[Federal Register Volume 77, Number 224 (Tuesday, November 20, 2012)]
[Proposed Rules]
[Pages 69568-69569]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-28131]
========================================================================
Proposed Rules
Federal Register
________________________________________________________________________
This section of the FEDERAL REGISTER contains notices to the public of
the proposed issuance of rules and regulations. The purpose of these
notices is to give interested persons an opportunity to participate in
the rule making prior to the adoption of the final rules.
========================================================================
Federal Register / Vol. 77, No. 224 / Tuesday, November 20, 2012 /
Proposed Rules
[[Page 69568]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 25
[Docket No. FAA-2012-1236; Notice No. 25-12-14-SC]
Special Conditions: Bombardier Aerospace, Model BD-500-1A10 and
BD-500-1A11 Airplanes; Sidestick Controllers
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed special conditions.
-----------------------------------------------------------------------
SUMMARY: This action proposes special conditions for the Bombardier
Aerospace Model BD-500-1A10 and BD-500-1A11 airplanes. These airplanes
will have a novel or unusual design feature, specifically sidestick
controllers designed to be operated with only one hand. The applicable
airworthiness regulations do not contain adequate or appropriate safety
standards for this design feature. These proposed 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: Send your comments on or before January 4, 2013.
ADDRESSES: Send comments identified by docket number [FAA-2012-1236]
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 8 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 the 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: Todd Martin, FAA, Airframe and Cabin
Safety Branch, ANM-115, Transport Airplane Directorate, Aircraft
Certification Service, 1601 Lind Avenue SW., Renton, Washington 98057-
3356; telephone 425-227-1178; facsimile 425-227-1232.
SUPPLEMENTARY INFORMATION:
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 on or before the closing
date for comments. We may change these special conditions based on the
comments we receive.
Background
On December 10, 2009, Bombardier Aerospace applied for a type
certificate for their new Model BD-500-1A10 and BD-500-1A11 airplanes.
The Model BD-500-1A10 and BD-500-1A11 airplanes are swept-wing
monoplanes with pressurized cabins, and they share an identical
supplier base and significant common design elements. The fuselages are
aluminum alloy material, blended double-bubble fuselages, sized for
nominal five-abreast seating. Each airplane's powerplant includes two
under-wing Pratt and Whitney PW1524G ultra-high bypass, geared turbofan
engines. The flight controls are fly-by-wire flight with two passive/
uncoupled sidesticks. Avionics include five landscape primary cockpit
displays. The dimension of the aircraft encompasses a wingspan of 115
feet; height of 37.75 feet; and length of 114.75 feet for the Model BD-
500-1A10 and length of 127 feet for the Model BD-500-1A11. Passenger
capacity is designated as 110 for the Model BD-500-1A10 and 125 for the
Model BD-500-1A11. Maximum takeoff weight is 131,000 pounds for the
Model BD-500-1A10 and 144,000 pounds for the Model BD-500-1A11. Maximum
takeoff thrust is 21,000 pounds for the Model BD-500-1A10 and 23,300
pounds for the Model BD-500-1A11. The range is 5,463 kilometres for
both model airplanes. The maximum operating altitude is 41,000 feet for
both model airplanes.
Bombardier Model BD-500-1A10 and BD-500-1A11 airplanes will be
equipped with a sidestick controller instead of a conventional control
column and wheel. This kind of controller is designed for only one-hand
operation.
The requirement of Title 14, Code of Federal Regulations (14 CFR
25.397(c)), which defines limit pilot forces and torques for
conventional wheel or stick controls, is not adequate for a sidestick
controller. A special condition is necessary to specify the appropriate
loading conditions for this kind of controller.
Type Certification Basis
Under the provisions of 14 CFR 21.17, Bombardier Aerospace must
show that the Model BD-500-1A10 and BD-500-1A11 airplanes meet the
applicable provisions of part 25, as amended by Amendments 25-1 through
25-129 thereto.
If the Administrator finds that the applicable airworthiness
regulations (i.e., 14 CFR part 25) do not contain adequate or
appropriate safety standards
[[Page 69569]]
for the Bombardier Aerospace Model BD-500-1A10 and BD-500-1A11
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 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 Bombardier Aerospace Model BD-500-1A10 and BD-500-1A11
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 and the FAA must issue a finding of regulatory
adequacy under Sec. 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 Bombardier Aerospace Model BD-500-1A10 and BD-500-1A11
airplanes will incorporate the following novel or unusual design
feature: A sidestick controller instead of a conventional control
column and wheel. This kind of controller is designed for one-hand
operation.
Discussion
The Bombardier Aerospace Model BD-500-1A10 and BD-500-1A11
airplanes are equipped with a sidestick controller instead of a
conventional wheel or control stick. This kind of controller is
designed to be operated using only one hand. The requirement of 14 CFR
25.397(c), which defines limit pilot forces and torques for
conventional wheel or stick controls, is not adequate for a sidestick
controller, because pilot forces are applied to sidestick controllers
with only the wrist, not arms. A special condition is necessary to
specify the appropriate loading conditions for a sidestick controller.
These proposed 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
Bombardier Aerospace Model BD-500-1A10 and BD-500-1A11 airplanes.
Should Bombardier Aerospace 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 Bombardier Aerospace Model BD-500-1A10 and BD-500-1A11 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 Proposed Special Conditions
Accordingly, the Federal Aviation Administration (FAA) proposes the
following special conditions as part of the type certification basis
for Model BD-500-1A10 and BD-500-1A11 airplanes by Bombardier
Aerospace:
Limit Pilot Forces for Sidestick Control
In lieu of the pilot forces specified in Sec. 25.397(c), for the
Bombardier Model BD-500-1A10 and BD-500-1A11 airplanes equipped with
sidestick controls designed for forces to be applied by one wrist and
not arms, the limit pilot forces are as follows:
1. For all components between and including the handle and its
control stops.
------------------------------------------------------------------------
Pitch Roll
------------------------------------------------------------------------
Nose up 200 pounds force (lbf)............ Nose Left 100 lbf.
Nose down 200 lbf......................... Nose Right 100 lbf.
------------------------------------------------------------------------
2. For all other components of the sidestick control assembly,
excluding the internal components of the electrical sensor assemblies,
to avoid damage as a result of an in-flight jam.
------------------------------------------------------------------------
Pitch Roll
------------------------------------------------------------------------
Nose up 125 lbf........................... Nose Left 50 lbf.
Nose down 125 lbf......................... Nose Right 50 lbf.
------------------------------------------------------------------------
Issued in Renton, Washington, on November 14, 2012.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2012-28131 Filed 11-19-12; 8:45 am]
BILLING CODE 4910-13-P