[Federal Register Volume 65, Number 7 (Tuesday, January 11, 2000)]
[Rules and Regulations]
[Pages 1538-1540]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 00-375]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 99-NM-80-AD; Amendment 39-11499; AD 2000-01-02]
RIN 2120-AA64
Airworthiness Directives; Raytheon Model BAe.125 Series 1000A and
1000B Airplanes and 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 all Raytheon Model BAe.125 series 1000A and 1000B
airplanes and Model Hawker 1000 series airplanes, that requires an
inspection to determine the integrity of the duct connection on both
ends of the turbine air discharge duct in the air conditioning system;
an inspection to measure the bead height on the ends of the turbine air
discharge duct; and corrective actions, if necessary. This amendment is
prompted by reports indicating that the turbine air discharge duct
disconnected from the cold air unit (CAU) or water separator due to
insufficient bead height on the ends of the turbine air discharge duct.
The actions specified by this AD are intended to prevent such
disconnection from the CAU or water separator, which could result in
cabin depressurization.
DATES: Effective February 15, 2000.
The incorporation by reference of certain publications listed in
the regulations is approved by the Director of the Federal Register as
of February 15, 2000.
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: Paul C. DeVore, 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
[[Page 1539]]
67209; telephone (316) 946-4142; 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 all Raytheon Model BAe.125 series
1000A and 1000B airplanes and Model Hawker 1000 series airplanes was
published in the Federal Register on October 14, 1999 (64 FR 55638).
That action proposed to require an inspection to determine the
integrity of the duct connection on both ends of the turbine air
discharge duct in the air conditioning system; an inspection to measure
the bead height on the ends of the turbine air discharge duct; and
corrective actions, if necessary.
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 or the FAA's determination of the cost to the public.
Conclusion
The FAA has determined that air safety and the public interest
require the adoption of the rule as proposed.
Cost Impact
There are approximately 52 airplanes of the affected design in the
worldwide fleet. The FAA estimates that 35 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 $60 per work hour. Based on these figures, the
cost impact of the AD on U.S. operators is estimated to be $18,900, or
$540 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 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. Therefore, it
is determined that this final rule does not have federalism
implications under Executive Order 13132.
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.
Sec. 39.13 [Amended]
2. Section 39.13 is amended by adding the following new
airworthiness directive:
2000-01-02 Raytheon Aircraft Company (Formerly Beech): Amendment 39-
11499. Docket 99-NM-80-AD.
Applicability: All Model BAe.125 series 1000A and 1000B
airplanes and Model Hawker 1000 series airplanes, certificated in
any category.
Note 1: This AD applies to each airplane identified in the
preceding applicability provision, regardless of whether it has been
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 (d) 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.
Compliance: Required as indicated, unless accomplished
previously.
To prevent the turbine air discharge duct in the air
conditioning system from disconnecting from the CAU or water
separator in flight, which could result in cabin depressurization,
accomplish the following:
Inspections
(a) Within 25 flight hours after the effective date of this AD,
perform a general visual inspection to determine the integrity of
the duct connections (i.e., ensure that the duct and securing clamps
are in place, the sleeve is central to the joint gap, and the clamps
are clear of the duct bead) on both ends of the turbine air
discharge duct in accordance with Raytheon Service Bulletin SB 21-
3108, dated November 1998. If any discrepancy is detected, prior to
further flight, adjust the clamps in accordance with the service
bulletin.
Note 2: For the purposes of this AD, a general visual inspection
is defined as: ``A visual examination of an interior or exterior
area, installation, or assembly to detect obvious damage, failure,
or irregularity. This level of inspection is made under normally
available lighting conditions such as daylight, hangar lighting,
flashlight, or drop-light, and may require removal or opening of
access panels or doors. Stands, ladders, or platforms may be
required to gain proximity to the area being checked.''
(b) Within 300 flight hours or 6 months after the effective date
of this AD, whichever occurs first, perform a one-time detailed
inspection to measure the bead height on the ends of the turbine air
discharge duct in accordance with Raytheon Service Bulletin SB 21-
3108, dated November 1998. If the bead height does not conform to
the dimension shown in the service bulletin, prior to further
flight, either rework the duct or replace the duct with a new duct,
in accordance with the service bulletin.
Note 3: For the purposes of this AD, a detailed inspection is
defined as: ``An intensive visual examination of a specific
structural area, system, installation, or assembly to detect damage,
failure, or irregularity. Available lighting is normally
supplemented with a direct source of good lighting at intensity
deemed appropriate by the inspector. Inspection aids such as mirror,
magnifying lenses, etc., may be used. Surface cleaning and elaborate
access procedures may be required.''
Spares
(c) As of the effective date of this AD, no person shall install
a turbine air discharge duct, part number 25-9VF425-1A, on any
airplane, unless that duct has been inspected in accordance with
Part II of Raytheon Service Bulletin SB 21-3108, dated November
1998.
Alternative Methods of Compliance
(d) 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 4: Information concerning the existence of approved
alternative methods of compliance with this AD, if any, may be
obtained from the Wichita ACO.
[[Page 1540]]
Special Flight Permits
(e) Special flight permits may be issued in accordance with
Secs. 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.
Incorporation by Reference
(f) The actions shall be done in accordance with Raytheon
Service Bulletin SB 21-3108, dated November 1998. 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.
(g) This amendment becomes effective on February 15, 2000.
Issued in Renton, Washington, on January 3, 2000.
Donald L. Riggin,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 00-375 Filed 1-10-00; 8:45 am]
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