Document ID: FAA-2023-0993-0003
Agency: faa
Document Type: Notice
Title: Petition for Exemption; Summary: Rolls-Royce Deutschland Ltd and Co. KG
Posted Date: 2023-05-05T04:00Z

[Federal Register Volume 88, Number 87 (Friday, May 5, 2023)]
[Notices]
[Pages 29175-29176]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2023-09649]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

[Summary Notice No. PE-2023-14]

Petition for Exemption; Summary of Petition Received; Rolls-Royce 
Deutschland Ltd & Co KG

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of petition for exemption received.

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SUMMARY: This notice contains a summary of a petition seeking relief 
from specified requirements of Federal Aviation Regulations. The 
purpose of this notice is to improve the public's awareness of, and 
participation in, the FAA's exemption process. Neither publication of 
this notice nor the inclusion or omission of information in the summary 
is intended to affect the legal status of the petition or its final 
disposition.

DATES: Comments on this petition must identify the petition docket 
number and must be received on or before May 25, 2023.

ADDRESSES: Send comments identified by docket number FAA-2023-0993 
using any of the following methods:
     Federal eRulemaking Portal: Go to http://www.regulations.gov and follow the online instructions for sending your 
comments electronically.
     Mail: Send comments to Docket Operations, M-30, U.S. 
Department of Transportation (DOT), 1200 New Jersey Avenue SE, Room 
W12-140, West Building Ground Floor, Washington, DC, 20590-0001.
     Hand Delivery or Courier: Take comments to Docket 
Operations in Room W12-140 of the West Building Ground Floor at 1200 
New Jersey Avenue SE, Washington, DC, between 9 a.m. and 5 p.m., Monday 
through Friday, except Federal holidays.
     Fax: Fax comments to Docket Operations at 202-493-2251.
    Privacy: In accordance with 5 U.S.C. 553(c), DOT solicits comments 
from the public to better inform its rulemaking process. DOT posts 
these comments, without edit, including any personal information the 
commenter provides, to http://www.regulations.gov, as described in the 
system of records notice (DOT/ALL-14 FDMS), which can be reviewed at 
http://www.dot.gov/privacy.
    Docket: Background documents or comments received may be read at 
http://www.regulations.gov at any time. Follow the online instructions 
for accessing the docket or go to the Docket Operations in Room W12-140 
of the West Building Ground Floor at 1200 New Jersey Avenue SE, 
Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, 
except Federal holidays.

FOR FURTHER INFORMATION CONTACT: Michael H. Harrison, AIR-646, Federal 
Aviation Administration, 2200 S 216th St., Des Moines, WA 98198, phone 
and fax (206) 231-3368, email [email protected].
    This notice is published pursuant to 14 CFR 11.85.

[[Page 29176]]

    Issued in Washington, DC, on May 2, 2023.
Candace Keefe,
Acting Manager, Technical Writing Section.

Petition for Exemption

    Docket No.: FAA-2023-0993.
    Petitioner: Rolls-Royce Deutschland Ltd & Co KG.
    Section(s) of 14 CFR Affected: Sec.  33.27(c).
    Description of Relief Sought: Harald Lackner on behalf of Rolls-
Royce Deutschland Ltd & Co KG (RRD) is seeking relief from 14 CFR 
33.27(c), which requires the highest overspeed that results from a 
complete loss of load on a turbine rotor, except as provided by 
paragraph (f) of this section, must be included in the overspeed 
conditions considered by paragraphs (b)(3)(i), (b)(3)(ii), and (b)(4) 
of this section, regardless of whether that overspeed results from a 
failure within the engine or external to the engine. The overspeed 
resulting from any other single failure must be considered when 
selecting the most limiting overspeed conditions applicable to each 
rotor. Overspeeds resulting from combinations of failures must also be 
considered unless the applicant can show that the probability of 
occurrence is not greater than extremely remote (probability range of 
10-7 to 10-9 per engine flight hour).
    Specifically, RRD is proposing the FAA grant relief to exclude the 
integral disc drive arm connecting the flange of the low pressure shaft 
to the stage 3 disc of the low pressure turbine rotor on the Model 
BR700-730B2-14 engine from failure consideration in determining the 
highest overspeed that would result from a complete loss of load on a 
turbine rotor.

[FR Doc. 2023-09649 Filed 5-4-23; 8:45 am]
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