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Federal Register / Vol. 86, No. 164 / Friday, August 27, 2021 / Proposed Rules
of 5,000 hours TIS to the total hours TIS
indicated on the component history card or equivalent record for the collective lever P/
N 412010408101.
Note 1 to paragraph g1i: Bell Helicopter service information identifies helicopters with serial numbers 36570, 36579, 36587, and 36593 through 36602
inclusive, as helicopters originally delivered with a Strake and FastFin system installed.
ii For helicopters with a Strake and FastFin system P/N 412705040101
installed after delivery from the manufacturer, add a permanent penalty of 50% of the total hours TIS accumulated by the collective lever P/N 412010408101 on the component history card or equivalent record for the collective lever P/N 412010
408101.
Note 2 to paragraph g1ii: The Accomplishment Instructions, part II, paragraph 2., of Bell Helicopter Alert Service Bulletin 41212151, Revision A, dated July 8, 2014, provides an example of calculating and adding a permanent penalty of 50%.
iii For helicopters without a Strake and FastFin system P/N 412705040101
installed, but with a collective lever P/N
412010408101 installed, add a permanent penalty of 50% of the total hours TIS
accumulated by the collective lever on the component history card or equivalent record for the collective lever.
2 Before further flight, remove from service any collective lever P/N 412010
408101 that has reached or exceeded its life limit of 10,000 total hours TIS. Thereafter, remove from service each collective lever P/
N 412010408101 on or before reaching its life limit of 10,000 total hours TIS.
3 As of the effective date of this AD, do not install a new zero total hours TIS
collective lever P/N 412010408101 unless a permanent penalty of 5,000 hours TIS has been added to the total hours TIS on its component history card or equivalent record.
4 As of the effective date of this AD, do not install a used collective lever P/N 412
010408101 unless a permanent penalty of 50% of the total hours TIS accumulated by the collective lever has been added to the total hours TIS on its component history card or equivalent record.

lotter on DSK11XQN23PROD with PROPOSALS1

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 certification office, send it to the attention of the person identified in paragraph j of this AD.
Information may be emailed to: 9-ASW-190COS@faa.gov.
2 Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/
certificate holding district office.

VerDate Sep<11>2014

16:25 Aug 26, 2021

Jkt 253001

j Related Information For more information about this AD, contact Haytham Alaidy, Aerospace Engineer, Certification & Program Management Section, DSCO Branch, Compliance & Airworthiness Division, FAA, 10101 Hillwood Pkwy., Fort Worth, TX
76177; telephone 817 2225224; email haytham.alaidy@faa.gov.
Issued on August 19, 2021.
Ross Landes, Deputy Director for Regulatory Operations, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202118383 Filed 82621; 8:45 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210661; Project Identifier AD202001349E
RIN 2120AA64

Airworthiness Directives; Pratt &
Whitney Turbofan Engines Federal Aviation Administration FAA, DOT.
ACTION: Notice of proposed rulemaking NPRM.
AGENCY:

The FAA proposes to supersede Airworthiness Directive AD
20110702, which applies to all Pratt & Whitney P&W JT8D209, JT8D217, JT8D217A, JT8D217C, and JT8D219
model turbofan engines. AD 201107
02 requires initial and repetitive torque inspections of the 3rd-stage and 4thstage low-pressure turbine LPT blades.
AD 20110702 also requires replacement of the LPT blade if wear limits are exceeded, replacement of the LPT-to-exhaust case bolts and nuts, and installation of crushable sleeve spacers on the bolts. Since the FAA issued AD
20110702, the FAA received a report of an MD82 airplane, equipped with a JT8D217 engine, experiencing an engine surge that resulted in the fracture of an LPT blade. This proposed AD
would retain certain requirements of AD
20110702, while revising the inspection thresholds and replacement intervals for the 3rd-stage and 4th-stage LPT blades. 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 October 12, 2021.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
SUMMARY:

PO 00000

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Fmt 4702

Sfmt 4702

Federal eRulemaking Portal: Go to https www.regulations.gov. Follow the instructions for submitting comments.
Fax: 202 4932251.
Mail: U.S. Department of Transportation, Docket Operations, M
30, West Building Ground Floor, Room W12140, 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 Pratt & Whitney, 400 Main Street, East Hartford, CT
06118; phone: 800 5650140; email:
help24@prattwhitney.com; website:
https fleetcare.prattwhitney.com. You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call 781 238
7759.
Examining the AD Docket You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210661; 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:
Nicholas Paine, Aviation Safety Engineer, ECO Branch, FAA, 1200
District Avenue, Burlington, MA 01803;
phone: 781 2387116; fax: 781 238
7199; email: nicholas.j.paine@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.
FAA20210661; Project Identifier AD
202001349E 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

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