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Federal Register / Vol. 86, No. 150 / Monday, August 9, 2021 / Proposed Rules c Applicability This AD applies to Helicopteres Guimbal HG Model Cabri G2 helicopters, certificated in any category, the following aluminum cooling fan cooling fan part number P/N
installed:
1 P/N G5200000, 2 P/N G5200001 or P/N G5204100, if it is or has previously been mounted on a 12hole engine pulley P/N G5210100 or P/N
G5210101.
d Subject Joint Aircraft Service Component JASC
Code: 7100, Powerplant System.
e Unsafe Condition This AD was prompted by reports of inflight engine shutdowns due to a crack and subsequent failure of the cooling fan. The FAA is issuing this AD to prevent failure of the cooling fan. This condition, if not addressed, could result in an in-flight engine shut-down and loss of control of the helicopter.

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f Compliance Comply with this AD within the compliance times specified, unless already done.
g Required Actions 1 For Model Cabri G2 helicopters with cooling fan P/N G5200000 installed, within 150 hours time-in-service TIS after the effective date of this AD:
i Remove the cooling fan from service by following the Required Actions, Cooling Fan Removal, paragraphs a through g, of Guimbal Service Bulletin SB 16021, Revision E, dated August 27, 2019 SB 16
021 Rev E, except you are not required to discard any parts.
ii Install the improved cooling fan P/N
G5204101 by following the Required Actions, Cooling Fan Installation, paragraphs a through j, of SB 16021 Rev E.
2 For Model Cabri G2 helicopters with a cooling fan P/N G5200001 or P/N G5204
100 that is mounted or was previously mounted on a 12-hole engine pulley P/N
G5210100 or P/N G5210101, and with 1,500 or more total hours TIS, since first installation on a helicopter, within 150 hours TIS after the effective date of this AD:
i Remove the cooling fan from service by following the Required Actions, Cooling Fan Removal, paragraphs a through g, of SB
16021 Rev E, except you are not required to discard any parts, or remove the cooling fan by following the Required Actions, Cooling Fan Removal, paragraphs a through g, of SB 16021 Rev E and modify the cooling fan by following the Required Actions, Cooling Fan Retrofit, paragraphs a through h of SB
16021 Rev E.
ii Install the improved cooling fan P/N
G5204101 by following the Required Actions, Cooling Fan Installation, paragraphs a through j, of SB 16021 Rev E.
3 For Model Cabri G2 helicopters with a cooling fan P/N G5200001 or P/N G5204
100 that is mounted or was previously mounted on a 12-hole engine pulley P/N
G5210100 or P/N G5210101 and with 500 total hours TIS but with less than 1,500

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total hours TIS, since first installation on a helicopter, within 500 hours TIS after the effective date of this AD, perform the actions required by paragraphs g2i and ii of this AD.
4 For Model Cabri G2 helicopters with a cooling fan P/N G5200001 or P/N G5204
100 that is mounted or was previously mounted on a 12-hole engine pulley P/N
G5210100 or P/N G5210101 and with less than 500 total hours TIS since first installation on a helicopter, within 1,000
hours TIS after the effective date of this AD, perform the actions required by paragraphs g2i and ii of this AD.
5 As of the effective date of this AD, do not install any cooling fan listed in paragraph c of this AD on any helicopter.
h Credit for Previous Actions This paragraph provides credit for the actions specified in paragraph g of this AD, if those actions were performed before the effective date of this AD using Guimbal Service Bulletin SB 16021, Revision D, dated May 20, 2019.
i 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 j1 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.
j Related Information 1 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 2287330; email andrea.jimenez@faa.gov.
2 For service information identified in this AD, contact Helicopteres Guimbal, Basile Ginel, 1070, rue du Lieutenant Parayre, Aerodrome dAix-en-Provence, 13290 Les Milles, France; telephone 3304423910
88; email basile.ginel@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 6N321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 817 2225110.
3 The subject of this AD is addressed in European Union Aviation Safety Agency EASA AD 20190187, dated July 31, 2019
and corrected August 2, 2019. You may view the EASA AD on the internet at https
www.regulations.gov in Docket No. FAA
20210620.

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Issued on July 30, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202116684 Filed 8621; 8:45 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210616; Project Identifier MCAI202100256T
RIN 2120AA64

Airworthiness Directives; Saab AB, Support and Services Formerly Known as Saab AB, Saab Aeronautics Airplanes Federal Aviation Administration FAA, DOT.
ACTION: Notice of proposed rulemaking NPRM.
AGENCY:

The FAA proposes to adopt a new airworthiness directive AD for certain Saab AB, Support and Services Model SAAB 340B airplanes. This proposed AD was prompted by a report that the circuit breaker for the emergency cabin lighting tripped without fault in the system. This proposed AD would require replacing a certain circuit breaker with a part having a higher rating, as specified in a European Union Aviation Safety Agency EASA AD, which is proposed for incorporation by reference. 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 September 23, 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: 2024932251.
Mail: U.S. Department of Transportation, Docket Operations, M30, West Building Ground Floor, Room W12140, 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 material that will be incorporated by reference IBR in this AD, contact EASA, Konrad-Adenauer-Ufer 3, 50668
Cologne, Germany; telephone +49 221
8999 000; email ADs@easa.europa.eu;
SUMMARY:

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