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Federal Register / Vol. 86, No. 101 / Thursday, May 27, 2021 / Rules and Regulations incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective July 1, 2021.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD
as of July 1, 2021.
ADDRESSES: For material incorporated by reference IBR in this AD, contact the 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 find this material on the EASA website at https
ad.easa.europa.eu. You may view this material 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 8172225110. It is also available in the AD docket on the internet at https www.regulations.gov by searching for and locating Docket No.
FAA20201171.
Examining the AD Docket You may examine the AD docket on the internet at https
www.regulations.gov by searching for and locating Docket No. FAA2020
1171; 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 final rule, any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT:
Kathleen Arrigotti, Program Manager, Large Aircraft Section, International Validation Branch, Compliance &
Airworthiness Division, FAA, 2200
South 216th St., Des Moines, WA 98198;
telephone and fax 2062313218; email kathleen.arrigotti@faa.gov.
SUPPLEMENTARY INFORMATION:
Background
jbell on DSKJLSW7X2PROD with RULES

The EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD
20170177, dated September 14, 2017
EASA AD 20170177 also referred to
as the Mandatory Continuing Airworthiness Information, or the MCAI, to correct an unsafe condition for all Airbus Helicopters Deutschland GmbH Model MBBBK 117 C2
helicopters, except the Model C2e variant, and all Model MBBBK 117
D2 helicopters.
EASAs Model MBBBK 117 C2e variant helicopters are not a unique model on the U.S. type certificate but are considered a configuration of the Model MBBBK117 C2. The U.S. type certificate data sheet explains that the FAA determined that the type design changes involved did not rise to the level that required an FAA amended type certificate. However, the FAA does recognize that helicopters with these type design changes exist, therefore the designation Model MBBBK117 C2e is used, starting from Serial Number 9601. The Model MBBBK117 C2e is a visual flight rules only configuration of the Model MBBBK117 C2 utilizing a Garmin 500H flight display system.
The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 by adding an AD that would apply to all Airbus Helicopters Deutschland GmbH Model MBBBK 117
C2 and Model MBBBK 117 D2
helicopters, except the Model MBB
BK117 C2e configuration. The NPRM
published in the Federal Register on March 11, 2021 86 FR 13830. The NPRM was prompted by a determination that a life limit for the adapter FWD of the outboard load system, repetitive inspections of other components of that system, and for certain helicopters, a modification of the outboard load system, are necessary to address the unsafe condition. The NPRM proposed to require a modification of the outboard load system for certain helicopters, repetitive inspections of the outboard load system and its components for any defect including cracking, damage, corrosion, and incorrect installation and applicable corrective actions, and implementation of a new life limit for the FWD adapter, as specified in an EASA AD.
The FAA is issuing this AD to address detachment of an external load or person from the helicopter hoist, resulting in personal injury, or injury to persons on the ground. See the MCAI
for additional background information.

28477

Discussion of Final Airworthiness Directive Comments The FAA gave the public the opportunity to participate in developing this final rule. The FAA received no comments on the NPRM or on the determination of the cost to the public.
Costs of Compliance Update The NPRM had specified no definitive data was available for the costs of the modification and certain parts. The FAA
has received data on the costs of the modification and parts and has updated the costs of compliance accordingly.
Conclusion The FAA reviewed the relevant data and determined that air safety and the public interest require adopting this final rule as proposed, except for minor editorial changes and a change to paragraph i1 of this AD. The FAA has determined that these minor changes:
Are consistent with the intent that was proposed in the NPRM for addressing the unsafe condition; and Do not add any additional burden upon the public than was already proposed in the NPRM.
Related Service Information Under 1
CFR Part 51
EASA AD 20170177 describes procedures for modification of the outboard load system for certain Model MBBBK 117 C2 helicopters, repetitive inspections of the outboard load system and its components for any defect including cracking, damage, corrosion, and incorrect installation and corrective actions, and implementation of a new life limit for the FWD adapter i.e., repetitive replacements. The corrective actions include replacement of any defective component with a serviceable part.
This material 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.
Costs of Compliance The FAA estimates that this AD
affects 175 helicopters of U.S. registry.
The FAA estimates the following costs to comply with this AD:

ESTIMATED COSTS FOR REQUIRED ACTIONS
Labor cost
Parts cost
Cost per product
Cost on U.S.
operators
4 work-hours $85 per hour = $340

$2,276

$2,616

$457,800

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