[Federal Register Volume 66, Number 223 (Monday, November 19, 2001)]
[Proposed Rules]
[Pages 57891-57896]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 01-28809]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 2000-CE-58-AD]
RIN 2120-AA64


Airworthiness Directives; British Aerospace Models HP.137 
Jetstream Mk.1, Jetstream Series 200, and Jetstream Series 3101 
Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Supplemental notice of proposed rulemaking (NPRM); Reopening of 
the comment period.

-----------------------------------------------------------------------

SUMMARY: This document proposes to revise an earlier proposed 
airworthiness directive (AD) that applies to British Aerospace Models 
HP.137 Jetstream Mk.1, Jetstream Series 200, and Jetstream Series 3101 
airplanes. This proposed AD would supersede Airworthiness Directive 
(AD) 98-13-03, which currently requires repetitive inspections of the 
main landing gear (MLG) hinge fittings, support angles, and attachment 
bolts and requires eventual installation of improved design MLG hinge 
fittings as terminating action for the repetitive inspections of the 
hinge fittings and attachment bolts. AD 98-13-03 specifies repetitive 
inspections of the support angles for those airplanes with the improved 
design MLG hinge fittings installed and exempts from the applicability 
those airplanes with the improved design MLG hinge fittings installed. 
The earlier NPRM would have retained the requirements of AD 98-13-03 
and would have removed the applicability exemption of those Models 
HP.137 Jetstream Mk.1 and Jetstream Series 200 airplanes with the 
improved design MLG hinge fittings installed. British Aerospace has 
informed us that it will not provide the improved design MLG hinge 
fittings free of charge. Since the cost burden has changed from the 
manufacturer to the owners/operators of the affected airplanes, we are 
reopening the comment period to allow the public the chance to comment 
on this additional cost burden.

DATES: The Federal Aviation Administration (FAA) must receive any 
comments on this proposed rule on or before December 21, 2001.

ADDRESSES: Submit comments to FAA, Central Region, Office of the 
Regional Counsel, Attention: Rules Docket No. 2000-CE-58-AD, 901 
Locust, Room 506, Kansas City, Missouri 64106. You may view any 
comments at this location between 8 a.m. and 4 p.m., Monday through 
Friday, except Federal holidays.
    You may get service information that applies to this proposed AD 
from British Aerospace Regional Aircraft, Prestwick International 
Airport, Ayrshire, KA9 2RW, Scotland; telephone: (01292) 479888; 
facsimile: (01292) 479703. You may also view this information at the 
Rules Docket at the address above.

FOR FURTHER INFORMATION CONTACT: Doug Rudolph, Aerospace Engineer, FAA, 
Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 
64106; telephone: (816) 329-4059; facsimile: (816) 329-4090.

SUPPLEMENTARY INFORMATION:

Comments Invited

    How do I comment on this proposed AD? The FAA invites comments on 
this proposed rule. You may submit whatever written data, views, or 
arguments you choose. You need to include the rule's docket number and 
submit your comments to the address specified under the caption 
ADDRESSES. We will consider all comments received on or before the 
closing date. We may amend this proposed rule in light of comments 
received. Factual information that supports your ideas and suggestions 
is extremely helpful in evaluating the effectiveness of this proposed 
AD action and determining whether we need to take additional rulemaking 
action.
    Are there any specific portions of this proposed AD I should pay 
attention to? We specifically invite comments on the overall 
regulatory, economic, environmental, and energy aspects of this 
proposed rule that might suggest a need to modify the rule. You may 
view all comments we receive before and after the closing date of the 
rule in the Rules Docket. We will file a report in the Rules Docket 
that summarizes each contact we have with the public that concerns the 
substantive parts of this proposed AD.
    How can I be sure FAA receives my comment? If you want us to 
acknowledge the receipt of your comments, you must include a self-
addressed, stamped postcard. On the postcard, write ``Comments to 
Docket No. 2000-CE-58-AD.'' We will date stamp and mail the postcard 
back to you.

Discussion

    Has FAA taken any action on the main landing gear (MLG) hinge 
fittings, support angles, and attachment bolts on British Aerospace 
Models HP.137 Jetstream Mk.1, Jetstream Series 200, and Jetstream 
Series 3101 airplanes to this point? On June 8, 1998, FAA issued

[[Page 57892]]

AD 98-13-03, Amendment 39-10591 (63 FR 33532, June 19, 1998). This AD 
currently requires the following on the above-referenced airplanes:

--Repetitive inspections of the MLG hinge fitting, support angles, and 
attachment bolts, and repairing or replacing any part that is cracked; 
and
--Eventual installation of improved design MLG hinge fittings, part 
number (P/N) 1379133B1 and 1379133B2 (Modification 5218), as 
terminating action for the repetitive inspections of the hinge fittings 
and attachment bolts. This AD specifies repetitive inspections of the 
support angles for those airplanes with the improved design MLG hinge 
fittings installed. However, the applicability of AD 98-13-03 exempts 
those airplanes with the improved design MLG hinge fittings installed 
from the actions of the AD.

    Accomplishment of these actions is required in accordance with the 
following service information:

--British Aerospace Jetstream Mandatory Service Bulletin (MSB) No. 7/5, 
which includes procedures for inspecting the left and right main 
landing gear hinge attachment nuts to the auxiliary and aft spars for 
signs of relative movement between the nuts and hinge fitting on Models 
HP.137 Jetstream Mk.1 and Jetstream Series 200 airplanes. This MSB 
incorporates the following effective pages:

------------------------------------------------------------------------
             Pages                Revision level            Date
------------------------------------------------------------------------
2 and 4.......................  Original Issue...  Mar. 31, 1982.
1 and 3.......................  Revision 1.......  May 23, 1988.
------------------------------------------------------------------------

--British Aerospace MSB No. 7/8, which includes procedures for 
inspecting the MLG hinge fitting for cracks, and repairing cracked 
hinge fittings on Models HP.137 Jetstream Mk.1 and Jetstream Series 200 
airplanes. This MSB incorporates the following effective pages:

------------------------------------------------------------------------
             Pages                Revision level            Date
------------------------------------------------------------------------
2, 5, 6, 7, and 8.............  Revision 2.......  Jan. 6, 1983.
1, 3, and 4...................  Revision 3.......  May 23, 1988.
------------------------------------------------------------------------

--Jetstream Alert Service Bulletin (ASB) 32-A-JA 850127, which includes 
procedures for inspecting the MLG hinge fitting and support angle for 
cracks on Jetstream Series 3101 airplanes. This ASB incorporates the 
following effective pages:

------------------------------------------------------------------------
             Pages                Revision level            Date
------------------------------------------------------------------------
5 through 14..................  Original Issue...  April 17, 1985.
1 through 4...................  Revision 2.......  Nov. 11, 1994.
------------------------------------------------------------------------

--Jetstream Service Bulletin (SB) 57-JM 5218, which includes procedures 
for installing improved design MLG hinge fittings, P/N 1379133B1 and 
1379133B2 (Modification 5218), on Models HP.137 Jetstream Mk.1, 
Jetstream Series 200, and certain Jetstream Series 3101 airplanes. This 
SB incorporates the following effective pages:

------------------------------------------------------------------------
             Pages                Revision level            Date
------------------------------------------------------------------------
11, 12, 17, 18, 19, 21, 22,     Revision 1.......  Sept. 29, 1987.
 23, 24, 27, 28, 29, 30, and
 31.
20............................  Revision 3.......  Jan. 29, 1990.
13 and 14.....................  Revision 4.......  Oct. 31, 1990.
1 through 10, 15, 16, 25, and   Revision 5.......  July 28, 1997.
 26.
------------------------------------------------------------------------

    The actions of AD 98-13-03 are consistent with our aging commuter 
aircraft policy, which briefly states that, when a modification exists 
that could eliminate or reduce the number of required critical 
inspections, the modification should be incorporated. This policy is 
based on our determination that reliance on critical repetitive 
inspections on airplanes utilized in commuter service carries an 
unnecessary safety risk when a design change exists that could 
eliminate or, in certain instances, reduce the number of those critical 
inspections.
    The alternative to installing improved design MLG hinge fittings 
would be to repetitively inspect this area for the life of the 
airplane.
    What has happened since AD 98-13-03 to initiate this action? Since 
AD 98-13-03 became effective, FAA has received comments regarding the 
applicability. The applicability of AD 98-13-03 exempts those airplanes 
with the improved design MLG hinge fittings installed as of the 
effective date of the AD. However, those airplanes that have the 
improved design MLG hinge fittings incorporated after the effective 
date of the AD are subject to repetitive inspections of the MLG support 
angles. Our intent was to require the inspections of the MLG support 
angles regardless of when the improved design MLG hinge fittings are 
incorporated.
    Therefore, we then determined that the exemption of those airplanes 
with the improved design MLG hinge fittings installed should be 
removed, and that all affected airplanes should have the MLG support 
angles repetitively inspected.
    Has FAA taken any action to this point? We issued a proposal to 
amend part 39 of the Federal Aviation Regulations (14 CFR part 39) to 
include an AD that would apply to certain British Aerospace Models 
HP.137 Jetstream Mk.1, Jetstream Series 200, and Jetstream Series 3101 
airplanes. This proposal was published in the Federal Register as a 
notice of proposed rulemaking (NPRM) on July 18, 2001 (66 FR 37435). 
The NPRM proposed to supersede AD 98-13-03. The NPRM also proposed to:

--Retain the requirement of repetitively inspecting the main landing 
gear (MLG) hinge fittings, support angles, and attachment bolts and the

[[Page 57893]]

requirement of repairing any cracked part;
--Require eventual installation of improved design MLG hinge fittings 
as terminating action for the repetitive inspections of the hinge 
fittings and attachment bolts; and
--Require repetitive inspections of the MLG support angles on all 
affected airplanes, even those with the improved design MLG hinge 
fittings installed.

    Was the public invited to comment? The FAA encouraged interested 
persons to participate in the making of this amendment. The following 
presents the comments received on the proposal and FAA's response to 
each comment:

Comment Issue No. 1: Change or Clarify the Applicability for the 
Model Jetstream 3101 Series Airplanes

    What is the commenter's concern? Two commenters question FAA's 
intent for the Model Jetstream 3101 Series airplanes, as follows:

--One commenter states that the AD should not require repetitive 
inspections of the support angles on the Model Jetstream 3101 Series 
airplanes once Modification JM5218 is incorporated. This commenter 
explains that this is explained in the most recent revised pages 
(Revision 5) of Jetstream SB 57-JM 5218.
--Another commenter states that we should have extended the 
applicability to all serial numbers of the Jetstream 3101 Series 
airplanes if we wanted the support angles of all post-modification 5218 
MLG fittings inspected. British Aerospace incorporated these fittings 
at the factory beginning with serial number 696. The applicability of 
the NPRM covered Model Jetstream 3101 Series airplanes up to serial 
number 695.

    What is FAA's response to the concern? We concur that the AD should 
reflect that the repetitive inspections of the support angles do not 
apply to Model Jetstream Series 3101 airplanes that have Modification 
JM5218 incorporated. At the time of issuing the NPRM, we did not have 
the revised pages (Revision 5) of that service bulletin.
    We are changing this proposed AD to reflect this change.
    Making this change also takes care of the concern for requiring the 
inspections on those Model Jetstream Series 3101 airplanes that have 
serial number of 696 or higher. Since these airplanes had Modification 
JM5218 incorporated at the factory, the repetitive inspections of the 
support angles are not necessary.
    The need for the repetitive inspections of the support angles on 
Models HP.137 Jetstream Mk.1 and Jetstream Series 200 airplanes still 
exists.

Comment Issue No. 2: Change the Cost Information To Reflect That 
British Aerospace Will Not Provide MLG Fittings Free of Charge

    What is the commenter's concern? One commenter states that, because 
British Aerospace considers Modification JM5218 optional, the company 
is not providing the MLG fittings at no cost, as indicated in the NPRM. 
The current cost of these parts is $14,000 per airplane.
    What is FAA's response to the concern? The FAA will revise the Cost 
Impact section of the final rule AD to reflect this change. Because 
this shifts the cost burden of these improved design MLG hinge fittings 
from the manufacturer to the owner/operator, we will reopen the comment 
period for this proposed AD.

Comment Issue No. 3: Require the Incorporation of Modification 
JM5218 to Reflect the Aging Aircraft Policy

    What is the commenter's concern? One commenter states that FAA 
should mandate the incorporation of Modification JM5218 in order to be 
consistent with the agency's aging aircraft policy. This policy briefly 
states that, when a modification exists that could eliminate or reduce 
the number of required critical inspections, the modification should be 
incorporated. The policy is based on FAA's determination that reliance 
on critical repetitive inspections on airplanes utilized in commuter 
service carries an unnecessary safety risk when a design change exists 
that could eliminate or, in certain instances, reduce the number of 
those critical inspections.
    What is FAA's response to the concern? Paragraph (d)(3) of the NPRM 
currently requires installing improved design MLG hinge fittings, part 
number (P/N) 1379133B1 (or FAA-approved equivalent P/N) and P/N 
1379133B2 (or FAA-approved equivalent P/N) upon accumulating 20,000 
landings on each MLG hinge fitting or within the next 50 landings after 
June 8, 1998 (the effective date of AD 98-13-03), whichever occurs 
later. These installations are Modification JM5218 so the commenter's 
concern is already incorporated in the NPRM.
    We will add a statement in this proposed AD to indicate that these 
installations and Modification JM5218 are the same.

The FAA's Determination

    What has FAA decided? After examining the circumstances and 
reviewing all available information related to the incidents described 
above, we have determined that:

--The unsafe condition exists or could develop on British Aerospace 
Models HP.137 Jetstream Mk.1, Jetstream Series 200, and Jetstream 
Series 3101 airplanes;
--The comment period should be reopened to allow the public the 
opportunity to comment on the change in the cost impact; and
--AD action should still be taken in order to correct this unsafe 
condition.

The Supplemental NPRM

    How will the changes to the NPRM impact the public? Since British 
Aerospace is not providing the MLG fittings free of charge as indicated 
in the NPRM, the $14,000 burden for these parts is on the owners/
operators of the affected airplanes. Because this shifts the cost 
burden of these improved design MLG hinge fittings from the 
manufacturer to the owner/operator, we will reopen the comment period 
for this proposed AD.
    What are the provisions of the supplemental NPRM? The provisions of 
this supplemental NPRM are the same as previously published.

Cost Impact

    How many airplanes does this AD impact? We estimate that this AD 
affects 236 airplanes in the U.S. registry.
    What is the cost impact of this AD on owners/operators of the 
affected airplanes? The FAA estimates that this AD will affect 71 
airplanes in the U.S. registry. We estimate the following costs to 
accomplish the actions:

----------------------------------------------------------------------------------------------------------------
                                      Labor cost          Parts cost       Per airplane cost      Fleet cost
----------------------------------------------------------------------------------------------------------------
Initial Inspection                61 workhours  x     Not Applicable      $3,660 per          71 airplanes  x
                                   $60 per hour =                          airplane            $3,660 =
                                   $3,660                                                      $259,860.
Hinge Fitting Installation        210 workhours  x    $14,000 per         $26,600 per         71 airplanes  x
                                   $60 per hour =      airplane            airplane            $26,600 per hour
                                   $12,600                                                     = $1,888,600.

[[Page 57894]]

 
Repetitive Support Angle          10 workhours  x     Not applicable      $600 per airplane   71 airplanes  x
 Inspections                       $60 per hour =                          per inspection      $600 = $42,600
                                   $600 per                                                    per inspection.
                                   inspection
----------------------------------------------------------------------------------------------------------------

Regulatory Impact

    Would this proposed AD impact various entities? The regulations 
proposed herein would not have a substantial direct effect 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, it is determined that this 
proposed rule would not have federalism implications under Executive 
Order 13132.
    Would this proposed AD involve a significant rule or regulatory 
action? For the reasons discussed above, I certify that this proposed 
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) if 
promulgated, 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 draft regulatory 
evaluation prepared for this action has been placed 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, Safety.

The Proposed Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the Federal Aviation Administration proposes to amend 
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. FAA amends Sec. 39.13 by removing Airworthiness Directive (AD) 
98-13-03, Amendment 39-10591 (63 FR 33532, June 19, 1998), and by 
adding a new AD to read as follows:

British Aerospace: Docket No. 2000-CE-58-AD; Supersedes AD 98-13-03, 
Amendment 39-10591.

    (a) What airplanes are affected by this AD? This AD affects the 
following airplane models and serial numbers that are certificated 
in any category:

------------------------------------------------------------------------
                 Model                            Serial No.
-----------------------------------------------------------------------
HP.137 Jetstream Mk.1.................  All serial numbers............
Jetstream Series 200..................  All serial numbers............
Jetstream Series 3101.................  601 through 695 that do not
                                         have Jetstream Service
                                         Bulletin 57-JM 5218
                                         incorporated (using the
                                         applicable Revision 4 or
                                         Revision 5 pages).
------------------------------------------------------------------------

    (b) Who must comply with this AD? Anyone who wishes to operate 
any of the above airplanes must comply with this AD.
    (c) What problem does this AD address? The actions specified by 
this AD are intended to detect, correct, and prevent future fatigue 
cracking of the main landing gear (MLG), which could result in 
structural failure of the MLG and consequent loss of airplane 
control during takeoff, landing, or taxi operations.

    Note 1: The compliance times of this AD are presented in 
landings. If you do not keep the total number of landings, then you 
may multiply the total number of airplane hours time-in-service 
(TIS) by 0.75.

    (d) What actions must I accomplish to address this problem? To 
address this problem, you must accomplish the following:

------------------------------------------------------------------------
           Actions                 Compliance            Procedures
------------------------------------------------------------------------
(1) For the Models HP.137     Inspect within the    Use the service
 Jetstream Mk.1 and            next 50 landings      information
 Jetstream 200 Series          after June 8, 1998    presented in
 airplanes, accomplish the     (the effective date   paragraph (e)(1) of
 following if part number (P/  of this AD 98-13-     this AD.
 N) 1379133B1 (or FAA-         03) or within 200
 approved equivalent P/N)      landings after the
 and P/N 1379133B2 (or FAA-    last inspection
 approved equivalent P/N)      required by AD 98-
 MLG hinge fittings are not    13-03, whichever
 installed. These              occurs later, and
 installations are             thereafter at
 Modification 5218:            intervals not to
(i) Inspect the MLG hinge      exceed 200
 attachment nuts to            landings. Resecure
 auxiliary and aft spars on    the MLG hinge
 both the left and right MLG   fitting prior to
 for signs of fuel leakage     further flight
 or signs of relative          after the
 movement between the nuts     applicable
 and hinge fitting.            inspection.
(ii) If any signs of fuel
 leakage or relative
 movement between the nuts
 and hinge fitting are found
 during any inspection
 required by paragraph
 (d)(1)(i) of this AD,
 resecure the MLG hinge
 fitting to auxiliary spar.
(iii) You may terminate the
 above inspections when
 Modification 5218 is
 incorporated. The
 repetitive inspections of
 the MLG hinge support
 angles as required by
 paragraph (d)(2) of this AD
 are still required.

[[Page 57895]]

 
(2) For all airplanes         Inspect upon          Inspect in
 regardless of the MLG hinge   accumulating 4,000    accordance with the
 fitting installed, inspect    landings on the MLG   service information
 the MLG hinge support         fitting or within     presented in
 angles for cracks. If any     the next 50 hours     paragraph (e)(2) or
 crack(s) is/are found in      TIS after the         (e)(3) of this AD,
 the support angles, replace   effective date of     as applicable.
 the cracked MLG hinge         this AD, whichever    Replace in
 fitting(s) with a P/N         occurs later,         accordance with the
 1379133B1 (or FAA-approved    unless already        service information
 equivalent P/N) or P/N        accomplished, and     presented in
 1379133B2 (or FAA-approved    thereafter at         paragraph (e)(4) of
 equivalent P/N) fitting.      intervals not to      this AD.
(i) For all airplanes: you     exceed 400 hours
 may terminate the             TIS. Accomplish any
 repetitive inspection         necessary
 requirement of paragraphs     replacement prior
 (d)(1)(i) and (d)(1)(ii) of   to further flight
 this AD after incorporating   after the
 Modification JM5218 on both   inspection where
 sides of the airplane.        the cracked support
(ii) For the Jetstream 3101    angle(s) is/are
 Series airplanes: the         found.
 repetitive inspections of
 the MLG support angles
 required by paragraph
 (d)(2) of this AD are no
 longer required after
 incorporating Modification
 JM5218 on both sides of the
 airplane.
(iii) If Modification JM5218
 is incorporated on both
 sides of a Jetstream 3101
 Series airplane in
 accordance with the
 provisions of AD 98-13-03,
 then the intent of
 paragraph (d)(3) of this AD
 is met and paragraph (d)(4)
 of this AD is the only
 paragraph that applies.
(iv) For the affected Models
 HP.137 Jetstream Mk.1 and
 Jetstream Series 200
 airplanes: the repetitive
 inspections of the MLG
 support angles required by
 paragraph (d)(2) of this AD
 are still required after
 incorporating Modification
 JM5218.
(3) For all airplanes,        Upon accumulating     In accordance with
 install improved design MLG   20,000 landings on    the service
 hinge fittings, P/N           each MLG hinge        information
 1379133B1 (or FAA-approved    fitting or within     presented in
 equivalent P/N) and P/N       the next 50           paragraph (e)(4) of
 1379133B2 (or FAA-approved    landings after June   this AD.
 equivalent P/N). These        8, 1998 (the
 installations are             effective date of
 Modification JM5218.          AD 98-13-03),
(i) For all airplanes: you     whichever occurs
 may terminate the             later, unless
 repetitive inspection         already
 requirement of paragraphs     accomplished.
 (d)(1)(i) and (d)(1)(ii) of
 this AD after incorporating
 Modification JM5218 on both
 sides of the airplane.
(ii) For the Jetstream 3101
 Series airplanes: the
 repetitive inspections of
 the MLG support angles
 required by paragraph
 (d)(2) of this AD are no
 longer required after
 incorporating Modification
 JM5218 on both sides of the
 airplane.
(iii) If Modification JM5218
 is incorporated on both
 sides of a Jetstream 3101
 Series airplane in
 accordance with the
 provisions of AD 98-13-03,
 then the intent of
 paragraph (d)(3) of this AD
 is met and paragraph (d)(4)
 of this AD is the only
 paragraph that applies.
(iv) For the affected Models
 HP.137 Jetstream Mk.1 and
 Jetstream Series 200
 airplanes: the repetitive
 inspections of the MLG
 support angles required by
 paragraph (d)(2) of this AD
 are still required after
 incorporating Modification
 JM5218.
(4) Do not install, on any    As of the effective   Not applicable.
 affected airplane, MLG        date of this AD.
 hinge fittings that are not
 P/N 1379133B1 (or FAA-
 approved equivalent P/N) or
 P/N 13790133B2 (or FAA-
 approved equivalent P/N).
------------------------------------------------------------------------

    (e) What service information applies to this AD? You must 
accomplish the actions of this AD in accordance with the following 
service bulletins:
    (1) British Aerospace Jetstream Mandatory Service Bulletin No. 
7/5, which applies to the affected Models HP.137 Jetstream Mk.1 and 
Jetstream Series 200 airplanes and incorporates the following pages:

[[Page 57896]]



------------------------------------------------------------------------
             Pages                Revision level            Date
------------------------------------------------------------------------
2 and 4.......................  Original Issue...  Mar. 31, 1982.
1 and 3.......................  Revision 1.......  May 23, 1988.
------------------------------------------------------------------------

    (2) British Aerospace Mandatory Service Bulletin No. 7/8, which 
applies to the affected Models HP.137 Jetstream Mk.1 and Jetstream 
Series 200 airplanes and incorporates the following effective pages:

------------------------------------------------------------------------
             Pages                Revision level            Date
------------------------------------------------------------------------
2, 5, 6, 7, and 8.............  Revision 2.......  Jan. 6, 1983.
1, 3, and 4...................  Revision 3.......  May 23, 1988.
------------------------------------------------------------------------

    (3) Jetstream Alert Service Bulletin 32-A-JA 850127, which 
applies to the affected Jetstream Series 3101 airplanes and 
incorporates the following effective pages:

------------------------------------------------------------------------
             Pages                Revision level            Date
------------------------------------------------------------------------
5 through 14..................  Original Issue...  April 17, 1985.
1 through 4...................  Revision 2.......  Nov. 11, 1994.
------------------------------------------------------------------------

    (4) Jetstream Service Bulletin 57-JM 5218, which applies to all 
of the affected airplanes and incorporates the following effective 
pages:

------------------------------------------------------------------------
             Pages                Revision level            Date
------------------------------------------------------------------------
11, 12, 17, 18, 19, 21, 22,     Revision 1.......  Sept. 29, 1987.
 23, 24, 27, 28, 29, 30, and
 31.
20............................  Revision 3.......  Jan. 29, 1990.
13 and 14.....................  Revision 4.......  Oct. 31, 1990.
1 through 10, 15, 16, 25, and   Revision 5.......  July 28, 1997.
 26.
------------------------------------------------------------------------

    (f) Can I comply with this AD in any other way? You may use an 
alternative method of compliance or adjust the compliance time if:
    (i) Your alternative method of compliance provides an equivalent 
level of safety; and
    (ii) The Manager, Small Airplane Directorate, approves your 
alternative. Submit your request through an FAA Principal 
Maintenance Inspector, who may add comments and then send it to the 
Manager, Small Airplane Directorate.
    (2) Alternative methods of compliance approved in accordance 
with
    AD 98-13-03, which is superseded by this AD, are approved as 
alternative methods of compliance with this AD.

    Note 2: This AD applies to each airplane identified in paragraph 
(a) of this AD, 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(f) 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 you have not eliminated the unsafe condition, specific 
actions you propose to address it.

    (g) Where can I get information about any already-approved 
alternative methods of compliance? Contact Doug Rudolph, Aerospace 
Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, 
Kansas City, Missouri 64106; telephone: (816) 329-4059; facsimile: 
(816) 329-4090.
    (h) What if I need to fly the airplane to another location to 
comply with this AD? The FAA can issue a special flight permit under 
sections 21.197 and 21.199 of the Federal Aviation Regulations (14 
CFR 21.197 and 21.199) to operate your airplane to a location where 
you can accomplish the requirements of this AD.
    (i) How do I get copies of the documents referenced in this AD? 
You may obtain copies of the documents referenced in this AD from 
British Aerospace Regional Aircraft, Prestwick International 
Airport, Ayrshire, KA9 2RW, Scotland; telephone: (01292) 479888; 
facsimile: (01292) 671715.You may examine these documents at FAA, 
Central Region, Office of the Regional Counsel, 901 Locust, Room 
506, Kansas City, Missouri 64106.
    (j) Does this AD action affect any existing AD actions? This 
amendment supersedes AD 98-13-03, Amendment 39-10591.

    Issued in Kansas City, Missouri, on November 13, 2001.
Michael Gallagher,
Manager, Small Airplane Directorate, Aircraft Certification Service.
[FR Doc. 01-28809 Filed 11-16-01; 8:45 am]
BILLING CODE 4910-13-U