
[Federal Register Volume 76, Number 145 (Thursday, July 28, 2011)]
[Proposed Rules]
[Pages 45211-45212]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2011-19048]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2009-0555; Directorate Identifier 2009-NE-18-AD]


Airworthiness Directives; Honeywell International Inc. TPE331-10 
and TPE331-11 Series Turboprop Engines

AGENCY: Federal Aviation Administration, DOT.

ACTION: Proposed rule; withdrawal.

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SUMMARY: This action withdraws a notice of proposed rulemaking (NPRM) 
that proposed an airworthiness directive (AD) supersedure, applicable 
to Honeywell International Inc. TPE331-10 and TPE331-11 series 
turboprop engines. That action would have required adding 360 first 
stage turbine disk serial numbers (S/Ns) to the applicability. Since we 
issued that NPRM, we decided not to supersede AD 2009-17-05, but 
instead to issue a new NPRM for those additional 360 parts. 
Accordingly, we withdraw the proposed rule.

FOR FURTHER INFORMATION CONTACT: Joseph Costa, Aerospace Engineer, Los 
Angeles Aircraft Certification Office, FAA, Transport Airplane 
Directorate, 3960 Paramount Blvd., Lakewood, CA 90712-4137; phone: 562-
627-5246; fax: 562-627-5210; e-mail: joseph.costa@faa.gov.

SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal 
Aviation Regulations (14 CFR part 39) to add a new airworthiness 
directive (AD),

[[Page 45212]]

applicable to Honeywell International Inc. TPE331-10 and TPE331-11 
series turboprop engines, was published in the Federal Register on June 
22, 2010 (75 FR 35354). The proposed rule would have added 360 S/Ns to 
the applicability of AD 2009-17-05. The proposed actions were intended 
to prevent uncontained failure of the first stage turbine disk and 
damage to the airplane.
    Since we issued that NPRM, we decided not to supersede AD 2009-17-
05, as doing so would require us to bring forward the effectivity dates 
for removal or inspection of the suspect turbine disks listed in the 
AD. Instead, we are planning to issue a new NPRM that will address the 
additional 360 turbine disk S/Ns requiring inspection or removal.
    Since this action only withdraws a notice of proposed rulemaking, 
it is neither a proposed nor a final rule and therefore, is not covered 
under Executive Order 12866, the Regulatory Flexibility Act, or DOT 
Regulatory Policies and Procedures (44 FR 11034, February 26, 1979).

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Safety.

The Withdrawal

    Accordingly, the notice of proposed rulemaking, Docket No. FAA-
2009-0555, published in the Federal Register on June 22, 2010 (75 FR 
35354), is withdrawn.

    Issued in Burlington, Massachusetts, on July 22, 2011.
Peter A. White,
Acting Manager, Engine and Propeller Directorate, Aircraft 
Certification Service.
[FR Doc. 2011-19048 Filed 7-27-11; 8:45 am]
BILLING CODE 4910-13-P


