preamble attached >>>
ADs updated daily at www.Tdata.com
PROPOSED AD BELL TEXTRON CANADA LIMITED HELICOPTERS: Docket No. FAA-2020-1170; Project Identifier MCAI-2020-00720-R.
(a) APPLICABILITY

    This  airworthiness  directive  (AD) applies  to  Bell  Textron Canada
    Limited (Bell)  Model 429  helicopters, certificated  in any category,
    with a Bell Emergency Flotation System (EFS) kit P/N  429-706-069-101/
    -103/-105/-121/-123/-125/-139/-141/-143/or  -157  manufactured  before
    July 2019,  with a float supply hose manufactured before January 2014,
    installed,  except for  float supply hoses  marked with "SB 025-69-21"
    above the external identification marking.

(b) UNSAFE CONDITION

    This AD defines  the unsafe condition  as a blocked  float supply hose
    installed on an EFS. This condition could result in partial  inflation
    of an EFS float during an emergency landing on water and  subsequently
    preventing a timely egress from the helicopter.

(c) COMMENTS DUE DATE

    The FAA must receive comments by May 7, 2021.

(d) COMPLIANCE

    You are  responsible for  performing each  action required  by this AD
    within  the  specified  compliance time  unless  it  has already  been
    accomplished prior to that time.

(e) REQUIRED ACTIONS

(1) Within  100  hours  time-in-service  (TIS): (i) Remove each EFS supply
    hose from the float and inspect each end of the EFS supply hose by in-
    serting a plastic cable tie, 300 mm minimum x 5 mm maximum (11.811 in.
    minimum x .196 in. maximum),  into the holes of the related fitting as
    shown in Figure 1 of Safran Aerosystems Services  Service Bulletin No.
    025-69-21, Revision 00, dated March 23, 2020 (SB 025-69-21).

Note 1 to paragraph (e)(1)(i) of this AD:  Each end of the supply hose may
also be referred to as fitting or banjo.

(ii) If the cable tie  does not pass  through  the  hose,  before  further
     flight,  remove the EFS supply hose  from service and replace it with
     an airworthy part.

(iii) If the cable tie  passes through  the supply hose,  mark a green dot
      with indelible ink on the base of the supply hose and write "SB 025-
      69-21" above the external identification marking of the EFS with in-
      delible ink.

(2) As of the effective date of this AD, do not install an EFS supply hose
    manufactured before January 2014 on any helicopter unless the require-
    ments in paragraph (e)(1) of this AD have been completed.

(f) ALTERNATIVE METHODS OF COMPLIANCE (AMOCS)

(1) The Manager, Rotorcraft Standards Branch,  FAA,  may approve AMOCs for
    this AD. Send your proposal to: Daniel E. Moore, Aviation Safety Engi-
    neer,  Denver,  ACO Branch,  Compliance & Airworthiness Division, FAA,
    26805 East 68th Ave., Denver, CO 80249;  telephone 303-342-1086; email
    9-Denver-Aircraft-Cert@faa.gov.

(2) For operations conducted under a 14 CFR part 119 operating certificate
    or under 14 CFR part 91,  subpart K, the FAA suggests that  you notify
    your  principal  inspector,  or  lacking  a  principal  inspector, the
    manager of the local  flight standards district office  or certificate
    holding district office before  operating any aircraft complying  with
    this AD through an AMOC.

(g) ADDITIONAL INFORMATION

    The subject of this AD is addressed in Transport Canada AD No. CF-2020
    -212R1, dated August 19, 2020. You may view the Transport Canada AD on
    the internet at https://www.regulations.gov in the AD Docket.

(h) SUBJECT

    Joint Aircraft Service Component (JASC) Code 2560, Emergency Equipment

Issued on January 5, 2021. Lance T Gant, Director, Compliance & Airworthi-
ness Division, Aircraft Certification Service.

DATES: The FAA must receive comments on this proposed AD by May 7, 2021.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2020-1170; Project Identifier MCAI-2020-00720-R]
RIN 2120-AA64

Airworthiness Directives; Bell Textron Canada Limited Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

-----------------------------------------------------------------------

SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for Bell Textron Canada Limited (Bell) Model 429 helicopters. This
proposed AD would require inspecting certain serial-numbered Emergency
Flotation System (EFS) inflation hoses and depending on the results of
those inspections, marking certain parts or removing certain parts from
service. This proposed AD was prompted by a report that a float
compartment on an EFS did not inflate. The actions of this proposed AD
are intended to address an unsafe condition on these products.

DATES: The FAA must receive comments on this proposed AD by May 7,
2021.

ADDRESSES: You may send comments by any of the following methods:

Federal eRulemaking Docket: Go to https://www.regulations.gov. Follow the
online instructions for sending your comments electronically.

Fax: 202-493-2251.

Mail: Send comments to the U.S. Department of
Transportation, Docket Operations, M-30, West Building Ground Floor,
Room W12-140, 1200 New Jersey Avenue SE, Washington, DC 20590-0001.

Hand Delivery: Deliver to the "Mail" address between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.

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. FAA-2020-1170;
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 proposed AD, the Transport Canada AD, any comments received, and
other information. The street address for Docket Operations is listed
above. Comments will be available in the AD docket shortly after
receipt.

For service information identified in this proposed rule, contact
Bell Textron Canada Limited, 12,800 Rue de l'Avenir, Mirabel, Quebec
J7J1R4; telephone 450-437-2862 or 800-363-8023; fax 450-433-0272; or at
https://www.bellcustomer.com. You may view this referenced service
information at the FAA, Office of the Regional Counsel, Southwest
Region, 10101 Hillwood Pkwy., Room 6N-321, Fort Worth, TX 76177.

FOR FURTHER INFORMATION CONTACT: Daniel E. Moore, Aviation Safety
Engineer, Denver ACO Branch, Compliance & Airworthiness Division, FAA,
26805 East 68th Ave., Denver, CO 80249; telephone 303-342-1086; email
daniel.e.moore@faa.gov.

SUPPLEMENTARY INFORMATION:

Comments Invited

The FAA invites you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under ADDRESSES. Include "Docket No. FAA-2020-1170; Project Identifier
MCAI-2020-00720-R" at the beginning of your comments. The most helpful
comments reference a specific portion of the proposal, explain the
reason for any recommended change, and include supporting data. The FAA
will consider all comments received by the closing date and may amend
this proposal because of those comments.

Except for Confidential Business Information (CBI) as described in
the following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to
https://www.regulations.gov, including any personal information you
provide. The agency will also post a report summarizing each
substantive verbal contact received about this proposal.

Confidential Business Information

CBI is commercial or financial information that is both customarily
and actually treated as private by its owner. Under the Freedom of
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public
disclosure. If your comments responsive to this NPRM contain commercial
or financial information that is customarily treated as private, that
you actually treat as private, and that is relevant or responsive to
this NPRM, it is important that you clearly designate the submitted
comments as CBI. Please mark each page of your submission containing
CBI as "PROPIN." The FAA will treat such marked submissions as
confidential under the FOIA, and they will not be placed in the public
docket of this NPRM. Submissions containing CBI should be sent to
Daniel E. Moore, Aviation Safety Engineer, Denver ACO Branch,
Compliance & Airworthiness Division, FAA, 26805 East 68th Ave., Denver,
CO 80249; telephone 303-342-1086; ; email daniel.e.moore@faa.gov. Any
commentary that the FAA receives which is not specifically designated
as CBI will be placed in the public docket for this rulemaking.

Discussion

Transport Canada, which is the aviation authority for Canada, has
issued Canadian AD No. CF-2020-21R1, issued August 19, 2020 to correct
an unsafe condition for Bell Model 429 helicopters, all serial numbers.
The Transport Canada AD advises that during maintenance on an EFS, the
third compartment of the left forward float did not inflate. Transport
Canada advises that an investigation determined the supply hose for the
gas flow from the pressurized cylinder to the float compartment was
blocked due to a manufacturing defect. Bell advised that similar supply
hoses are installed on various EFS part numbers, which could be
installed on different helicopter type designs. Transport Canada
advises that this condition, if not detected and corrected, could
result in partial inflation of the EFS during an emergency landing on
water, preventing a timely egress from the helicopter, and injury to
helicopter occupants.

FAA's Determination

These helicopters have been approved by the aviation authority of
Canada and are approved for operation in the United States. Pursuant to
the FAA's bilateral agreement with Canada, Transport Canada, its
technical representative, has notified the FAA of the unsafe condition
described in the Transport Canada AD. The FAA is proposing this AD
after evaluating all known relevant information and determining that an
unsafe condition is likely to exist or develop on other helicopters of
the same type design.

Related Service Information Under 1 CFR Part 51


The FAA reviewed Safran Aerosystems Services Service Bulletin No.
025-69-21, Revision 00, dated, March 23, 2020 (SB 025-69-21). SB 025-
69-21 is attached as an appendix to Bell Alert Service Bulletin No.
429-20-52, dated March 30, 2020 (ASB 429-20-52). SB 025-69-21 is
proposed for incorporation by reference in this proposed AD. ASB 429-
20-52 is not proposed for incorporation by reference in this proposed
AD. SB 025-69-21 specifies, for certain EFSs manufactured
before July 2019, and any float supply hose manufactured before January
2014, performing a special inspection to verify that there is no
blockage through the float supply hoses of the EFS inflation system.

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.

Proposed AD Requirements

This proposed AD would require, within 100 hours time-in-service
(TIS), removing each EFS supply hose and inspecting each end (also
referred to as fitting or banjo) of the EFS supply hose using a certain
plastic cable tie, and depending on the results of those inspections,
removing from service certain parts and replacing those parts with
airworthy parts. This proposed AD would also require marking a green
dot on the base of certain supply hoses and writing "SB 025-69-21"
above the external identification marking of the EFS with indelible
ink. Finally, the proposed AD would prohibit installing any EFS supply
hose manufactured before January 2014 unless it has been inspected in
accordance with the proposed AD.

Differences Between This Proposed AD and the Transport Canada AD

The Transport Canada AD requires compliance within 600 hours air
time or within the next 24-month inspection of the EFS, whichever
occurs first, whereas this proposed AD would require compliance within
100 hours TIS. The Transport Canada AD limits the applicability to
certain EFS supply hoses listed in SB 025-69-21, whereas this proposed
AD would apply to certain EFS supply hoses manufactured before January
2014 but excludes EFS supply hoses marked with "SB 025-69-21."

Costs of Compliance

The FAA estimates that this proposed AD would affect 110
helicopters of U.S. Registry. The FAA estimates that operators may
incur the following costs in order to comply with this proposed AD.
Labor costs are estimated at $85 per work-hour.

Removing and inspecting each EFS supply hose would take about 0.75
work-hour, for an estimated cost of $64 per hose.

Installing or replacing each EFS supply hose would take about 0.10
work-hour with a minimal parts cost, for an estimated cost of $9 per
hose.

Marking each EFS supply hose with a green dot and the applicable
service bulletin number would take a minimal amount of time at a
nominal cost.

According to Safran's 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 Safran. Accordingly, all costs are included in this cost
estimate.

Authority for This Rulemaking

Title 49 of the United States Code specifies the FAA's 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 Agency's 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. 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.

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 39--AIRWORTHINESS DIRECTIVES

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

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

Sec. 39.13 [Amended]

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