Document ID: FAA-2008-1207-0002
Agency: faa
Document Type: Rule
Title: Airworthiness Directives: Honeywell International Inc. ALF502L-2 and ALF502L-2C Turbofan Engines
Posted Date: 2009-04-13T04:00Z

[Federal Register: April 13, 2009 (Volume 74, Number 69)]
[Rules and Regulations]               
[Page 16755-16758]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr13ap09-3]                         

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2008-1207; Directorate Identifier 2007-NE-47-AD; 
Amendment 39-15880; AD 2009-08-07]
RIN 2120-AA64

 
Airworthiness Directives; Honeywell International Inc. ALF502L-2 
and ALF502L-2C Turbofan Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for 
Honeywell International Inc. ALF502L-2 and ALF502L-2C turbofan engines 
with certain high-pressure compressor (HPC) first stage discs 
installed. This AD requires performing a dimensional inspection to 
determine if excessive disc balance material was removed and a magnetic 
particle inspection if the disc

[[Page 16756]]

passes the dimensional inspection. This AD results from reports of 
discs found with excessive material removed from the balancing 
locations of the disc. We are issuing this AD to prevent the discs from 
fracturing before reaching the currently published life limit. A disc 
fracture could result in an uncontained failure of the disc and damage 
to the airplane.

DATES: This AD becomes effective May 18, 2009.

ADDRESSES: You can get the service information identified in this AD 
from Honeywell International Inc. 111 S. 34th Street, Phoenix, AZ 
85034-2802, U.S.A.; telephone (800) 601-3099, Web site http://
portal.honeywell.com/wps/portal/aero.
    The Docket Operations office is located at Docket Management 
Facility, U.S. Department of Transportation, 1200 New Jersey Avenue, 
SE., West Building Ground Floor, Room W12-140, Washington, DC 20590-
0001.

FOR FURTHER INFORMATION CONTACT: Robert Baitoo, Aerospace Engineer, Los 
Angeles Aircraft Certification Office, FAA, Transport Airplane 
Directorate, 3960 Paramount Blvd., Lakewood, CA 90712-4137; e-mail: 
robert.baitoo@faa.gov; telephone (562) 627-5245; fax (562) 627-5210.

SUPPLEMENTARY INFORMATION: The FAA proposed to amend 14 CFR part 39 
with a proposed AD. The proposed AD applies to Honeywell International 
Inc. ALF502L-2 and ALF502L-2C turbofan engines with certain HPC first 
stage discs installed. We published the proposed AD in the Federal 
Register on November 28, 2008 (73 FR 72370). That action proposed to 
require performing a dimensional inspection to determine if excessive 
disc balance material was removed and a magnetic particle inspection if 
the disc passes the dimensional inspection.

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 (telephone (800) 647-5527) is provided in 
the ADDRESSES section. Comments will be available in the AD docket 
shortly after receipt.

Comments

    We provided the public the opportunity to participate in the 
development of this AD. We received no comments on the proposal or on 
the determination of the cost to the public.

Conclusion

    We have carefully reviewed the available data and determined that 
air safety and the public interest require adopting the AD as proposed.

Costs of Compliance

    We estimate that this AD will affect 148 engines installed on 
airplanes of U.S. registry. We also estimate that it will take about 3 
work-hours per engine to perform the actions, and that the average 
labor rate is $80 per work-hour. Required parts will cost about $21,000 
per engine. Based on these figures, we estimate the total cost of the 
AD to U.S. operators to be $3,143,520.

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.

Regulatory Findings

    We have determined that this AD will not have federalism 
implications under Executive Order 13132. This AD will 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 this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866;
    (2) Is not a ``significant rule'' under 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.
    We prepared a summary of the costs to comply with this AD and 
placed it in the AD Docket. 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.

Adoption of the Amendment

0
Accordingly, under the authority delegated to me by the Administrator, 
the Federal Aviation Administration amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
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]

0
2. The FAA amends Sec.  39.13 by adding the following new airworthiness 
directive:

2009-08-07 Honeywell International Inc. (Formerly AlliedSignal and 
Lycoming): Amendment 39-15880. Docket No. FAA-2008-1207; Directorate 
Identifier 2007-NE-47-AD.

Effective Date

    (a) This airworthiness directive (AD) becomes effective May 18, 
2009.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Honeywell International Inc. ALF502L-2 
and ALF502L-2C turbofan engines with high pressure compressor (HPC) 
first stage discs, part numbers (P/Ns) 2-101-331-03, 2-101-331-04, 
and 2-101-331-10, installed. These engines are installed on, but not 
limited to, Bombardier CL-600-1A11 airplanes.

Unsafe Condition

    (d) This AD results from reports of discs found with excessive 
material removed from the balancing locations of the disc. We are 
issuing this AD to prevent the discs from fracturing before reaching 
the currently published life limit. A disc fracture could result in 
an uncontained failure of the disc and damage to the airplane.

Compliance

    (e) You are responsible for having the actions required by this 
AD performed at the next shop visit, but not later than 2,500 
cycles-in-service after the effective date of this AD, unless the 
actions have already been done.

Visual Inspection

    (f) For discs with 5,000 or more cycles-since-new on the 
effective date of this AD, perform a dimensional inspection of the 
HPC first stage disc to determine if excessive disc

[[Page 16757]]

balance material was removed. See the following Figure 1 for limits.
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    (g) Replace the disc if excessive disc balance material was 
removed. See limits in Figure 1 of this AD.
    (h) If the removed balance material condition is acceptable, 
perform a magnetic particle inspection of the disc rim and slots for 
cracks using a 3 to 7 power magnification glass. The Engine Overhaul 
Manual, 72-34-11, Inspection/Check, contains information on the 
magnetic particle inspection procedure. Contact Honeywell 
International Inc., 111 S. 34th Street, Phoenix, AZ 85034-2802, 
U.S.A.; telephone (800) 601-3099, Web site http://
portal.honeywell.com/wps/portal/aero, for a copy of this service 
information.
    (i) Replace the disc if you find any cracks.

Alternative Methods of Compliance

    (j) The Manager, Los Angeles Aircraft 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

    (k) Honeywell Alert Service Bulletin ALF/LF A72-1102, dated 
April 24, 2007, contains information that pertains to the subject of 
this AD. Contact Honeywell International Inc., 111 S. 34th Street, 
Phoenix, AZ 85034-2802, U.S.A.; telephone (800) 601-3099, Web site 
http://portal.honeywell.com/wps/portal/aero, for a copy of this 
service information.
    (l) Contact Robert Baitoo, Aerospace Engineer, Los Angeles 
Aircraft Certification Office, FAA, Transport Airplane Directorate, 
3960 Paramount Blvd., Lakewood, CA 90712-4137; e-mail: 
robert.baitoo@faa.gov; telephone (562) 627-5245; fax (562) 627-5210, 
for more information about this AD.

Material Incorporated by Reference

    (m) None.

    Issued in Burlington, Massachusetts, on April 6, 2009.
Peter A. White,
Assistant Manager, Engine and Propeller Directorate, Aircraft 
Certification Service.
[FR Doc. E9-8264 Filed 4-10-09; 8:45 am]

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