[Federal Register Volume 59, Number 21 (Tuesday, February 1, 1994)]
[Unknown Section]
[Page 0]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 94-453]
[[Page Unknown]]
[Federal Register: February 1, 1994]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 93-NM-116-AD; Amendment 39-8795; AD 94-01-13]
Airworthiness Directives; de Havilland Model DHC-8-300 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 de Havilland Model DHC-8-300 series airplanes,
that requires modifying the airplane fire detection system and revising
the Airplane Flight Manual (AFM) to include procedures related to
operating the system. This amendment is prompted by reports of several
oil fires in the inter compressor case (ICC) assembly. The actions
specified by this AD are intended to prevent severe structural damage
to the airplane due to an internal engine fire within the ICC.
DATES: Effective March 3, 1994.
The incorporation by reference of certain publications listed in
the regulations is approved by the Director of the Federal Register as
of March 3, 1994.
ADDRESSES: The service information referenced in this AD may be
obtained from de Havilland, Inc., Garratt Boulevard, Downsview, Ontario
M3K 1Y5, 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: Richard Fiesel, Aerospace Engineer,
Propulsion Branch, ANE-174, FAA, Engine and Propeller Directorate, New
York Aircraft Certification Office, 181 South Franklin Avenue, room
202, Valley Stream, New York 11582; telephone (516) 791-7422; fax (516)
791-9024.
SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal
Aviation Regulations to include an airworthiness directive (AD) that is
applicable to certain de Havilland Model DHC-8-300 series airplanes was
published in the Federal Register on September 29, 1993 (58 FR 50868).
That action proposed to require the installation of an inter compressor
case (ICC) fire detection system, connection of the ICC fire detection
system to the airplane fire detection system, and a revision to the AFM
to provide the flight crew with operating procedures associated with
the ICC fire detection system.
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 19 airplanes of U.S. registry will be
affected by this AD, that it will take approximately 9 work hours per
airplane to accomplish the required actions, and that the average labor
rate is $55 per work hour. Required parts will cost approximately $985
per airplane. Based on these figures, the total cost impact of the AD
on U.S. operators is estimated to be $28,120, or $1,480 per airplane.
This total cost figure assumes that no operator has yet accomplished
the requirements of this AD.
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 14 CFR part
39 of the Federal Aviation Regulations 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:
94-01-13 De Havilland, Inc.: Amendment 39-8795. Docket 93-NM-116-AD.
Applicability: Model DHC-8-301, -311, and -314 series airplanes,
serial numbers 100 through 332 inclusive; certificated in any
category.
Compliance: Required as indicated, unless accomplished
previously.
To prevent severe structural damage to the airplane due to an
internal engine fire within the inter compressor case, accomplish
the following:
(a) Within 90 days after the effective date of this AD,
accomplish paragraphs (a)(1), (a)(2), and (a)(3) of this AD:
(1) Install an inter compressor case (ICC) fire detection system
in accordance with de Havilland Service Bulletin S.B. 8-26-14, dated
March 6, 1992.
(2) Connect the ICC fire detection system to the airplane fire
detection system in accordance with de Havilland Service Bulletin
S.B. 8-26-14, dated March 6, 1992.
(3) Revise Section 4, ``Abnormal Procedures'', Page 4-10-1, of
the FAA-approved Airplane Flight Manual (AFM), by adding the
following steps immediately after step 1 of paragraph 4-10, ``Engine
Fire Detection System Failures''. This may be accomplished by
inserting a copy of this AD in the AFM.
``For aircraft incorporating de Havilland Modification 8/1835
2. FAULT A advisory light illuminates--Land as soon as
practicable.''
(b) 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: Information concerning the existence of approved
alternative methods of compliance with this AD, if any, may be
obtained from the New York ACO.
(c) Special flight permits may be issued in accordance with FAR
21.197 and 21.199 to operate the airplane to a location where the
requirements of this AD can be accomplished.
(d) The installation and connection shall be done in accordance
with de Havilland Service Bulletin S.B. 8-26-14, dated March 6,
1992. 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 de Havilland, Inc., Garratt
Boulevard, Downsview, Ontario M3K 1Y5, Canada. Copies may be
inspected at the FAA, Transport Airplane Directorate, 1601 Lind
Avenue, SW., Renton, Washington; or at 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.
(e) This amendment becomes effective on March 3, 1994.
Issued in Renton, Washington, on January 4, 1994.
Darrell M. Pederson,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 94-453 Filed 1-31-94; 8:45 am]
BILLING CODE 4910-13-U
