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Federal Register / Vol. 86, No. 192 / Thursday, October 7, 2021 / Proposed Rules
type certificate data sheet; this AD
therefore does not include those airplanes in the applicability.
This proposed AD was prompted by reports of unclear and incomplete door lock handling instructions for the door of the passenger cabin doghouse, which contains emergency equipment intended to minimize the effects of survivable accidents.
The FAA is proposing this AD to address possible incorrect operation of the doghouse door lock due to unclear and incomplete handling instructions on the door placard installed near the lock. This condition, if not addressed, could lead to failure of the latch, which could block the door in the closed position and prevent access to the emergency equipment inside the doghouse.
See the MCAI for additional background information.
Related Service Information Under 1
CFR Part 51
EASA AD 20210136 specifies procedures for replacing the instruction placard on the passenger cabin doghouse door. EASA AD 20210136
also prohibits the installation of doghouses with incorrect instruction placards.
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.
FAAs Determination These products have been approved by the aviation authority of another country and are approved for operation in the United States. Pursuant to the FAAs bilateral agreement with the State of Design Authority, it has notified the FAA of the unsafe condition described in the MCAI referenced above. The FAA
is issuing this NPRM after determining that the unsafe condition described previously is likely to exist or develop in other products of these same type designs.
Proposed AD Requirements in This NPRM
This proposed AD would require accomplishing the actions specified in EASA AD 20210136 described previously, except for any differences identified as exceptions in the regulatory text of this proposed AD.
Explanation of Required Compliance Information In the FAAs ongoing efforts to improve the efficiency of the AD
process, the FAA developed a process to use some civil aviation authority CAA
ADs as the primary source of information for compliance with requirements for corresponding FAA

ADs. The FAA has been coordinating this process with manufacturers and CAAs. As a result, the FAA proposes to incorporate EASA AD 20210136 by reference in the FAA final rule. This proposed AD would therefore require compliance with EASA AD 20210136
in its entirety through that incorporation, except for any differences identified as exceptions in the regulatory text of this proposed AD.
Using common terms that are the same as the heading of a particular section in EASA AD 20210136 does not mean that operators need comply only with that section. For example, where the AD
requirement refers to all required actions and compliance times, compliance with this AD requirement is not limited to the section titled Required Actions and Compliance Times in EASA AD 20210136.
Service information required by EASA
AD 20210136 for compliance will be available at https www.regulations.gov by searching for and locating Docket No.
FAA20210845 after the FAA final rule is published.
Costs of Compliance The FAA estimates that this proposed AD would affect 62 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this proposed AD:

ESTIMATED COSTS FOR REQUIRED ACTIONS
Labor cost
Parts cost
Cost per product
2 work-hours $85 per hour = $170

Up to $95 per placard

Up to $265 per placard

Cost on U.S. operators Up to $16,430.

Assuming one placard per product. The number of placards on an airplane depends on the passenger configuration and varies from operator to operator.

lotter on DSK11XQN23PROD with PROPOSALS1

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
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develop on products identified in this rulemaking action.

under the criteria of the Regulatory Flexibility Act.

Regulatory Findings
List of Subjects in 14 CFR Part 39

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 above, 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
Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.

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

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

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