AD 2011-18-51R1

AD Final Rules - 2011-18-51R1.pdf
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AD Number:
2011-18-51R1
Document Type:
AD Final Rules
Docket Number:
FAA-2011-0935
Subject Heading:
Airworthiness Directives; Honeywell International Inc. TPE331 Model Turboprop Engines With Certain D...Show more
Subject:
Main shaft bearing
Status:
Current
Citation:
Federal Register Volume 76, Number 192 (Tuesday, October 4, 2011)
Citation Publish Date:
10/04/2011
Effective Date:
10/19/2011
Make:
Honeywell International Inc.
Model:
TPE331-1 | TPE331-10 | TPE331-10A | TPE331-10AV | TPE331-10B | TPE331-10G | TPE331-10GP | TPE331-10GR ...Show more
Product Type:
Engine
Product Subtype:
Affected AD:
Superseded AD:
2011-18-51
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
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[Federal Register Volume 76, Number 192 (Tuesday, October 4, 2011)]


[Rules and Regulations]


[Pages 61255-61257]


From the Federal Register Online via the Government Printing Office [www.gpo.gov]


[FR Doc No: 2011-25481]


––––––––––––––––––––––––––––––––––


DEPARTMENT OF TRANSPORTATION


Federal Aviation Administration


14 CFR Part 39


[Docket No. FAA-2011-0935; Directorate Identifier 2011-NE-28-AD; Amendment 39-16813;


AD 2011-18-51R1]


RIN 2120-AA64


Airworthiness Directives; Honeywell International Inc. TPE331 Model Turboprop Engines


With Certain Dixie Aerospace, LLC Main Shaft Bearings


AGENCY:
 
Federal Aviation Administration (FAA), DOT.


ACTION:
 
Final rule; request for comments.


––––––––––––––––––––––––––––––––––


SUMMARY:
 
We are revising an existing emergency airworthiness directive (AD) for all Honeywell


International Inc. TPE331 model turboprop engines with a part manufacturer approval (PMA)


replacement Dixie Aerospace, LLC main shaft bearing part number (P/N) 3108098-1WD, installed.


That emergency AD was not published in the Federal Register, but was sent to all known U.S.


owners and operators of these engines. That AD currently requires an inspection of the airplane


records to determine if a Dixie Aerospace, LLC main shaft bearing, P/N 3108098-1WD, is installed


in the engine, and if installed, removal of that bearing from service, before further flight. This AD


requires the same actions. This AD revision was prompted by the need to list the affected bearings by


serial number (S/N) in the AD for clarification. We are issuing this AD to correct the unsafe


condition on these products.


DATES:
 
This AD is effective October 19, 2011.


We must receive comments on this AD by November 18, 2011.


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 http://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.


1
2


Examining the AD Docket


You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at


the Docket Operations Office between 9 a.m. and 5 p.m., Monday through Friday, except Federal


holidays. The AD docket contains this AD, the regulatory evaluation, any comments received, and


other information. The street address for the Docket Operations Office (phone: 800-647-5527) is in


the ADDRESSES section. Comments will be available in the AD docket shortly after receipt.


FOR FURTHER INFORMATION CONTACT:
 
Juanita Craft, Aerospace Engineer, FAA, Atlanta


Aircraft Certification Office, 1701 Columbia Avenue, College Park, GA 30337; phone: 404-474-


5584; fax: 404-474-5606; e-mail: juanita.craft@faa.gov.


SUPPLEMENTARY INFORMATION:


Discussion


On August 17, 2011, we issued Emergency AD 2011-18-51, for all Honeywell International Inc.


TPE331 model turboprop engines with a PMA replacement Dixie Aerospace, LLC main shaft


bearing, P/N 3108098-1WD, installed. That AD requires inspection of the airplane records to


determine if a Dixie Aerospace, LLC main shaft bearing, part number (P/N) 3108098-1WD, is


installed in the engine, and if installed, removal of that bearing from service, before further flight.


That emergency AD resulted from an excessive failure rate of PMA main shaft bearings, P/N


3108098-1WD, manufactured by Dixie Aerospace, LLC. That emergency AD was not published in


the Federal Register, but was sent to all known U.S. owners and operators of these engines. This AD


requires the same actions. We are issuing this AD to prevent engine main rotor seizure resulting in


engine damage, shutdown, and damage to the airplane.


Under 14 CFR 39.1, the Engine & Propeller Directorate is only authorized to issue airworthiness


directives that apply to aircraft engines, propellers, or appliances (hereinafter referred to in this AD as


''products'') when an unsafe condition exists in a product; and that unsafe condition is likely to exist


or develop in other products of the same type design. Therefore, although the unsafe condition is


caused by the failure of certain PMA parts manufactured by Dixie Aerospace, LLC, for the product


affected, we must include the type certificate (TC) holder's legal name in the subject line of the AD.


For this AD, the TC holder is Honeywell International Inc.


Actions Since AD 2011-18-51 Was Issued


We are revising Emergency AD 2011-18-51 with this final rule because we determined the need


to list the affected bearings by serial number (S/N) in the AD for clarification.


FAA's Determination


We are issuing this AD because we evaluated all relevant information and determined the unsafe


condition described previously is likely to exist or develop in other products of the same type design.


AD Requirements


This AD requires an inspection of records to determine if certain S/N Dixie Aerospace, LLC


main shaft bearings, P/N 3108098-1WD, are installed in Honeywell International Inc. TPE331 model


turboprop engines. Within 10 operating hours, affected bearings must be removed from service.