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PROPOSED AD BRITISH AEROSPACE REGIONAL AIRCRAFT: Docket No. FAA-2017-0639; Directorate Identifier 2017-CE-016-AD.
(a) COMMENTS DUE DATE

    We must receive comments by August 7, 2017.

(b) AFFECTED ADS

    This AD replaces AD 2014-07-09, Amendment 39-17823 (79 FR 22367; April
    22, 2014) ("2014-07-09").

(c) APPLICABILITY

    This  AD  applies  to British  Aerospace  Regional  Aircraft Jetstream
    Series 3101 and  Jetstream Model 3201  airplanes,  all serial numbers,
    certificated in any category.

(d) SUBJECT

    Air Transport Association of America (ATA) Code 5: Time Limits.

(e) REASON

    This AD was prompted by mandatory continuing airworthiness information
    (MCAI)  originated  by an  aviation  authority of  another  country to
    identify and correct an unsafe  condition on an aviation product.  The
    MCAI describes  the unsafe  condition as  inadequate instructions  for
    inspection for corrosion on the rudder upper hinge bracket and certain
    internal wing stations and drainage  paths. We are issuing this  AD to
    detect and  correct corrosion  on the  rudder upper  hinge bracket and
    internal wing, areas of the passenger/crew door hinges and  supporting
    structure,  the main  spar joint,  and the  engine support  attachment
    bolts,  which  could  lead  to  reduced  structural  integrity  of the
    airplane with consequent loss of control.

(f) ACTIONS AND COMPLIANCE

    Comply  with  paragraphs (f)(1)  through  (3) of  this  AD within  the
    compliance times specified, unless already done:

(1) Before further flight after the effective date of this AD, incorporate
    BAE  Systems  (Operations)  Limited  Jetstream  Series  3100  &   3200
    Corrosion Prevention  and Control  Programme, Manual  Ref. JS/CPCP/01,
    Revision 8,  dated October 15, 2016,  into the Limitations of your FAA
    -approved    maintenance   program    (instructions   for    continued
    airworthiness) on the basis of which the operator or the owner ensures
    the continuing airworthiness of each operated airplane, as  applicable
    to the airplane model.

(2) Do  all  tasks  at  the  times  specified  in BAE Systems (Operations)
    Limited Jetstream Series 3100 & 3200 Corrosion Prevention and  Control
    Programme, Manual Ref. JS/CPCP/01, Revision 8, dated October 15, 2016,
    or within  the next  12 months  after the  effective date  of this AD,
    whichever occurs later, except for  the following, which must be  done
    within 12 months  after the effective  date of this  AD: 52-11-002 C1,
    200/EX/01 C2, 500/IN/02 C1, 600/IN/04 C1, and 700/IN/04 C1.

(3) If any discrepancy,  particularly  corrosion,  is found during any in-
    spections or tasks  required by paragraphs  (f)(1) or (2)  of this AD,
    within  the   compliance  time   specified,  repair   or  replace,  as
    applicable, all  damaged structural  parts and  components and  do the
    maintenance  procedures for  corrective action  following BAE  Systems
    (Operations) Limited Jetstream Series 3100 & 3200 Corrosion Prevention
    and  Control  Programme,  Manual Ref.  JS/CPCP/01,  Revision 8,  dated
    October 15, 2016. If no compliance time is defined, do the  applicable
    corrective action before further flight.

(g) OTHER FAA AD PROVISIONS

    The following provisions also apply to this AD:

(1) Alternative  Methods  of  Compliance  (AMOCs):  The Manager, Standards
    Office,  FAA,  has the authority to approve AMOCs for this AD,  if re-
    quested using the procedures found in 14 CFR 39.19.  Send  information
    to  ATTN:  Doug  Rudolph,  Aerospace  Engineer,  FAA,  Small  Airplane
    Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106;  tele-
    phone: (816) 329-4059;  fax: (816) 329-4090;  email: doug.rudolph@faa.
    gov.  Before using any approved AMOC on any airplane to which the AMOC
    applies,  notify your appropriate principal inspector (PI)  in the FAA
    Flight Standards District Office (FSDO),  or lacking a PI,  your local
    FSDO.

(2) Airworthy Product: For any requirement in this AD to obtain corrective
    actions from a manufacturer or other source, use these actions if they
    are FAA-approved.  Corrective actions  are considered  FAA-approved if
    they are approved by the State of Design Authority (or their delegated
    agent). You are required to assure the product is airworthy before  it
    is returned to service.

(3) Reporting  Requirements:  For any reporting requirement in this AD,  a
    federal  agency  may not  conduct  or sponsor,  and  a person  is  not
    required to respond to, nor shall a person be subject to a penalty for
    failure to  comply with  a collection  of information  subject to  the
    requirements of the Paperwork Reduction Act unless that collection  of
    information  displays  a current  valid  OMB Control  Number.  The OMB
    Control Number  for this  information collection  is 2120-0056. Public
    reporting  for  this  collection of  information  is  estimated to  be
    approximately 5 minutes per response, including the time for reviewing
    instructions, completing and reviewing the collection of  information.
    All  responses  to  this  collection  of  information  are  mandatory.
    Comments concerning the  accuracy of this  burden and suggestions  for
    reducing the burden should be directed to the FAA at: 800 Independence
    Ave. SW., Washington, DC 20591, Attn: Information Collection Clearance
    Officer, AES-200.

(h) RELATED INFORMATION

    Refer to MCAI European Aviation Safety Agency (EASA) AD No.: 2017-0073
    dated April 27, 2017;  and BAE Systems (Operations)  Limited Jetstream
    Series 3100 & 3200 Corrosion Prevention and Control Programme,  Manual
    Ref.  JS/CPCP/01,  Revision 8,  dated  October 15,  2016;  for related
    information.   You  may   examine  the   MCAI  on   the  Internet   at
    http://www.regulations.gov by  searching for  and locating  Docket No.
    FAA-2017-0639. For service information related to this AD, contact BAE
    Systems   (Operations)  Limited,   Customer  Information   Department,
    Prestwick International Airport,  Ayrshire, KA9 2RW,  Scotland, United
    Kingdom;  telephone:  +44 1292 675207;  fax:  +44 1292 675704;  email:
    RApublications@baesystems.com;   Internet:  http://www.baesystems.com/
    Businesses/RegionalAircraft/.  You may review copies of the referenced
    service information at the FAA, Small Airplane Directorate, 901 Locust
    Kansas City, Missouri 64106.  For  information  on the availability of
    this material at the FAA, call (816) 329-4148.

Issued in  Kansas City,  Missouri, on  June 19, 2017.  Pat Mullen,  Acting
Manager, Small Airplane Directorate, Aircraft Certification Service.

DATES: We must receive comments on this proposed AD by August 7, 2017.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration


14 CFR Part 39

[Docket No. FAA-2017-0639; Directorate Identifier 2017-CE-016-AD]
RIN 2120-AA64

Airworthiness Directives; British Aerospace Regional Aircraft
Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: We propose to adopt a new airworthiness directive (AD) for
British Aerospace Regional Aircraft Jetstream Series 3101 and Jetstream
Model 3201 airplanes that would supersede AD 2014-07-09. This proposed
AD results from mandatory continuing airworthiness information (MCAI)
originated by an aviation authority of another country to identify and
correct an unsafe condition on an aviation product. The MCAI describes
the unsafe condition as inadequate instructions for inspection for
corrosion on the rudder upper hinge bracket and certain internal wing
and drainage paths. We are issuing this proposed AD to require actions
to address the unsafe condition on these products.

DATES: We must receive comments on this proposed AD by August 7, 2017.

ADDRESSES: You may send comments by any of the following methods:

Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the
instructions for submitting comments.

Fax: (202) 493-2251.

Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE., Washington, DC 20590.

Hand Delivery: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE., Washington, DC 20590, between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays.

For service information identified in this proposed AD, contact BAE
Systems (Operations) Limited, Customer Information Department,
Prestwick International Airport, Ayrshire, KA9 2RW, Scotland, United
Kingdom; telephone: +44 1292 675207; fax: +44 1292 675704; email:
RApublications@baesystems.com; Internet: http://www.baesystems.com/
Businesses/RegionalAircraft/. You may review copies of the referenced
service information at the FAA, Small Airplane Directorate, 901 Locust,
Kansas City, Missouri 64106. For information on the availability of
this material at the FAA, call (816) 329-4148.

Examining the AD Docket


You may examine the AD docket on the Internet at http://www.regulations.
gov by searching for and locating Docket No. FAA-2017-0639;
or in person at the Docket Management Facility between 9 a.m. and
5 p.m., Monday through Friday, except Federal holidays. The AD docket
contains this proposed AD, the regulatory evaluation, any comments
received, and other information. The street address for the Docket
Office (telephone (800) 647-5527) is in the ADDRESSES section. Comments
will be available in the AD docket shortly after receipt.

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

SUPPLEMENTARY INFORMATION:

Comments Invited


We invite you to send any written relevant data, views, or
arguments about this proposed AD. Send your comments to an address
listed under the ADDRESSES section. Include "Docket No. FAA-2017-0639;
Directorate Identifier 2017-CE-016-AD" at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of this proposed AD. We
will consider all comments received by the closing date and may amend
this proposed AD because of those comments.

We will post all comments we receive, without change, to http://
regulations.gov, including any personal information you provide. We
will also post a report summarizing each substantive verbal contact we
receive about this proposed AD.

Discussion

On April 4, 2014, we issued AD 2014-07-09, Amendment 39-17823 (79
FR 22367; April 22, 2014). That AD required actions intended to address
an unsafe condition on British Aerospace Regional Aircraft Model
Jetstream Series 3101 and Jetstream Model 3201 airplanes and was based
on mandatory continuing airworthiness information (MCAI) originated by
an aviation authority of another country.

Since we issued AD 2014-07-09, more extensive reports of corrosion
have been received, resulting in the need to inspect additional areas.

The European Aviation Safety Agency (EASA), which is the Technical
Agent for the Member States of the European Community, has issued EASA
AD No.: 2017-0073, dated April 27, 2017 (referred to after this as
"the MCAI"), to correct an unsafe condition for the specified
products. The MCAI states:

Maintenance instructions for BAE Jetstream 3100 and 3200
aeroplanes, which are approved by EASA, are currently defined and
published in the BAE Systems (Operations) Ltd Jetstream Series 3100
& 3200 Corrosion Prevention and Control Programme (CPCP) document,
JS/CPCP/01. These instructions have been identified as mandatory for
continued airworthiness.

Failure to accomplish these instructions could result in an
unsafe condition.

EASA issued AD 2012-0036 to require operators to comply with the
inspection instructions as contained in the CPCP at Revision 6.

Since that AD was issued, reports have been received of finding
extensive corrosion. While affected areas are covered by an existing
zonal inspection, it has been determined that this inspection is
inadequate to identify the corrosion in those areas. Consequently,
new inspection items 52-11-002 C1, 200/EX/01 C2, 500/IN/02 C1, 600/
IN/04 C1 and 700/IN/04 C1 have been added to the CPCP at Revision 8.

For the reason described above, this [EASA] AD retains the
requirements of EASA AD 2012-0036, which is superseded, and requires
accomplishment of the actions specified in BAE Systems (Operations)
Ltd Jetstream Series 3100 & 3200 CPCP, JS/CPCP/01, Revision 8
(hereafter referred to as `the CPCP' in this AD).

You may examine the MCAI on the Internet at http://www.regulations.gov by
searching for and locating Docket No. FAA-2017-0639.

Related Service Information Under 1 CFR Part 51

BAE Systems (Operations) Limited has issued British Aerospace
Jetstream Series 3100 & 3200 Corrosion Prevention and Control
Programme, Manual Ref: JS/CPCP/01, Revision 8, dated October 15, 2016.
The service information describes procedures for a comprehensive
corrosion prevent and control program. This service information is
reasonably available because the interested parties have access to it
through their normal course of business or by the means identified in
the ADDRESSES section of this NPRM.

FAA's Determination and Requirements of the Proposed AD


This product has been approved by the aviation authority of another
country, and is approved for operation in the United States. Pursuant
to our bilateral agreement with this State of Design Authority, they
have notified us of the unsafe condition described in the MCAI and
service information referenced above. We are proposing this AD because
we evaluated all information and determined the unsafe condition exists
and is likely to exist or develop on other products of the same type
design.

Costs of Compliance

We estimate that this proposed AD will affect 42 products of U.S.
registry. We also estimate that it would take about 100 work-hours per
product to comply with the basic requirements of this proposed AD. The
average labor rate is $85 per work-hour.

Based on these figures, we estimate the cost of the proposed AD on
U.S. operators to be $357,000, or $8,500 per product.

The scope of damage found in the required inspection could vary
significantly from airplane to airplane. We have no way of determining
how much damage may be found on each airplane or the cost to repair
damaged parts on each airplane or the number of airplanes that may
require repair.

Authority for This Rulemaking

Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. "Subtitle VII: Aviation
Programs," describes in more detail the scope of the Agency's
authority.

We are issuing this rulemaking under the authority described in
"Subtitle VII, Part A, Subpart III, Section 44701: General
requirements." Under that section, Congress charges the FAA with
promoting safe flight of civil aircraft in air commerce by prescribing
regulations for practices, methods, and procedures the Administrator
finds necessary for safety in air commerce. This regulation is within
the scope of that authority because it addresses an unsafe condition
that is likely to exist or develop on products identified in this
rulemaking action.

Regulatory Findings

We determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD 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.

For the reasons discussed above, I certify this proposed
regulation:

(1) Is not a "significant regulatory action" under Executive
Order 12866,

(2) Is not a "significant rule" under the DOT Regulatory Policies
and Procedures (44 FR 11034, February 26, 1979),

(3) Will not affect intrastate aviation in Alaska, and

(4) 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.

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.

The Proposed Amendment

Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 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. The FAA amends Sec. 39.13 by removing Amendment 39-17823 (79 FR
22367; April 22, 2014), and adding the following new AD: