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Federal Register / Vol. 86, No. 160 / Monday, August 23, 2021 / Proposed Rules
d Subject Air Transport Association ATA of America Code 24, Electrical power.
e Unsafe Condition This AD was prompted by reports of erratic electrical system status on the push button annunciators PBAs and the engine instrument and crew alerting system EICAS, while on-ground and during flight. The FAA
is issuing this AD to address erroneous indications that could mislead pilots, causing them to turn off active electrical power sources, leading to partial or complete loss of electrical power. Loss of electrical power could result in the loss of flight displays and reduced controllability of the airplane.
f Compliance Comply with this AD within the compliance times specified, unless already done.

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g Revision of the Airplane Flight Manual AFM
Within 60 days after the effective date of this AD: Revise the Emergency Procedures and Non-Normal Procedures sections of the existing AFM and applicable corresponding operational procedures to include the information in Section 0319, Electrical, of Chapter 03, Emergency Procedures, and Section 0519, Electrical, of Chapter 05, NonNormal Procedures, of the Bombardier Challenger 300 Imperial Version Airplane Flight Manual, Publication No. CSP 1001, Revision 63, dated April 1, 2021 for airplanes having serial numbers 20003
through 20500 inclusive; or Bombardier Challenger 350 Airplane Flight Manual, Publication No. CH 350 AFM, Revision 29, dated April 1, 2021 for airplanes having serial numbers 20501 through 20999
inclusive; as applicable.
Note 1 to paragraph g: For obtaining the sections for Bombardier Challenger 300
Imperial Version Airplane Flight Manual, Publication No. CSP 1001, use Document Identification No. CH 300 AFMI.
h Credit for Previous Actions This paragraph provides credit for actions required by paragraph g of this AD, if those actions were performed before the effective date of this AD using Section 0319, Electrical, of Chapter 03, Emergency Procedures, and Section 0519, Electrical, of Chapter 05, Non-Normal Procedures, of the Bombardier Challenger 300 Imperial Version Airplane Flight Manual, Publication No. CSP 1001, Revision 62, dated December 22, 2020; or Bombardier Challenger 350
Airplane Flight Manual, Publication No. CH
350 AFM, Revision 28, dated December 22, 2020; as applicable.
Note 2 to paragraph h: For obtaining the sections for Bombardier Challenger 300
Imperial Version Airplane Flight Manual, Publication No. CSP 1001, use Document Identification No. CH 300 AFMI.

Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or responsible Flight Standards Office, as appropriate. If sending information directly to the manager of the certification office, send it to ATTN: Program Manager, Continuing Operational Safety, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 5162287300; fax 5167945531. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office.
2 Contacting the Manufacturer: For any requirement in this AD to obtain instructions from a manufacturer, the instructions must be accomplished using a method approved by the Manager, New York ACO Branch, FAA; or Transport Canada Civil Aviation TCCA; or Bombardier, Inc.s TCCA Design Approval Organization DAO. If approved by the DAO, the approval must include the DAO-authorized signature.
j Related Information 1 Refer to Mandatory Continuing Airworthiness Information MCAI TCCA AD
CF202046, dated November 17, 2020, for related information. This MCAI may be found in the AD docket on the internet at https www.regulations.gov by searching for and locating Docket No. FAA20210691.
2 For more information about this AD, contact Steven Dzierzynski, Aerospace Engineer, Avionics and Electrical Systems Section, FAA, New York ACO Branch, 1600
Stewart Avenue, Suite 410, Westbury, NY
11590; telephone 5162287367; fax 516
7945531; email 9-avs-nyaco-cos@faa.gov.
3 For service information identified in this AD, contact Bombardier, Inc., 200 CoteVertu Road West, Dorval, Quebec H4S 2A3, Canada; North America toll-free telephone 1
8665381247 or direct-dial telephone 1
5148552999; email ac.yul@
aero.bombardier.com; internet https
www.bombardier.com. You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 2062313195.
Issued on August 17, 2021.
Gaetano A. Sciortino, Deputy Director for Strategic Initiatives, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202117943 Filed 82021; 8:45 am BILLING CODE 491013P

i Other FAA AD Provisions The following provisions also apply to this AD:
1 Alternative Methods of Compliance AMOCs: The Manager, New York ACO

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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210688; Project Identifier 2019SW025AD
RIN 2120AA64

Airworthiness Directives; Helicopteres Guimbal Helicopters Federal Aviation Administration FAA, DOT.
ACTION: Notice of proposed rulemaking NPRM.
AGENCY:

The FAA proposes to adopt a new airworthiness directive AD for Helicopteres Guimbal HG Model Cabri G2 helicopters. This proposed AD was prompted by the determination that certain parts need life limits and certification maintenance requirement CMR tasks. This proposed AD would require establishing life limits and CMR
tasks for various parts and removing any parts from service that have reached or exceeded their life limits. Depending on the results of the CMR tasks, this proposed AD would require corrective action. The FAA is proposing this AD to address the unsafe condition on these products.
SUMMARY:

The FAA must receive comments on this proposed AD by October 7, 2021.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to https www.regulations.gov. Follow the instructions for submitting comments.
Fax: 202 4932251.
Mail: U.S. Department of Transportation, Docket Operations, M
30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
Hand Delivery: Deliver to Mail address between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays.
For service information identified in this NPRM, contact Helicopteres Guimbal, Basile Ginel, 1070, rue du Lieutenant Parayre, Aerodrome dAixen-Provence, 13290 Les Milles, France;
telephone 330442391088; email basile.ginel@guimbal.com; web https
www.guimbal.com. You may view this service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 817 222
5110.
DATES:

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