[Federal Register Volume 62, Number 202 (Monday, October 20, 1997)]
[Rules and Regulations]
[Pages 54368-54369]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 97-27223]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 96-NM-274-AD; Amendment 39-10158; AD 97-21-05]
RIN 2120-AA64
Airworthiness Directives; Raytheon Model DH.125-400A; BH.125-400A
and -600A; HS.125-600A and -700A; BAe 125-800A Series Airplanes; and
Hawker 800 and Hawker 800 XP Series Airplanes Including Military
Variants
AGENCY: Federal Aviation Administration, DOT.
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: This amendment adopts a new airworthiness directive (AD),
applicable to certain Raytheon Model DH.125-400A; BH.125-400A and -
600A; HS.125-600A and -700A; BAe 125-800A series airplanes; and Hawker
800 and Hawker 800 XP series airplanes (including military variants
C29A, U125, U125A). This amendment requires a one-time inspection to
determine if certain high pressure oxygen hose assemblies are
installed, and, if installed, replacement of those hose assemblies with
new, improved hose assemblies. This amendment is prompted by a report
that certain high pressure oxygen hose assemblies are susceptible to
leakage due to those hose assemblies not meeting design specifications
during manufacturing. The actions specified by this AD are intended to
prevent leaks in high pressure oxygen hose assemblies, which, if not
detected and corrected, could result in insufficient oxygen available
to the passengers or crew if the cabin pressure altitude should rise to
a level requiring emergency oxygen.
DATES: Effective November 24, 1997.
The incorporation by reference of certain publications listed in
the regulations is approved by the Director of the Federal Register as
of November 24, 1997.
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: Michael Imbler, Aerospace Engineer,
Systems and Propulsion Branch, ACE-115W, FAA, Small Airplane
Directorate, Wichita Aircraft Certification Office, 1801 Airport Road,
Room 100, Mid-Continent Airport, Wichita, Kansas 67209; telephone (316)
946-4147; 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 DH.125-
400A; BH.125-400A and -600A; HS.125-600A and -700A; BAe 125-800A series
airplanes; and Hawker 800 and Hawker 800 XP series airplanes (including
military variants C29A, U125, U125A), was published in the Federal
Register on July 24, 1997 (62 FR 39787). That action proposed to
require a one-time inspection to determine if certain high pressure
oxygen hose assemblies are installed, and, if installed, replacement of
those hose assemblies with new, improved hose assemblies.
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
The FAA estimates that 404 Raytheon Model DH.125-400A; BH.125-400A
and -600A; HS.125-600A and -700A; BAe 125-800A; and Hawker 800 and
Hawker 800 XP series airplanes (including military variants) of U.S.
registry will be affected by this AD.
It will take approximately 1 work hour per airplane to accomplish
the required actions, at an average labor rate of $60 per work hour.
Based on these figures, the cost impact of the initial inspection
required by this AD on U.S. operators is estimated to be $24,240, or
$60 per airplane.
Should an operator be required to accomplish the replacement, it
would take approximately 1 work hour per airplane to accomplish it, at
an average labor rate of $60 per work hour. Required parts would be
supplied by the manufacturer at no cost to the operators. Based on
these figures, the cost impact of the replacement on U.S. operators is
estimated to be $60 per airplane.
[[Page 54369]]
The cost impact figures discussed above are 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.
Sec. 39.13 [Amended]
2. Section 39.13 is amended by adding the following new
airworthiness directive:
97-21-05 Raytheon Aircraft Company (Formerly Beech, Raytheon
Corporate Jets, British Aerospace, Hawker Siddeley, et al.):
Amendment 39-10158. Docket 96-NM-274-AD.
Applicability: All Model DH.125-400A, BH.125-400A and -600A,
HS.125-600A and -700A, and BAe 125-800A series airplanes; and Model
Hawker 800 and Hawker 800 XP series airplanes (including Military
Variants C29A, U125, and U125A airplanes); having serial numbers 1
through 258294 inclusive; on which Modification 252036 has been
installed with a high pressure oxygen hose assembly having part
number WKA 34609; 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 (c) 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.
Note 2: Raytheon (Beech) Model DH.125-400B, BH.125-400B and -
600B, HS. 125-600B and -700B, and BAe 125-800B series airplanes are
similar in design to the airplanes that are subject to the
requirements of this AD, and therefore, also may be subject to the
unsafe condition addressed by this AD. However, as of the effective
date of this AD, those models are not type certificated for
operation in the United States. Airworthiness authorities of
countries in which those models are approved for operation should
consider adopting corrective action, applicable to these models,
that is similar to the corrective action required by this AD.
Compliance: Required as indicated, unless accomplished
previously.
To prevent leaks in high pressure oxygen hose assemblies, which
could result in insufficient oxygen quantity available to the
passengers or crew if the cabin pressure altitude should rise to a
level requiring emergency oxygen, accomplish the following:
(a) Within 90 days after the effective date of this AD, perform
a one-time inspection to determine whether any high pressure oxygen
hose assembly having a discrepant part number WKA 34609 is
installed, in accordance with Raytheon Service Bulletin SB.35-46,
dated September 30, 1996. If no discrepant part number is detected,
no further action is required by this AD. If any hose assembly
having discrepant part number WKA 34609 is installed, prior to
further flight, replace the hose assembly with a hose assembly
having part number 58179-101, in accordance with the service
bulletin.
(b) As of the effective date of this AD, no person shall install
a high pressure oxygen hose having part number WKA 34609 on any
airplane.
(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, 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.
(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 actions shall be done in accordance with Raytheon
Service Bulletin SB.35-46, dated September 30, 1996. 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.
(f) This amendment becomes effective on November 24, 1997.
Issued in Renton, Washington, on October 8, 1997.
James V. Devany,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 97-27223 Filed 10-17-97; 8:45 am]
BILLING CODE 4910-13-U
