47036 Federal Register / Vol. 86, No. 160 / Monday, August 23, 2021 / Proposed Rules 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0691; Project 

Identifier MCAI–2020–01542–T] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc., Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for 

certain Bombardier, Inc., Model BD– 

100–1A10 airplanes. This proposed 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). This proposed AD 

would require revising the existing 

airplane flight manual (AFM) and 

applicable corresponding operational 

procedures to incorporate procedures to 

be applied during erroneous electrical 

status indication conditions. The FAA is 

proposing this AD to address the unsafe 

condition on these products. 

DATES: 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: 202–493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE, 

Washington, DC 20590. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this NPRM, contact Bombardier, Inc., 

200 Coˆte-Vertu Road West, Dorval, 

Que ́bec H4S 2A3, Canada; North 

America toll-free telephone 1–866–538– 

1247 or direct-dial telephone 1–514– 

855–2999; 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 206–231–3195. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0691; or in person at Docket 

Operations between 9 a.m. and 5 p.m., 

Monday through Friday, except Federal 

holidays. The AD docket contains this 

NPRM, any comments received, and 

other information. The street address for 

Docket Operations is listed above. 

FOR FURTHER INFORMATION CONTACT: 

Steven Dzierzynski, Aerospace 

Engineer, Avionics and Electrical 

Systems Section, FAA, New York ACO 

Branch, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; telephone 

516–228–7367; fax 516–794–5531; email 

9-avs-nyaco-cos@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

The FAA invites you to send any 

written relevant data, views, or 

arguments about this proposal. Send 

your comments to an address listed 

under ADDRESSES. Include ‘‘Docket No. 

FAA–2021–0691; Project Identifier 

MCAI–2020–01542–T’’ at the beginning 

of your comments. The most helpful 

comments reference a specific portion of 

the proposal, explain the reason for any 

recommended change, and include 

supporting data. The FAA will consider 

all comments received by the closing 

date and may amend the proposal 

because of those comments. 

Except for Confidential Business 

Information (CBI) as described in the 

following paragraph, and other 

information as described in 14 CFR 

11.35, the FAA will post all comments 

received, without change, to https://

www.regulations.gov, including any 

personal information you provide. The 

agency will also post a report 

summarizing each substantive verbal 

contact received about this NPRM. 

Confidential Business Information 

CBI is commercial or financial 

information that is both customarily and 

actually treated as private by its owner. 

Under the Freedom of Information Act 

(FOIA) (5 U.S.C. 552), CBI is exempt 

from public disclosure. If your 

comments responsive to this NPRM 

contain commercial or financial 

information that is customarily treated 

as private, that you actually treat as 

private, and that is relevant or 

responsive to this NPRM, it is important 

that you clearly designate the submitted 

comments as CBI. Please mark each 

page of your submission containing CBI 

as ‘‘PROPIN.’’ The FAA will treat such 

marked submissions as confidential 

under the FOIA, and they will not be 

placed in the public docket of this 

NPRM. Submissions containing CBI 

should be sent to Steven Dzierzynski, 

Aerospace Engineer, Avionics and 

Electrical Systems Section, FAA, New 

York ACO Branch, 1600 Stewart 

Avenue, Suite 410, Westbury, NY 

11590; telephone 516–228–7367; fax 

516–794–5531; email 9-avs-nyaco-cos@

faa.gov. Any commentary that the FAA 

receives which is not specifically 

designated as CBI will be placed in the 

public docket for this rulemaking. 

Background 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued TCCA AD CF– 

2020–46, dated November 17, 2020 

(TCCA AD CF–2020–46) (also referred 

to after this as the Mandatory 

Continuing Airworthiness Information, 

or the MCAI), to correct an unsafe 

condition for certain Bombardier, Inc., 

Model BD–100–1A10 airplanes. You 

may examine the MCAI in the AD 

docket at https://www.regulations.gov 

by searching for and locating Docket No. 

FAA–2021–0691. 

This proposed AD was prompted by 

reports of erratic electrical system status 

on the PBA and the EICAS, while onground and during flight. Some of those 

incidents resulted in the airplane 

experiencing momentary loss of 

electrical power and loss of flight 

displays following flightcrew actions. 

The FAA is proposing 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. See the MCAI for 

additional background information. 

Related Service Information Under 1 

CFR Part 51 

Bombardier has issued the following 

sections of the applicable AFMs. This 

service information provides procedures 

to inform the pilots not to turn off active 

generators in the event of an erroneous 

electrical status indication. 

• Section 03–19, Electrical, of 

Chapter 03, Emergency Procedures, of 

the Bombardier Challenger 300 

(Imperial Version) Airplane Flight 

Manual, Publication No. CSP 100–1, 

Revision 63, dated April 1, 2021. (For 

obtaining this section of the Bombardier 

Challenger 300 (Imperial Version) 

Airplane Flight Manual, Publication No. 

CSP 100–1, use Document Identification 

No. CH 300 AFM–I.) 

• Section 05–19, Electrical, of 

Chapter 05, Non-Normal Procedures, of 


jbell on DSKJLSW7X2PROD with PROPOSALS
Federal Register / Vol. 86, No. 160 / Monday, August 23, 2021 / Proposed Rules 47037 

the Bombardier Challenger 300 

(Imperial Version) Airplane Flight 

Manual, Publication No. CSP 100–1, 

Revision 63, dated April 1, 2021. (For 

obtaining this section of the Bombardier 

Challenger 300 (Imperial Version) 

Airplane Flight Manual, Publication No. 

CSP 100–1, use Document Identification 

No. CH 300 AFM–I.) 

• Section 03–19, Electrical, of 

Chapter 03, Emergency Procedures, of 

the Bombardier Challenger 350 Airplane 

Flight Manual, Publication No. CH 350 

AFM, Revision 29, dated April 1, 2021. 

• Section 05–19, Electrical, of 

Chapter 05, Non-Normal Procedures, of 

the Bombardier Challenger 350 Airplane 

Flight Manual, Publication No. CH 350 

AFM, Revision 29, dated April 1, 2021. 

These documents are distinct since 

they apply to different airplane 

configurations. 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. 

FAA’s Determination 

This product has been approved by 

the aviation authority of another 

country, and is approved for operation 

in the United States. Pursuant to the 

FAA’s bilateral agreement with the State 

of Design Authority, the FAA has been 

notified of the unsafe condition 

described in the MCAI and service 

information referenced above. The FAA 

is proposing this AD because the FAA 

evaluated all the relevant information 

and determined the unsafe condition 

described previously is likely to exist or 

develop on other products of the same 

type design. 

Proposed AD Requirements in This 

NPRM 

This proposed AD would require 

revising the existing AFM and 

applicable corresponding operational 

procedures to incorporate procedures to 

be applied during erroneous electrical 

status indication conditions. 

Explanation of Incorporating 

Information Specified in an AFM 

Revision 

This proposed AD would require 

including the information that is 

provided in the referenced AFM 

revisions in paragraph (g) of this 

proposed AD. The language in 

paragraph (g) of this proposed AD is 

designed to allow incorporating the 

specific information, regardless of the 

revision level of the AFM in use, 

provided the language is identical to the 

referenced AFM revisions specified in 

paragraph (g) of this proposed AD. The 

language in a later revision of the 

Bombardier Challenger 300 (Imperial 

Version) Airplane Flight Manual, 

Publication No. CSP 100–1 that is the 

same as the language in Bombardier 

Challenger 300 (Imperial Version) 

Airplane Flight Manual, Publication No. 

CSP 100–1, Revision 63, dated April 1, 

2021; or in a later revision of the 

Bombardier Challenger 350 Airplane 

Flight Manual, Publication No. CH 350 

AFM that is the same as the language in 

Bombardier Challenger 350 Airplane 

Flight Manual, Publication No. CH 350 

AFM, Revision 29, dated April 1, 2021; 

may be incorporated. 

Costs of Compliance 

The FAA estimates that this AD, if 

adopted as proposed, would affect 275 

airplanes of U.S. registry. The FAA 

estimates the following costs to comply 

with this proposed AD: 

ESTIMATED COSTS FOR REQUIRED ACTIONS

Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

1 work-hour × $85 per hour = $85 .............................................................................................. $0 $85 $23,375 

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. 

The FAA is 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 

The FAA 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 above, I 

certify this proposed regulation: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Would not affect intrastate 

aviation in Alaska, and 

(3) Would not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

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 

■ 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: 

Bombardier, Inc.: Docket No. FAA–2021– 

0691; Project Identifier MCAI–2020– 

01542–T. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by October 7, 

2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Bombardier, Inc., 

Model BD–100–1A10 airplanes, certificated 

in any category, serial numbers 20003 and 

subsequent. 


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47038 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. 

(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 03–19, Electrical, of 

Chapter 03, Emergency Procedures, and 

Section 05–19, Electrical, of Chapter 05, NonNormal Procedures, of the Bombardier 

Challenger 300 (Imperial Version) Airplane 

Flight Manual, Publication No. CSP 100–1, 

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 100–1, use Document 

Identification No. CH 300 AFM–I. 

(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 03–19, 

Electrical, of Chapter 03, Emergency 

Procedures, and Section 05–19, Electrical, of 

Chapter 05, Non-Normal Procedures, of the 

Bombardier Challenger 300 (Imperial 

Version) Airplane Flight Manual, Publication 

No. CSP 100–1, 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 100–1, use Document 

Identification No. CH 300 AFM–I. 

(i) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York ACO 

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 

516–228–7300; fax 516–794–5531. 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 

CF–2020–46, 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. FAA–2021–0691. 

(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 516–228–7367; fax 516– 

794–5531; email 9-avs-nyaco-cos@faa.gov. 

(3) For service information identified in 

this AD, contact Bombardier, Inc., 200 CoˆteVertu Road West, Dorval, Que ́bec H4S 2A3, 

Canada; North America toll-free telephone 1– 

866–538–1247 or direct-dial telephone 1– 

514–855–2999; 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 

206–231–3195. 

Issued on August 17, 2021. 

Gaetano A. Sciortino, 

Deputy Director for Strategic Initiatives, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2021–17943 Filed 8–20–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0688; Project 

Identifier 2019–SW–025–AD] 

RIN 2120–AA64 

Airworthiness Directives; He ́licopte`res 

Guimbal Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for 

He ́licopte`res 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. 

DATES: 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) 493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 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 He ́licopte`res 

Guimbal, Basile Ginel, 1070, rue du 

Lieutenant Parayre, Ae ́rodrome d’Aixen-Provence, 13290 Les Milles, France; 

telephone 33–04–42–39–10–88; 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 

6N–321, Fort Worth, TX 76177. For 

information on the availability of this 

material at the FAA, call (817) 222– 

5110. 


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