Airworthiness Directives; Raytheon Model BAe.125 Series 800A (C-29A and U-125 Military), 1000A, and 1000B Airplanes; Hawker 800 (U-125A Military) Airplanes; and Hawker 800XP and 1000 Series Airplanes

[Federal Register Volume 66, Number 124 (Wednesday, June 27, 2001)]
[Rules and Regulations]
[Pages 34096-34098]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 01-15932]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 2000-NM-212-AD; Amendment 39-12285; AD 2001-13-05]
RIN 2120-AA64


Airworthiness Directives; Raytheon Model BAe.125 Series 800A (C-
29A and U-125 Military), 1000A, and 1000B Airplanes; Hawker 800 (U-125A 
Military) Airplanes; and Hawker 800XP and 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 BAe.125 series 800A (C-29A and U-
125 military), 1000A, and 1000B airplanes; Hawker 800 (U-125A military) 
airplanes; and Hawker 800XP and 1000 series airplanes, that requires 
removal of existing clamps, bedding tapes, and rubber connecting 
sleeves at the ends of the turbine air discharge duct and the water 
separator, and replacement of the clamps and rubber connecting sleeves 
with new, improved components. This AD also requires, for certain 
airplanes, removal of aluminum bedding strips that are installed under 
the existing clamps. The actions specified by this AD are intended to 
prevent the turbine air discharge duct or water separator outlet duct 
from disconnecting from the cold air unit turbine or from the water 
separator, resulting in the loss of air supply to maintain adequate 
cabin pressure. Loss of adequate cabin pressure at high altitude would 
require emergency procedures, such as use of oxygen, auxiliary 
pressurization, or emergency descent.

DATES: Effective August 1, 2001.
    The incorporation by reference of certain publications listed in 
the regulations is approved by the Director of the Federal Register as 
of August 1, 2001.

ADDRESSES: The service information referenced in this AD may be 
obtained from Raytheon Aircraft Company, Department 62, 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, 
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, Wichita Aircraft 
Certification Office, 1801 Airport Road, Room 100, Mid-Continent 
Airport, Wichita, Kansas 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 certain Raytheon Model BAe.125 
series 800A (C-29A and U-125 military), 1000A, and 1000B airplanes; 
Hawker 800 (U-125A military) airplanes; and Hawker 800XP and 1000 
series airplanes was published as a supplemental notice of proposed 
rulemaking (NPRM) in the Federal Register on February 14, 2001 (66 FR

[[Page 34097]]

10236). That action proposed to require removal of existing clamps, 
bedding tapes, and rubber connecting sleeves at the ends of the turbine 
air discharge duct and the water separator, and replacement of the 
clamps and rubber connecting sleeves with new, improved components. 
That action also proposed to include additional airplanes in the 
applicability and to require, for certain airplanes, removal of 
aluminum bedding strips that are installed under the existing clamps.

Comments

    Interested persons have been afforded an opportunity to participate 
in the making of this amendment. No comments were submitted.

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 270 Model BAe.125 series 800A (C-29A and U-
125 military), 1000A, and 1000B airplanes; Hawker 800 (U-125A military) 
airplanes; and Hawker 800XP and 1000 series airplanes of the affected 
design in the worldwide fleet.
    The FAA estimates that 154 airplanes of U.S. registry will be 
affected by paragraph (a) of this AD. We estimate that the actions 
required by paragraph (a) of this AD will take approximately 8 work 
hours per airplane to accomplish, and that the average labor rate is 
$60 per work hour. Required parts will cost approximately $492 per 
airplane. Based on these figures, the cost impact of this AD on U.S. 
operators is estimated to be $149,688, or $972 per airplane.
    The FAA estimates that an additional 36 airplanes of U.S. registry 
will be affected by paragraph (b) of this AD. We estimate that the 
actions required by paragraph (b) of this AD will take approximately 2 
work hours per airplane to accomplish, and that the average labor rate 
is $60 per work hour. There is no cost for required parts. Based on 
these figures, the cost impact of paragraph (b) of this AD on U.S. 
operators is estimated to be $4,320, or $120 per airplane.
    The cost impact figures discussed above are based on assumptions 
that no operator has yet accomplished any of the proposed requirements 
of this AD action, and that no operator would accomplish those actions 
in the future if this AD were not adopted. The cost impact figures 
discussed in AD rulemaking actions represent only the time necessary to 
perform the specific actions actually required by the AD. These figures 
typically do not include incidental costs, such as the time required to 
gain access and close up, planning time, or time necessitated by other 
administrative actions.

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:

2001-13-05  Raytheon Aircraft Company: Amendment 39-12285. Docket 
2000-NM-212-AD.

    Applicability: Model BAe.125 series 800A (C-29A and U-125 
military), 1000A, and 1000B airplanes; Hawker 800 (U-125A military) 
airplanes, up to and including serial number 258406; and Hawker 
800XP series airplanes, up to and including serial number 258483, 
and 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 or water separator 
outlet duct from disconnecting from the cold air unit turbine or 
from the water separator, resulting in the loss of air supply to 
maintain adequate cabin pressure, accomplish the following:

Replacement

    (a) For Model BAe.125 series 800A (C-29A and U-125 military) 
series airplanes; Hawker 800 (U-125A military) airplanes up to and 
including serial number 258406; and Hawker 800XP series airplanes up 
to and including serial number 258459: Remove the clamps, bedding 
tapes, and rubber connecting sleeves at the ends of the air turbine 
discharge duct and the water separator, and replace the clamps and 
rubber connecting sleeves with new, improved components, in 
accordance with the Accomplishment Instructions of Raytheon Service 
Bulletin SB 21-3377, Revision 1, dated July 2000, at the earliest of 
the times specified in paragraphs (a)(1), (a)(2), and (a)(3) of this 
AD.
    (1) Prior to any extended over-water operation.
    (2) Within the next 300 hours time-in-service after the 
effective date of this AD.
    (3) Within the next six months after the effective date of this 
AD.

    Note 2: An extended over-water operation is defined in 14 CFR 
1.1 as ``* * * an operation over water at a horizontal distance of 
more than 50 nautical miles from the nearest shoreline * * *.''

    (b) For Model Hawker 800XP series airplanes having serial 
numbers 258460 through 258483; Model BAe.125 series 1000A/1000B 
airplanes; and Hawker 1000 series airplanes: Remove the aluminum 
bedding strips from the air conditioning duct sleeves attached to 
both ends of the turbine air discharge duct and at the outlet end of 
the water separator, in accordance with the Accomplishment 
Instructions of Raytheon Service Bulletin SB 21-3414, Revision 1, 
dated July 2000, at the earliest of the times specified in 
paragraphs (b)(1), (b)(2), and (b)(3) of this AD.
    (1) Prior to any extended over-water operation.
    (2) Within the next 300 hours time-in-service after the 
effective date of this AD.
    (3) Within the next six months after the effective date of this 
AD.

[[Page 34098]]

Actions Accomplished Previously and Terminating Actions

    (c) For certain airplanes, actions described in the original 
issuance of Raytheon Service Bulletin SB 21-3377 may have been 
accomplished prior to the effective date of this AD. On those 
airplanes, those actions are not required to be repeated, as allowed 
by the phrase, ``unless accomplished previously.'' However, any 
action described in Raytheon Service Bulletin SB 21-3377, Revision 
1, dated July 2000; or Raytheon Service Bulletin SB 21-3414, 
Revision 1, dated July 2000, that has not been accomplished on those 
airplanes must be accomplished in accordance with this AD. 
Accomplishment of the actions specified in both Raytheon Service 
Bulletin SB 21-3377, Revision 1, dated July 2000; and Raytheon 
Service Bulletin SB 21-3414, Revision 1, dated July 2000, is 
considered to be terminating action for the requirements of this AD.

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. 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.

Special Flight Permits

    (e) 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.

Incorporation by Reference

    (f) The actions shall be done in accordance with Raytheon 
Service Bulletin SB 21-3377, Revision 1, dated July 2000; and 
Raytheon Service Bulletin SB 21-3414, Revision 1, dated July 2000. 
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, 
Department 62, 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, 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.

Effective Date

    (g) This amendment becomes effective on August 1, 2001.

    Issued in Renton, Washington, on June 19, 2001.
Kalene C. Yanamura,
Acting Manager,, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 01-15932 Filed 6-26-01; 8:45 am]
BILLING CODE 4910-13-P

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