AD 2003-05-10R1

AD Final Rules - 030510R1.pdf
Copy URL
Document Versions
 Feedback
DetailsAttachments/Public Comments
AD Number:
2003-05-10R1
Document Type:
AD Final Rules
Docket Number:
2001-NE-21-AD
Subject Heading:
Airworthiness Directives; General Electric Company CF34-3A1, -3B, and -3B1 Turbofan Engines
Subject:
B-Sump Scavenge Screens
Status:
Current
Citation:
Federal Register: October 14, 2003 (Volume 68, Number 198)
Citation Publish Date:
10/14/2003
Effective Date:
11/18/2003
Make:
General Electric Aircraft Engines
Model:
CF34-3A1 | CF34-3B | CF34-3B1
Product Type:
Engine
Product Subtype:
Affected AD:
Superseded AD:
2003-05-10
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
Automatic Zoom
Actual Size
Page Fit
Page Width
⁨50⁩%
⁨75⁩%
⁨100⁩%
⁨125⁩%
⁨150⁩%
⁨200⁩%
⁨300⁩%
⁨400⁩%
125%
of ⁨6⁩
1


[Federal Register: October 14, 2003 (Volume 68, Number 198)]


[Rules and Regulations]


[Page 59104-59106]


From the Federal Register Online via GPO Access [wais.access.gpo.gov]


[DOCID:fr14oc03-9]


–––––––––––––––––––––––––––––––––––


DEPARTMENT OF TRANSPORTATION


Federal Aviation Administration


14 CFR Part 39


[Docket No. 2001-NE-21-AD; Amendment 39-13337; AD 2003-05-10R1]


RIN 2120-AA64


Airworthiness Directives; General Electric Company CF34-3A1, -3B, and -3B1 Turbofan


Engines


AGENCY:
 
Federal Aviation Administration, DOT.


ACTION:
 
Final rule.


–––––––––––––––––––––––––––––––––––


SUMMARY:
 
This amendment revises an existing airworthiness directive (AD), that applies to


General Electric Company (GE) CF34-3A1, -3B, and -3B1 turbofan engines with scavenge screens


part numbers (P/Ns) 4047T95P01 and 5054T86G02 installed in the B-sump oil scavenge system.


That AD currently requires initial and repetitive visual inspections and cleaning of the B-sump


scavenge screens until a screenless fitting is installed. This amendment requires the same initial and


repetitive visual inspections and cleaning of the B-sump scavenge screens until a screenless fitting is


installed. This amendment also corrects a typographical error, and introduces a less restrictive


terminating action schedule. This amendment is prompted by the need to correct a typographical error


and by the need to introduce a less restrictive terminating action schedule. We are issuing this AD to


prevent B-sump scavenge screen blockage due to coking which could result in ignition of B-sump oil


in the secondary air system, fan drive shaft separation, and uncontained engine failure.


DATES:
 
Effective November 18, 2003. The incorporation by reference of certain publications, listed


in the regulations, was approved previously by the Director of the Federal Register as of April 2,


2003 (68 FR 12806; March 18, 2003).


ADDRESSES:
 
The service information referenced in this AD may be obtained from GE Aircraft


Engines, 1000 Western Avenue, Lynn, MA 01910; Attention: CF34 Product Support Engineering,


Mail Zone: 34017; telephone (781) 594-6323; fax (781) 594-0600. This information may be


examined, by appointment, at the Federal Aviation Administration (FAA), New England Region,


Office of the Regional Counsel, 12 New England Executive Park, Burlington, MA; or at the Office of


the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC.
2


FOR FURTHER INFORMATION CONTACT:
 
Barbara Caufield, Aerospace Engineer, Engine


Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park,


Burlington, MA 01803-5299; telephone (781) 238-7146; fax (781) 238-7199.


SUPPLEMENTARY INFORMATION:
 
A proposal to amend part 39 of the Federal Aviation


Regulations (14 CFR part 39) by revising AD 2003-05-10, Amendment 39-13086 (68 FR 12806,


March 18, 2003), which applies to GE CF34-3A1, -3B, and -3B1 turbofan engines with scavenge


screens P/Ns 4047T95P01 and 5054T86G02 installed in the B-sump oil scavenge system was


published in the Federal Register on July 8, 2003 (68 FR 40573). That action proposed to require the


same initial and repetitive visual inspections and cleaning of the B-sump scavenge screens until a


screenless fitting is installed as in AD 2003-05-10. That action also proposed to correct a


typographical error, and introduces a less restrictive terminating action schedule in accordance with


GE Alert Service Bulletin (ASB) CF34-AL S/B 79-A0014, Revision 3, dated January 31, 2003; ASB


CF34-BJ S/B 79-A0015, Revision 3, dated January 31, 2003; GE ASB CF34-AL S/B 79-A0016 and


ASB CF34-BJ S/B 79-A0017, both dated June 17, 2002.


Comments


Interested persons have been afforded an opportunity to participate in the making of this


amendment. No comments were received on the proposal or the FAA's determination of the cost to


the public. The FAA has determined that air safety and the public interest require the adoption of the


rule as proposed.


Regulatory Analysis


This final rule does not have federalism implications, as defined in Executive Order 13132,


because it would not have a substantial direct effect on the States, on the relationship between the


national government and the States, or on the distribution of power and responsibilities among the


various levels of government. Accordingly, the FAA has not consulted with state authorities prior to


publication of this final rule.


For the reasons discussed above, I certify that this action (1) is not a ''significant regulatory


action'' under Executive Order 12866; (2) is not a ''significant rule'' under the DOT Regulatory


Policies and Procedures (44 FR 11034, February 26, 1979); and (3) will not have a significant


economic impact, positive or negative, on a substantial number of small entities under the criteria of


the Regulatory Flexibility Act. A final evaluation has been prepared for this action and it is contained


in the Rules Docket. A copy of it may be obtained by contacting the Rules Docket at the location


provided under the caption ADDRESSES.


List of Subjects in 14 CFR Part 39


Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.


Adoption of the Amendment


Accordingly, pursuant to the authority delegated to me by the Administrator, the Federal Aviation


Administration amends part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows: