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Federal Register / Vol. 86, No. 34 / Tuesday, February 23, 2021 / Rules and Regulations ESTIMATED COSTS FOR REQUIRED ACTIONS
Action
Labor cost
Parts cost
Modification

12 work-hours $85 per hour = $1,020

$4,863

Cost per product $5,883

Cost on U.S.
operators $664,779

The modification costs include the costs for testing. The FAA has received no definitive data on the costs of the corrective actions necessary to pass the testing.

Authority for This Rulemaking Title 49 of the United States Code specifies the FAAs 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 Agencys 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 This AD will not have federalism implications under Executive Order 13132. This AD will 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 that this AD:
1 Is not a significant regulatory action under Executive Order 12866, 2 Will not affect intrastate aviation in Alaska, and 3 Will 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.
Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows:

VerDate Sep<11>2014

21:28 Feb 22, 2021

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bulletin, this AD requires using the effective date of this AD.

PART 39AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:

Authority: 49 U.S.C. 106g, 40113, 44701.
39.13

Amended
2. The FAA amends 39.13 by adding the following new airworthiness directive:

20210216 The Boeing Company:
Amendment 3921399; Docket No.
FAA20200467; Product Identifier 2020NM056AD.
a Effective Date This airworthiness directive AD is effective March 30, 2021.
b Affected ADs None.
c Applicability This AD applies to all The Boeing Company Model 717200 airplanes, certificated in any category.
d Subject Air Transport Association ATA of America Code 30, Ice and rain protection.
e Unsafe Condition This AD was prompted by a report that during takeoff, both the captains and first officers airspeed indicators froze at 80 knots.
The FAA is issuing this AD to address pitot tubes blocked by ice, which could affect the airspeed indication provided to the flightcrew through the air data heat ADH
system and result in loss of aircraft controllability.
f Compliance Comply with this AD within the compliance times specified, unless already done.
g Required Actions Except as specified in paragraph h of this AD: At the applicable times specified in paragraph 1.E., Compliance, of Boeing Alert Service Bulletin 71730A0009, dated March 31, 2020, do all applicable actions identified as RC required for compliance in, and in accordance with, the Accomplishment Instructions of Boeing Alert Service Bulletin 71730A0009, dated March 31, 2020.
h Exception to Service Information Specifications Where Boeing Alert Service Bulletin 717
30A0009, dated March 31, 2020, uses the phrase the original issue date of this service
PO 00000

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i Alternative Methods of Compliance AMOCs 1 The Manager, Los Angeles 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 local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph j of this AD. Information may be emailed to: 9-ANMLAACO-AMOC-Requests@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.
3 An AMOC that provides an acceptable level of safety may be used for any repair, modification, or alteration required by this AD if it is approved by The Boeing Company Organization Designation Authorization ODA that has been authorized by the Manager, Los Angeles ACO Branch, FAA, to make those findings. To be approved, the repair method, modification deviation, or alteration deviation must meet the certification basis of the airplane, and the approval must specifically refer to this AD.
4 For service information that contains steps that are labeled as Required for Compliance RC, the provisions of paragraphs i4i and ii of this AD apply.
i The steps labeled as RC, including substeps under an RC step and any figures identified in an RC step, must be done to comply with the AD. If a step or substep is labeled RC Exempt, then the RC
requirement is removed from that step or substep. An AMOC is required for any deviations to RC steps, including substeps and identified figures.
ii Steps not labeled as RC may be deviated from using accepted methods in accordance with the operators maintenance or inspection program without obtaining approval of an AMOC, provided the RC steps, including substeps and identified figures, can still be done as specified, and the airplane can be put back in an airworthy condition.
j Related Information For more information about this AD, contact Eric Igama, Aerospace Engineer, Systems and Equipment Section, FAA, Los Angeles ACO Branch, 3960 Paramount Boulevard, Lakewood, CA 907124137;
phone: 5626275388; fax: 5626275210;
email: roderick.igama@faa.gov.

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