[Federal Register Volume 59, Number 131 (Monday, July 11, 1994)]
[Unknown Section]
[Page 0]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 94-15732]
[[Page Unknown]]
[Federal Register: July 11, 1994]
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DEPARTMENT OF TRANSPORTATION
14 CFR Part 39
[Docket No. 93-NM-222-AD; Amendment 39-8960 AD 94-14-08]
Airworthiness Directives; Canadair Model CL-600-2B16 (CL-601-3A)
Series Airplanes
AGENCY: Federal Aviation Administration, DOT.
ACTION: Final rule.
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SUMMARY: This amendment adopts a new airworthiness directive (AD),
applicable to certain Canadair Model CL-600-2B16 series airplanes, that
requires inspection to detect chafing of the wiring harness of the air
driven generator (ADG), modification of the wiring harness, and repair
of any chafed harness. This amendment is prompted by a report that the
wiring harness on certain airplanes was produced in a configuration
that is subject to chafing and electrical shorting. The actions
specified by this AD are intended to prevent chafing or shorting of the
wiring harness, which could result in loss of ADG power to the
essential bus when the ADG is deployed during an emergency situation.
DATES: Effective August 10, 1994.
The incorporation by reference of certain publications listed in
the regulations is approved by the Director of the Federal Register as
of August 10, 1994.
ADDRESSES: The service information referenced in this AD may be
obtained from Bombardier, Inc., Canadair, Aerospace Group, P.O. Box
6087, Station A, Montreal, Quebec, H3C 3G9 Canada. This information may
be examined at the Federal Aviation Administration (FAA), Transport
Airplane Directorate, Rules Docket, 1601 Lind Avenue, SW., Renton,
Washington; or at the FAA, Engine and Propeller Directorate, New York
Aircraft Certification Office, 181 South Franklin Avenue, Room 202,
Valley Stream, New York; or at the Office of the Federal Register, 800
North Capitol Street, NW., suite 700, Washington, DC.
FOR FURTHER INFORMATION CONTACT: Michele Maurer, Aerospace Engineer,
Systems and Equipment Branch, ANE-173, FAA Engine and Propeller
Directorate, New York Aircraft Certification Office, 181 South Franklin
Avenue, Room 202, Valley Stream, New York 11581; telephone (516) 791-
6427; fax (516) 791-9024.
SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal
Aviation Regulations (14 CFR part 39) to include an airworthiness
directive (AD) that is applicable to certain Canadair Model CL-600-2B16
series airplanes was published in the Federal Register on March 14,
1994 (59 FR 11735). That action proposed to require inspection to
detect chafing and modification of the wiring harness of the air driven
generator (ADG), and repair of any chafed harness.
Interested persons have been afforded an opportunity to participate
in the making of this amendment. No comments were submitted in response
to 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.
The FAA estimates that 25 airplanes of U.S. registry will be
affected by this AD, that it will take approximately 1 work hour per
airplane to accomplish the required actions, and that the average labor
rate is $55 per work hour. Based on these figures, the total cost
impact of the AD on U.S. operators is estimated to be $1,375, or $55
per airplane.
The FAA estimates that it will take approximately 9 work hours per
airplane to accomplish the modification and the average labor rate is
$55 per work hour. Required parts will cost approximately $199 per
airplane. Based on these figures, the total cost impact of the
modification on U.S. operators is estimated to be $17,350, or $694 per
airplane.
Based on the figures, above, the total (inspection plus
modification) cost impact of the AD on U.S. operators is estimated to
be $18,725, or $749 per airplane.
The total cost impact figure discussed above is based on
assumptions that no operator has yet accomplished any of the
requirements of this AD action, and that no operator would accomplish
those actions in the future if this AD were not adopted.
The regulations adopted herein will not have substantial direct
effects 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. Therefore, in
accordance with Executive Order 12612, it is determined that this final
rule does not have sufficient federalism implications to warrant the
preparation of a Federalism Assessment.
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 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
from 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:
PART 39--AIRWORTHINESS DIRECTIVES
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. App. 1354(a), 1421 and 1423; 49 U.S.C.
106(g); and 14 CFR 11.89.
Sec. 39.13 [Amended]
2. Section 39.13 is amended by adding the following new
airworthiness directive:
94-14-08 Canadair: Amendment 39-8960. Docket 93-NM-222-AD.
Applicability: Model CL-600-2B16 series airplanes having serial
numbers 5099 through 5131, inclusive; certificated in any category.
Note 1: Airplanes having serial numbers 5001 through 5098,
inclusive, are subject to the requirements of AD 91-19-01, amendment
39-8026 (which is similar in content to this amendment).
Compliance: Required as indicated, unless accomplished
previously.
To prevent loss of emergency power to the essential bus when the
air driven generator (ADG) is deployed, accomplish the following:
(a) Within 25 hours time-in-service after the effective date of
this AD, inspect to detect chafing of the wiring harness of the ADG
in accordance with Canadair Alert Service Bulletin A601-0370,
Revision 1, dated April 15, 1993. If chafing is found, prior to
further flight, repair in accordance with the service bulletin.
(b) Within 60 days after the effective date of this AD, modify
the harness installation of the ADG in accordance with Canadair
Alert Service Bulletin A601-0370, Revision 1, dated April 15, 1993.
(c) An alternative method of compliance or adjustment of the
compliance time that provides an acceptable level of safety may be
used if approved by the Manager, New York Aircraft Certification
Office (ACO), FAA, Engine and Propeller Directorate. Operators shall
submit their requests through an appropriate FAA Principal
Maintenance Inspector, who may add comments and then send it to the
Manager, New York ACO.
Note 2: Information concerning the existence of approved
alternative methods of compliance with this AD, if any, may be
obtained from the New York ACO.
(d) Special flight permits may be issued in accordance with
sections 21.197 and 21.199 of the Federal Aviation Regulations (14
CFR 21.197 and 21.199) to operate the airplane to a location where
the requirements of this AD can be accomplished.
(e) The inspection and modification shall be done in accordance
with Canadair Alert Service Bulletin A601-0370, Revision 1, dated
April 15, 1993. This incorporation by reference was approved by the
Director of the Federal Register in accordance with 5 U.S.C. 552(a)
and 1 CFR part 51. Copies may be obtained from Bombardier, Inc.,
Canadair, Aerospace Group, P.O. Box 6087, Station A, Montreal,
Quebec, H3C 3G9 Canada. Copies may be inspected at the FAA,
Transport Airplane Directorate, 1601 Lind Avenue SW., Renton,
Washington; or at the FAA, Engine and Propeller Directorate, New
York Aircraft Certification Office, 181 South Franklin Avenue, Room
202, Valley Stream, New York; or at the Office of the Federal
Register, 800 North Capitol Street, NW., suite 700, Washington, DC.
(f) This amendment becomes effective on August 10, 1994.
Issued in Renton, Washington, on June 23, 1994.
S.R. Miller,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 94-15732 Filed 7-8-94; 8:45 am]
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