[Federal Register Volume 62, Number 226 (Monday, November 24, 1997)]
[Rules and Regulations]
[Pages 62513-62514]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 97-30712]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 92-CE-46-AD; Amendment 39-10214; AD 97-24-07]
RIN 2120-AA64


Airworthiness Directives; Jetstream Aircraft Limited Jetstream 
Models 3101 and 3201 Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Final rule.

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SUMMARY: This amendment adopts a new airworthiness directive (AD) that 
applies to Jetstream Aircraft Limited (JAL) Jetstream Models 3101 and 
3201 airplanes that have kit JK 2496 and modification JM 7537 
installed. This action requires installing magnetic latching relays on 
the ignition system because of the auto-ignition system becoming 
disabled when switching from ground power to the airplane's internal 
power. This AD is the result of mandatory continuing airworthiness 
information (MCAI) issued by the airworthiness authority for the United 
Kingdom. The actions specified by this AD are intended to prevent loss 
of the airplane's internal power connection to the auto-ignition 
system, which could cause loss of engine power and possible loss of 
control of the airplane.

DATES: Effective December 31, 1997.
    The incorporation by reference of certain publications listed in 
the regulations is approved by the Director of the Federal Register as 
of December 31, 1997.

ADDRESSES: Service information that applies to this AD may be obtained 
from Jetstream Aircraft Limited, Prestwick Airport, Ayrshire, KA9 2RW, 
Scotland; telephone (0292) 79888; facsimile (0292) 79703. This 
information may also be examined at the Federal Aviation Administration 
(FAA), Central Region, Office of the Regional Counsel, Attention: Rules 
Docket 92-CE-46-AD, Room 1558, 601 E. 12th Street, Kansas City, 
Missouri 64106; or at the Office of the Federal Register, 800 North 
Capitol Street, NW., suite 700, Washington, DC.

FOR FURTHER INFORMATION CONTACT: Mr. S. M. Nagarajan, Project Officer, 
Small Airplane Directorate, 1201 Walnut, suite 900, Kansas City, 
Missouri, 64106; telephone (816) 426-6932, facsimile (816) 426-2169.

SUPPLEMENTARY INFORMATION:

Events Leading to the Issuance of This AD

    A proposal to amend part 39 of the Federal Aviation Regulations (14 
CFR part 39) to include an AD that would apply to certain JAL Jetstream 
Models 3101 and 3201 airplanes, serial numbers 693 through 870, that 
have kit JK 2496 and modification JM 7537 installed and are registered 
in the United States, was published in the Federal Register on April 
14, 1997 (62 FR 18062). The action proposed to require installing 
magnetically latching relays with wiring changes.
    Accomplishment of the installation would be in accordance with 
Jetstream Service Bulletin No. 74-JM 7693A, Original Issue dated May 
17, 1990; Revision No. 3 dated January 28, 1993.
    Interested persons have been afforded an opportunity to participate 
in the making of this amendment. No comments were received on the 
proposed rule or the FAA's determination of the cost to the public.

The FAA's Determination

    After careful review of all available information related to the 
subject presented above, the FAA has determined that air safety and the 
public interest require the adoption of the rule as proposed except for 
minor editorial corrections. The FAA has determined that these minor 
corrections will not change the meaning of the AD and will not add any 
additional burden upon the public than was already proposed.

Cost Impact

    The FAA estimates that 126 airplanes in the U.S. registry will be 
affected by this AD, that it will take approximately 9 workhours per 
airplane to accomplish this action, and that the average labor rate is 
approximately $60 an hour. The

[[Page 62514]]

manufacturer is providing the parts at no charge. Based on these 
figures, the total cost impact of this AD on U.S. operators is 
estimated to be $68,040 or $540 per airplane.
    Jetstream has informed the FAA it has received approximately 78 
orders for the parts to accomplish this action. If each set of parts is 
installed on an affected airplane, the estimated cost to the owners/
operators in the U.S. will be reduced from 68,040 to $25,920.

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 copy of the final evaluation prepared for this 
action is contained in the Rules Docket. A copy of it may be obtained 
by contacting 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 a new airworthiness directive 
(AD) to read as follows:

97-24-07 Jetstream Aircraft Limited: Amendment 39-10214; Docket No. 
92-CE-46-AD.

    Applicability: Model 3101 and 3201 airplanes, serial numbers 693 
through 870, certificated in any category, that have kit JK 2496 and 
modification JM 7537 installed.

    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.
    Compliance: Required within the next 100 hours time-in-service 
(TIS) after the effective date of this AD, unless already 
accomplished.
    To prevent loss of the airplane's internal power connection to 
the auto-ignition system, which could cause loss of engine power and 
possible loss of the airplane, accomplish the following:
    (a) Install magnetically latching relays with wiring changes 
(quantity 2) in accordance with the ACCOMPLISHMENT INSTRUCTIONS 
section of Jetstream Service Bulletin (SB) No. 74-JM 7693A, Original 
Issue dated May 17, 1990; Revision 3, dated January 28, 1993.
    (b) 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.
    (c) An alternative method of compliance or adjustment of the 
compliance time that provides an equivalent level of safety may be 
approved by the Manager, Small Airplane Directorate, 1201 Walnut, 
suite 900, Kansas City, Missouri, 64106. The request shall be 
forwarded through an appropriate FAA Maintenance Inspector, who may 
add comments and then send it to the Manager, Small Airplane 
Directorate.

    Note 2: Information concerning the existence of approved 
alternative methods of compliance with this AD, if any, may be 
obtained from Small Airplane Directorate.

    (d) The installation required by this AD shall be done in 
accordance with BAe JETSTREAM Service Bulletin No. 74-JM 7693A, 
ORIGINAL ISSUE: May 17, 1990; REVISION NO. 3, dated January 28, 
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 of this document may be obtained from Jetstream 
Aircraft Limited, Prestwick Airport, Ayrshire, KA9 2RW, Scotland, or 
may be inspected at the FAA, Central Region, Office of the Regional 
Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri, or at 
the Office of the Federal Register, 800 North Capitol Street, NW., 
suite 700, Washington, DC.

    Note 3: The subject of this AD addresses the United Kingdom's 
Civil Airworthiness Authority Mandatory BAe JETSTREAM Service 
Bulletin No. 74-JM 7693A, ORIGINAL ISSUE: May 17, 1990; REVISION NO. 
3, dated January 28, 1993.

    (e) This amendment (39-10214) becomes effective on December 31, 
1997.

    Issued in Kansas City, Missouri, on November 14, 1997.
Mary Ellen A. Schutt,
Acting Manager, Small Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 97-30712 Filed 11-21-97; 8:45 am]
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