Quiero saber acerca de...

Federal Register / Vol. 86, No. 37 / Friday, February 26, 2021 / Proposed Rules d Subject Joint Aircraft System Component JASC
Code 7230, Turbine Engine Compressor Section.
e Unsafe Condition This AD was prompted by a report from the manufacturer that the Automated Damage Tracking System ADTS may under-count the number of cycles accrued by the impeller and the high-pressure compressor HPC
rotor, which could result in the failure of these components. The FAA is issuing this AD to prevent failure of the impeller and the HPC rotor. The unsafe condition, if not addressed, could result in the uncontained release of the impeller or the HPC rotor, damage to the engine, damage to the helicopter, and loss of control of the helicopter.
f Compliance Comply with this AD within the compliance times specified, unless already done.
g Required Actions Before exceeding 7,000 starts or 14,000
flight cycles since new CSN on the affected engine, or prior to removal of the engine from the aircraft for the purpose of sending the engine to a repair or overhaul facility, whichever occurs first after the effective date of this AD:
1 Use the manual low-cycle fatigue LCF
counting method to determine the accumulated LCF cycles for the impeller and the HPC rotor using paragraph 3., Accomplishment Instructions, of P&WC Alert Service Bulletin ASB PW21072A57142, Revision 1, dated March 26, 2020 or PW210
72A57143, Revision 1, dated March 26, 2020, as applicable for the engine model.
2 After performing the actions required by paragraph g1 of this AD, use the manual LCF counting method specified in paragraph g1 of this AD to count subsequent LCF cycles on the impeller and HPC rotor. Do not use the ADTS to count subsequent LCF cycles on the impeller or the HPC rotor.

khammond on DSKJM1Z7X2PROD with PROPOSALS

h Definition For the purpose of this AD, a start is an engine start followed by one or more flights.
i Alternative Methods of Compliance AMOCs 1 The Manager, ECO 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 ECO Branch, send it to the attention of the person identified in Related Information.
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.
j Related Information 1 For more information about this AD, contact Barbara Caufield, Aviation Safety
VerDate Sep<11>2014

16:16 Feb 25, 2021

Jkt 253001

Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781
2387146; fax: 781 2387199; email:
barbara.caufield@faa.gov.
2 Refer to Transport Canada Civil Aviation TCCA AD CF202013, dated April 28, 2020, for more information. You may examine the TCCA AD in the AD docket at https www.regulations.gov by searching for and locating it in Docket No. FAA2021
0103.
3 For service information identified in this AD, contact Pratt & Whitney Canada Corp., 1000 Marie-Victorin, Longueuil, Quebec, J4G 1A1, Canada; phone: 800 268
8000. You may view this referenced 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 2387759.
Issued on February 19, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202103814 Filed 22521; 8:45 am BILLING CODE 491013P

11653

Federal eRulemaking Portal: Go to https www.regulations.gov. Follow the instructions for submitting comments.
Fax: 2024932251.
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 Boeing Commercial Airplanes, Attention: Contractual & Data Services C&DS, 2600 Westminster Blvd., MC 110SK57, Seal Beach, CA
907405600; telephone 5627971717;
internet https
www.myboeingfleet.com. You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 2062313195.

DEPARTMENT OF TRANSPORTATION

Examining the AD Docket
Federal Aviation Administration
You may examine the AD docket on the internet at https
www.regulations.gov by searching for and locating Docket No. FAA2021
0099; 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:
Rebel Nichols, Aerospace Engineer, Propulsion Section, FAA, Seattle ACO
Branch, 2200 South 216th St., Des Moines, WA 98198; phone and fax: 206
2313556; email: rebel.nichols@faa.gov.
SUPPLEMENTARY INFORMATION:

14 CFR Part 39
Docket No. FAA20210099; Project Identifier AD202001272T
RIN 2120AA64

Airworthiness Directives; The Boeing Company Airplanes Federal Aviation Administration FAA, DOT.
ACTION: Notice of proposed rulemaking NPRM.
AGENCY:

The FAA proposes to adopt a new airworthiness directive AD for certain The Boeing Company Model 767200, 300, 300F, and 400ER
series airplanes. This proposed AD was prompted by significant changes made to the airworthiness limitations AWLs related to fuel tank ignition prevention and the nitrogen generation system.
This proposed AD would require revising the existing maintenance or inspection program, as applicable, to incorporate the latest revision of the AWLs. The FAA is proposing this AD to address the unsafe condition on these products.

SUMMARY:

The FAA must receive comments on this proposed AD by April 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:
DATES:

PO 00000

Frm 00009

Fmt 4702

Sfmt 4702

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.
FAA20210099; Project Identifier AD
202001272T 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

E:FRFM26FEP1.SGM

26FEP1