[Federal Register Volume 59, Number 117 (Monday, June 20, 1994)]
[Unknown Section]
[Page 0]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 94-14502]


[[Page Unknown]]

[Federal Register: June 20, 1994]


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DEPARTMENT OF TRANSPORTATION
14 CFR Part 39

[Docket No. 93-NM-198-AD; Amendment 39-8941; AD 94-13-01]

 

Airworthiness Directives; Jetstream Aircraft Limited Model 4101 
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 Jetstream Model 4101 airplanes, that requires 
installation of new fairlead assemblies and P-clips; inspection to 
detect damage of the wiring harness at the wing rear spars; repair or 
replacement of any damaged wiring harness with a new wiring harness 
assembly; and verification of the position of the currently installed 
P-clips, and repositioning, if necessary. This amendment is prompted by 
a report of abrasion of an electrical power cable in the wiring harness 
at the wing rear spar. The actions specified by this AD are intended to 
prevent abrasion of electrical power cables in the wiring harnesses at 
the wing rear spars, which could lead to a dormant failure of emergency 
fuel and hydraulic shutoff services.

DATES: Effective July 20, 1994.
    -The incorporation by reference of certain publications listed in 
the regulations is approved by the Director of the Federal Register as 
of July 20, 1994.

ADDRESSES: The service information referenced in this AD may be 
obtained from Jetstream Aircraft, Inc., P.O. Box 16029, Dulles 
International Airport, Washington, DC 20041-6029. 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: 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: 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 Jetstream Model 4101 
airplanes was published in the Federal Register on February 14, 1994 
(59 FR 6933). That action proposed to require installation of new 
fairlead assemblies and P-clips; inspection to detect damage of the 
wiring harness at the wing rear spars; repair or replacement of any 
damaged wiring harness with a new wiring harness assembly; and 
verification of the position of the currently installed P-clips, and 
repositioning, if necessary.
    -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 12 airplanes of U.S. registry will be 
affected by this AD, that it will take approximately 2 work hours per 
airplane to accomplish the required actions, and that the average labor 
rate is $55 per work hour. Required parts will be provided by the 
manufacturer at no cost to the operator. Based on these figures, the 
total cost impact of the AD on U.S. operators is estimated to be 
$1,320, or $110 per airplane.
    -The total 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 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:

94-13-01 Jetstream Aircraft Limited: Amendment 39-8941. Docket 93-
NM-198-AD.

    Applicability: Model 4101 airplanes having constructor numbers 
41004 through 41016 inclusive, certificated in any category.
    Compliance: Required as indicated, unless accomplished 
previously.
    To prevent abrasion of the electrical power cables in the wiring 
harnesses at the wing rear spars, which could lead to a dormant 
failure of emergency fuel and hydraulic shutoff services, accomplish 
the following:
    (a) Within 3 months after the effective date of this AD, install 
new fairleads and P-clips, perform a visual inspection to detect 
damage of the wiring harness at the left and right wing rear spar, 
and verify that the currently installed P-clips are properly 
positioned; in accordance with Jetstream Series 4100 Service 
Bulletin J41-57-003, dated October 13, 1993.
    (1) If any wiring harness is found to be damaged, prior to 
further flight, accomplish the requirements of either paragraph 
(a)(1)(i) or (a)(1)(ii) of this AD.
    (i) Replace the damaged wiring harness with a new wiring harness 
assembly in accordance with Jetstream Series 4100 Aircraft 
Maintenance Manual. Or
    (ii) Repair the damaged wiring harness in accordance with a 
method approved by the Manager, Standardization Branch, ANM-113, 
FAA, Transport Airplane Directorate.
    (2) If any currently installed P-clip is found to be improperly 
positioned, prior to further flight, reposition the P-clip 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. 
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 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 inspection shall be done in accordance with Jetstream 
Series 4100 Service Bulletin J41-57-003, dated October 13, 1993. 
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 Jetstream Aircraft, Inc., P.O. Box 
16029, Dulles International Airport, Washington, DC 20041-6029. 
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 July 20, 1994.

    Issued in Renton, Washington, on June 9, 1994.
Darrell M. Pederson,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 94-14502 Filed 6-17-94; 8:45 am]
BILLING CODE 4910-13-U