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Federal Register / Vol. 86, No. 193 / Friday, October 8, 2021 / Proposed Rules addressed, could prevent proper extinguishing of a fire in the cabin, possibly resulting in damage to the helicopter and injury to the occupants.
Accordingly, EASA AD 20200013
requires replacing affected fire extinguishers and prohibits installing an affected fire extinguisher on any helicopter.
FAAs Determination These products have been approved by EASA and are approved for operation in the United States. Pursuant to the FAAs bilateral agreement with the European Union, EASA has notified the FAA about the unsafe condition described in its AD. The FAA is proposing this AD after evaluating all known relevant information and determining that the unsafe condition described previously is likely to exist or develop on other products.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Umlaut Vendor Service Bulletin Doc. No. P3VSB000001, Issue C, dated December 13, 2019 VSB
P3VSB000001. This service information specifies procedures for identifying P3HAFEX fire extinguisher P/Ns P3APP003010A and P3APP003010C, with a date of manufacture between March 2019 through July 2019, and an S/N listed in its Appendix 1, to determine if the fire extinguisher should be replaced. VSB P3VSB000001 also specifies procedures for removing, installing, and tracking affected P3HAFEX fire extinguishers.
This service information 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.

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Proposed AD Requirements in This NPRM
This proposed AD would require removing affected fire extinguishers from service and prohibit installing affected fire extinguishers on any aircraft.
Differences Between This Proposed AD
and the EASA AD
EASA AD 20200013 is issued against various model helicopters and defines an affected part, whereas this proposed AD is an appliance AD action against affected fire extinguishers because the unsafe condition exists in the appliance itself and not in the installation of the appliance on certain aircraft. EASA AD
20200013 identifies some helicopter models that are affected by this unsafe condition that are not identified as possibly affected in this proposed AD

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because those model helicopters are not FAA type-certificated.
Costs of Compliance The FAA estimates that this proposed AD affects 762 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 proposed AD.
Replacing a fire extinguisher would take about 0.25 work-hour and parts would cost about $1,200 for an estimated cost of $1,221 per fire extinguisher.
According to Umlaut Engineering GmbH service information, some of the costs of this proposed AD may be covered under warranty, thereby reducing the cost impact on affected individuals. The FAA does not control warranty coverage by Umlaut Engineering GmbH; accordingly, all costs are included in this cost estimate.
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 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, 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
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3 Would 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.
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.
39.13

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

Umlaut Engineering GmbH previously P3
Engineering GmbH HAFEX Halon-free Hand-Held Fire Extinguishers: Docket No. FAA20210843; Project Identifier MCAI202000256Q.
a Comments Due Date The FAA must receive comments on this airworthiness directive AD by November 22, 2021.
b Affected ADs None.
c Applicability This AD applies to Umlaut Engineering GmbH previously P3 Engineering GmbH
HAFEX Halon-free hand-held P3HAFEX
fire extinguisher fire extinguisher part numbers P3APP003010A and P3APP003010C
with a manufacturing date of March 2019
through July 2019 inclusive and with a serial number listed in Appendix 1 of Umlaut Vendor Service Bulletin Doc. No.
P3VSB000001, Issue C, dated December, 13, 2019. These fire extinguishers may be installed on but not limited to the following aircraft certificated in any category:
1 Airbus Helicopters Model AS332C, AS332C1, AS332L, AS332L1, AS332L2, AS
365N2, AS 365 N3, EC 155B, EC155B1, EC225LP, SA330J, SA365C1, SA365C2, SA365N, and SA365N1 helicopters;
2 Airbus Helicopters Deutschland GmbH
AHD Model EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, EC135T3, MBBBK117 A1, MBBBK117 A
3, MBBBK117 A4, MBBBK117 B1, MBBBK117 B2, MBBBK117 C1, MBB
BK117 C2, and MBBBK117 D2
helicopters;
3 Leonardo S.p.a. Model AB139, AB412, AB412 EP, AW139, AW169, and AW189
helicopters; and 4 PZL Swidnik S.A Model PZL W3A
helicopters.

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