[Federal Register Volume 62, Number 244 (Friday, December 19, 1997)]
[Rules and Regulations]
[Pages 66511-66512]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 97-32998]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 97-NM-140-AD; Amendment 39-10253; AD 97-26-10]
RIN 2120-AA64
Airworthiness Directives; Raytheon Model Hawker 1000 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 Raytheon Model Hawker 1000 series airplanes, that
requires modifying the aft core cowl nozzles of the engine nacelles.
This amendment is prompted by a report indicating that the sealant on
the core cowl nozzles may extend higher than the forward flange of the
core cowl nozzles, which could result in contact between the cowl
sealant surface and the lever of the engine mechanical over-speed
control system. The actions specified by this AD are intended to
prevent such contact, which could cause the over-speed system to
function improperly and consequent engine structural failure.
DATES: Effective January 23, 1998.
The incorporation by reference of certain publications listed in
the regulations is approved by the Director of the Federal Register as
of January 23, 1998.
ADDRESSES: The service information referenced in this AD may be
obtained from Raytheon Aircraft Company, Manager, Service Engineering,
Hawker Customer Support Department, P.O. Box 85, Wichita, Kansas 67201-
0085. 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, Small
Airplane Directorate, Wichita Aircraft Certification Office, 1801
Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas; or at
the Office of the Federal Register, 800 North Capitol Street, NW.,
suite 700, Washington, DC.
FOR FURTHER INFORMATION CONTACT: Randy Griffith, Aerospace Engineer,
Systems and Propulsion Branch, ACE-116W, FAA, Small Airplane
Directorate, Wichita Aircraft Certification Office, 1801 Airport Road,
Room 100, Mid-Continent Airport, Wichita, Kansas 67209; telephone (316)
946-4145; fax (316) 946-4407.
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 Raytheon Model Hawker 1000
series airplanes was published in the Federal Register on October 1,
1997 (62 FR 51385). That action proposed to require modifying the aft
core cowl nozzles of the engine nacelles.
Comments
Interested persons have been afforded an opportunity to participate
in the making of this amendment. No comments were submitted in response
to the proposal.
Change to Cost Impact Information
The FAA has determined that 48 airplanes, rather than 14 airplanes
(as stated in the cost impact paragraph of the proposal), will be
affected by this AD. The FAA has revised the cost impact information,
below, to reflect this change.
Conclusion
After careful review of the available data, the FAA has determined
that air safety and the public interest require the adoption of the
rule with the change previously described. The FAA has determined that
this change will neither significantly increase the economic burden on
any operator nor increase the scope of the AD.
Cost Impact
There are approximately 52 Model Hawker 1000 series airplanes of
the affected design in the worldwide fleet. The FAA estimates that 48
airplanes of U.S. registry will be affected by this AD, that it will
take approximately 4 work hours per airplane to accomplish the required
actions, and that the average labor rate is $60 per work hour. Required
parts will be provided by the manufacturer at no cost to operators.
Based on these figures, the cost impact of the AD on U.S. operators is
estimated to be $11,520, or $240 per airplane.
The 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.
Regulatory Impact
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. 106(g), 40113, 44701.
[[Page 66512]]
Sec. 39.13 [Amended]
2. Section 39.13 is amended by adding the following new
airworthiness directive:
97-26-10 Raytheon Aircraft Company (Formerly Raytheon Aircraft
Corporation; Beech Aircraft Corporation; Raytheon Corporate Jets,
Inc.; British Aerospace, PLC; deHavilland; Hawker Siddeley):
Amendment 39-10253. Docket 97-NM-140-AD.
Applicability: Model Hawker 1000 series airplanes; serial
numbers 258151, 258159, and 259003 through 259052 inclusive;
certificated in any category.
Note 1: This AD applies to each airplane identified in the
preceding applicability provision, regardless of whether it has been
otherwise modified, altered, or repaired in the area subject to the
requirements of this AD. For airplanes that have been modified,
altered, or repaired so that the performance of the requirements of
this AD is affected, the owner/operator must request approval for an
alternative method of compliance in accordance with paragraph (b) of
this AD. The request should include an assessment of the effect of
the modification, alteration, or repair on the unsafe condition
addressed by this AD; and, if the unsafe condition has not been
eliminated, the request should include specific proposed actions to
address it.
To prevent contact between the cowl sealant surface and the
lever of the engine mechanical over-speed control system, which
could cause the over-speed system to function improperly and
consequent engine structural failure; accomplish the following:
(a) Within 150 flight hours or 3 months after the effective date
of this AD, whichever occurs first, modify the aft core cowl nozzles
of the left- and right-hand engine nacelles in accordance with
Raytheon Service Bulletin SB.71-48-25F021B, dated May 20, 1997.
Note 2: The Raytheon service bulletin references Nordam Hawker
1000 Service Bulletin PW300 71-9, dated April 29, 1995, as the
appropriate source of service information for accomplishment of the
modification.
(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, Wichita Aircraft Certification
Office (ACO), FAA, Small Airplane Directorate. Operators shall
submit their requests through an appropriate FAA Principal
Maintenance Inspector, who may add comments and then send it to the
Manager, Wichita ACO.
Note 3: Information concerning the existence of approved
alternative methods of compliance with this AD, if any, may be
obtained from the Wichita ACO.
(c) 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.
(d) The modification shall be done in accordance with Raytheon
Service Bulletin SB.71-48-25F021B, dated May 20, 1997. 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 Raytheon Aircraft Company, Manager,
Service Engineering, Hawker Customer Support Department, P.O. Box
85, Wichita, Kansas 67201-0085. Copies may be inspected at the FAA,
Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton,
Washington; or at the FAA, Small Airplane Directorate, Wichita
Aircraft Certification Office, 1801 Airport Road, Room 100, Mid-
Continent Airport, Wichita, Kansas; or at the Office of the Federal
Register, 800 North Capitol Street, NW., suite 700, Washington, DC.
(e) This amendment becomes effective on January 23, 1998.
Issued in Renton, Washington, on December 11, 1997.
Gilbert L. Thompson,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 97-32998 Filed 12-18-97; 8:45 am]
BILLING CODE 4910-13-U
