Airworthiness Directives; CFM International S.A. Model CFM56 Turbofan Engines, 71951-71952 [E8-28055]

Download as PDF Federal Register / Vol. 73, No. 229 / Wednesday, November 26, 2008 / Proposed Rules Issued in Burlington, Massachusetts, on November 18, 2008. Peter A. White, Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. E8–28054 Filed 11–25–08; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2008–1245; Directorate Identifier 2008–NE–27–AD] RIN 2120–AA64 Airworthiness Directives; CFM International S.A. Model CFM56 Turbofan Engines Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Notice of proposed rulemaking (NPRM). AGENCY: SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD) for CFM International S.A. CFM56–2, CFM56–3, CFM56–5A, CFM56–5B, CFM56–5C, and CFM56–7B series turbofan engines with certain part number (P/N) and serial number (SN) high-pressure compressor (HPC) 4–9 spools installed. This proposed AD would require removing certain HPC 4– 9 spools listed by P/N and SN in this proposed AD. This proposed AD results from reports of certain HPC 4–9 spools that Propulsion Technology LLC (PTLLC) improperly repaired and returned to service. We are proposing this AD to prevent cracking of the HPC 4–9 spool, which could result in possible uncontained failure of the spool and damage to the airplane. DATES: We must receive any comments on this proposed AD by January 26, 2009. Use one of the following addresses to comment on this proposed AD. • Federal eRulemaking Portal: Go to http://www.regulations.gov and follow the instructions for sending your comments electronically. • Mail: Docket Management Facility, U.S. Department of Transportation, 1200 New Jersey Avenue, SE., West Building Ground Floor, Room W12–140, Washington, DC 20590–0001. • Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. • Fax: (202) 493–2251. jlentini on PROD1PC65 with PROPOSALS ADDRESSES: VerDate Aug<31>2005 17:02 Nov 25, 2008 Jkt 217001 FOR FURTHER INFORMATION CONTACT: Stephen K. Sheely, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: stephen.k.sheely@faa.gov; telephone (781) 238–7750; fax (781) 238–7199. SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send us any written relevant data, views, or arguments regarding this proposal. Send your comments to an address listed under ADDRESSES. Include ‘‘Docket No. FAA– 2008–1245; Directorate Identifier 2008– NE–27–AD’’ in the subject line of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of the proposed AD. We will consider all comments received by the closing date and may amend the proposed AD in light of those comments. We will post all comments we receive, without change, to http:// www.regulations.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact with FAA personnel concerning this proposed AD. Using the search function of the Web site, anyone can find and read the comments in any of our dockets, including, if provided, the name of the individual who sent the comment (or signed the comment on behalf of an association, business, labor union, etc.). You may review the DOT’s complete Privacy Act Statement in the Federal Register published on April 11, 2000 (65 FR 19477–78). 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 proposed AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Operations office (telephone (800) 647–5527) is the same as the Mail address provided in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. Discussion We have received reports of lifelimited parts (LLPs) HPC 4–9 spools that PTLLC, repair station certificate No. XZ4R084M, improperly repaired and returned to service. Our investigation found some areas of the seal tooth PO 00000 Frm 00004 Fmt 4702 Sfmt 4702 71951 plasma coating that were thicker than allowed by the CFM56 engine overhaul limits. The investigation also found: • Seal tooth plasma overspray between the seal teeth, which is not permitted by the engine overhaul manual, and • Cracks that were missed during the fluorescent penetrant inspection. These conditions, if not corrected, could cause cracking of the HPC 4–9 spool, which could result in possible uncontained failure of the spool and damage to the airplane. FAA’s Determination and Requirements of the Proposed AD We have evaluated all pertinent information and identified an unsafe condition that is likely to exist or develop on other products of this same type design. We are proposing this AD, which would require removing certain HPC 4–9 spools that have a P/N and SN listed in Table 1 of this proposed AD before accumulating 8,900 cycles since repair at PTLLC or within 1,100 cycles from the effective date of this AD, whichever occurs later. Costs of Compliance We estimate that this proposed AD would affect 26 engines installed on airplanes of U.S. registry. We also estimate that it would take about 410 work-hours per engine to perform the proposed actions, and that the average labor rate is $80 per work-hour. Required parts would cost about $227,500 per engine. Based on these figures, we estimate the total cost of the proposed AD to U.S. operators to be $6,767,800. Authority for This Rulemaking Title 49 of the United States Code specifies the FAA’s authority to issue rules on aviation safety. Subtitle I, Section 106, describes the authority of the FAA Administrator. Subtitle VII, Aviation Programs, describes in more detail the scope of the Agency’s authority. We are issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701, ‘‘General requirements.’’ Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. E:\FR\FM\26NOP1.SGM 26NOP1 71952 Federal Register / Vol. 73, No. 229 / Wednesday, November 26, 2008 / Proposed Rules Regulatory Findings We have determined that this proposed AD would not have federalism implications under Executive Order 13132. This proposed AD 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. For the reasons discussed above, I certify that the proposed AD: 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. Would not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. We prepared a regulatory evaluation of the estimated costs to comply with this proposed AD. You may get a copy of this summary at the address listed under ADDRESSES. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Safety. The Proposed Amendment Under the authority delegated to me by the Administrator, the Federal Aviation Administration proposes to amend 14 CFR part 39 as follows: PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive: CFM International S.A.: Docket No. FAA– 2008–1245; Directorate Identifier 2008– NE–27–AD. Comments Due Date (a) The Federal Aviation Administration (FAA) must receive comments on this airworthiness directive (AD) action by January 26, 2009. jlentini on PROD1PC65 with PROPOSALS Applicability (c) This AD applies to CFM International S.A. CFM56–2, CFM56–3, CFM56–5A, CFM56–5B, CFM56–5C, and CFM56–7B series turbofan engines with a high-pressure compressor (HPC) 4–9 spool that has a part number (P/N) and serial number (SN) specified in Table 1 of this AD, installed. 17:02 Nov 25, 2008 Jkt 217001 TABLE 1—HPC 4–9 SPOOLS BY P/N AND SN HPC 4–9 Spool P/N 9513M93G08 1590M29G01 1590M29G01 1590M29G01 1590M29G01 1590M29G01 1590M29G01 1590M29G01 1590M29G01 1590M29G01 1590M29G01 1590M29G01 1590M29G01 1590M29G01 1588M89G03 1588M89G03 1588M89G03 1588M89G03 1588M89G03 1588M89G03 1277M97G02 1277M97G02 1277M97G02 1277M97G02 9513M93G11 1358M94G01 ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ HPC 4–9 Spool SN MPON1641 GWN0087D GWN00MG2 GWN011LG GWN01285 GWN021JC GWNFY923 GWNFY824 GWNPA756 GWNPG015 GWNWC515 GWNWR523 GWNWT631 GWNYC495 GWN03K1R GWN03N61 GWN03N6C GWN040L9 GWN0468N GWN05AMO GWNE1298 GWNE1564 GWNJ7891 GWNT4187 GWNB3373 GWNU0169 Unsafe Condition (d) This AD results from reports of certain HPC 4–9 spools that Propulsion Technology LLC (PTLLC) improperly repaired and returned to service. We are issuing this AD to prevent cracking of the HPC 4–9 spool, which could result in possible uncontained failure of the spool and damage to the airplane. Compliance (e) You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done. Removing the HPC 4–9 Spool (f) Remove HPC 4–9 spools from service that have a P/N and S/N listed in Table 1 of this AD before accumulating 8,900 cycles since repair at PTLLC or within 1,100 cycles from the effective date of this AD, whichever occurs later. Installation Prohibition (g) After the effective date of this AD, do not install any engine with an HPC 4–9 spool that has a P/N and SN specified in Table 1 of this AD. Affected ADs (b) None. VerDate Aug<31>2005 These engines are installed on, but not limited to, Airbus A319, A320, and A340 airplanes and Boeing 737 airplanes. Alternative Methods of Compliance (h) The Manager, Engine Certification Office, has the authority to approve alternative methods of compliance for this AD if requested using the procedures found in 14 CFR 39.19. Related Information (i) Contact Stephen K. Sheely, Aerospace Engineer, Engine Certification Office, FAA, PO 00000 Frm 00005 Fmt 4702 Sfmt 4702 Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: stephen.k.sheely@faa.gov; telephone (781) 238–7750; fax (781) 238– 7199, for more information about this AD. Issued in Burlington, Massachusetts, on November 18, 2008. Peter A. White, Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. E8–28055 Filed 11–25–08; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2008–1243; Directorate Identifier 2007–SW–03–AD] RIN 2120–AA64 Airworthiness Directives; Erickson AirCrane Incorporated (Erickson) Model S–64F Helicopters Federal Aviation Administration, DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: SUMMARY: This document proposes adopting a new airworthiness directive (AD) for Erickson Model S–64F helicopters. The AD would require inspections for cracking or working rivets in each left and right splice fitting (transition fitting), the pylon bulkhead assembly—canted (bulkhead assembly), the pylon steel strap (strap), and the attaching rotary rudder boom and pylon structure. This proposal is prompted by several reports of cracking in the transition fittings, the bulkhead assembly, and pylon. The actions specified by the proposed AD are intended to detect cracking in the rotary rudder boom or pylon due to fatigue, and to prevent failure from static overload and subsequent loss of control of the helicopter. DATES: Comments must be received on or before January 26, 2009. ADDRESSES: Use one of the following addresses to submit comments on this proposed AD: • 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: U.S. Department of Transportation, Docket Operations, M– E:\FR\FM\26NOP1.SGM 26NOP1

Agencies

[Federal Register Volume 73, Number 229 (Wednesday, November 26, 2008)]
[Proposed Rules]
[Pages 71951-71952]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-28055]


-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2008-1245; Directorate Identifier 2008-NE-27-AD]
RIN 2120-AA64


Airworthiness Directives; CFM International S.A. Model CFM56 
Turbofan Engines

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (DOT).

ACTION: Notice of proposed rulemaking (NPRM).

-----------------------------------------------------------------------

SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD) 
for CFM International S.A. CFM56-2, CFM56-3, CFM56-5A, CFM56-5B, CFM56-
5C, and CFM56-7B series turbofan engines with certain part number (P/N) 
and serial number (SN) high-pressure compressor (HPC) 4-9 spools 
installed. This proposed AD would require removing certain HPC 4-9 
spools listed by P/N and SN in this proposed AD. This proposed AD 
results from reports of certain HPC 4-9 spools that Propulsion 
Technology LLC (PTLLC) improperly repaired and returned to service. We 
are proposing this AD to prevent cracking of the HPC 4-9 spool, which 
could result in possible uncontained failure of the spool and damage to 
the airplane.

DATES: We must receive any comments on this proposed AD by January 26, 
2009.

ADDRESSES: Use one of the following addresses to comment on this 
proposed AD.
     Federal eRulemaking Portal: Go to http://
www.regulations.gov and follow the instructions for sending your 
comments electronically.
     Mail: Docket Management Facility, U.S. Department of 
Transportation, 1200 New Jersey Avenue, SE., West Building Ground 
Floor, Room W12-140, Washington, DC 20590-0001.
     Hand Delivery: Deliver to Mail address above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
     Fax: (202) 493-2251.

FOR FURTHER INFORMATION CONTACT: Stephen K. Sheely, Aerospace Engineer, 
Engine Certification Office, FAA, Engine & Propeller Directorate, 12 
New England Executive Park, Burlington, MA 01803; e-mail: 
stephen.k.sheely@faa.gov; telephone (781) 238-7750; fax (781) 238-7199.

SUPPLEMENTARY INFORMATION:

Comments Invited

    We invite you to send us any written relevant data, views, or 
arguments regarding this proposal. Send your comments to an address 
listed under ADDRESSES. Include ``Docket No. FAA-2008-1245; Directorate 
Identifier 2008-NE-27-AD'' in the subject line of your comments. We 
specifically invite comments on the overall regulatory, economic, 
environmental, and energy aspects of the proposed AD. We will consider 
all comments received by the closing date and may amend the proposed AD 
in light of those comments.
    We will post all comments we receive, without change, to http://
www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact 
with FAA personnel concerning this proposed AD. Using the search 
function of the Web site, anyone can find and read the comments in any 
of our dockets, including, if provided, the name of the individual who 
sent the comment (or signed the comment on behalf of an association, 
business, labor union, etc.). You may review the DOT's complete Privacy 
Act Statement in the Federal Register published on April 11, 2000 (65 
FR 19477-78).

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 proposed AD, the regulatory 
evaluation, any comments received, and other information. The street 
address for the Docket Operations office (telephone (800) 647-5527) is 
the same as the Mail address provided in the ADDRESSES section. 
Comments will be available in the AD docket shortly after receipt.

Discussion

    We have received reports of life-limited parts (LLPs) HPC 4-9 
spools that PTLLC, repair station certificate No. XZ4R084M, improperly 
repaired and returned to service. Our investigation found some areas of 
the seal tooth plasma coating that were thicker than allowed by the 
CFM56 engine overhaul limits. The investigation also found:
     Seal tooth plasma overspray between the seal teeth, which 
is not permitted by the engine overhaul manual, and
     Cracks that were missed during the fluorescent penetrant 
inspection.
    These conditions, if not corrected, could cause cracking of the HPC 
4-9 spool, which could result in possible uncontained failure of the 
spool and damage to the airplane.

FAA's Determination and Requirements of the Proposed AD

    We have evaluated all pertinent information and identified an 
unsafe condition that is likely to exist or develop on other products 
of this same type design. We are proposing this AD, which would require 
removing certain HPC 4-9 spools that have a P/N and SN listed in Table 
1 of this proposed AD before accumulating 8,900 cycles since repair at 
PTLLC or within 1,100 cycles from the effective date of this AD, 
whichever occurs later.

Costs of Compliance

    We estimate that this proposed AD would affect 26 engines installed 
on airplanes of U.S. registry. We also estimate that it would take 
about 410 work-hours per engine to perform the proposed actions, and 
that the average labor rate is $80 per work-hour. Required parts would 
cost about $227,500 per engine. Based on these figures, we estimate the 
total cost of the proposed AD to U.S. operators to be $6,767,800.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, Section 106, describes the 
authority of the FAA Administrator. Subtitle VII, Aviation Programs, 
describes in more detail the scope of the Agency's authority.
    We are issuing this rulemaking under the authority described in 
Subtitle VII, Part A, Subpart III, Section 44701, ``General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.

[[Page 71952]]

Regulatory Findings

    We have determined that this proposed AD would not have federalism 
implications under Executive Order 13132. This proposed AD 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.
    For the reasons discussed above, I certify that the proposed AD:
    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. Would not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.
    We prepared a regulatory evaluation of the estimated costs to 
comply with this proposed AD. You may get a copy of this summary at the 
address listed under ADDRESSES.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Safety.

The Proposed Amendment

    Under the authority delegated to me by the Administrator, the 
Federal Aviation Administration proposes to amend 14 CFR part 39 as 
follows:

PART 39--AIRWORTHINESS DIRECTIVES

    1. The authority citation for part 39 continues to read as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

    2. The FAA amends Sec.  39.13 by adding the following new 
airworthiness directive:

CFM International S.A.: Docket No. FAA-2008-1245; Directorate 
Identifier 2008-NE-27-AD.

Comments Due Date

    (a) The Federal Aviation Administration (FAA) must receive 
comments on this airworthiness directive (AD) action by January 26, 
2009.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to CFM International S.A. CFM56-2, CFM56-3, 
CFM56-5A, CFM56-5B, CFM56-5C, and CFM56-7B series turbofan engines 
with a high-pressure compressor (HPC) 4-9 spool that has a part 
number (P/N) and serial number (SN) specified in Table 1 of this AD, 
installed. These engines are installed on, but not limited to, 
Airbus A319, A320, and A340 airplanes and Boeing 737 airplanes.

                  Table 1--HPC 4-9 Spools by P/N and SN
------------------------------------------------------------------------
             HPC 4-9 Spool P/N                    HPC 4-9 Spool SN
------------------------------------------------------------------------
9513M93G08................................  MPON1641
1590M29G01................................  GWN0087D
1590M29G01................................  GWN00MG2
1590M29G01................................  GWN011LG
1590M29G01................................  GWN01285
1590M29G01................................  GWN021JC
1590M29G01................................  GWNFY923
1590M29G01................................  GWNFY824
1590M29G01................................  GWNPA756
1590M29G01................................  GWNPG015
1590M29G01................................  GWNWC515
1590M29G01................................  GWNWR523
1590M29G01................................  GWNWT631
1590M29G01................................  GWNYC495
1588M89G03................................  GWN03K1R
1588M89G03................................  GWN03N61
1588M89G03................................  GWN03N6C
1588M89G03................................  GWN040L9
1588M89G03................................  GWN0468N
1588M89G03................................  GWN05AMO
1277M97G02................................  GWNE1298
1277M97G02................................  GWNE1564
1277M97G02................................  GWNJ7891
1277M97G02................................  GWNT4187
9513M93G11................................  GWNB3373
1358M94G01................................  GWNU0169
------------------------------------------------------------------------

Unsafe Condition

    (d) This AD results from reports of certain HPC 4-9 spools that 
Propulsion Technology LLC (PTLLC) improperly repaired and returned 
to service. We are issuing this AD to prevent cracking of the HPC 4-
9 spool, which could result in possible uncontained failure of the 
spool and damage to the airplane.

Compliance

    (e) You are responsible for having the actions required by this 
AD performed within the compliance times specified unless the 
actions have already been done.

Removing the HPC 4-9 Spool

    (f) Remove HPC 4-9 spools from service that have a P/N and S/N 
listed in Table 1 of this AD before accumulating 8,900 cycles since 
repair at PTLLC or within 1,100 cycles from the effective date of 
this AD, whichever occurs later.

Installation Prohibition

    (g) After the effective date of this AD, do not install any 
engine with an HPC 4-9 spool that has a P/N and SN specified in 
Table 1 of this AD.

Alternative Methods of Compliance

    (h) The Manager, Engine Certification Office, has the authority 
to approve alternative methods of compliance for this AD if 
requested using the procedures found in 14 CFR 39.19.

Related Information

    (i) Contact Stephen K. Sheely, Aerospace Engineer, Engine 
Certification Office, FAA, Engine & Propeller Directorate, 12 New 
England Executive Park, Burlington, MA 01803; e-mail: 
stephen.k.sheely@faa.gov; telephone (781) 238-7750; fax (781) 238-
7199, for more information about this AD.

    Issued in Burlington, Massachusetts, on November 18, 2008.
Peter A. White,
Assistant Manager, Engine and Propeller Directorate, Aircraft 
Certification Service.
[FR Doc. E8-28055 Filed 11-25-08; 8:45 am]
BILLING CODE 4910-13-P