[Federal Register Volume 60, Number 30 (Tuesday, February 14, 1995)]
[Rules and Regulations]
[Pages 8290-8292]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 95-1698]



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DEPARTMENT OF TRANSPORTATION
14 CFR Part 39

[Docket No. 92-CE-22-AD; Amendment 39-9124; AD 95-02-06]


Airworthiness Directives; Jetstream Aircraft Limited (Formerly 
British Aerospace, Regional Aircraft Limited) Jetstream Model 3101 
Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Final rule.

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SUMMARY: This amendment supersedes Airworthiness Directive (AD) 91-08-
01, which currently requires the following on Jetstream Aircraft 
Limited (JAL) Jetstream Model 3101 airplanes: revising the maximum 
speed for flaps at 50 degrees from 153/149 knots indicated airspeed 
(KIAS) to 130 KIAS; and limiting the maximum flap extension to 20 
degrees anytime ice is present on the airplane. This action requires 
incorporating a flap system modification as terminating action for the 
requirements of AD 91-08-01. The actions specified by this AD are 
intended to prevent sudden pitch down of the airplane during icing 
conditions, which could lead to loss of control of the airplane.

DATES: Effective March 10, 1995.
    The incorporation by reference of certain publications listed in 
the regulations is approved by the Director of the Federal Register as 
of March 10, 1995.

ADDRESSES: Service information that applies to this AD may be obtained 
from Jetstream Aircraft Limited, Manager Product Support, Prestwick 
Airport, Ayrshire, KA9 2RW Scotland; telephone (44-292) 79888; 
facsimile (44-292) 79703; or Jetstream Aircraft Inc., Librarian, P.O. 
Box 16029, Dulles International Airport, Washington, DC 20041-6029; 
telephone (703) 406-1161; facsimile (703) 406-1469. This information 
may also be examined at the Federal Aviation Administration (FAA), 
Central Region, Office of the Assistant Chief Counsel, 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. Raymond A. Stoer, Program Officer, 
Brussels Aircraft Certification Office, FAA, Europe, Africa, and Middle 
East Office, c/o American Embassy, B-1000 Brussels, Belgium; telephone 
(322) 513.3830; facsimile (322) 230.6899; or Mr. John P. Dow, Sr., 
Project Officer, Small Airplane Directorate, Airplane Certification 
Service, FAA, 1201 Walnut, suite 900, Kansas City, Missouri 64106; 
telephone (816) 426-6932; facsimile (816) 426-2169.

SUPPLEMENTARY INFORMATION: A proposal (supplemental notice of proposed 
rulemaking) to amend part 39 of the Federal Aviation Regulations (14 
CFR part 39) to include an AD that would apply to certain JAL Model 
3101 airplanes was published in the Federal Register on October 13, 
1994 (59 FR 51875). The action proposed to supersede AD 91-08-01, 
Amendment 39-7007, with a new AD that would (1) Retain the flap system 
operating revision and limitation currently required until the 35-
degree flap system modification was incorporated; and (2) eventually 
require incorporating the 35-degree flap system modification in 
accordance with the instructions in Jetstream Aircraft Limited Service 
Bulletin No. 27-JA 910541, which consists of the following pages:

------------------------------------------------------------------------
                                            Revision                    
               Page Nos.                     level            Date      
------------------------------------------------------------------------
2, 5 through 30 and 33 through 45......  Revision 1...  November 11,    
                                                         1991.          
31.....................................  Revision 2...  February 4,     
                                                         1992.          
1, 3, 4, and 32........................  Revision 3...  November 16,    
                                                         1992.          
------------------------------------------------------------------------

    Interested persons have been afforded an opportunity to participate 
in the making of this amendment. One comment was received in favor of 
the proposal and no comments were received concerning the FAA's 
determination of the cost to the public.
    After careful review of all available information, 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 nor add any additional burden upon the public than was 
already proposed.
    The FAA estimates that 141 airplanes in the U.S. registry will be 
affected by this AD, that it will take approximately 23 workhours per 
airplane to accomplish the required action, and that the average labor 
rate is approximately $55 an hour. The manufacturer will provide parts 
at no cost to the owner/operator. Based on these figures, the 
[[Page 8291]] total cost impact of the AD on U.S. operators is 
estimated to be $178,365. This figure is based on the assumption that 
no affected owner/operator has incorporated the required modification.
    Jetstream Aircraft Limited has informed the FAA that 122 
modification kits have been delivered to affected airplane owners/
operators. Since each of these airplane operators have incorporated 
revised flight manual supplements, the FAA assumes that each of these 
kits is installed on one of the affected airplanes. With this in mind, 
the proposed cost impact upon U.S. operators would be reduced $154,330 
from $178,365 to $24,035. In addition, Jetstream Aircraft Limited 
informed the FAA that the other 19 affected airplanes are in the 
storage inventory of its sister company JSX. The policy of JSX is to 
incorporate this modification before distributing one of the affected 
airplanes to an operator. Taking these factors into consideration, this 
AD would provide no economic cost impact upon U.S. operators.
    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. 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 removing AD 91-08-01, Amendment 39-
7007 (56 FR 24333, May 30, 1991), and adding a new AD to read as 
follows:

95-02-06  Jetstream Aircraft Limited: Amendment 39-9124; Docket No. 
92-CE-22-AD. Supersedes AD 91-08-01, Amendment 39-7007.

    Applicability: Jetstream Model 3101 airplanes (all serial 
numbers), certificated in any category, that do not have the flap 
system modified in accordance with the ACCOMPLISHMENT INSTRUCTIONS 
section of Jetstream Service Bulletin (SB) 27-JA 910541, which 
consists of the following pages and revision levels:

------------------------------------------------------------------------
                                            Revision                    
               Page Nos.                     level            Date      
------------------------------------------------------------------------
2, 5 through 30 and 33 through 45......  Revision 1...  November 11,    
                                                         1991.          
31.....................................  Revision 2...  February 4,     
                                                         1992.          
1, 3, 4, and 32........................  Revision 3...  November 16,    
                                                         1992.          
------------------------------------------------------------------------

    Note 1: Compliance with a previous revision level of the above-
referenced service bulletin fulfills the applicable requirements of 
this AD.

    Compliance: Required as indicated after the effective date of 
this AD, unless already accomplished.
    To prevent sudden pitch down of the airplane during icing 
conditions, which could lead to loss of control of the airplane, 
accomplish the following:
    (a) Within the next 10 hours time-in-service (TIS) after June 
10, 1991 (the effective date of superseded AD 91-08-01), accomplish 
the following:
    (1) Modify the operating limitations placards located on the 
flight deck in accordance with British Aerospace (BAe) Alert SB No. 
27-A-JA 910340, dated March 25, 1991. This modification will limit 
the maximum flap extension speed at the 50-degree position to 130 
knots indicated airspeed (KIAS).
    (2) Insert a copy of this AD into the Limitations Section of the 
airplane flight manual.
    (b) Within the next 25 hours TIS after June 10, 1991 (the 
effective date of superseded AD 91-08-01), accomplish the following:
    (1) Fabricate a placard with the words ``Do not extend the flaps 
beyond the 20-degree position if ice is visible on the airplane and 
ensure that the landing gear selector is down prior to landing.'' 
Install this placard on the airplane's instrument panel within the 
pilot's clear view. Parts of the airplane where ice could 
specifically be visible include the windshield wipers, center 
windshield, propeller spinners, or inboard wing leading edges.
    (2) Operate the airplane in accordance with BAe Alert SB 27-A-JA 
910340, dated March 25, 1991, Section 2.B.--Instruction for Aircraft 
Operations, paragraphs (1)(a) and (1)(c) until Amendments P/32, P/
49, and P/52 have been received. Upon receipt, incorporate these 
amendments into Airplane Flight Manual (AFM) HP.4.10. Ensure that 
Amendment G/10 is incorporated into AFM HP.4.10.
    (c) Within the next 100 hours TIS after the effective date of 
this AD, incorporate the 35-degree flap modification (Amendment JA 
910541) in accordance with the ACCOMPLISHMENT INSTRUCTIONS section 
of Jetstream Aircraft Limited SB 27-JA 910541.
    (d) The actions required by paragraphs (a) and (b) of this AD 
may be terminated when the flap system is modified in accordance 
with Jetstream Aircraft Limited SB 27-JA 910541, as required by 
paragraph (c) of this AD.
    (e) 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 airplanes to a location where the 
requirements of this AD can be accomplished.
    (f) An alternative method of compliance or adjustment of the 
compliance times that provides an equivalent level of safety may be 
approved by the Manager, Brussels Aircraft Certification Office 
(ACO), FAA, Europe, Africa, and Middle East Office, c/o American 
Embassy, B-1000 Brussels, Belgium. The request should be forwarded 
through an appropriate FAA Maintenance Inspector, who may add 
comments and then send it to the Manager, Brussels ACO.

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

    (g) The modifications required by this AD shall be done in 
accordance with Jetstream Aircraft Limited Service Bulletin 27-JA 
910541, which consists of the following pages and revision levels:

------------------------------------------------------------------------
                                            Revision                    
               Page Nos.                     level            Date      
------------------------------------------------------------------------
2, 5 through 30 and 33 through 45......  Revision 1...  November 11,    
                                                         1991.          
31.....................................  Revision 2...  February 4,     
                                                         1992.          
1, 3, 4, and 32........................  Revision 3...  November 16,    
                                                         1992.          
------------------------------------------------------------------------

    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 Limited, 
Manager Product Support, Prestwick Airport, Ayrshire, KA9 2RW 
Scotland; telephone (44-292) 79888. Copies may be inspected at the 
FAA, Central Region, Office of the Assistant Chief Counsel, Room 
1558, 601 E. 12th Street, Kansas City, Missouri, or at the Office 
[[Page 8292]] of the Federal Register, 800 North Capitol Street, 
NW., suite 700, Washington, DC.
    (h) This amendment (39-9124) supersedes AD 91-08-01, Amendment 
39-7007.
    (i) This amendment (39-9124) becomes effective on March 10, 
1995.

    Issued in Kansas City, Missouri, on January 18, 1995.
Barry D. Clements,
Manager, Small Airplane Directorate, Aircraft Certification Service.
[FR Doc. 95-1698 Filed 2-13-95; 8:45 am]
BILLING CODE 4910-13-U