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PROPOSED AD GULFSTREAM AEROSPACE LP (TYPE CERTIFICATE PREVIOUSLY HELD BY ISRAEL AIRCRAFT INDUSTRIES, LTD.): Docket No. FAA-2017-0693; Directorate Identifier 2017-NM-044-AD.
(a) COMMENTS DUE DATE

    We must receive comments by August 31, 2017.

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

    This AD applies to Gulfstream Aerospace LP Model Gulfstream 100, Astra
    SPX, and 1125 Westwind Astra airplanes, certificated in any  category,
    serial numbers 004, and 011 through 158 inclusive.

(d) SUBJECT

    Air Transport Association (ATA) of America Code 52, Doors.

(e) REASON

    This AD was  prompted by a  report that the  main entrance door  (MED)
    opened during flight,  and by the  determination that the  "CABIN DOOR
    UNLOCK" crew alerting system  (CAS) message may extinguish  before the
    handle latch pin is fully engaged.  We are issuing this AD to  prevent
    the MED  from opening  during flight,  which could  lead to structural
    damage and loss of control of the airplane.

(f) COMPLIANCE

    Comply with this AD within the compliance times specified,  unless al-
    ready done.

(g) RIGGING PROCEDURE

    Within 12 months after  the effective date of  this AD: Do an  updated
    rigging  procedure  for  the adjustment  of  the  MED microswitch,  in
    accordance  with the  Accomplishment Instructions  of Gulfstream  G100
    Service Bulletin 100-52-312, dated January 15, 2016.

(h) OTHER FAA AD PROVISIONS

    The following provisions also apply to this AD:

(1) Alternative Methods of Compliance (AMOCs):  The Manager, International
    Branch,  ANM-116,  Transport   Airplane  Directorate,  FAA,   has  the
    authority  to  approve  AMOCs  for this  AD,  if  requested  using the
    procedures found  in 14  CFR 39.19.  In accordance  with 14 CFR 39.19,
    send  your  request  to  your  principal  inspector  or  local  Flight
    Standards  District  Office, as  appropriate.  If sending  information
    directly to the International Branch, send it to the attention of  the
    person identified in paragraph (i)(2)  of this AD. Information may  be
    emailed to: 9-ANM-116-AMOC-REQUESTS@faa.gov. Before using any approved
    AMOC,  notify  your  appropriate  principal  inspector,  or  lacking a
    principal  inspector,  the  manager  of  the  local  flight  standards
    district office/certificate holding district office.

(2) Contacting the Manufacturer:  For any requirement in this AD to obtain
    corrective  actions   from  a   manufacturer,  the   action  must   be
    accomplished using  a method  approved by  the Manager,  International
    Branch, ANM-116,  Transport Airplane  Directorate, FAA;  or the  Civil
    Aviation  Authority  of  Israel  (CAAI);  or  the  CAAI's   authorized
    Designee. If approved by the CAAI Designee, the approval must  include
    the Designee's authorized signature.

(i) RELATED INFORMATION

(1) Refer  to  Mandatory Continuing Airworthiness Information  (MCAI) CAAI
    Airworthiness Directive  ISR-I-52-2017-03-29,  dated  January 3, 2017,
    for related information.  This  MCAI may be found in the AD docket  on
    the  Internet  at  http://www.regulations.gov  by  searching  for  and
    locating Docket No. FAA-2017-0693.

(2) For more information about this AD,  contact Tom Rodriguez,  Aerospace
    Engineer, International Branch, ANM-116 Transport Airplane Directorate
    FAA,  1601 Lind Avenue SW., Renton, WA 98057-3356;  telephone 425-227-
    1137; fax 425-227-1149.

(3) For  service information identified  in  this  AD,  contact Gulfstream
    Aerospace Corporation,  P.O. Box 2206, Mail Station D-25, Savannah, GA
    31402-2206; telephone 800-810-4853;  fax 912-965-3520; email pubs@gulf
    stream.com; Internet http://www.gulfstream.com/product_support/technic
    al_pubs/pubs/index.htm.  You may view this service information  at the
    FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA.
    For information on the availability of this material at the FAA,  call
    425-227-1221.

Issued in Renton, Washington, on  June 29, 2017. Michael Kaszycki,  Acting
Manager, Transport Airplane Directorate, Aircraft Certification Service.

DATES: We must receive comments on this NPRM by August 31, 2017.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0693; Directorate Identifier 2017-NM-044-AD]
RIN 2120-AA64

Airworthiness Directives; Gulfstream Aerospace LP (Type
Certificate Previously Held by Israel Aircraft Industries, Ltd.)
Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: We propose to adopt a new airworthiness directive (AD) for
certain Gulfstream Aerospace LP Model Gulfstream 100, Astra SPX, and
1125 Westwind Astra airplanes. This proposed AD was prompted by a
report that the main entrance door (MED) opened during flight, and by
the determination that the "CABIN DOOR UNLOCK" crew alerting system
(CAS) message may extinguish before the handle latch pin is fully
engaged. This proposed AD would require accomplishing an updated
rigging procedure for the adjustment of the MED microswitch. We are
proposing this AD to address the unsafe condition on these products.

DATES: We must receive comments on this NPRM by August 31, 2017.

ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, 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: Deliver to Mail address above between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays.

For service information identified in this NPRM, contact Gulfstream
Aerospace Corporation, P.O. Box 2206, Mail Station D-25, Savannah, GA
31402-2206; telephone 800-810-4853; fax 912-965-3520; email pubs@
gulfstream.com; Internet http://www.gulfstream.com/product_support/
technical_pubs/pubs/index.htm. You may view this referenced service
information at the FAA, Transport Airplane Directorate, 1601 Lind
Avenue SW., Renton, WA. For information on the availability of this
material at the FAA, call 425-227-1221.

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-2017-0693;
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
Operations 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: Tom Rodriguez, Aerospace Engineer,
International Branch, ANM-116, Transport Airplane Directorate, FAA,
1601 Lind Avenue SW., Renton, WA 98057-3356; telephone 425-227-1137;
fax 425-227-1149.

SUPPLEMENTARY INFORMATION:

Comments Invited

We invite you to send any written relevant data, views, or arguments
about this proposal. Send your comments to an address listed under the
ADDRESSES section. Include "Docket No. FAA-2017-0693; Directorate Ident-
ifier 2017-NM-044-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 re-
ceived by the closing date and may amend this proposed AD based on those
comments.

We will post all comments we receive, without change, to http://www.
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

The Civil Aviation Authority of Israel (CAAI), which is the
aviation authority for Israel, has issued Israeli Airworthiness
Directive ISR-I-52-2017-03-29, dated January 3, 2017 (referred to after
this as the Mandatory Continuing Airworthiness Information, or "the
MCAI"), to correct an unsafe condition for certain Gulfstream
Aerospace LP Model Gulfstream 100, Astra SPX, and 1125 Westwind Astra
airplanes. The MCAI states:

[The purpose of the Israeli AD is] to improve the Main Entrance Door (MED)
microswitch adjustment procedure so that the locking indication will be
extinguished when the door handle is locked.

The required actions include accomplishing an updated rigging procedure
for the adjustment of the MED microswitch. The unsafe condition is the
in-flight opening of the MED, which could lead to structural damage and
loss of control of the airplane. You may examine the MCAI in the AD docket
on the Internet at http://www.regulations.gov by searching for and
locating Docket No. FAA-2017-0693.

Related Service Information Under 1 CFR Part 51

Gulfstream Aerospace LP has issued G100 Service Bulletin 100-52-312,
dated January 15, 2016. The service information describes an updated
rigging procedure for the adjustment of the MED microswitch. 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.

FAA's Determination and Requirements of This 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 the State of Design Authority, we have
been notified of the unsafe condition described in the MCAI and service
information referenced above. We are proposing this AD because we
evaluated all pertinent information and determined an unsafe condition
exists and is likely to exist or develop on other products of these
same type designs.

Costs of Compliance

We estimate that this proposed AD affects 110 airplanes of U.S. registry.

We estimate the following costs to comply with this proposed AD:

Estimated Costs

Action Labor cost Parts cost Cost per product Cost on U.S. operators
MED microswitch adjustment 6 work-hours x $85 per hour = $510 $3 $513 $56,430

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 adding the following new airworthiness
directive (AD):