83_FR_12306 83 FR 12251 - Special Conditions: Bombardier Inc., Model BD-700-2A12 and BD-700-2A13 Series Airplanes, Flight Envelope Protection: Pitch and Roll Limiting

83 FR 12251 - Special Conditions: Bombardier Inc., Model BD-700-2A12 and BD-700-2A13 Series Airplanes, Flight Envelope Protection: Pitch and Roll Limiting

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 83, Issue 55 (March 21, 2018)

Page Range12251-12252
FR Document2018-05651

These special conditions are issued for the Bombardier Inc. (Bombardier), Model BD-700-2A12 and BD-700-2A13 series airplanes. This airplane will have a novel or unusual design feature when compared to the state of technology envisioned in the applicable airworthiness standards for transport-category airplanes. This design feature is the fly-by-wire electronic flight-control system (EFCS) that will limit pitch and roll functions to prevent the airplane from attaining certain pitch attitudes and roll angles. 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 83 Issue 55 (Wednesday, March 21, 2018) 
[Federal Register Volume 83, Number 55 (Wednesday, March 21, 2018)]
[Rules and Regulations]
[Pages 12251-12252]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2018-05651]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 25

[Docket No. FAA-2018-0201; Special Conditions No. 25-717-SC]


Special Conditions: Bombardier Inc., Model BD-700-2A12 and BD-
700-2A13 Series Airplanes, Flight Envelope Protection: Pitch and Roll 
Limiting

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final special conditions; request for comments.

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SUMMARY: These special conditions are issued for the Bombardier Inc. 
(Bombardier), Model BD-700-2A12 and BD-700-2A13 series airplanes. This 
airplane will have a novel or unusual design feature when compared to 
the state of technology envisioned in the applicable airworthiness 
standards for transport-category airplanes. This design feature is the 
fly-by-wire electronic flight-control system (EFCS) that will limit 
pitch and roll functions to prevent the airplane from attaining certain 
pitch attitudes and roll angles. 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 Bombardier Inc. on March 21, 2018. 
Send your comments by May 7, 2018.

ADDRESSES: Send comments identified by docket number FAA-2018-0201 
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 website, 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).
    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 Section, AIR-671, Transport Standards Branch, Policy and 
Innovation Division, Aircraft Certification Service, 2200 South 216th 
Street, Des Moines, Washington 98198; telephone 206-231-3158; email 
[email protected].

SUPPLEMENTARY INFORMATION: The substance of these special conditions 
has been published in the Federal Register for public comment in 
several prior instances with no substantive comments received. 
Therefore, the FAA has determined that prior public notice and comment 
are unnecessary, and finds that, for the same reason, good cause exists 
for adopting these special conditions 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 May 30, 2012, Bombardier applied for an amendment to Type 
Certificate No. T00003NY to include the new Models BD-700-2A12 and BD-
700-2A13 series airplanes. The BD-700-2A12 and BD-700-2A13 series 
airplanes, are derivatives of the BD-700 currently approved under Type 
Certificate No. T00003NY, and are business jets with a maximum 
certified passenger capacity of 19. The maximum takeoff weight of Model 
BD-700-2A12 airplane is 106,250 lbs. and 104,800 lbs. for the Model BD-
700-2A13 airplane.

Type Certification Basis

    Under the provisions of title 14, Code of Federal Regulations (14 
CFR) 21.101, Bombardier must show that the Model BD-700-2A12 and BD-
700-2A13 airplanes meet the applicable provisions of the regulations 
listed in Type Certificate No. T00003NY or the applicable regulations 
in effect on the date of application for the change except for earlier 
amendments as agreed upon by the FAA.
    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 BD-700-2A12 and BD-700-2A13 
airplanes 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 feature, or should any other 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 Bombardier Model BD-700-2A12 and BD-700-2A13 series 
airplanes 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 Model BD-700-2A12 and BD-700-2A13 airplanes will incorporate 
the

[[Page 12252]]

following novel or unusual design features:
    Fly-by-wire EFCS that will limit pitch and roll functions to 
prevent the airplane from attaining certain pitch attitudes and roll 
angles greater than plus or minus 65 degrees, and introduce positive 
spiral stability introduced for roll angles greater than 30 degrees at 
speeds below VMO/MMO. This system generates the 
actual surface commands that provide for stability augmentation and 
flight control for all three airplane axes (longitudinal, lateral, and 
directional).

Discussion

    Part 25 of title 14 of the CFR does not specifically relate to 
flight characteristics associated with fixed attitude limits. 
Bombardier proposes to implement on the airplanes pitch and roll 
attitude-limiting functions via the EFCS normal mode. This will prevent 
the airplane from attaining certain pitch attitudes and roll angles 
greater than plus or minus 65 degrees. In addition, positive spiral 
stability, introduced for roll angles greater than 30 degrees at speeds 
below VMO/MMO, and spiral stability 
characteristics, must not require excessive pilot strength to achieve 
bank angles up to the bank-angle limit. These special conditions are in 
addition to the requirements of Sec.  25.143. 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 
Model BD-700-2A12 and BD-700-2A13 airplanes. Should Bombardier 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 certain novel or unusual design features 
on one model series 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.

Authority Citation

    Authority: 49 U.S.C. 106(f), 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 Bombardier Model BD-700-2A12 and BD-
700-2A13 series airplanes:
    In addition to Sec.  25.143, the following requirements apply to 
the electronic flight-control system (EFCS) pitch- and roll-limiting 
functions:
    1. 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.
    2. The pitch- and roll-limiting functions must not restrict or 
prevent attaining pitch attitudes necessary for emergency maneuvering, 
or roll angles up to 65 degrees. Spiral stability, which is introduced 
above 30 degrees of 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, 
attitude, or high-speed conditions, are acceptable, as long as they 
allow at least 45 degrees of roll capability.
    3. A lower limit of roll is acceptable beyond the overspeed warning 
if it is possible to recover the airplane to the normal flight envelope 
without undue difficulty or delay.

    Issued in Des Moines, Washington.
Victor Wicklund,
Manager, Transport Standards Branch, Policy and Innovation Division, 
Aircraft Certification Service.
[FR Doc. 2018-05651 Filed 3-20-18; 8:45 am]
BILLING CODE 4910-13-P

Federal Register / Vol. 83, No. 55 / Wednesday, March 21, 2018 / Rules and Regulations 12251 Issued in Des Moines, Washington. Ground Floor at 1200 New Jersey Background Victor Wicklund, Avenue SE, Washington, DC, between 9 On May 30, 2012, Bombardier applied Manager, Transport Standards Branch, Policy a.m. and 5 p.m., Monday through for an amendment to Type Certificate and Innovation Division, Aircraft Friday, except Federal holidays. No. T00003NY to include the new Certification Service. • Fax: Fax comments to Docket Models BD–700–2A12 and BD–700– [FR Doc. 2018–05650 Filed 3–20–18; 8:45 am] Operations at 202–493–2251. 2A13 series airplanes. The BD–700– BILLING CODE 4910–13–P Privacy: The FAA will post all 2A12 and BD–700–2A13 series comments it receives, without change, airplanes, are derivatives of the BD–700 to http://www.regulations.gov/, currently approved under Type DEPARTMENT OF TRANSPORTATION including any personal information the Certificate No. T00003NY, and are commenter provides. Using the search business jets with a maximum certified Federal Aviation Administration function of the docket website, anyone passenger capacity of 19. The maximum can find and read the electronic form of takeoff weight of Model BD–700–2A12 14 CFR Part 25 all comments received into any FAA airplane is 106,250 lbs. and 104,800 lbs. [Docket No. FAA–2018–0201; Special docket, including the name of the for the Model BD–700–2A13 airplane. Conditions No. 25–717–SC] individual sending the comment (or signing the comment for an association, Type Certification Basis Special Conditions: Bombardier Inc., business, labor union, etc.). DOT’s Under the provisions of title 14, Code Model BD–700–2A12 and BD–700– complete Privacy Act Statement can be of Federal Regulations (14 CFR) 21.101, 2A13 Series Airplanes, Flight Envelope found in the Federal Register published Bombardier must show that the Model Protection: Pitch and Roll Limiting on April 11, 2000 (65 FR 19477–19478). BD–700–2A12 and BD–700–2A13 AGENCY: Federal Aviation Docket: Background documents or airplanes meet the applicable provisions Administration (FAA), DOT. comments received may be read at of the regulations listed in Type ACTION: Final special conditions; request http://www.regulations.gov/ at any time. Certificate No. T00003NY or the for comments. Follow the online instructions for applicable regulations in effect on the accessing the docket or go to Docket date of application for the change except SUMMARY: These special conditions are Operations in Room W12–140 of the for earlier amendments as agreed upon issued for the Bombardier Inc. West Building Ground Floor at 1200 by the FAA. (Bombardier), Model BD–700–2A12 and New Jersey Avenue SE, Washington, If the Administrator finds that the BD–700–2A13 series airplanes. This DC, between 9 a.m. and 5 p.m., Monday applicable airworthiness regulations airplane will have a novel or unusual through Friday, except Federal holidays. (i.e., 14 CFR part 25) do not contain design feature when compared to the adequate or appropriate safety standards FOR FURTHER INFORMATION CONTACT: Joe state of technology envisioned in the for the Model BD–700–2A12 and BD– applicable airworthiness standards for Jacobsen, FAA, Airplane and Flight Crew Interface Section, AIR–671, 700–2A13 airplanes because of a novel transport-category airplanes. This or unusual design feature, special design feature is the fly-by-wire Transport Standards Branch, Policy and Innovation Division, Aircraft conditions are prescribed under the electronic flight-control system (EFCS) provisions of § 21.16. that will limit pitch and roll functions Certification Service, 2200 South 216th Street, Des Moines, Washington 98198; Special conditions are initially to prevent the airplane from attaining applicable to the model for which they certain pitch attitudes and roll angles. telephone 206–231–3158; email Joe.Jacobsen@faa.gov. are issued. Should the type certificate The applicable airworthiness for that model be amended later to regulations do not contain adequate or SUPPLEMENTARY INFORMATION: The include any other model that appropriate safety standards for this substance of these special conditions incorporates the same novel or unusual design feature. These special conditions has been published in the Federal design feature, or should any other contain the additional safety standards Register for public comment in several model already included on the same that the Administrator considers prior instances with no substantive type certificate be modified to necessary to establish a level of safety comments received. Therefore, the FAA incorporate the same novel or unusual equivalent to that established by the has determined that prior public notice design feature, these special conditions existing airworthiness standards. and comment are unnecessary, and would also apply to the other model DATES: This action is effective on finds that, for the same reason, good under § 21.101. Bombardier Inc. on March 21, 2018. cause exists for adopting these special In addition to the applicable Send your comments by May 7, 2018. conditions upon publication in the airworthiness regulations and special ADDRESSES: Send comments identified Federal Register. conditions, the Bombardier Model BD– by docket number FAA–2018–0201 Comments Invited 700–2A12 and BD–700–2A13 series using any of the following methods: airplanes must comply with the fuel- • Federal eRegulations Portal: Go to We invite interested people to take vent and exhaust-emission requirements http://www.regulations.gov/ and follow part in this rulemaking by sending of 14 CFR part 34, and the noise- the online instructions for sending your written comments, data, or views. The certification requirements of 14 CFR comments electronically. most helpful comments reference a part 36. • Mail: Send comments to Docket specific portion of the special The FAA issues special conditions, as Operations, M–30, U.S. Department of conditions, explain the reason for any defined in 14 CFR 11.19, in accordance sradovich on DSK3GMQ082PROD with RULES Transportation (DOT), 1200 New Jersey recommended change, and include with § 11.38, and they become part of Avenue SE, Room W12–140, West supporting data. the type certification basis under Building Ground Floor, Washington, We will consider all comments we § 21.101. DC, 20590–0001. receive by the closing date for • Hand Delivery or Courier: Take comments. We may change these special Novel or Unusual Design Features comments to Docket Operations in conditions based on the comments we The Model BD–700–2A12 and BD– Room W12–140 of the West Building receive. 700–2A13 airplanes will incorporate the VerDate Sep<11>2014 16:29 Mar 20, 2018 Jkt 244001 PO 00000 Frm 00005 Fmt 4700 Sfmt 4700 E:\FR\FM\21MRR1.SGM 21MRR1

12252 Federal Register / Vol. 83, No. 55 / Wednesday, March 21, 2018 / Rules and Regulations following novel or unusual design The Special Conditions BD–700–2A13 airplanes. These features: Accordingly, pursuant to the airplanes will have a novel or unusual Fly-by-wire EFCS that will limit pitch authority delegated to me by the design feature when compared to the and roll functions to prevent the Administrator, the following special state of technology envisioned in the airplane from attaining certain pitch conditions are issued as part of the type airworthiness standards for transport- attitudes and roll angles greater than certification basis for Bombardier Model category airplanes. This design feature plus or minus 65 degrees, and introduce BD–700–2A12 and BD–700–2A13 series is a new control architecture and a full positive spiral stability introduced for airplanes: digital-flight-control system that roll angles greater than 30 degrees at In addition to § 25.143, the following provides comprehensive flight-envelope speeds below VMO/MMO. This system requirements apply to the electronic protections. The applicable generates the actual surface commands flight-control system (EFCS) pitch- and airworthiness regulations do not contain that provide for stability augmentation roll-limiting functions: adequate or appropriate safety standards and flight control for all three airplane 1. The pitch-limiting function must for this design feature. These special axes (longitudinal, lateral, and not impede normal maneuvering for conditions contain the additional safety pitch angles up to the maximum standards that the Administrator directional). required for normal maneuvering, considers necessary to establish a level Discussion including a normal, all-engines- of safety equivalent to that established operating takeoff, plus a suitable margin by the existing airworthiness standards. Part 25 of title 14 of the CFR does not DATES: This action is effective on specifically relate to flight to allow for satisfactory speed control. 2. The pitch- and roll-limiting Bombardier Inc. on March 21, 2018. characteristics associated with fixed Send your comments by May 7, 2018. attitude limits. Bombardier proposes to functions must not restrict or prevent attaining pitch attitudes necessary for ADDRESSES: Send comments identified implement on the airplanes pitch and emergency maneuvering, or roll angles by docket number FAA–2018–0228 roll attitude-limiting functions via the up to 65 degrees. Spiral stability, which using any of the following methods: EFCS normal mode. This will prevent is introduced above 30 degrees of roll • Federal eRegulations Portal: Go to the airplane from attaining certain pitch angle, must not require excessive pilot http://www.regulations.gov/and follow attitudes and roll angles greater than strength to achieve these roll angles. the online instructions for sending your plus or minus 65 degrees. In addition, Other protections, which further limit comments electronically. positive spiral stability, introduced for • Mail: Send comments to Docket the roll capability under certain extreme roll angles greater than 30 degrees at Operations, M–30, U.S. Department of angle-of-attack, attitude, or high-speed speeds below VMO/MMO, and spiral Transportation (DOT), 1200 New Jersey conditions, are acceptable, as long as stability characteristics, must not Avenue SE, Room W12–140, West they allow at least 45 degrees of roll require excessive pilot strength to Building Ground Floor, Washington, DC capability. achieve bank angles up to the bank- 20590–0001. 3. A lower limit of roll is acceptable angle limit. These special conditions are • Hand Delivery or Courier: Take beyond the overspeed warning if it is in addition to the requirements of comments to Docket Operations in possible to recover the airplane to the § 25.143. These special conditions Room W12–140 of the West Building normal flight envelope without undue contain the additional safety standards Ground Floor at 1200 New Jersey difficulty or delay. that the Administrator considers Avenue SE, Washington, DC, between 9 necessary to establish a level of safety Issued in Des Moines, Washington. a.m. and 5 p.m., Monday through equivalent to that established by the Victor Wicklund, Friday, except Federal holidays. existing airworthiness standards. Manager, Transport Standards Branch, Policy • Fax: Fax comments to Docket and Innovation Division, Aircraft Applicability Operations at 202–493–2251. Certification Service. Privacy: The FAA will post all [FR Doc. 2018–05651 Filed 3–20–18; 8:45 am] As discussed above, these special comments it receives, without change, conditions are applicable to the Model BILLING CODE 4910–13–P to http://www.regulations.gov/, BD–700–2A12 and BD–700–2A13 including any personal information the airplanes. Should Bombardier apply at a commenter provides. Using the search later date for a change to the type DEPARTMENT OF TRANSPORTATION function of the docket website, anyone certificate to include another model Federal Aviation Administration can find and read the electronic form of incorporating the same novel or unusual all comments received into any FAA design feature, these special conditions 14 CFR Part 25 docket, including the name of the would apply to that model as well. individual sending the comment (or [Docket No. FAA–2018–0228; Special signing the comment for an association, Conclusion Conditions No. 25–719–SC] business, labor union, etc.). DOT’s This action affects only certain novel complete Privacy Act Statement can be Special Conditions: Bombardier Inc. or unusual design features on one model found in the Federal Register published BD–700–2A12 and BD–700–2A13 series of airplanes. It is not a rule of on April 11, 2000 (65 FR 19477–19478). Airplane; Flight-Envelope Protection: general applicability. Docket: Background documents or General Limiting Requirements comments received may be read at List of Subjects in 14 CFR Part 25 AGENCY: Federal Aviation http://www.regulations.gov/ at any time. sradovich on DSK3GMQ082PROD with RULES Administration (FAA), DOT. Follow the online instructions for Aircraft, Aviation safety, Reporting accessing the docket or go to Docket and recordkeeping requirements. ACTION: Final special conditions; request for comments. Operations in Room W12–140 of the Authority Citation West Building Ground Floor at 1200 SUMMARY: These special conditions are New Jersey Avenue SE, Washington, Authority: 49 U.S.C. 106(f), 106(g), 40113, issued for the Bombardier Inc. DC, between 9 a.m. and 5 p.m., Monday 44701, 44702, 44704. (Bombardier) Model BD–700–2A12 and through Friday, except Federal holidays. VerDate Sep<11>2014 16:29 Mar 20, 2018 Jkt 244001 PO 00000 Frm 00006 Fmt 4700 Sfmt 4700 E:\FR\FM\21MRR1.SGM 21MRR1


Document Created: 2018-03-21 00:45:47
Document Modified: 2018-03-21 00:45:47
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 Bombardier Inc. on March 21, 2018. Send your comments by May 7, 2018.
ContactJoe Jacobsen, FAA, Airplane and Flight Crew Interface Section, AIR-671, Transport Standards Branch, Policy and Innovation Division, Aircraft Certification Service, 2200 South 216th Street, Des Moines, Washington 98198; telephone 206-231-3158; email [email protected]
FR Citation83 FR 12251 
CFR AssociatedAircraft; Aviation Safety and Reporting and Recordkeeping Requirements
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