[Federal Register Volume 59, Number 145 (Friday, July 29, 1994)]
[Unknown Section]
[Page 0]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 94-18285]


[[Page Unknown]]

[Federal Register: July 29, 1994]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 94-NM-103-AD; Amendment 39-8986; AD 94-15-15]

 

Airworthiness Directives; Raytheon Corporate Jets Model BAe 125-
1000A and Hawker 1000 Series Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Final rule; request for comments.

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SUMMARY: This amendment adopts a new airworthiness directive (AD) that 
is applicable to certain Raytheon Corporate Jets Model BAe 125-1000A 
and Hawker 1000 series airplanes. This action requires an inspection to 
detect damage and to determine the clearance between the hydraulic 
pipes, adjacent pipes/components, and electrical looms/cables; and 
repair or replacement, if necessary. This amendment is prompted by 
reports of chafing of an electrical loom/cable on a hydraulic pipe and 
of chafing between a hydraulic pipe and an adjacent pipe. The actions 
specified in this AD are intended to prevent loss of hydraulic 
pressure, electrical malfunction, or an in-flight fire due to abrasion 
of electrical loom/cable insulation, eventual electrical shorting of 
the cable, and subsequent burning of a pinhole in a pipe.

DATES: Effective August 15, 1994.
    The incorporation by reference of certain publications listed in 
the regulations is approved by the Director of the Federal Register as 
of August 15, 1994.
    Comments for inclusion in the Rules Docket must be received on or 
before September 27, 1994.

ADDRESSES: Submit comments in triplicate to the Federal Aviation 
Administration (FAA), Transport Airplane Directorate, ANM-103, 
Attention: Rules Docket No. 94-NM-103-AD, 1601 Lind Avenue, SW., 
Renton, Washington 98055-4056.
    The service information referenced in this AD may be obtained from 
Raytheon Corporate Jets Inc., 3 Bishops Square, St. Albans Road West, 
Hatfield, Hertfordshire, AL109NE, United Kingdom. This information may 
be examined at the FAA, Transport Airplane Directorate, 1601 Lind 
Avenue, SW., Renton, Washington; or at the Office of the Federal 
Register, 800 North Capitol Street, NW., suite 700, Washington, DC.

FOR FURTHER INFORMATION CONTACT: William Schroeder, Aerospace Engineer, 
Standardization Branch, ANM-113, FAA, Transport Airplane Directorate, 
1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (206) 
227-2148; fax (206) 227-1320.

SUPPLEMENTARY INFORMATION: The Civil Aviation Authority (CAA), which is 
the airworthiness authority for the United Kingdom, recently notified 
the FAA that an unsafe condition may exist on certain Raytheon 
Corporate Jets Model BAe 125-1000A and Hawker 1000 series airplanes. 
The CAA advises that it has received reports of chafing of an 
electrical loom/cable on a hydraulic pipe, which caused abrasion of the 
electrical loom/cable insulation, eventual electrical shorting of the 
cable, and subsequent burning of a pinhole in a pipe. The CAA also 
received a report of chafing between a hydraulic pipe and an adjacent 
pipe. A short in an AC cable combined with hydraulic fluid spray from a 
pinhole in a hydraulic pipe could result in disruption of the 
electrical system and a possible fire. These conditions, if not 
corrected, could result in loss of hydraulic pressure, electrical 
malfunction, or an in-flight fire.
    Raytheon Corporate Jets, Inc., has issued Alert Service Bulletin SB 
A29-92, dated May 19, 1994, which describes procedures for a one-time 
detailed visual inspection to detect damage and to determine the 
clearance between the hydraulic pipes, adjacent pipes/components, and 
electrical looms/cables; replacement of any damaged part with a new 
part; and adjustment of looms/cables, pipe connections, and/or clamps, 
if necessary. The CAA classified this alert service bulletin as 
mandatory in order to assure the continued airworthiness of these 
airplanes in the United Kingdom.
    This airplane model is manufactured in the United Kingdom and is 
type certificated for operation in the United States under the 
provisions of Sec. 21.29 of the Federal Aviation Regulations (14 CFR 
21.29) and the applicable bilateral airworthiness agreement. Pursuant 
to this bilateral airworthiness agreement, the CAA has kept the FAA 
informed of the situation described above. The FAA has examined the 
findings of the CAA, reviewed all available information, and determined 
that AD action is necessary for products of this type design that are 
certificated for operation in the United States.
    Since an unsafe condition has been identified that is likely to 
exist or develop on other airplanes of the same type design registered 
in the United States, this AD is being issued to prevent loss of 
hydraulic pressure, electrical malfunction, or an in-flight fire. This 
AD requires a one-time detailed visual inspection to detect damage and 
to determine the clearance between the hydraulic pipes, adjacent pipes/
components, and electrical looms/cables; repair or replacement of any 
damaged part with a new or serviceable part; and adjustment of looms/
cables, pipe connections, and/or clamps, if necessary. Repair of any 
damaged part is required to be accomplished in accordance with a method 
approved by the FAA. All other actions are required to be accomplished 
in accordance with the alert service bulletin described previously.
    Since a situation exists that requires the immediate adoption of 
this regulation, it is found that notice and opportunity for prior 
public comment hereon are impracticable, and that good cause exists for 
making this amendment effective in less than 30 days.

Comments Invited

    Although this action is in the form of a final rule that involves 
requirements affecting flight safety and, thus, was not preceded by 
notice and an opportunity for public comment, comments are invited on 
this rule. Interested persons are invited to comment on this rule by 
submitting such written data, views, or arguments as they may desire. 
Communications shall identify the Rules Docket number and be submitted 
in triplicate to the address specified under the caption ADDRESSES. All 
communications received on or before the closing date for comments will 
be considered, and this rule may be amended in light of the comments 
received. Factual information that supports the commenter's ideas and 
suggestions is extremely helpful in evaluating the effectiveness of the 
AD action and determining whether additional rulemaking action would be 
needed.
    Comments are specifically invited on the overall regulatory, 
economic, environmental, and energy aspects of the rule that might 
suggest a need to modify the rule. All comments submitted will be 
available, both before and after the closing date for comments, in the 
Rules Docket for examination by interested persons. A report that 
summarizes each FAA-public contact concerned with the substance of this 
AD will be filed in the Rules Docket.
    Commenters wishing the FAA to acknowledge receipt of their comments 
submitted in response to this rule must submit a self-addressed, 
stamped postcard on which the following statement is made: ``Comments 
to Docket Number 94-NM-103-AD.'' The postcard will be date stamped and 
returned to the commenter.
    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.
    The FAA has determined that this regulation is an emergency 
regulation that must be issued immediately to correct an unsafe 
condition in aircraft, and that it is not a ``significant regulatory 
action'' under Executive Order 12866. It has been determined further 
that this action involves an emergency regulation under DOT Regulatory 
Policies and Procedures (44 FR 11034, February 26, 1979). If it is 
determined that this emergency regulation otherwise would be 
significant under DOT Regulatory Policies and Procedures, a final 
regulatory evaluation will be prepared and placed in the Rules Docket. 
A copy of it, if filed, 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. 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:

94-15-15 Raytheon Corporate Jets, Inc. (Formerly British Aerospace, 
PLC): Amendment 39-8986. Docket 94-NM-103-AD.

    Applicability: Model BAe 125-1000A and Hawker 1000 series 
airplanes; as listed in Raytheon Corporate Jets Alert Service 
Bulletin SB A29-92, dated May 19, 1994; certificated in any 
category.
    Compliance: Required as indicated, unless accomplished 
previously.

    To prevent loss of hydraulic pressure, electrical malfunction, 
or an in-flight fire, accomplish the following:
    (a) Within 28 days after the effective date of this AD, perform 
a detailed visual inspection to detect any damage and to determine 
the clearance between the hydraulic pipes, adjacent pipes/
components, and electrical looms/cables, as specified in Raytheon 
Corporate Jets Alert Service Bulletin A29-92, dated May 19, 1994. 
Perform this inspection in accordance with the procedures described 
in the alert service bulletin.
    (b) If any damage is found, prior to further flight, accomplish 
either paragraph (b)(1) or (b)(2) of this AD.
    (1) Replace the damaged part with a new or serviceable part in 
accordance with Raytheon Corporate Jets Alert Service Bulletin A29-
92, dated May 19, 1994. Or
    (2) Repair the damaged part in accordance a method approved by 
the Manager, Standardization Branch, ANM-113, FAA, Transport 
Airplane Directorate.
    (c) If the clearance between the hydraulic pipes, adjacent 
pipes/components, and electrical looms/cables is less than 0.5 inch 
(13 mm), prior to further flight, repair in accordance with Raytheon 
Corporate Jets Alert Service Bulletin SB A29-92, dated May 19, 1994.
    (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, Standardization Branch, ANM-113, 
FAA, Transport 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, 
Standardization Branch, ANM-113.

    Note: Information concerning the existence of approved 
alternative methods of compliance with this AD, if any, may be 
obtained from the Standardization Branch, ANM-113.

    (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.
    (f) The actions shall be done in accordance with Raytheon 
Corporate Jets Alert Service Bulletin SB A29-92, dated May 19, 1994. 
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 Corporate Jets Inc., 3 
Bishops Square, St. Albans Road West, Hatfield, Hertfordshire, 
AL109NE, United Kingdom. Copies may be inspected at the FAA, 
Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, 
Washington; or at the Office of the Federal Register, 800 North 
Capitol Street, NW., suite 700, Washington, DC.
    (g) This amendment becomes effective on August 15, 1994.

    Issued in Renton, Washington, on July 21, 1994.
Darrell M. Pederson,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 94-18285 Filed 7-28-94; 8:45 am]
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