82_FR_14011 82 FR 13961 - Special Conditions: Embraer S.A., Model ERJ 190-300 Series Airplanes; Flight Envelope Protection: Pitch, Roll, and High-Speed Limiting Functions

82 FR 13961 - Special Conditions: Embraer S.A., Model ERJ 190-300 Series Airplanes; Flight Envelope Protection: Pitch, Roll, and High-Speed Limiting Functions

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 82, Issue 50 (March 16, 2017)

Page Range13961-13962
FR Document2017-05200

These special conditions are issued for the Embraer S.A. Model ERJ 190-300 series airplanes. These airplanes will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport category airplanes. This design feature is an electronic flight control system that contains fly-by-wire control laws, including flight envelope protection functions that impose pitch-angle, bank-angle, and high- speed limits during normal operation. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.

Federal Register, Volume 82 Issue 50 (Thursday, March 16, 2017)
[Federal Register Volume 82, Number 50 (Thursday, March 16, 2017)]
[Rules and Regulations]
[Pages 13961-13962]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2017-05200]



========================================================================
Rules and Regulations
                                                Federal Register
________________________________________________________________________

This section of the FEDERAL REGISTER contains regulatory documents 
having general applicability and legal effect, most of which are keyed 
to and codified in the Code of Federal Regulations, which is published 
under 50 titles pursuant to 44 U.S.C. 1510.

The Code of Federal Regulations is sold by the Superintendent of Documents. 

========================================================================


Federal Register / Vol. 82, No. 50 / Thursday, March 16, 2017 / Rules 
and Regulations

[[Page 13961]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 25

[Docket No. FAA-2017-0135; Special Conditions No. 25-646-SC]


Special Conditions: Embraer S.A., Model ERJ 190-300 Series 
Airplanes; Flight Envelope Protection: Pitch, Roll, and High-Speed 
Limiting Functions

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final special conditions; request for comments.

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

SUMMARY: These special conditions are issued for the Embraer S.A. Model 
ERJ 190-300 series airplanes. These airplanes will have a novel or 
unusual design feature when compared to the state of technology 
envisioned in the airworthiness standards for transport category 
airplanes. This design feature is an electronic flight control system 
that contains fly-by-wire control laws, including flight envelope 
protection functions that impose pitch-angle, bank-angle, and high-
speed limits during normal operation. The applicable airworthiness 
regulations do not contain adequate or appropriate safety standards for 
this design feature. These special conditions contain the additional 
safety standards that the Administrator considers necessary to 
establish a level of safety equivalent to that established by the 
existing airworthiness standards.

DATES: This action is effective on Embraer S.A. on March 16, 2017. We 
must receive your comments by May 1, 2017.

ADDRESSES: Send comments identified by docket number FAA-2017-0135 
using any of the following methods:
     Federal eRegulations Portal: Go to http://www.regulations.gov/and follow the online instructions for sending your 
comments electronically.
     Mail: Send comments to Docket Operations, M-30, U.S. 
Department of Transportation (DOT), 1200 New Jersey Avenue SE., Room 
W12-140, West Building Ground Floor, Washington, DC 20590-0001.
     Hand Delivery or Courier: Take comments to Docket 
Operations in Room W12-140 of the West Building Ground Floor at 1200 
New Jersey Avenue SE., Washington, DC, between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays.
     Fax: Fax comments to Docket Operations at 202-493-2251.
    Privacy: The FAA will post all comments it receives, without 
change, to http://www.regulations.gov/, including any personal 
information the commenter provides. Using the search function of the 
docket Web site, anyone can find and read the electronic form of all 
comments received into any FAA docket, including the name of the 
individual sending the comment (or signing the comment for an 
association, business, labor union, etc.). DOT's complete Privacy Act 
Statement can be found in the Federal Register published on April 11, 
2000 (65 FR 19477- 19478), as well as at http://DocketsInfo.dot.gov/.
    Docket: Background documents or comments received may be read at 
http://www.regulations.gov/ at any time. Follow the online instructions 
for accessing the docket or go to Docket Operations in Room W12-140 of 
the West Building Ground Floor at 1200 New Jersey Avenue SE., 
Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, 
except Federal holidays.

FOR FURTHER INFORMATION CONTACT: Joe Jacobsen, FAA, Airplane and Flight 
Crew Interface Branch, ANM-111, Transport Airplane Directorate, 
Aircraft Certification Service, 1601 Lind Avenue SW., Renton, 
Washington 98057-3356; telephone 425-227-2011; facsimile 425-227-1149.

SUPPLEMENTARY INFORMATION: The FAA has determined that notice of, and 
opportunity for prior public comment on, these special conditions is 
impracticable because these procedures would delay issuance of the 
design approval and thus delivery of the affected airplane.
    In addition, the substance of these special conditions has been 
subject to the public comment process in several prior instances with 
no substantive comments received. The FAA therefore finds that good 
cause exists for making these special conditions effective upon 
publication in the Federal Register.

Comments Invited

    We invite interested people to take part in this rulemaking by 
sending written comments, data, or views. The most helpful comments 
reference a specific portion of the special conditions, explain the 
reason for any recommended change, and include supporting data.
    We will consider all comments we receive by the closing date for 
comments. We may change these special conditions based on the comments 
we receive.

Background

    On September 13, 2013, Embraer S.A. applied for an amendment to 
Type Certificate (TC) No. A57NM to include the new Model ERJ 190-300 
series airplanes. The ERJ 190-300 is a twin-engine, transport-category 
airplane derivative of the ERJ 190-100 STD. The ERJ 190-300 series 
airplane will have a maximum occupancy of 114 passengers and will 
include a new wing design with a high aspect ratio and raked wingtip, 
and a digital fly-by-wire electronic flight control system.

Type Certification Basis

    Under the provisions of Title 14, Code of Federal Regulations (14 
CFR) 21.101, Embraer S.A. must show that the ERJ 190-300 meets the 
applicable provisions of the regulations listed in Type Certificate No. 
A57NM or the applicable regulations in effect on the date of 
application for the change, except for earlier amendments as agreed 
upon by the FAA. Embraer S.A. must show that the ERJ 190-300 meets the 
applicable provisions of 14 CFR part 25, as amended by Amendments 25-1 
through 25-137.
    If the Administrator finds that the applicable airworthiness 
regulations (i.e., 14 CFR part 25) do not contain adequate or 
appropriate safety standards for the ERJ 190-300 because of a novel or 
unusual design feature, special conditions are prescribed under the 
provisions of Sec.  21.16.
    Special conditions are initially applicable to the model for which 
they are issued. Should the type certificate for that model be amended 
later to include any other model that incorporates the same novel or 
unusual design features, or should any other

[[Page 13962]]

model already included on the same type certificate be modified to 
incorporate the same novel or unusual design feature, these special 
conditions would also apply to the other model under Sec.  21.101.
    In addition to the applicable airworthiness regulations and special 
conditions, the ERJ 190-300 must comply with the fuel vent and exhaust 
emission requirements of 14 CFR part 34 and the noise-certification 
requirements of 14 CFR part 36.
    The FAA issues special conditions, as defined in 14 CFR 11.19, in 
accordance with Sec.  11.38, and they become part of the type 
certification basis under Sec.  21.101.

Novel or Unusual Design Features

    The ERJ 190-300 will incorporate the following novel or unusual 
design feature: An electronic flight control system that contains fly-
by-wire control laws, including flight envelope protection functions 
that impose pitch-angle, bank-angle, and high-speed limits during 
normal operation.

Discussion

    The Embraer S.A. ERJ 190-300 design has a full-digital flight 
control system, referred to as fly-by-wire architecture. The fly-by-
wire architecture provides closed-loop flight control laws and multiple 
protection functions.
    The basic characteristics of pitch, bank, and high-speed limiting 
functions are as follows:
    1. Pitch Limiting Function:
    While in normal mode, the ERJ 190-300 airplane presents positive 
and negative pitch attitude soft limits. After surpassing the 
established limits set at 30[deg] and -15[deg], the airplane presents a 
natural tendency to return (positive stability) to within these limits 
when pitch control is released.
    2. Bank Limiting Function (Spiral Stability and Roll Limiting):
    While in normal mode at speeds up to VMO/MMO 
(maximum operating limit speed), the ERJ 190-300 airplane presents 
neutral stability up to 33[deg] bank angle. Above 33[deg], positive 
spiral stability is introduced; however, there is no bank angle hard 
limit. When overspeed protection is engaged, positive spiral stability 
is provided in the range of 33[deg] and a bank angle hard 
limit (non-overridable) is set at that bank angle.
    3. High-Speed Limiting Function (Overspeed Protection):
    While in normal mode, the overspeed protection function prevents 
pilots from exceeding the airplane maximum design speeds by providing 
strong positive stability at and above VMO/MMO, 
and limiting aircraft speed to VDF/MDF 
(demonstrated flight diving speed).
    The controllability and maneuverability requirements of 14 CFR 
25.143 do not specifically relate to flight characteristics associated 
with fixed attitude limits or a high-speed limiter that might preclude 
or modify flying qualities assessment in the overspeed region.
    These special conditions contain the additional safety standards 
that the Administrator considers necessary to establish a level of 
safety equivalent to that established by the existing airworthiness 
standards.

Applicability

    As discussed above, these special conditions are applicable to the 
ERJ 190-300 series airplanes. Should Embraer S.A. apply at a later date 
for a change to the type certificate to include another model 
incorporating the same novel or unusual design feature, these special 
conditions would apply to that model as well.

Conclusion

    This action affects only a certain novel or unusual design feature 
on one model of airplane. It is not a rule of general applicability.
    The substance of these special conditions has been subjected to the 
notice and comment period in several prior instances and has been 
derived without substantive change from those previously issued. It is 
unlikely that prior public comment would result in a significant change 
from the substance contained herein. Therefore, because a delay would 
affect the certification of the airplane, the FAA has determined that 
prior public notice and comment are unnecessary and impracticable, and 
good cause exists for adopting these special conditions upon 
publication in the Federal Register. The FAA is requesting comments to 
allow interested persons to submit views that may not have been 
submitted in response to the prior opportunities for comment described 
above.

List of Subjects in 14 CFR Part 25

    Aircraft, Aviation safety, Reporting and recordkeeping 
requirements.

    The authority citation for these special conditions is as follows:

    Authority:  49 U.S.C. 106(g), 40113, 44701, 44702, 44704.

The Special Conditions

    Accordingly, pursuant to the authority delegated to me by the 
Administrator, the following special conditions are issued as part of 
the type certification basis for the Embraer S.A. Model ERJ 190-300 
series airplanes.

Flight Envelope Protection: Pitch, Roll, and High-Speed Limiting 
Functions

    In addition to Sec.  25.143, the following requirements apply:
    1. Pitch and Roll Limiting Functions.
    a. The pitch limiting function must not impede normal maneuvering 
for pitch angles up to the maximum required for normal maneuvering, 
including a normal all-engines operating takeoff, plus a suitable 
margin to allow for satisfactory speed control.
    b. The pitch and roll limiting functions must not restrict or 
prevent attaining pitch attitudes necessary for emergency maneuvering 
or roll angles up to 66[deg] with flaps up or 60[deg] with flaps down. 
Spiral stability, which is introduced above 33[deg] roll angle, must 
not require excessive pilot strength to achieve these roll angles. 
Other protections, which further limit the roll capability under 
certain extreme angle of attack or attitude or high speed conditions, 
are acceptable, as long as they allow at least 45[deg] of roll 
capability.
    c. A lower limit of roll is acceptable, beyond the overspeed 
warning, if it is possible to recover the aircraft to the normal flight 
envelope without undue difficulty or delay.
    2. High-Speed Limiting Functions.
    Operation of the high-speed limiter during all routine and descent 
procedure flight must not impede normal attainment of speeds up to 
overspeed warning.

Michael Kaszycki,
Assistant Manager, Transport Airplane Directorate, Aircraft 
Certification Service.
[FR Doc. 2017-05200 Filed 3-15-17; 8:45 am]
 BILLING CODE 4910-13-P



                                                                                                                                                                                               13961

                                                Rules and Regulations                                                                                         Federal Register
                                                                                                                                                              Vol. 82, No. 50

                                                                                                                                                              Thursday, March 16, 2017



                                                This section of the FEDERAL REGISTER                    Transportation (DOT), 1200 New Jersey                 these special conditions effective upon
                                                contains regulatory documents having general            Avenue SE., Room W12–140, West                        publication in the Federal Register.
                                                applicability and legal effect, most of which           Building Ground Floor, Washington, DC
                                                are keyed to and codified in the Code of                                                                      Comments Invited
                                                                                                        20590–0001.
                                                Federal Regulations, which is published under              • Hand Delivery or Courier: Take                     We invite interested people to take
                                                50 titles pursuant to 44 U.S.C. 1510.                                                                         part in this rulemaking by sending
                                                                                                        comments to Docket Operations in
                                                The Code of Federal Regulations is sold by              Room W12–140 of the West Building                     written comments, data, or views. The
                                                the Superintendent of Documents.                        Ground Floor at 1200 New Jersey                       most helpful comments reference a
                                                                                                        Avenue SE., Washington, DC, between 9                 specific portion of the special
                                                                                                        a.m. and 5 p.m., Monday through                       conditions, explain the reason for any
                                                DEPARTMENT OF TRANSPORTATION                            Friday, except Federal holidays.                      recommended change, and include
                                                                                                           • Fax: Fax comments to Docket                      supporting data.
                                                Federal Aviation Administration                         Operations at 202–493–2251.                             We will consider all comments we
                                                                                                           Privacy: The FAA will post all                     receive by the closing date for
                                                14 CFR Part 25                                          comments it receives, without change,                 comments. We may change these special
                                                [Docket No. FAA–2017–0135; Special                      to http://www.regulations.gov/,                       conditions based on the comments we
                                                Conditions No. 25–646–SC]                               including any personal information the                receive.
                                                                                                        commenter provides. Using the search                  Background
                                                Special Conditions: Embraer S.A.,                       function of the docket Web site, anyone
                                                Model ERJ 190–300 Series Airplanes;                     can find and read the electronic form of                On September 13, 2013, Embraer S.A.
                                                Flight Envelope Protection: Pitch, Roll,                all comments received into any FAA                    applied for an amendment to Type
                                                and High-Speed Limiting Functions                       docket, including the name of the                     Certificate (TC) No. A57NM to include
                                                                                                        individual sending the comment (or                    the new Model ERJ 190–300 series
                                                AGENCY:  Federal Aviation                                                                                     airplanes. The ERJ 190–300 is a twin-
                                                Administration (FAA), DOT.                              signing the comment for an association,
                                                                                                                                                              engine, transport-category airplane
                                                                                                        business, labor union, etc.). DOT’s
                                                ACTION: Final special conditions; request                                                                     derivative of the ERJ 190–100 STD. The
                                                                                                        complete Privacy Act Statement can be
                                                for comments.                                                                                                 ERJ 190–300 series airplane will have a
                                                                                                        found in the Federal Register published
                                                                                                                                                              maximum occupancy of 114 passengers
                                                SUMMARY:    These special conditions are                on April 11, 2000 (65 FR 19477–
                                                                                                                                                              and will include a new wing design
                                                issued for the Embraer S.A. Model ERJ                   19478), as well as at http://
                                                                                                                                                              with a high aspect ratio and raked
                                                190–300 series airplanes. These                         DocketsInfo.dot.gov/.
                                                                                                           Docket: Background documents or                    wingtip, and a digital fly-by-wire
                                                airplanes will have a novel or unusual                                                                        electronic flight control system.
                                                design feature when compared to the                     comments received may be read at
                                                state of technology envisioned in the                   http://www.regulations.gov/ at any time.              Type Certification Basis
                                                airworthiness standards for transport                   Follow the online instructions for                       Under the provisions of Title 14, Code
                                                category airplanes. This design feature                 accessing the docket or go to Docket                  of Federal Regulations (14 CFR) 21.101,
                                                is an electronic flight control system                  Operations in Room W12–140 of the                     Embraer S.A. must show that the ERJ
                                                that contains fly-by-wire control laws,                 West Building Ground Floor at 1200                    190–300 meets the applicable
                                                including flight envelope protection                    New Jersey Avenue SE., Washington,                    provisions of the regulations listed in
                                                functions that impose pitch-angle, bank-                DC, between 9 a.m. and 5 p.m., Monday                 Type Certificate No. A57NM or the
                                                angle, and high-speed limits during                     through Friday, except Federal holidays.              applicable regulations in effect on the
                                                normal operation. The applicable                        FOR FURTHER INFORMATION CONTACT: Joe                  date of application for the change,
                                                airworthiness regulations do not contain                Jacobsen, FAA, Airplane and Flight                    except for earlier amendments as agreed
                                                adequate or appropriate safety standards                Crew Interface Branch, ANM–111,                       upon by the FAA. Embraer S.A. must
                                                for this design feature. These special                  Transport Airplane Directorate, Aircraft              show that the ERJ 190–300 meets the
                                                conditions contain the additional safety                Certification Service, 1601 Lind Avenue               applicable provisions of 14 CFR part 25,
                                                standards that the Administrator                        SW., Renton, Washington 98057–3356;                   as amended by Amendments 25–1
                                                considers necessary to establish a level                telephone 425–227–2011; facsimile                     through 25–137.
                                                of safety equivalent to that established                425–227–1149.                                            If the Administrator finds that the
                                                by the existing airworthiness standards.                SUPPLEMENTARY INFORMATION: The FAA                    applicable airworthiness regulations
                                                DATES: This action is effective on                      has determined that notice of, and                    (i.e., 14 CFR part 25) do not contain
                                                Embraer S.A. on March 16, 2017. We                      opportunity for prior public comment                  adequate or appropriate safety standards
                                                must receive your comments by May 1,                    on, these special conditions is                       for the ERJ 190–300 because of a novel
                                                2017.                                                   impracticable because these procedures                or unusual design feature, special
                                                ADDRESSES: Send comments identified                     would delay issuance of the design                    conditions are prescribed under the
                                                by docket number FAA–2017–0135                          approval and thus delivery of the                     provisions of § 21.16.
jstallworth on DSK7TPTVN1PROD with RULES




                                                using any of the following methods:                     affected airplane.                                       Special conditions are initially
                                                   • Federal eRegulations Portal: Go to                    In addition, the substance of these                applicable to the model for which they
                                                http://www.regulations.gov/and follow                   special conditions has been subject to                are issued. Should the type certificate
                                                the online instructions for sending your                the public comment process in several                 for that model be amended later to
                                                comments electronically.                                prior instances with no substantive                   include any other model that
                                                   • Mail: Send comments to Docket                      comments received. The FAA therefore                  incorporates the same novel or unusual
                                                Operations, M–30, U.S. Department of                    finds that good cause exists for making               design features, or should any other


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                                                13962             Federal Register / Vol. 82, No. 50 / Thursday, March 16, 2017 / Rules and Regulations

                                                model already included on the same                      limiting aircraft speed to VDF/MDF                    certification basis for the Embraer S.A.
                                                type certificate be modified to                         (demonstrated flight diving speed).                   Model ERJ 190–300 series airplanes.
                                                incorporate the same novel or unusual                      The controllability and
                                                                                                                                                              Flight Envelope Protection: Pitch, Roll,
                                                design feature, these special conditions                maneuverability requirements of 14 CFR
                                                                                                                                                              and High-Speed Limiting Functions
                                                would also apply to the other model                     25.143 do not specifically relate to flight
                                                under § 21.101.                                         characteristics associated with fixed                    In addition to § 25.143, the following
                                                  In addition to the applicable                         attitude limits or a high-speed limiter               requirements apply:
                                                airworthiness regulations and special                   that might preclude or modify flying                     1. Pitch and Roll Limiting Functions.
                                                conditions, the ERJ 190–300 must                        qualities assessment in the overspeed                    a. The pitch limiting function must
                                                comply with the fuel vent and exhaust                   region.                                               not impede normal maneuvering for
                                                emission requirements of 14 CFR part                       These special conditions contain the               pitch angles up to the maximum
                                                34 and the noise-certification                          additional safety standards that the                  required for normal maneuvering,
                                                requirements of 14 CFR part 36.                         Administrator considers necessary to                  including a normal all-engines operating
                                                  The FAA issues special conditions, as                 establish a level of safety equivalent to             takeoff, plus a suitable margin to allow
                                                defined in 14 CFR 11.19, in accordance                  that established by the existing                      for satisfactory speed control.
                                                with § 11.38, and they become part of                   airworthiness standards.                                 b. The pitch and roll limiting
                                                the type certification basis under                                                                            functions must not restrict or prevent
                                                § 21.101.                                               Applicability                                         attaining pitch attitudes necessary for
                                                                                                          As discussed above, these special                   emergency maneuvering or roll angles
                                                Novel or Unusual Design Features                                                                              up to 66° with flaps up or 60° with flaps
                                                                                                        conditions are applicable to the ERJ
                                                  The ERJ 190–300 will incorporate the                  190–300 series airplanes. Should                      down. Spiral stability, which is
                                                following novel or unusual design                       Embraer S.A. apply at a later date for a              introduced above 33° roll angle, must
                                                feature: An electronic flight control                   change to the type certificate to include             not require excessive pilot strength to
                                                system that contains fly-by-wire control                another model incorporating the same                  achieve these roll angles. Other
                                                laws, including flight envelope                         novel or unusual design feature, these                protections, which further limit the roll
                                                protection functions that impose pitch-                 special conditions would apply to that                capability under certain extreme angle
                                                angle, bank-angle, and high-speed limits                model as well.                                        of attack or attitude or high speed
                                                during normal operation.                                                                                      conditions, are acceptable, as long as
                                                                                                        Conclusion                                            they allow at least 45° of roll capability.
                                                Discussion                                                                                                       c. A lower limit of roll is acceptable,
                                                                                                          This action affects only a certain
                                                  The Embraer S.A. ERJ 190–300 design                   novel or unusual design feature on one                beyond the overspeed warning, if it is
                                                has a full-digital flight control system,               model of airplane. It is not a rule of                possible to recover the aircraft to the
                                                referred to as fly-by-wire architecture.                general applicability.                                normal flight envelope without undue
                                                The fly-by-wire architecture provides                     The substance of these special                      difficulty or delay.
                                                closed-loop flight control laws and                                                                              2. High-Speed Limiting Functions.
                                                                                                        conditions has been subjected to the
                                                multiple protection functions.                                                                                   Operation of the high-speed limiter
                                                                                                        notice and comment period in several
                                                  The basic characteristics of pitch,                                                                         during all routine and descent
                                                                                                        prior instances and has been derived
                                                bank, and high-speed limiting functions                                                                       procedure flight must not impede
                                                                                                        without substantive change from those
                                                are as follows:                                                                                               normal attainment of speeds up to
                                                                                                        previously issued. It is unlikely that
                                                  1. Pitch Limiting Function:                                                                                 overspeed warning.
                                                                                                        prior public comment would result in a
                                                  While in normal mode, the ERJ 190–
                                                                                                        significant change from the substance                 Michael Kaszycki,
                                                300 airplane presents positive and
                                                                                                        contained herein. Therefore, because a                Assistant Manager, Transport Airplane
                                                negative pitch attitude soft limits. After
                                                                                                        delay would affect the certification of               Directorate, Aircraft Certification Service.
                                                surpassing the established limits set at
                                                                                                        the airplane, the FAA has determined                  [FR Doc. 2017–05200 Filed 3–15–17; 8:45 am]
                                                30° and ¥15°, the airplane presents a
                                                                                                        that prior public notice and comment                  BILLING CODE 4910–13–P
                                                natural tendency to return (positive
                                                                                                        are unnecessary and impracticable, and
                                                stability) to within these limits when
                                                                                                        good cause exists for adopting these
                                                pitch control is released.
                                                  2. Bank Limiting Function (Spiral                     special conditions upon publication in                DEPARTMENT OF TRANSPORTATION
                                                Stability and Roll Limiting):                           the Federal Register. The FAA is
                                                                                                        requesting comments to allow interested               Federal Aviation Administration
                                                  While in normal mode at speeds up
                                                to VMO/MMO (maximum operating limit                     persons to submit views that may not
                                                                                                        have been submitted in response to the                14 CFR Part 27
                                                speed), the ERJ 190–300 airplane
                                                presents neutral stability up to 33° bank               prior opportunities for comment                       [Docket No. FAA–2017–0167; Special
                                                angle. Above 33°, positive spiral                       described above.                                      Conditions No. 27–032–SC]
                                                stability is introduced; however, there is              List of Subjects in 14 CFR Part 25
                                                no bank angle hard limit. When                                                                                Special Conditions: Robinson
                                                overspeed protection is engaged,                          Aircraft, Aviation safety, Reporting                Helicopter Company Model R22 BETA
                                                positive spiral stability is provided in                and recordkeeping requirements.                       Helicopter; Installation of Helitrak
                                                the range of ±33° and a bank angle hard                   The authority citation for these                    Autopilot System
                                                limit (non-overridable) is set at that                  special conditions is as follows:                     AGENCY:  Federal Aviation
                                                bank angle.                                               Authority: 49 U.S.C. 106(g), 40113, 44701,          Administration (FAA), DOT.
jstallworth on DSK7TPTVN1PROD with RULES




                                                  3. High-Speed Limiting Function                       44702, 44704.                                         ACTION: Final special conditions; request
                                                (Overspeed Protection):                                                                                       for comments.
                                                  While in normal mode, the overspeed                   The Special Conditions
                                                protection function prevents pilots from                  Accordingly, pursuant to the                        SUMMARY:   These special conditions are
                                                exceeding the airplane maximum design                   authority delegated to me by the                      issued for the Robinson Helicopter
                                                speeds by providing strong positive                     Administrator, the following special                  Company (Robinson) Model R22 BETA
                                                stability at and above VMO/MMO, and                     conditions are issued as part of the type             helicopter. This helicopter as modified


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Document Created: 2017-03-16 02:18:31
Document Modified: 2017-03-16 02:18:31
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionRules and Regulations
ActionFinal special conditions; request for comments.
DatesThis action is effective on Embraer S.A. on March 16, 2017. We must receive your comments by May 1, 2017.
ContactJoe Jacobsen, FAA, Airplane and Flight Crew Interface Branch, ANM-111, Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind Avenue SW., Renton, Washington 98057-3356; telephone 425-227-2011; facsimile 425-227-1149.
FR Citation82 FR 13961 
CFR AssociatedAircraft; Aviation Safety and Reporting and Recordkeeping Requirements

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