4822 Federal Register / Vol. 87, No. 20 / Monday, January 31, 2022 / Proposed Rules 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive: 

Airbus Helicopters: Docket No. FAA–2022– 

0018; Project Identifier MCAI–2021– 

00853–R. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by March 17, 

2022. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to all Airbus Helicopters 

Model AS332L2 and EC225LP helicopters, 

certificated in any category. 

(d) Subject 

Joint Aircraft Service Component (JASC) 

Code: 7600, Engine Controls. 

(e) Unsafe Condition 

This AD was prompted by a discrepancy in 

the rotorcraft flight manual (RFM) where the 

rotorcraft stay-up flying capabilities for 

Category B operation were provided through 

performance data only, not as airworthiness 

limitations that are dependent upon the 

number of passengers on board. The FAA is 

issuing this AD to address this discrepancy 

in the RFM, which, if not addressed, could 

lead to incorrect determination of the stay-up 

flying capabilities of the helicopter, resulting 

in reduced control of the helicopter. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Requirements 

Except as specified in paragraph (h) of this 

AD: Comply with all required actions and 

compliance times specified in, and in 

accordance with, European Union Aviation 

Safety Agency (EASA) AD 2021–0174, dated 

July 21, 2021 (EASA AD 2021–0174). 

(h) Exceptions to EASA AD 2021–0174 

(1) Where EASA AD 2021–0174 refers to its 

effective date, this AD requires using the 

effective date of this AD. 

(2) Where paragraph (1) of EASA AD 2021– 

0174 specifies to ‘‘inform all flight crew and, 

thereafter, operate the helicopter 

accordingly,’’ this AD does not require those 

actions. 

(3) This AD does not mandate compliance 

with the ‘‘Remarks’’ section of EASA AD 

2021–0174. 

(4) Where paragraph (2) of EASA AD 2021– 

0174 specifies an acceptable compliance 

method, replace the text ‘‘which includes 

information of equal effect to that presented’’ 

with ‘‘which includes information identical 

to that presented.’’ 

(5) The action required by paragraphs (1) 

and (2) of EASA AD 2021–0174 may be 

performed by the owner/operator (pilot) 

holding at least a private pilot certificate and 

must be entered into the aircraft records 

showing compliance with this AD in 

accordance with 14 CFR 43.9(a)(1) through 

(4) and 14 CFR 91.417(a)(2)(v). The record 

must be maintained as required by 14 CFR 

91.417 or 135.439. 

(i) Special Flight Permit 

Special flight permits may be permitted 

provided that there are no passengers on 

board. 

(j) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, International Validation 

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 local 

Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the International Validation 

Branch, send it to the attention of the person 

identified in paragraph (k)(2) of this AD. 

Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(k) Related Information 

(1) For EASA AD 2021–0174, contact 

EASA, Konrad-Adenauer-Ufer 3, 50668 

Cologne, Germany; telephone +49 221 8999 

000; email ADs@easa.europa.eu; internet 

www.easa.europa.eu. You may view this 

material 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. 

This material may be found in the AD docket 

at https://www.regulations.gov by searching 

for and locating Docket No. FAA–2022–0018. 

(2) For more information about this AD, 

contact Andrea Jimenez, Aerospace Engineer, 

COS Program Management Section, 

Operational Safety Branch, Compliance & 

Airworthiness Division, FAA, 1600 Stewart 

Ave., Suite 410, Westbury, NY 11590; 

telephone (516) 228–7330; email 

andrea.jimenez@faa.gov. 

Issued on January 24, 2022. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2022–01805 Filed 1–28–22; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2022–0020; Project 

Identifier MCAI–2021–00784–R] 

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 

supersede Airworthiness Directive (AD) 

2021–02–20, which applies to certain 

He ́licopte`res Guimbal Model Cabri G2 

helicopters. AD 2021–02–20 requires 

initial and repetitive inspections of 

certain rotating and non-rotating scissor 

fittings, and depending on the results, 

replacing the affected assembly. AD 

2021–02–20 also prohibits installing 

certain main rotor hubs (MRHs) and 

swashplate guides unless the initial 

inspection has been accomplished. 

Since the FAA issued AD 2021–02–20, 

the MRH and swashplate guide have 

been redesigned to include a certain 

part-numbered scissor fitting. This 

proposed AD would retain certain 

requirements of AD 2021–02–20, require 

installation of newly designed parts, 

provide a terminating action for the 

initial and repetitive inspections, and 

revise the applicability. This proposed 

AD would also extend the repetitive 

inspection interval and prohibit 

installing certain MRHs and swashplate 

guides. 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 March 17, 2022. 

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 He ́licopte`res 

Guimbal, 1070, rue du Lieutenant 


khammond on DSKJM1Z7X2PROD with PROPOSALS
Federal Register / Vol. 87, No. 20 / Monday, January 31, 2022 / Proposed Rules 4823 

Parayre, Ae ́rodrome d’Aix-en-Provence, 

13290 Les Milles, France; telephone 33– 

04–42–39–10–88; email support@

guimbal.com; or at 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. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2022–0020; 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, the European Union Aviation 

Safety Agency (EASA) AD, any 

comments received, and other 

information. The street address for 

Docket Operations is listed above. 

FOR FURTHER INFORMATION CONTACT: 

Darren Gassetto, Aerospace Engineer, 

COS Program Management Section, 

Operational Safety Branch, Compliance 

& Airworthiness Division, FAA, 1600 

Stewart Ave., Suite 410, Westbury, NY 

11590; telephone (516) 228–7323; email 

Darren.Gassetto@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–2022–0020; Project Identifier 

MCAI–2021–00784–R’’ 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 this 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 Darren Gassetto, 

Aerospace Engineer, COS Program 

Management Section, Operational 

Safety Branch, Compliance & 

Airworthiness Division, FAA, 1600 

Stewart Ave., Suite 410, Westbury, NY 

11590; telephone (516) 228–7323; email 

Darren.Gassetto@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 

The FAA issued AD 2021–02–20, 

Amendment 39–21403 (86 FR 8299, 

February 5, 2021), (AD 2021–02–20), for 

He ́licopte`res Guimbal Model Cabri G2 

helicopters, with rotating or nonrotating scissor fitting part number (P/N) 

G12–00–200, installed on the MRH or 

swashplate guide, respectively. AD 

2021–02–20 requires within 30 hours 

time-in-service (TIS) or 30 calendar 

days, whichever occurs first, inspecting 

each rotating and non-rotating scissor 

fitting with the bolts connecting the 

scissor fittings removed. For this initial 

inspection, AD 2021–02–20 requires 

removing the cotter pins and bolts that 

connect the two scissor fittings, cleaning 

the outside surface of each scissor 

fitting, and using a flashlight to visually 

inspect each scissor fitting for a crack. 

AD 2021–02–20 also requires, at 

intervals not to exceed 50 hours TIS or 

6 months, whichever occurs first, 

repetitive inspections of each scissor 

fitting without removing the bolts and 

separating the two scissor fittings. For 

these repetitive inspections, AD 2021– 

02–20 requires cleaning each scissor 

fitting, and while using a flashlight, 

visually inspecting each scissor fitting 

for a crack. If, during any inspection, 

there is a crack, AD 2021–02–20 

requires replacing the MRH or 

swashplate guide, as applicable, before 

further flight. AD 2021–02–20 also 

prohibits installing an MRH or 

swashplate guide with an affected 

scissor fitting installed, even if new, 

unless the initial inspection has been 

accomplished. 

AD 2021–02–20 was prompted by 

EASA AD 2020–0199, dated September 

21, 2020, and corrected September 24, 

2020 (EASA AD 2020–0199), issued by 

EASA, which is the Technical Agent for 

the Member States of the European 

Union, to correct an unsafe condition 

for He ́licopte`res Guimbal (HG) Model 

Cabri G2 helicopters, all serial numbers. 

EASA advised of a report of a crack in 

a rotating scissor fitting discovered 

during maintenance. According to 

EASA, the suspected root cause of the 

crack was corrosion under residual 

stress. This condition, if not addressed, 

could result in failure of the rotating or 

non-rotating scissor fitting on either the 

MRH or the swashplate guide, and 

subsequent loss of control of the 

helicopter. 

Accordingly, EASA AD 2020–0199 

required an initial and repetitive 

inspections of the rotating and nonrotating scissor fittings P/N G12–00–200 

installed on the MRH or swashplate 

guide, respectively. If a crack was 

detected, EASA AD 2020–0199 required 

replacing the affected MRH or 

swashplate guide with a serviceable 

part. EASA AD 2020–0199 prohibited 

installing certain MRHs and swashplate 

guides unless the initial inspection was 

accomplished. 

Actions Since AD 2021–02–20 Was 

Issued 

Since the FAA issued AD 2021–02– 

20, EASA issued AD 2021–0155, dated 

July 2, 2021 (EASA AD 2021–0155), 

which supersedes EASA AD 2020–0199. 

EASA advises a design change was 

developed for the MRH and swashplate 

guide including installation instructions 

for the modification. EASA AD 2021– 

0155 advises the design change requires 

installing new scissor fitting P/N G12– 

00–202, which is not affected by stress 

corrosion cracking. EASA AD 2021– 

0155 further advises once a helicopter 

installs a certain part-numbered MRH 

and a certain part-numbered swashplate 

guide containing the newly designed 

scissor fitting, HG modification (mod) 

20–040 is accomplished. 

Accordingly, EASA AD 2021–0155 

retains the requirements of EASA AD 

2020–0199, and requires replacement of 

the MRH and swashplate guide 

assemblies with assemblies equipped 

with the newly designed scissor fitting. 

EASA AD 2021–0155 also increases the 

interval for the repetitive inspection and 

prohibits any affected part to be 

installed on any helicopter that has HG 

mod 20–040 installed. EASA AD 2021– 

0155 allows a terminating action for the 

initial and repetitive inspections if the 


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4824 Federal Register / Vol. 87, No. 20 / Monday, January 31, 2022 / Proposed Rules 

helicopter has been modified and 

includes the updated modification 

information. 

After AD 2021–02–20 was issued, the 

FAA determined the applicability 

should be revised to apply to all HG 

Model Cabri G2 helicopters rather than 

be limited to only the helicopters with 

the affected scissor fitting installed. 

Therefore, the FAA revised the 

Applicability paragraph of this 

proposed AD. 

FAA’s Determination 

These helicopters have been approved 

by EASA and are approved for operation 

in the United States. Pursuant to the 

FAA’s bilateral agreement with the 

European Union, EASA has notified the 

FAA about the unsafe condition 

described in its AD. The FAA is 

proposing this AD after evaluating all 

known relevant information and 

determining that the unsafe condition 

described previously is likely to exist or 

develop on other products of these same 

type designs. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed Guimbal Service 

Bulletin SB 20–012, Revision C; SB 20– 

011, Revision D; and SB 21–007 

Revision C, each dated July 22, 2021 (SB 

20–012 Rev C, SB 20–011 Rev D, and SB 

21–007 Rev C). SB 20–012 Rev C 

specifies removing the bolts connecting 

the two scissor fittings P/N G12–00–200 

and accomplishing a one-time detailed 

inspection for a crack in certain areas. 

SB 20–012 Rev C also specifies 

reassembling the two scissor fittings 

using correct bolt torque limits, 

installing new cotter pins, and reporting 

any findings to HG customer support. 

SB 20–011 Rev D specifies procedures 

for a recurring inspection after 

accomplishment of SB 20–012 Rev C of 

the same areas of the scissor fittings for 

a crack as SB 20–012 Rev C, except 

without removing the bolts which 

connect the two scissor fittings. SB 20– 

011 Rev D also specifies reporting any 

findings to HG customer support. SB 

21–007 Rev C specifies instructions for 

installing the newly designed scissor 

fitting. This proposed AD would also 

require Guimbal Service Bulletin SB 20– 

012, Revision B, dated October 5, 2020 

(SB 20–012 Rev B), which the Director 

of the Federal Register approved for 

incorporation by reference as of 

February 22, 2021 (86 FR 8299, 

February 5, 2021). 

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. 

Other Related Service Information 

The FAA also reviewed Guimbal 

Service Bulletin SB 20–011, Revision C, 

dated October 5, 2020 (SB 20–011 Rev 

C). SB 20–011 Rev C specifies the same 

procedures as SB–20–011 Rev D, except 

SB 20–011 Rev D updates the 

applicability and references SB 21–007 

Rev C. 

The FAA reviewed Guimbal Service 

Bulletin SB 20–011, Revision B, and SB 

20–012, Revision A, each dated 

September 1, 2020 (SB 20–011 Rev B 

and SB 20–012 Rev A). SB 20–012 Rev 

A specifies the same procedures as SB 

20–012 Rev B, except SB 20–012 Rev B 

revises the compliance time, adds the 

EASA AD identification information, 

and updates the Situation section 

description. SB 20–011 Rev B specifies 

the same procedures as SB 20–011 Rev 

C, except SB 20–011 Rev C adds the 

EASA AD identification information 

and updates the Situation section 

description. 

The FAA also reviewed Guimbal 

Service Bulletin SB 21–007, Revision B, 

dated April 4, 2021 which states the 

same procedures as SB 21–007 Rev C, 

except SB 21–007 Rev C revises the 

compliance time to coincide with the 

effective date of EASA AD 2021–0155. 

Proposed AD Requirements in This 

NPRM 

This proposed AD would retain 

certain inspection and corrective action 

requirements of AD 2021–02–20. This 

proposed AD would also require within 

60 hours TIS or 6 months, whichever 

occurs first after the effective date of 

this proposed AD, and thereafter at 

intervals not to exceed 60 hours TIS or 

6 months, whichever occurs first, 

leaving each scissor fitting assembled 

and visually inspecting each scissor 

fitting for a crack. If there is a crack 

during the initial inspection or the 

recurring inspection, this proposed AD 

would require before further flight, 

replacing certain parts or as an 

alternative, installing HG mod 20–040. 

This proposed AD would also require, 

within 60 months or during the next 

main gearbox overhaul, whichever 

occurs first after the effective date of 

this proposed AD, removing from 

service MRH P/N G12–00–100, or G12– 

00–101, or G12–00–102 and swashplate 

guide P/N G21–01–101 or G21–01–102 

and installing HG mod 20–040. This 

proposed AD would also consider 

installing HG mod 20–040 to be a 

terminating action for the initial and 

recurring visual inspections required by 

this proposed AD. 

For any pre-HG mod 20–040 

helicopter, as of February 22, 2021 (the 

effective date of AD 2021–02–20), this 

proposed AD would prohibit installing 

an MRH or swashplate guide, with a 

certain part-numbered rotating or nonrotating scissor fitting installed, unless 

certain actions have been accomplished. 

For any post-HG mod 20–040 

helicopter, as of the effective date of this 

AD, this proposed AD would prohibit 

installing an MRH or swashplate guide, 

with a certain part-numbered rotating or 

non-rotating scissor fitting installed, on 

any helicopter. 

Differences Between This Proposed AD 

and EASA AD 2021–0155 

EASA AD 2021–0155 requires 

detailed inspections, whereas this 

proposed AD would require cleaning 

each scissor fitting and visually 

inspecting each scissor fitting using a 

flashlight. EASA AD 2021–0155 also 

requires reporting certain information, 

whereas this proposed AD would not. 

EASA AD 2021–0155 requires replacing 

certain parts if a crack is detected with 

serviceable parts, whereas this proposed 

AD would require replacing certain 

parts with airworthy parts. 

Costs of Compliance 

The FAA estimates that this AD, if 

adopted as proposed, would affect 32 

helicopters of U.S. Registry. Labor rates 

are estimated at $85 per work-hour. 

Based on these numbers, the FAA 

estimates the following costs to comply 

with this proposed AD. 

Removing and installing the bolt and 

cotter pins in the initial inspection 

would take a minimal amount of time 

with a minimal parts cost. 

Inspecting each scissor fitting would 

take about 0.5 work-hours for an 

estimated cost of $43 per fitting, per 

inspection cycle. There are 2 scissor 

fittings installed on a helicopter, for an 

estimated cost of $85 per helicopter and 

$2,720 for the U.S. fleet, per inspection 

cycle. 

Removing an MRH and swashplate 

guide and installing the improved MRH 

and swashplate guide would take about 

6 work-hours and parts would cost 

about $1,608 through the parts exchange 

program for an estimated cost of $2,118 

per helicopter and $67,776 for the U.S. 

fleet. The FAA expects the majority of 

operators would use the parts exchange 

program. If not accomplished through 

the parts exchange program, an 

improved MRH and swashplate guide 

would cost about $8,695 for an 

estimated cost of $9,205 per helicopter 

and $294,560 for the U.S. fleet. 

The FAA estimates the following 

costs to do any necessary on-condition 

replacements that would be required 

based on the results of the inspection. 


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Federal Register / Vol. 87, No. 20 / Monday, January 31, 2022 / Proposed Rules 4825 

The agency has no way of determining 

the number of aircraft that might need 

these on-condition replacements: 

Replacement of an MRH due to a 

crack in the scissor fitting with an 

airworthy MRH would take about 5 

work-hours and parts would cost about 

$7,360 for an estimated cost of $7,785 

per helicopter; and replacement of a 

swashplate guide due to a crack in the 

scissor fitting with an airworthy 

swashplate guide would take about 6 

work-hours and parts would cost about 

$1,312 for an estimated cost of $1,822 

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. 

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, 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: 

■ a. Removing Airworthiness Directive 

2021–02–20, Amendment 39–21403 (86 

FR 8299, February 5, 2021); and 

■ b. Adding the following new 

airworthiness directive: 

He ́licopte`res Guimbal: Docket No. FAA– 

2022–0020; Project Identifier MCAI– 

2021–00784–R. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) action by March 

17, 2022. 

(b) Affected ADs 

This AD replaces AD 2021–02–20, 

Amendment 39–21403 (86 FR 8299, February 

5, 2021) (AD 2021–02–20). 

(c) Applicability 

This AD applies to He ́licopte`res Guimbal 

(HG) Model Cabri G2 helicopters, all serial 

numbers, certificated in any category. 

(d) Subject 

Joint Aircraft Service Component (JASC) 

Code: 6700, Rotorcraft Flight Control; 6710, 

Main Rotor Control. 

(e) Unsafe Condition 

This AD was prompted by a report of a 

crack in a rotating scissor fitting. The FAA 

is issuing this AD to detect a crack and 

prevent failure of a scissor fitting. The unsafe 

condition, if not addressed, could result in 

failure of a rotating or non-rotating scissor 

fitting and subsequent loss of control of the 

helicopter. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

For helicopters with rotating or nonrotating scissor fitting part number (P/N) 

G12–00–200, installed on the main rotor hub 

(MRH) or swashplate guide, respectively: (1) 

Within 30 hours time-in-service (TIS) or 30 

calendar days, whichever occurs first after 

February 22, 2021 (the effective date of AD 

2021–02–20): 

(i) Remove the cotter pins and bolts 

connecting the rotating and non-rotating 

scissor fitting by following the Required 

Actions, IPC 4.1–2 a), of Guimbal Service 

Bulletin SB 20–012, Revision B, dated 

October 5, 2020 (SB 20–012 Rev B). Remove 

the cotter pins from service. Clean each 

scissor fitting. Using a flashlight, visually 

inspect each scissor fitting by following the 

Required Actions, IPC 4.1–2 b), of SB 20–012 

Rev B. As an alternative to using SB 20–012 

Rev B, you may remove the cotter pins and 

bolts in accordance with the Required 

Actions, IPC 4.1–2 a), of Guimbal Service 

Bulletin SB 20–012, Revision C, dated July 

22, 2021 (SB 20–012 Rev C), and visually 

inspect each scissor fitting in accordance 

with the Required Actions, IPC 4.1–2 b), of 

SB 20–012 Rev C. 

(ii) If there is a crack, before further flight, 

replace the MRH or swashplate guide with an 

airworthy part as applicable; or, as an 

alternative, you may accomplish the 

modification specified in paragraph (g)(3) of 

this AD. 

(iii) If there is not a crack, reassemble the 

scissor fittings by following the Required 

Actions, IPC 4.1–2 c), of SB 20–012 Rev B. 

As an alternative to using SB 20–012 Rev B, 

you may reassemble the scissor fittings in 

accordance with the Required Actions, IPC 

4.1–2 c), of SB 20–012 Rev C. 

(2) Thereafter, within 60 hours TIS or 6 

months, whichever occurs first after the 

effective date of this AD, and thereafter at 

intervals not to exceed 60 hours TIS or 6 

months, whichever occurs first: 

(i) Leaving each rotating and non-rotating 

scissor fitting assembled, clean each scissor 

fitting. Using a flashlight, visually inspect 

each scissor fitting by following the Required 

Actions, IPC 4.1–2 a), of Guimbal Service 

Bulletin SB 20–011, Revision D, dated July 

22, 2021. 

(ii) If there is a crack, before further flight, 

replace the MRH or swashplate guide, with 

an airworthy part as applicable; or, as an 

alternative, you may accomplish the 

modification specified in paragraph (g)(3) of 

this AD. 

(3) Within 60 months, or during the next 

main gearbox overhaul, whichever occurs 

first after the effective date of this AD, 

remove MRH P/N G12–00–100, or G12–00– 

101, or G12–00–102 and swashplate guide 

P/N G21–01–101 or G21–01–102 from service 

and modify your helicopter by installing 

MRH P/N G12–00–103 and swashplate guide 

P/N G21–01–103 containing scissor fitting 

P/N G12–00–202 (HG modification (mod) 20– 

040) by following the Required Actions, IPC 

2.1–0 a) through k) and m) through aa) of 

Guimbal Service Bulletin SB 21–007, 

Revision C, dated July 22, 2021. 

Note 1 to paragraph (g)(3): HG mod 20– 

040, as referenced in paragraphs (g)(3), and 

(h)(1) and (2) of this AD, is accomplished 

after installation of MRH P/N G12–00–103 

and swashplate guide P/N G21–01–103 

containing scissor fitting P/N G12–00–202. 

(4) Completing the actions required by 

paragraph (g)(3) of this AD constitutes a 

terminating action for the requirements in 

paragraphs (g)(1) and (2) of this AD. 

(h) Parts Installation 

(1) For any pre-HG mod 20–040 helicopter: 

As of February 22, 2021 (the effective date of 

AD 2021–02–20), do not install an MRH or 

swashplate guide, with rotating or nonrotating scissor fitting P/N G12–00–200 

installed, respectively, on any helicopter, 


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4826 Federal Register / Vol. 87, No. 20 / Monday, January 31, 2022 / Proposed Rules 

even if new, unless the actions required by 

paragraph (g)(1) of this AD have been 

accomplished. 

(2) For any post-HG mod 20–040 

helicopter: As of the effective date of this AD, 

do not install an MRH or swashplate guide, 

with rotating or non-rotating scissor fitting 

P/N G12–00–200 installed, respectively, on 

any helicopter. 

(i) Credit for Previous Actions 

(1) This paragraph provides credit for the 

actions required by paragraph (g)(1) of this 

AD if you accomplished Guimbal Service 

Bulletin SB 20–012, Revision A, dated 

September 1, 2020, before February 22, 2021 

(the effective date of AD 2021–02–20). 

(2) This paragraph provides credit for the 

first instance of the actions required by 

paragraph (g)(2) of this AD if you 

accomplished Guimbal Service Bulletin SB 

20–011, Revision B, dated September 1, 2020, 

before February 22, 2021 (the effective date 

of AD 2021–02–20). 

(3) This paragraph provides credit for the 

actions required by paragraph (g)(2) of this 

AD if you accomplished Guimbal Service 

Bulletin SB 20–011, Revision C, dated 

October 5, 2020, before the effective date of 

this AD. 

(4) This paragraph provides credit for the 

actions required by paragraph (g)(3) of this 

AD if you accomplished Guimbal Service 

Bulletin SB 21–007, Revision B, dated April 

4, 2021, before the effective date of this AD. 

(j) Special Flight Permits 

A special flight permit may be permitted 

provided that there are no passengers 

onboard, and the flight is operating under 

day Visual Flight Rules, for the purpose of 

ferrying the helicopter to an authorized 

maintenance facility. 

(k) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, International Validation 

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 local 

Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the International Validation 

Branch, send it to the attention of the person 

identified in paragraph (l)(1) of this AD. 

Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(l) Related Information 

(1) For more information about this AD, 

contact Darren Gassetto, Aerospace Engineer, 

COS Program Management Section, 

Operational Safety Branch, Compliance & 

Airworthiness Division, FAA, 1600 Stewart 

Ave., Suite 410, Westbury, NY 11590; 

telephone (516) 228–7323; email 

Darren.Gassetto@faa.gov. 

(2) For service information identified in 

this AD, contact He ́licopte`res Guimbal, 1070, 

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

telephone 33–04–42–39–10–88; email 

support@guimbal.com; web https://

www.guimbal.com. You may view this 

referenced 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. 

(3) The subject of this AD is addressed in 

European Union Aviation Safety Agency 

(EASA) AD 2021–0155, dated July 2, 2021. 

You may view the EASA AD on the internet 

at https://www.regulations.gov in Docket No. 

FAA–2022–0020. 

Issued on January 25, 2022. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2022–01829 Filed 1–28–22; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–1173; Project 

Identifier AD–2021–00917–T] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company 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 all 

The Boeing Company Model 747–8F 

series airplanes. This proposed AD was 

prompted by reports of fuselage crown 

stringer cracking between station (STA) 

740 and STA 1000, stringer (S)–7 to S– 

12. This proposed AD would require 

repetitive detailed inspections for 

cracking of fuselage crown stringers and 

applicable on-condition actions. 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 March 17, 2022. 

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 Boeing Commercial 

Airplanes, Attention: Contractual & Data 

Services (C&DS), 2600 Westminster 

Blvd., MC 110–SK57, Seal Beach, CA 

90740–5600; telephone 562–797–1717; 

internet https://

www.myboeingfleet.com. You may view 

this referenced 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. It is also available at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

1173. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–1173; 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: 

Stefanie Roesli, Aerospace Engineer, 

Airframe Section, FAA, Seattle ACO 

Branch, 2200 South 216th St., Des 

Moines, WA 98198; phone and fax: 206– 

231–3964; email: stefanie.n.roesli@

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–2021–1173; Project Identifier AD– 

2021–00917–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 this 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 


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