[Federal Register Volume 61, Number 162 (Tuesday, August 20, 1996)]
[Rules and Regulations]
[Pages 42994-42996]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 96-21009]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 96-NM-54-AD; Amendment 39-9718; AD 96-17-09]
RIN 2120-AA64


Airworthiness Directives; Beech (Raytheon) Model Hawker 1000 and 
BAe 125-1000A Series Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Final rule.

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SUMMARY: This amendment supersedes an existing airworthiness directive 
(AD), applicable to certain Beech (Raytheon) Model Hawker 1000 and BAe 
125-1000A series airplanes, that currently requires inspections to 
detect various discrepancies of the fuel hose assemblies on the 
auxiliary power unit (APU), and correction of any discrepancy found. 
That AD was prompted by several reports of heat damage to the fuel hose 
assembly on the APU. This amendment adds a requirement to replace the 
existing conduit of the fuel feed hose with new

[[Page 42995]]

improved conduit, which will terminate the repetitive inspections. The 
actions specified by this AD are intended to prevent failure of a fuel 
hose due to heat damage caused by incorrect routing or bleed air 
leakage; such failure could result in a malfunction of the APU, a fuel 
fire in the fuselage rear equipment bay, and reduced structural 
integrity of the surrounding structure.

DATES: Effective September 24, 1996.
    The incorporation by reference of Beech (Raytheon/Hawker) Service 
Bulletin SB.49-47-25A825A, dated August 1, 1995, listed in the 
regulations is approved by the Director of the Federal Register as of 
September 24, 1996.
    The incorporation by reference of Raytheon Service Bulletin SB 49-
44, dated January 20, 1995, listed in the regulations was approved 
previously by the Director of the Federal Register as of May 23, 1995 
(60 FR 22501, May 8, 1995).

ADDRESSES: The service information referenced in this AD may be 
obtained from Beech Aircraft Corporation, 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, Wichita Aircraft Certification Office, Small 
Airplane Directorate, 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:
Karl Schletzbaum, Aerospace Engineer, ACE-116W, Wichita Aircraft 
Certification Office, FAA, Small Airplane Directorate, 1801 Airport 
Road, Room 100, Mid-Continent Airport, Wichita, Kansas; telephone (316) 
946-4146; fax (316) 946-4407.

SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal 
Aviation Regulations (14 CFR part 39) by superseding AD 95-10-01, 
amendment 39-9218 (60 FR 22501, May 8, 1995), which is applicable to 
certain Beech (Raytheon) Model Hawker 1000 and BAe 125-1000A series 
airplanes, was published in the Federal Register on May 21, 1996 (61 FR 
25418). That action proposed to supersede AD 95-10-01 to continue to 
require inspections to detect various discrepancies of the fuel hose 
assemblies on the auxiliary power unit (APU), and correction of any 
discrepancy found. That action also proposed to add a new requirement 
to replace the existing vinyl conduit of the fuel feed hose for the APU 
with a new improved conduit, which would constitute terminating action 
for the repetitive inspection requirements.
    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.

Cost Impact

    There are approximately 48 Beech Model Hawker 1000 and BAe 125-
1000A series airplanes of the affected design in the worldwide fleet. 
The FAA estimates that 31 airplanes of U.S. registry will be affected 
by this proposed AD.
    The actions that are currently required by AD 95-10-01 and retained 
in this new AD take approximately 1 work hour per airplane to 
accomplish, at an average labor rate of $60 per work hour. Based on 
these figures, the cost impact on U.S. operators of the actions 
currently required is estimated to be $1,860, or $60 per airplane.
    The new actions that are required by this new AD will take 
approximately 4 work hours per airplane to accomplish, at an average 
labor rate of $60 per work hour. Required parts will cost approximately 
$218 per airplane. Based on these figures, the cost impact on U.S. 
operators of the new requirements of this AD is estimated to be 
$14,198, or $458 per airplane.
    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 removing amendment 39-9218 (60 FR 
22501, May 8, 1995), and by adding a new airworthiness directive (AD), 
amendment 39-9718, to read as follows:

96-17-09  Beech Aircraft Corporation (formerly DeHavilland; Hawker 
Siddeley; British Aerospace, plc; Raytheon Corporate Jets, Inc.): 
Amendment 39-9718. Docket 96-NM-54-AD. Supersedes AD 95-10-01, 
Amendment 39-9218.

    Applicability: Model Hawker 1000 and BAe 125-1000A series 
airplanes, post modification 259722C; 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 (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: Beech (Raytheon) Model BAe 125-1000B 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

[[Page 42996]]

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 the Model 
BAe 125-1000B series airplanes are approved for operation should 
consider adopting corrective action, applicable to those models, 
that is similar to the corrective action required by this AD.

    Compliance: Required as indicated, unless accomplished 
previously.
    To prevent failure of a fuel hose assembly on the auxiliary 
power unit (APU), which could result in a malfunction of the APU, a 
potential fuel fire in the fuselage rear bay, and reduced structural 
integrity of the surrounding structure, accomplish the following:
    (a) Within 30 days after May 23, 1995 (the effective date of AD 
95-10-01, amendment 39-9218), perform inspections to detect 
discrepancies of the fuel feed hose assemblies on the APU; an 
inspection to assure proper positioning of the air leak detection 
system; and an inspection of the bleed air system for signs of 
leakage; in accordance with paragraph 2.B. of the Accomplishment 
Instructions of Raytheon Service Bulletin SB 49-44, dated January 
20, 1995.
    (1) If no discrepancy is found: Thereafter, following the last 
flight of each day, perform an inspection to detect discoloration of 
the fuel hose assembly (outlet from the fuel pump box) on the APU, 
in accordance with paragraph 2.B.(2) and 2.C. of the Accomplishment 
Instructions of the service bulletin.
    (2) If any discrepancy is found, prior to further flight, 
correct the discrepancy in accordance with paragraph 2.B. of the 
Accomplishment Instructions of the service bulletin.
    (b) Within 200 flight hours after the effective date of this AD, 
replace the existing conduit of the fuel feed hose for the auxiliary 
power unit (APU) with new improved conduit (modification 25A825A), 
in accordance with Beech (Raytheon/Hawker) Service Bulletin SB.49-
47-25A825A, dated August 1, 1995. Accomplishment of the replacement 
constitutes terminating action for paragraph (a) of this AD.
    (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 49-44, dated January 20, 1995, or Beech 
(Raytheon/Hawker) Service Bulletin SB.49-47-25A825A, dated August 1, 
1995. The incorporation by reference of Beech (Raytheon/Hawker) 
Service Bulletin SB.49-47-25A825A, dated August 1, 1995, was 
approved by the Director of the Federal Register in accordance with 
5 U.S.C. 552(a) and 1 CFR part 51. The incorporation by reference of 
Raytheon Service Bulletin SB 49-44, dated January 20, 1995, was 
approved previously by the Director of the Federal Register in 
accordance with 5 U.S.C. 552(a) and 1 CFR part 51 as of May 23, 1995 
(60 FR 22501, May 8, 1995). Copies may be obtained from Beech 
Aircraft Corporation, 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, Wichita Aircraft Certification Office, 
Small Airplane Directorate, 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 September 24, 1996.

    Issued in Renton, Washington, on August 12, 1996.
Darrell M. Pederson,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 96-21009 Filed 8-19-96; 8:45 am]
BILLING CODE 4910-13-U