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PROPOSED AD BELL TEXTRON INC. (TYPE CERTIFICATE PREVIOUSLY HELD BY BELL HELICOPTER TEXTRON INC.): Docket No. FAA-2021-1003; Project Identifier AD-2021-01141-R.
(a) COMMENTS DUE DATE

    The FAA must receive comments  on  this  airworthiness directive  (AD)
    action by December 20, 2021.

(b) AFFECTED ADS

    This  AD  replaces AD  2021-15-51,  Amendment 39-21678  (86  FR 43406,
    August 9, 2021) (AD 2021-15-51).

(c) APPLICABILITY

    This AD applies to Bell Textron Inc. (type certificate previously held
    by Bell Helicopter Textron Inc.) Model 204B, 205A, 205A-1, 205B,  210,
    and 212 helicopters,  certificated in any  category, with an  outboard
    main rotor  hub strap  pin (pin)  part number  204-012-104-005 with  a
    serial number prefix "FNFS" installed.

(d) SUBJECT

    Joint Aircraft System Component (JASC) Code: 6200, Main Rotor System.

(e) UNSAFE CONDITION

    This AD was prompted  by a fatal accident  in which a pin  sheared off
    during flight,  which resulted  in the  main rotor  blade and the main
    rotor head detaching from the  helicopter. The FAA is issuing  this AD
    to address this  unsafe condition and  prevent loss of  control of the
    helicopter.

(f) COMPLIANCE

    Comply  with this  AD within  the compliance  times specified,  unless
    already done.

(g) REQUIRED ACTIONS

(1) For Model 204B, 205A, 205A-1, 205B, and 212 helicopters:

(i) Before further flight  from August 24, 2021  (the effective date of AD
    2021-15-51),  remove from service any pin  that is identified in para-
    graph (c) of this AD.

(ii) After August 24, 2021 (the effective date of AD 2021-15-51),  do  not
     install any pin that is identified in paragraph (c) of this AD on any
     helicopter.

(2) For Model 210 helicopters:

(i) Before further flight after the effective date of this AD, remove from
    service any pin that is identified in paragraph (c) of this AD.

(ii) As of the effective date of this AD,  do not install  any pin that is
     identified in paragraph (c) of this AD on any helicopter.

(h) SPECIAL FLIGHT PERMITS

    Special flight permits are prohibited.

(i) ALTERNATIVE METHODS OF COMPLIANCE (AMOCS)

(1) The Manager, DSCO Branch, FAA,  has the authority to approve AMOCs for
    this AD, if requested using the  procedures found in 14 CFR 39.19.  In
    accordance with  14 CFR  39.19, send  your request  to your  principal
    inspector or local Flight  Standards District Office, as  appropriate.
    If sending  information directly  to the  manager of  the DSCO Branch,
    send it to the attention of the person identified in paragraph (j)  of
    this AD. Information may be emailed to: 9-ASW-190-COS@faa.gov.

(2) Before using any approved AMOC,  notify your appropriate principal in-
    spector, or lacking  a principal inspector,  the manager of  the local
    flight standards district office/certificate holding district office.

(j) RELATED INFORMATION

    For more information about this AD,  contact  David Wilson,  Aerospace
    Engineer, DSCO Branch, Compliance & Airworthiness Division, FAA, 10101
    Hillwood Pkwy., Fort Worth, TX 76177;  telephone (817) 222-5786; email
    david.wilson@faa.gov.

Issued on November 14, 2021.  Ross Landes, Deputy Director for  Regulatory
Operations, Compliance  & Airworthiness  Division, Aircraft  Certification
Service.

DATES: The FAA must receive comments  on this proposed AD  by December 20,
2021.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2021-1003; Project Identifier AD-2021-01141-R]
RIN 2120-AA64

Airworthiness Directives; Bell Textron Inc. (Type Certificate
Previously Held by Bell Helicopter Textron Inc.) Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: The FAA proposes to supersede Airworthiness Directive (AD)
2021-15-51, which applies to Bell Textron Inc. (type certificate
previously held by Bell Helicopter Textron Inc.) Model 204B, 205A,
205A-1, 205B, and 212 helicopters. AD 2021-15-51 requires removing
certain main rotor hub strap pins (pin) from service and prohibits
installing them on any helicopter. Since the FAA issued AD 2021-15-51,
it was determined that a defective pin could also be installed on Bell
Textron Inc. Model 210 helicopters. This proposed AD would continue to
require the actions in AD 2021-15-51 and expand the applicability to
add Model 210 helicopters. The FAA is proposing this AD to address the
unsafe condition on these products.

DATES: The FAA must receive comments on this proposed AD by December
20, 2021.

ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the
instructions for submitting comments.
Fax: (202) 493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590.
Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
For service information identified in this NPRM, contact Bell
Textron, Inc., P.O. Box 482, Fort Worth, TX 76101; telephone (450) 437-
2862 or (800) 363-8023; fax (450) 433-0272; email
productsupport@bellflight.com; or at https://www.bellflight.com/support/
contact-support. You may view this service information at the
FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood
Pkwy., Room 6N-321, Fort Worth, TX 76177. For information on the
availability of this material at the FAA, call (817) 222-5110.

Examining the AD Docket

You may examine the AD docket at https://www.regulations.gov by
searching for and locating Docket No. FAA-2021-1003; 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 NPRM, any comments
received, and other information. The street address for Docket
Operations is listed above.

FOR FURTHER INFORMATION CONTACT: David Wilson, Aerospace Engineer, DSCO
Branch, Compliance & Airworthiness Division, FAA, 10101 Hillwood Pkwy.,
Fort Worth, TX 76177; telephone (817) 222-5786; email
david.wilson@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-2021-1003; Project Identifier
AD-2021-01141-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
the 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 proposed AD.

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 David
Wilson, Aerospace Engineer, DSCO Branch, Compliance & Airworthiness
Division, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone
(817) 222-5786; email david.wilson@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.

Background

The FAA issued Emergency AD 2021-15-51 on July 6, 2021, and it
published as a Final rule; request for comments on August 9, 2021 as
Amendment 39-21678 (86 FR 43406) (AD 2021-15-51). AD 2021-15-51 applies
to Bell Textron Inc., Model 204B, 205A, 205A-1, 205B, and 212
helicopters with a pin part number (P/N) 204-012-104-005 with a serial
number (S/N) prefix ``FNFS'' installed. AD 2021-15-51 requires removing
from service all P/N 204-012-104-005 pins with an S/N prefix ``FNFS''
before further flight and prohibits installing an affected pin on any
helicopter as of the effective date of the AD. AD 2021-15-51 was
prompted by a fatal accident of a Model 212 helicopter in which a pin
P/N 204-012-104-005 with an S/N prefix ``FNFS'' sheared off during
flight, which resulted in the main rotor blade and the main rotor head
detaching from the helicopter. The pin had accumulated only 20 total
hours time-in-service (TIS). An inspection of a different Model 212
helicopter revealed that another pin installed, and made by the same
manufacturer and with the same S/N prefix, was deformed; this pin had
accumulated only 29 total hours TIS. Pins of the same P/N can also be
installed on Bell Textron Inc., Model 204B, 205A, 205A-1, 205B, and 210
helicopters. Failure of the pin could result in the main rotor blade
detaching from the helicopter and subsequent loss of control of the
helicopter.

Actions Since AD 2021-15-51 Was Issued

Since the FAA issued AD 2021-15-51, it was determined that pin P/N
204-012-104-005 with S/N prefix ``FNFS'' can also be installed on Model
210 helicopters. Additionally, the FAA discovered that an incorrect
U.S. fleet count was provided in the Costs of Compliance section of AD
2021-15-51. This proposed AD corrects that count and adds Model 210
helicopters to that count. Additionally, while AD 2021-15-51 was
initially issued as an emergency AD and then published in the Federal
Register as a Final rule; request for comments, the FAA has determined
that an NPRM is appropriate to add the Model 210 helicopter to the
applicability. Even though the unsafe condition exists, the four Model
210 helicopters on the U.S. Registry do not currently have an affected
pin installed making immediate adoption of an AD to add the Model 210
helicopter to the applicability without providing an opportunity for
public comments prior to adoption unnecessary.
Lastly, service information discussed in AD 2021-15-51 has been
revised to include updated warranty information and additional
accomplishment instructions for disposing of the affected pins,
therefore, this proposed AD discusses this revised service information.
The FAA is proposing this AD to address the unsafe condition on
these products.

FAA's Determination

The FAA is issuing this NPRM after determining that the unsafe
condition described previously is likely to exist or develop on other
products of the same type designs.

Related Service Information

The FAA reviewed the following Bell Alert Service Bulletins (ASBs),
each Revision A and dated July 22, 2021:
ASB 204B-21-74 for Model 204B helicopters, S/Ns 2001
through 2070 and 2196 through 2199;
ASB 205-21-117 for Model 205A and 205A-1 helicopters, S/Ns
30001 through 30065, 30067 through 30165, 30167 through 30187, 30189
through 30296, and 30298 through 30332;
ASB 205B-21-71 for Model 205B helicopters, S/Ns 30066,
30166, 30188 and 30297;
ASB 210-21-14 for all Model 210 helicopters, and
ASB 212-21-165 for Model 212 helicopters, S/Ns 30501
through 30999, 31101 through 31311, 32101 through 32142, and 35001
through 35103.
The ASBs specify removing all P/N 204-012-104-005 pins with an S/N
prefix ``FNFS'' before further flight. The ASBs also specify that,
although the investigation is still in progress, removing these pins
from service is required. The ASBs state that these pins may not have
been manufactured in accordance with the engineering design
requirements and may therefore shear as a result of this
nonconformance.

Proposed AD Requirements in This NPRM

This proposed AD would retain all of the requirements of AD 2021-
15-51. This proposed AD would apply to all helicopters that were
affected by AD 2021-15-51 and would add Model 210 helicopters to the
applicability.

Interim Action

The FAA considers that this proposed AD would be an interim action.
If final action is later identified, the FAA might consider further
rulemaking.

Costs of Compliance

The FAA estimates that this AD, if adopted as proposed, would
affect 155 helicopters of U.S. Registry. Labor rates are estimated at
$85 per work-hour. Based on these numbers, the FAA estimates the
following costs to comply with this proposed AD.
Replacing up to four pins would take about 20 work-hours and parts
would cost about $1,756 for four pins for an estimated cost of up to
$3,456 per helicopter, and up to $535,680 for the U.S. fleet.
The FAA has included all known costs in its cost estimate.
According to the manufacturer, however, some of the costs of this
proposed AD may be covered under warranty, thereby reducing the cost
impact on affected individuals.

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 above, I certify that the 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 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:

a. Removing Airworthiness Directive AD 2021-15-51, Amendment 39-21678
(86 FR 43406, August 9, 2021); and

b. Adding the following new airworthiness directive: