, 0526.
2017. Examining the AD Docket
(e) Compliance DEPARTMENT OF TRANSPORTATION You may examine the AD docket on
You are responsible for performing each the Internet at http://
action required by this AD within the
Federal Aviation Administration
www.regulations.gov by searching for
specified compliance time unless it has and locating Docket No. FAA–2017–
already been accomplished prior to that time. 14 CFR Part 39
0526; or in person at the Docket
(f) Required Actions [Docket No. FAA–2017–0526; Directorate Management Facility between 9 a.m.
Identifier 2017–NM–026–AD] and 5 p.m., Monday through Friday,
(1) Within 25 hours time-in-service (TIS),
remove the AHRS unit from service. RIN 2120–AA64 except Federal holidays. The AD docket
(2) Removal from service of P/N 145130– contains this proposed AD, the
7100 terminates the requirements of AD Airworthiness Directives; The Boeing regulatory evaluation, any comments
2010–26–09 (75 FR 81424, December 28, Company Airplanes received, and other information. The
2010).
AGENCY: Federal Aviation street address for the Docket Office
(3) Do not install an AHRS unit P/N
145130–2000, 145130–2001, 145130–7000, Administration (FAA), DOT. (phone: 800–647–5527) is in the
145130–7001, or 145130–7100 on any ADDRESSES section. Comments will be
ACTION: Notice of proposed rulemaking
aircraft. available in the AD docket shortly after
(NPRM).
receipt.
(g) Alternative Methods of Compliance
(AMOCs) SUMMARY: We propose to adopt a new FOR FURTHER INFORMATION CONTACT:
airworthiness directive (AD) for all The Payman Soltani, Aerospace Engineer,
(1) The Manager, Boston Aircraft
Certification Office, FAA, may approve
Boeing Company Model 737–100, –200, Airframe Branch, ANM–120L, FAA, Los
AMOCs for this AD. Send your proposal to: –200C, –300, –400, and –500 series Angeles Aircraft Certification Office
Nick Rediess, Aviation Safety Engineer, airplanes. This proposed AD was (ACO), 3960 Paramount Boulevard,
Boston Aircraft Certification Office, Engine & prompted by reports of cracking in the Lakewood, CA 90712–4137; phone:
Propeller Directorate, 1200 District Avenue, upper aft skin at the rear spar of the 562–627–5313; fax: 562–627–5210;
nlaroche on DSK30NT082PROD with PROPOSALS
Burlington, Massachusetts 01803; telephone wings. This proposed AD would require email: payman.soltani@faa.gov.
(781) 238–7159; email nicholas.rediess@ repetitive inspections for cracking of the SUPPLEMENTARY INFORMATION:
faa.gov. upper aft skin of the wings, and repair
(2) For operations conducted under a 14 if necessary. We are proposing this AD Comments Invited
CFR part 119 operating certificate or under
14 CFR part 91, subpart K, we suggest that
to address the unsafe condition on these We invite you to send any written
you notify your principal inspector, or products. relevant data, views, or arguments about
lacking a principal inspector, the manager of DATES: We must receive comments on this proposed AD. Send your comments
the local flight standards district office or this proposed AD by July 20, 2017. to an address listed under the
VerDate Sep<11>2014 13:57 Jun 02, 2017 Jkt 241001 PO 00000 Frm 00003 Fmt 4702 Sfmt 4702 E:\FR\FM\05JNP1.SGM 05JNP1](https://thefederalregister.org/doc/82_FR_25848/page/3.svg)
Document Created: 2018-11-14 10:01:28
Document Modified: 2018-11-14 10:01:28
| 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 August 4, 2017. | |
| Contact | Nick Rediess, Aviation Safety Engineer, Boston Aircraft Certification Office, Engine & Propeller Directorate, 1200 District Avenue, Burlington, Massachusetts 01803; telephone (781) 238-7159; email [email protected] | |
| FR Citation | 82 FR 25742 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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