Voglio sapere a riguardo di…

46772

Federal Register / Vol. 86, No. 159 / Friday, August 20, 2021 / Rules and Regulations
khammond on DSKJM1Z7X2PROD with RULES

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. FAA2021
0374; 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: Hal Jensen, Aerospace Engineer, Operational Safety Branch, FAA, 950 LEnfant Plaza N SW, Washington, DC 20024;
telephone 202 2679167; email hal.jensen@faa.gov.
SUPPLEMENTARY INFORMATION:
Background EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD 20200087, dated April 15, 2020 EASA AD 2020
0087, to correct an unsafe condition for certain Airbus Helicopters AH, formerly Eurocopter, Eurocopter France, Aerospatiale, Sud Aviation, Model SA330J, AS332C, AS332L, AS332L1, AS332L2, and EC225LP helicopters, if equipped with an LH side stairway door, except helicopters modified in accordance with AH modification MOD 07 28281 AS 332, EC 225 or MOD 07 27338 SA 330. EASA issued EASA AD 20200087 to supersede EASA Emergency AD 20140241E, dated November 4, 2014 EASA AD
20140241E.
The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 by adding an AD that would apply to certain Model SA330J, AS332C, AS332L, AS332L1, AS332L2, and EC225LP helicopters. The NPRM
published in the Federal Register on May 21, 2021 86 FR 27535. The NPRM
was prompted by a report of an LH side stairway door that inadvertently opened and tore off from its attachment fittings during flight. Subsequent investigation revealed that the affected side stairway door had been recently painted and the paint impaired the external door handle motion, affecting the correct operation of the door locking safety mechanism.
The NPRM proposed to require inspecting the locking safety mechanism of the LH side stairway door handle and depending on the results, corrective action. The NPRM also proposed to require modifying the locking safety mechanism.

VerDate Sep<11>2014

16:42 Aug 19, 2021

Jkt 253001

The FAA is issuing this AD to address incorrect locking of the LH side stairway door, which could result in an in-flight opening of the door and subsequent damage to the helicopter or injury to persons on the ground. See EASA AD
20200087 for additional background information.
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.
Conclusion The FAA reviewed the relevant data and determined that air safety and the public interest require adopting this final rule as proposed.
Related Service Information Under 1
CFR Part 51
EASA AD 20200087 requires repetitively inspecting the locking safety mechanism of the LH side stairway door handle for correct operation and depending on the results, reconditioning the locking safety mechanism or contacting the Airbus Helicopters Support and Services Department. EASA AD 20200087 also requires modifying the locking safety mechanism, which constitutes terminating action for the repetitive inspections.
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.
Differences Between This AD and the EASA AD
Where EASA AD 20200087 refers to the effective date of EASA AD 2014
0241E or its effective date, this AD
requires using the effective date of this AD. Where EASA AD 20200087 refers to Group 1 and 2 helicopters, this AD
does not refer to any groups of helicopters. Where the service information referenced in EASA AD
20200087 allows the pilot to perform the requirements of the ASB, this AD
requires the requirements to be performed by a qualified mechanic.
Where the service information referenced in EASA AD 20200087
specifies to submit certain information to the manufacturer, this AD does not include that requirement. Where the service information referenced in EASA
AD 20200087 specifies to discard certain parts, this AD requires removing those parts from service instead. EASA

PO 00000

Frm 00012

Fmt 4700

Sfmt 4700

AD 20200087 requires repeating the inspection before next flight after each application of painting on the LH side stairway door or its external door handle, whereas this AD does not.
EASA AD 20200087 requires contacting the Airbus Helicopters Support and Services Department if it is impossible to recondition the locking safety mechanism by moving the door handle, whereas this AD requires, before further flight, accomplishing paragraph 5 of EASA AD 20200087 or accomplishing corrective action using a method approved by the Manager, International Validation Branch, FAA.
The Managers approval letter must specifically refer to this AD.
Costs of Compliance The FAA estimates that this AD
affects 37 helicopters of U.S. Registry.
Labor rates are estimated at $85 per work-hour. Based on these numbers, the FAA estimates that operators may incur the following costs in order to comply with this AD.
Inspecting the operation of the locking safety mechanism on the LH
side stairway door handle takes about 0.1 work-hour for an estimated cost of $9 per helicopter and $333 for the U.S.
fleet.
Moving the external door handle from the Locked to the Unlocked position to determine if the safety mechanism on the LH side stairway door handle can lock automatically takes about 0.5 work-hour for an estimated cost of $43 per helicopter.
Modifying the locking safety mechanism on the LH side stairway door handle takes about 8 work-hours and parts cost about $5,000 for an estimated cost of $5,680 per helicopter.
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
E:FRFM20AUR1.SGM

20AUR1