Voglio sapere a riguardo di…

15432

Federal Register / Vol. 86, No. 54 / Tuesday, March 23, 2021 / Proposed Rules
This proposed AD was prompted by a report that damage scorch marks was found on an internal life raft installation that contained a half rescue kit.
Investigation revealed that the damage was caused by an unsuitable folding process for the life raft, which led to compression of the flashlight battery in the half rescue kit. This compression caused an electrolyte leakage, followed by a short-circuit that damaged the internal life raft. The FAA is proposing this AD to address leakage of the flashlight battery in a half rescue kit, which could result in damage to the internal life raft, and subsequent failure of the internal life raft to deploy for example after a ditching, which could impede or prevent safe evacuation of the occupants from the helicopter. See the MCAI for additional background information.
Related IBR Material Under 1 CFR Part 51
EASA AD 20160028 describes procedures for identifying the part number and serial number of each half rescue kit located in the internal life raft installation, inspecting the life raft for damage scorch marks, inspecting the condition of the flashlight battery including cracks, impacts, swelling, damage, distorted case, and the connecting wire, testing the flashlight battery turning on the flashlight, and replacing the life raft or flashlight battery including the leak test. 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 and Requirements of This Proposed AD
This product has been approved by the aviation authority of another
country, and is approved for operation in the United States. Pursuant to the bilateral agreement with the State of Design Authority, the FAA has been notified of the unsafe condition described in the MCAI referenced above. The FAA is proposing this AD
because the FAA evaluated all the relevant information and determined the unsafe condition described previously is likely to exist or develop in other products of the same type design.
Proposed AD Requirements This proposed AD would require accomplishing the actions specified in EASA AD 20160028 described previously, as incorporated by reference, except for any differences identified as exceptions in the regulatory text of this AD and except as discussed under Differences Between this Proposed AD and the MCAI.
Explanation of Required Compliance Information In the FAAs ongoing efforts to improve the efficiency of the AD
process, the FAA initially worked with Airbus and EASA to develop a process to use certain EASA ADs as the primary source of information for compliance with requirements for corresponding FAA ADs. The FAA has since coordinated with other manufacturers and civil aviation authorities CAAs to use this process. As a result, EASA AD
20160028 will be incorporated by reference in the FAA final rule. This proposed AD would, therefore, require compliance with EASA AD 20160028
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
the EASA AD 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 the EASA AD. Service information specified in EASA AD
20160028 that is required for compliance with EASA AD 20160028
will be available on the internet at https www.regulations.gov by searching for and locating Docket No.
FAA20210188 after the FAA final rule is published.
Differences Between This Proposed AD
and the MCAI
Although the service information referenced in EASA AD 20160028
specifies to return damaged life rafts to the manufacturer, this AD does not include that requirement.
Where EASA AD 20160028 refers to its effective date or to January 7, 2016
the effective date of EASA AD 2015
0242, this AD requires compliance within 3 months after the effective date of this AD.
Although the service information referenced in EASA AD 20160028
specifies that trained and authorized Zodiac Aerospace personnel must do the inspection of the half rescue kit, this AD does not require that Zodiac Aerospace personnel do the inspection.
Costs of Compliance The FAA estimates that this proposed AD affects 30 helicopters 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
Cost on U.S.
operators
1 work-hour $85 per hour = $85

$3,000

$3,085

$92,550

The FAA estimates the following costs to do any necessary on-condition actions that would be required based on
the results of any required actions. The FAA has no way of determining the
number of helicopters that might need these on-condition actions:

ESTIMATED COSTS OF ON-CONDITION ACTIONS
Labor cost
Parts cost
Cost per product
7.5 work-hours $85 per hour = $637.50

$77,900

$78,537.50

VerDate Sep<11>2014

17:08 Mar 22, 2021

Jkt 253001

PO 00000

Frm 00002

Fmt 4702

Sfmt 4702

E:FRFM23MRP1.SGM

23MRP1