Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Flight Envelope Protection: Pitch and Roll Limiting Functions, 14005-14007 [2013-04855]

Download as PDF Federal Register / Vol. 78, No. 42 / Monday, March 4, 2013 / Rules and Regulations Federal Assistance Programs The title and number of the Federal assistance programs, as found in the Catalog of Federal Domestic Assistance, to which this rule applies are: 10.406—Farm Operating Loans 10.407—Farm Ownership Loans Paperwork Reduction Act of 1995 The provisions in this interim rule require no revisions to the information collection requirements that were previously approved by OMB under control number 0560–0155. E-Government Act Compliance FSA is committed to complying with the E-Government Act, to promote the use of the Internet and other information technologies to provide increased opportunities for citizen access to Government information and services, and for other purposes. List of Subjects 7 CFR Part 761 Accounting, Loan programs— agriculture, Rural areas. 7 CFR Part 762 Agriculture, Credit, Loan programs— agriculture, Reporting and recordkeeping requirements. For the reasons set out in the preamble, this rule amends 7 CFR parts 761 and 762 as follows: PART 761—GENERAL PROGRAM ADMINISTRATION 1. The authority citation for part 761 continues to read as follows: ■ Authority: 5 U.S.C. 301 and 7 U.S.C. 1989. 2. Amend § 761.2 as follows: a. In paragraph (a), add, in alphabetical order, the abbreviation ‘‘LIBOR’’ to read as follows, and ■ b. In paragraph (b), remove the definition of ‘‘average agricultural loan customer’’. ■ ■ § 761.2 Abbreviations and definitions. * * * * (a) * * * LIBOR London Interbank Offered Rate. * * * * * wreier-aviles on DSK5TPTVN1PROD with RULES * b. Redesignate paragraphs (a)(4) and (a)(5) as (a)(5) and (a)(6), and ■ c. Add new paragraph (a)(4) to read as set forth below: ■ § 762.124 and fees. Interest rate, terms, charges, (a) * * * (2) If a variable rate is used, it must be tied to an index or rate specifically agreed to between the lender and borrower in the loan instruments and the rate adjustments must be in accordance with normal practices of the lender for unguaranteed loans. Upon request, the lender must provide the Agency with copies of its written rate adjustment practices. (3) At the time of loan closing or loan restructuring, the interest rate on both the guaranteed portion and the unguaranteed portion of a fixed or variable rate OL or FO loan may not exceed the following, as applicable: (i) For lenders using risk-based pricing practices, the risk tier at least one tier lower (representing lower risk) than that borrower would receive without a guarantee. The lender must provide the Agency with copies of its written pricing practices, upon request. (ii) For lenders not using risk-based pricing practices, for variable rate loans or fixed rate loans with rates fixed for less than five years, 650 basis points (6.5 percentage points) above the 3-month LIBOR. (iii) For lenders not using risk-based pricing practices, for loans with rates fixed for five or more years, 550 basis points (5.5 percentage points) above the 5-year Treasury note rate. (4) In the event the 3-month LIBOR is below 2 percent, the maximum rates specified in paragraph (a)(3) of this section do not apply. In that case, at the time of loan closing or loan restructuring, the interest rate on both the guaranteed portion and the unguaranteed portion of an OL or FO loan may not exceed 750 basis points above the 3-month LIBOR for variable rate loans and 650 basis points above the 5-year Treasury rate for fixed rate loans. * * * * * PART 762—GUARANTEED FARM LOANS ■ 3. The authority citation for part 762 continues to read as follows: § 762.150 ■ Authority: 5 U.S.C. 301, 7 U.S.C. 1989. 4. Amend § 762.124 as follows: a. Revise paragraphs (a)(2) and (a)(3) to read as set forth below, ■ ■ VerDate Mar<15>2010 15:31 Mar 01, 2013 Jkt 229001 5. Amend § 762.150 by revising paragraph (g) to read as follows: Interest assistance program. * * * * * (g) Rate of interest. The lender interest rate will be set according to § 762.124(a). * * * * * PO 00000 Frm 00007 Fmt 4700 Sfmt 4700 14005 Signed on February 12, 2013. Juan M. Garcia, Administrator, Farm Service Agency. [FR Doc. 2013–04930 Filed 3–1–13; 8:45 am] BILLING CODE 3410–05–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 25 [Docket No. FAA–2012–1211; Special Conditions No. 25–486–SC] Special Conditions: Embraer S.A., Model EMB–550 Airplanes; Flight Envelope Protection: Pitch and Roll Limiting Functions Federal Aviation Administration (FAA), DOT. ACTION: Final special conditions. AGENCY: These special conditions are issued for the Embraer S.A. Model EMB–550 airplane. This airplane will have a novel or unusual design feature associated with pitch and roll limiting functions, specifically an electronic flight control system which contains flyby-wire control laws, including envelope protections. 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: Effective Date: April 3, 2013. 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: SUMMARY: Background On May 14, 2009, Embraer S.A. applied for a type certificate for their new Model EMB–550 airplane. The Model EMB–550 airplane is the first of a new family of jet airplanes designed for corporate flight, fractional, charter, and private owner operations. The aircraft has a conventional configuration with a low wing and T-tail empennage. The primary structure is metal with composite empennage and control surfaces. The Model EMB–550 airplane is designed for 8 passengers, with a maximum of 12 passengers. It is equipped with two Honeywell E:\FR\FM\04MRR1.SGM 04MRR1 14006 Federal Register / Vol. 78, No. 42 / Monday, March 4, 2013 / Rules and Regulations HTF7500–E medium bypass ratio turbofan engines mounted on aft fuselage pylons. Each engine produces approximately 6,540 pounds of thrust for normal takeoff. The primary flight controls consist of hydraulically powered fly-by-wire elevators, aileron and rudder, controlled by the pilot or copilot sidestick. The airworthiness standards in Title 14, Code of Federal Regulations (14 CFR) part 25 do not specifically relate to flight characteristics associated with fixed attitude limits. Embraer S.A. will implement pitch and roll attitude protection functions through the normal modes of the electronic flight control system that will provide speed stability for high and low pitch angles. These functions also provide strong spiral stability for roll angles at high bank angles. In addition, bank angle limiting is introduced at speeds greater than VMO/MMO, up to VDF/MDF. wreier-aviles on DSK5TPTVN1PROD with RULES Type Certification Basis Under the provisions of 14 CFR 21.17, Embraer S.A. must show that the Model EMB–550 airplane meets the applicable provisions of part 25, as amended by Amendments 25–1 through 25–127 thereto. 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 Model EMB–550 airplane because of a novel or unusual design feature, special conditions are prescribed under the provisions of § 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 or similar novel or unusual design feature, the special conditions would also apply to the other model under § 21.101. In addition to the applicable airworthiness regulations and special conditions, the Model EMB–550 airplane 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 and the FAA must issue a finding of regulatory adequacy under section 611 of Public Law 92–574, the ‘‘Noise Control Act of 1972.’’ The FAA issues special conditions, as defined in 14 CFR 11.19, in accordance with § 11.38, and they become part of the type-certification basis under § 21.17(a)(2). VerDate Mar<15>2010 15:31 Mar 01, 2013 Jkt 229001 Novel or Unusual Design Features The Model EMB–550 airplane will incorporate the following novel or unusual design feature: An electronic flight control system which contains flyby-wire control laws, including envelope protections, which were not envisioned when part 25 was written. Discussion We expect that high thrust-to-weight ratios will provide the most critical cases for the positive pitch limit. A margin in pitch control must be available to enable speed control in maneuvers such as climb after takeoff and balked landing climb. The pitch limit must not impede likely maneuvering made necessary by collision avoidance efforts. A negative pitch limit must similarly not interfere with collision avoidance capability or with attaining and maintaining speeds near VMO/MMO for emergency descent. Spiral stability must not restrict attaining roll angles up to 65 degrees (i.e., an approximately 2.4g-level turn). This force must not require excessive pilot strength as stated in § 25.143(f). 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. Notice of proposed special conditions No. 25–12–10–SC for the Embraer S.A. Model EMB–550 airplanes was published in the Federal Register on November 20, 2012 (77 FR 69569). We received one comment from Mr. Sokolow, who stated that these types of rules should be generic and not pertain to one model. He said that it splinters the regulations and can lead to abuse. We acknowledge Mr. Sokolow’s concerns about issuing regulations for individual models. In the case of new technlogy or new designs that are not covered in the regulations, the FAA issues special conditions that are applicable to only one model of airplane. The Embraer S.A. Model EMB–550 airplane will have a novel or unusual design feature associated with pitch and roll limiting functions, specifically an electronic flight control system which contains fly-by-wire control laws, including envelope protections. 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 Frm 00008 Fmt 4700 Sfmt 4700 Applicability As discussed above, these special conditions are applicable to the Model EMB–550 airplane. 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, the special conditions would apply to that model as well. Conclusion This action affects only certain novel or unusual design features on one model of airplanes. It is not a rule of general applicability. List of Subjects in 14 CFR Part 25 Discussion of Comments PO 00000 of safety equivalent to that established by the existing airworthiness standards. We agree with the commenter that the FAA should issue general rulemaking to cover general issues that affect many types of airplanes. Currently, the FAA is tasking an Aviation Rulemaking Advisory Committee (ARAC) to address this and other similar requirements for electronic flight control systems (EFCS). The goal is to develop general rules that could be applied to all designs. In the meantime, however, we will continue to issue special conditions to ensure an adequate level of safety for specific EFCS design features. We are adopting the special conditions as proposed. 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 Embraer S.A. Model EMB–550 airplanes. In addition to § 25.143, the following requirements apply: 1. Flight Envelope Protection: 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 degrees with flaps up, or 60 degrees with flaps down. Spiral ■ E:\FR\FM\04MRR1.SGM 04MRR1 Federal Register / Vol. 78, No. 42 / Monday, March 4, 2013 / Rules and Regulations stability, which is introduced above 33 degrees 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 degrees 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. Issued in Renton, Washington, on February 26, 2013. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2013–04855 Filed 3–1–13; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 25 [Docket No. FAA–2012–1292; Special Conditions No. 25–485–SC] Special Conditions: Embraer S.A., Model EMB–550 Airplanes; Electrical/ Electronic Equipment Bay Fire Detection and Smoke Penetration Federal Aviation Administration (FAA), DOT. ACTION: Final special conditions. AGENCY: These special conditions are issued for the Embraer S.A. Model EMB–550 airplane. This airplane will have novel or unusual design features, specifically distributed electrical and electronic equipment bays in pressurized areas of the airplane. Older transport category airplane electrical/ electronic equipment bay installations are located in the lower lobe where the flight crew could determine the origin of smoke or fire by a straightforward airplane flight manual procedure. In distributed electrical/electronic bay installations it is not as straightforward. The FAA has no requirement for smoke and/or fire detection in the electrical/ electronic equipment bays. To ensure effective mitigation of fires, the FAA proposes these special conditions. 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. wreier-aviles on DSK5TPTVN1PROD with RULES SUMMARY: VerDate Mar<15>2010 15:31 Mar 01, 2013 Jkt 229001 DATES: Effective April 3, 2013. FOR FURTHER INFORMATION CONTACT: Robert C. Jones, FAA, Propulsion and Mechanical Systems Branch, ANM–112, Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind Avenue SW., Renton, Washington 98057–3356; telephone 425–227–1234; facsimile 425–227–1149. SUPPLEMENTARY INFORMATION: Background On May 14, 2009, Embraer S.A. applied for a type certificate for their new Model EMB–550 airplane. The Model EMB–550 airplane is the first of a new family of jet airplanes designed for corporate flight, fractional, charter, and private owner operations. The airplane has a conventional configuration with a low wing and T-tail empennage. The primary structure is metal with composite empennage and control surfaces. The Model EMB–550 airplane is designed for 8 passengers, with a maximum of 12 passengers. It is equipped with two Honeywell HTF7500–E medium bypass ratio turbofan engines mounted on aft fuselage pylons. Each engine produces approximately 6,540 pounds of thrust for normal takeoff. The primary flight controls consist of hydraulically powered fly-by-wire elevators, aileron and rudder, controlled by the pilot or copilot sidestick. The Model EMB–550 airplane has electrical/electronic equipment bays distributed throughout the airplane; three of them are in the pressurized area. The current airworthiness requirements do not contain adequate or appropriate safety standards regarding smoke/fire detection and protection against penetration of hazardous quantities of smoke from equipment bays into occupied areas of the airplane for this type of airplane configuration. Type Certification Basis Under the provisions of Title 14, Code of Federal Regulations (14 CFR) 21.17, Embraer S.A. must show that the Model EMB–550 airplane meets the applicable provisions of part 25, as amended by Amendments 25–1 through 25–127 thereto. 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 Model EMB–550 airplane because of a novel or unusual design feature, special conditions are prescribed under the provisions of § 21.16. Special conditions are initially applicable to the model for which they PO 00000 Frm 00009 Fmt 4700 Sfmt 4700 14007 are issued. Should the type certificate for that model be amended later to include any other model that incorporates the same or similar novel or unusual design feature, the special conditions would also apply to the other model under § 21.101. In addition to the applicable airworthiness regulations and special conditions, the Model EMB–550 airplane 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 and the FAA must issue a finding of regulatory adequacy under section 611 of Public Law 92–574, the ‘‘Noise Control Act of 1972.’’ The FAA issues special conditions, as defined in 14 CFR 11.19, in accordance with § 11.38, and they become part of the type-certification basis under § 21.17(a)(2). Novel or Unusual Design Features The Model EMB–550 airplane will incorporate the following novel or unusual design features: Distributed electrical and electronic equipment bays that were not envisioned at the time this rule was made. Discussion In general, smoke and fire detection systems are designed to: • Automatically shut off power to the affected equipment, • If necessary, reconfigure the environmental control systems to control any smoke resulting from a fire or overheat condition, and • Alert the flight crew to the existence of the fire. Most airplanes certified under part 25 have one or two electrical equipment bays located in the lower lobe, adjacent to pressure regulator/outflow valves or vents. If a fire occurs in an electrical equipment bay, any smoke is drawn toward the outflow valves or vents and is discharged from the airplane without entering occupied areas. In the event of a smoke or fire in one of the electrical equipment bays, the procedures to isolate the bay on some airplanes requires the flight crew to use trial and error to determine whether or not the source is in a particular electrical equipment bay. However, with this approach, the flight crew does not know where the fire or smoke is because it is difficult to identify the source, especially during changes of phases of flight (e.g., climbing or descending) or system transients (e.g., changes in the airflow from the environmental control system). This trial-and-error approach may be acceptable for aircraft with no more E:\FR\FM\04MRR1.SGM 04MRR1

Agencies

[Federal Register Volume 78, Number 42 (Monday, March 4, 2013)]
[Rules and Regulations]
[Pages 14005-14007]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2013-04855]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 25

[Docket No. FAA-2012-1211; Special Conditions No. 25-486-SC]


Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Flight 
Envelope Protection: Pitch and Roll Limiting Functions

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final special conditions.

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

SUMMARY: These special conditions are issued for the Embraer S.A. Model 
EMB-550 airplane. This airplane will have a novel or unusual design 
feature associated with pitch and roll limiting functions, specifically 
an electronic flight control system which contains fly-by-wire control 
laws, including envelope protections. 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: Effective Date: April 3, 2013.

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: 

Background

    On May 14, 2009, Embraer S.A. applied for a type certificate for 
their new Model EMB-550 airplane. The Model EMB-550 airplane is the 
first of a new family of jet airplanes designed for corporate flight, 
fractional, charter, and private owner operations. The aircraft has a 
conventional configuration with a low wing and T-tail empennage. The 
primary structure is metal with composite empennage and control 
surfaces. The Model EMB-550 airplane is designed for 8 passengers, with 
a maximum of 12 passengers. It is equipped with two Honeywell

[[Page 14006]]

HTF7500-E medium bypass ratio turbofan engines mounted on aft fuselage 
pylons. Each engine produces approximately 6,540 pounds of thrust for 
normal takeoff. The primary flight controls consist of hydraulically 
powered fly-by-wire elevators, aileron and rudder, controlled by the 
pilot or copilot sidestick.
    The airworthiness standards in Title 14, Code of Federal 
Regulations (14 CFR) part 25 do not specifically relate to flight 
characteristics associated with fixed attitude limits. Embraer S.A. 
will implement pitch and roll attitude protection functions through the 
normal modes of the electronic flight control system that will provide 
speed stability for high and low pitch angles. These functions also 
provide strong spiral stability for roll angles at high bank angles. In 
addition, bank angle limiting is introduced at speeds greater than 
VMO/MMO, up to VDF/MDF.

Type Certification Basis

    Under the provisions of 14 CFR 21.17, Embraer S.A. must show that 
the Model EMB-550 airplane meets the applicable provisions of part 25, 
as amended by Amendments 25-1 through 25-127 thereto.
    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 Model EMB-550 airplane 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 or similar 
novel or unusual design feature, the special conditions would also 
apply to the other model under Sec.  21.101.
    In addition to the applicable airworthiness regulations and special 
conditions, the Model EMB-550 airplane 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 and the FAA must issue a 
finding of regulatory adequacy under section 611 of Public Law 92-574, 
the ``Noise Control Act of 1972.''
    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.  21.17(a)(2).

Novel or Unusual Design Features

    The Model EMB-550 airplane will incorporate the following novel or 
unusual design feature: An electronic flight control system which 
contains fly-by-wire control laws, including envelope protections, 
which were not envisioned when part 25 was written.

Discussion

    We expect that high thrust-to-weight ratios will provide the most 
critical cases for the positive pitch limit. A margin in pitch control 
must be available to enable speed control in maneuvers such as climb 
after takeoff and balked landing climb. The pitch limit must not impede 
likely maneuvering made necessary by collision avoidance efforts. A 
negative pitch limit must similarly not interfere with collision 
avoidance capability or with attaining and maintaining speeds near 
VMO/MMO for emergency descent.
    Spiral stability must not restrict attaining roll angles up to 65 
degrees (i.e., an approximately 2.4g-level turn). This force must not 
require excessive pilot strength as stated in Sec.  25.143(f).
    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.

Discussion of Comments

    Notice of proposed special conditions No. 25-12-10-SC for the 
Embraer S.A. Model EMB-550 airplanes was published in the Federal 
Register on November 20, 2012 (77 FR 69569). We received one comment 
from Mr. Sokolow, who stated that these types of rules should be 
generic and not pertain to one model. He said that it splinters the 
regulations and can lead to abuse.
    We acknowledge Mr. Sokolow's concerns about issuing regulations for 
individual models. In the case of new technlogy or new designs that are 
not covered in the regulations, the FAA issues special conditions that 
are applicable to only one model of airplane. The Embraer S.A. Model 
EMB-550 airplane will have a novel or unusual design feature associated 
with pitch and roll limiting functions, specifically an electronic 
flight control system which contains fly-by-wire control laws, 
including envelope protections. 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.
    We agree with the commenter that the FAA should issue general 
rulemaking to cover general issues that affect many types of airplanes. 
Currently, the FAA is tasking an Aviation Rulemaking Advisory Committee 
(ARAC) to address this and other similar requirements for electronic 
flight control systems (EFCS). The goal is to develop general rules 
that could be applied to all designs. In the meantime, however, we will 
continue to issue special conditions to ensure an adequate level of 
safety for specific EFCS design features.
    We are adopting the special conditions as proposed.

Applicability

    As discussed above, these special conditions are applicable to the 
Model EMB-550 airplane. 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, the special conditions would 
apply to that model as well.

Conclusion

    This action affects only certain novel or unusual design features 
on one model of airplanes. It is not a rule of general applicability.

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

0
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 Embraer S.A. Model EMB-550 airplanes.
    In addition to Sec.  25.143, the following requirements apply:
    1. Flight Envelope Protection: 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 degrees with flaps up, or 60 degrees with flaps 
down. Spiral

[[Page 14007]]

stability, which is introduced above 33 degrees 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 degrees 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.

    Issued in Renton, Washington, on February 26, 2013.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2013-04855 Filed 3-1-13; 8:45 am]
BILLING CODE 4910-13-P

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