[Federal Register Volume 61, Number 66 (Thursday, April 4, 1996)]
[Rules and Regulations]
[Pages 14959-14961]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 96-7960]



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[[Page 14960]]


DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 95-NM-141-AD Amendment 39-9560; AD 96-07-11]


Airworthiness Directives; Beech Model BAe 125-1000A and 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 Beech Model BAe 125-1000A and Hawker 1000 series 
airplanes, that requires a detailed visual inspection to detect chafing 
damage to the hydraulic pipes adjacent to the hydraulic module, and 
various follow-on actions. This amendment is prompted by reports of 
chafing damage between hydraulic pipes at three locations in the rear 
equipment bay adjacent to the hydraulic module. The actions specified 
by this AD are intended to prevent such chafing damage to the hydraulic 
pipe and subsequent hydraulic fluid leakage, which could lead to 
failure of essential airplane systems.

DATES: Effective May 6, 1996.
    The incorporation by reference of certain publications listed in 
the regulations is approved by the Director of the Federal Register as 
of May 6, 1996.

ADDRESSES: The service information referenced in this AD may be 
obtained from Beech Aircraft Corporation, 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 Office of the 
Federal Register, 800 North Capitol Street, NW., suite 700, Washington, 
DC.

FOR FURTHER INFORMATION CONTACT: Tim Backman, Aerospace Engineer, 
Standardization Branch, ANM-113, FAA, Transport Airplane Directorate, 
1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (206) 
227-2797; fax (206) 227-1149.

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 Beech Model BAe 125-1000A and 
Hawker 1000 series airplanes was published in the Federal Register on 
December 19, 1995 (60 FR 65254). That action proposed to require a 
detailed visual inspection to detect chafing damage to the hydraulic 
pipes located aft of frame 21 and adjacent to the hydraulic module, and 
various follow-on actions (i.e., visual inspection, adjustment, 
replacement, pressure test).
    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. 
The FAA has determined that air safety and the public interest require 
the adoption of the rule as proposed.
    The FAA estimates that 27 airplanes of U.S. registry will be 
affected by this AD, that it will take approximately 1 work hour 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 $1,620, or $60 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.
    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 USC 106(g), 40113, 44701.


Sec. 39.13  [Amended]

    2. Section 39.13 is amended by adding the following new 
airworthiness directive:

96-07-11  Beech Aircraft Corporation (Raytheon Aircraft Company) 
(Formerly DeHavilland; Hawker Siddeley; British Aerospace, plc; 
Raytheon Corporate Jets, Inc.): Amendment 39-9560. Docket 95-NM-141-
AD.

    Applicability: All Model BAe 125-1000A and 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 (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.

    Compliance: Required as indicated, unless accomplished 
previously.
    To prevent chafing damage to the hydraulic pipe and subsequent 
hydraulic fluid leakage; this condition may lead to failure of 
essential airplane systems, accomplish the following:
    (a) Within 3 months after the effective date of this AD, perform 
a detailed visual inspection to detect chafing damage to the 
hydraulic pipes located aft of frame 21 and adjacent to the 
hydraulic module, in accordance with Hawker Service Bulletin SB.29-
95, dated March 24, 1995.
    (1) If no chafing damage is detected, prior to further flight, 
perform a visual inspection to determine if adequate clearance 
exists between the intersecting pipe runs, and between pipes and 
adjacent equipment or structure, in accordance with the service 
bulletin.
    (i) If the clearance is adequate, no further action is required 
by this AD.
    (ii) If the clearance is inadequate, prior to further flight, 
adjust the pipe connections and/or clipping to restore adequate 
clearance, in accordance with the service bulletin.
    (iii) If any chafing damage to other equipment or structure is 
found, prior to

[[Page 14961]]
further flight, repair it in accordance with a method approved by 
the Manager, Standardization Branch, ANM-113, FAA, Transport 
Airplane Directorate.
    (2) If any chafing damage is detected and it is beyond the 
limits specified in paragraph 2.B.(4) of the service bulletin, prior 
to further flight, replace the damaged pipe with a new pipe in 
accordance with the service bulletin.
    (3) If any chafing damage is detected within the limits 
specified in paragraph 2.B.(4) of the service bulletin, prior to 
further flight, perform a pressure test or replace the damaged pipe 
with a new pipe in accordance with the service bulletin.
    (i) If the pipes are satisfactory, no further action is required 
by this AD.
    (ii) If any pipe leaks and/or if any distortion occurs in or 
around the area of chafing damage, prior to further flight, replace 
the pipe with a new pipe in accordance with the service bulletin.
    (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, 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 2: Information concerning the existence of approved 
alternative methods of compliance with this AD, if any, may be 
obtained from the Standardization Branch, ANM-113.

    (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 actions shall be done in accordance with Hawker Service 
Bulletin SB.29-95, dated March 24, 1995. 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 Beech Aircraft Corporation, 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 Office of the Federal Register, 800 North 
Capitol Street, NW., suite 700, Washington, DC.
    (e) This amendment becomes effective on May 6, 1996.

    Issued in Renton, Washington, on March 27, 1996.
Darrell M. Pederson,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 96-7960 Filed 4-3-96; 8:45 am]
BILLING CODE 4910-13-U