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Federal Register / Vol. 86, No. 47 / Friday, March 12, 2021 / Rules and Regulations
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.
FAA20201132.
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
1132; 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, M
30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT:
Katherine Venegas, Aviation Safety Engineer, Cabin Safety, Mechanical and Environmental Systems Section, Los Angeles ACO Branch, FAA, 3960
Paramount Boulevard, Lakewood, CA
907124137; phone: 5626275353; fax:
5626275210; email:
Katherine.Venegas@faa.gov.
SUPPLEMENTARY INFORMATION:
Discussion The EASA, which is the Technical Agent for the Member States of the
European Union, has issued EASA AD
20170020R1, dated May 22, 2019
EASA AD 20170020R1 also referred to as the Mandatory Continuing Airworthiness Information, or the MCAI, to correct an unsafe condition for certain Airbus Helicopters Model AS350B, AS350BA, AS350BB, AS350B1, AS350B2, AS350B3, AS355E, AS355F, AS355F1, AS355F2, AS355N
and AS355NP helicopters. Model AS350BB helicopters are not certificated by the FAA and are not included on the U.S. type certificate data sheet; this AD
therefore does not include those helicopters in the applicability.
The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 to supersede AD 20181502, Amendment 3919334 83 FR 34029, July 19, 2018 AD 20181502. AD
20181502 applied to certain Airbus Helicopters Model AS350B, AS350B1, AS350B2, AS350B3, AS350BA, AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters. The NPRM
published in the Federal Register on December 16, 2020 85 FR 81427. The NPRM was prompted by a report of several cases of damaged TR pitch rod ball joints. The NPRM proposed to continue to require the repetitive inspections of the TR pitch rod for a damaged elastomeric ball joint, as specified in an EASA AD. The NPRM
also proposed to allow the repetitive inspection intervals specified in AD
20181502 to be extended to correspond with the intervals for the inspection of the TR pitch rod specified in the airworthiness limitation section of the applicable helicopter maintenance manual, as specified in an EASA AD. The FAA is issuing this AD
to address damage to the elastomeric ball joint on the TR pitch change rod.

This condition could result in failure of the TR pitch change rod and subsequent loss of control of the helicopter.
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.
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. 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 20170020R1 describes procedures for repetitively inspecting the TR pitch rod for a damaged debonding, extrusion, or cracking elastomeric ball joint and corrective action. The corrective action includes replacing an affected TR pitch rod with a serviceable TR pitch rod. 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 955 helicopters of U.S. registry.
The FAA estimates the following costs to comply with this AD:

ESTIMATED COSTS FOR REQUIRED ACTIONS
Action
Labor cost
Retained actions from AD 20181502

0.5 work-hour $85 per hour = $42.50

This new AD adds no new costs to affected operators.
The FAA estimates the following costs to do any necessary on-condition
Cost per product
Parts cost
actions that would be required based on the results of any required actions. The FAA has no way of determining the
$0

$42.50

Cost on U.S.
operators $40,587.50

number of helicopters that might need these on-condition actions:

ESTIMATED COSTS OF ON-CONDITION ACTIONS
Labor cost
Parts cost
Cost per product
1 work-hour $85 per hour = $85

$3,358

$3,443

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