[Federal Register Volume 79, Number 250 (Wednesday, December 31, 2014)]
[Rules and Regulations]
[Pages 78694-78696]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2014-30562]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 29
[Docket No. FAA-2014-1090; Special Conditions No. 29-037-SC]
Special Conditions: Airbus Helicopters Deutschland GmbH Model
MBB-BK117D-2 Helicopters; Use of 30-Minute Power Rating
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 Airbus Helicopters
Deutschland GmbH Model MBB-BK117 D-2 helicopter. This model helicopter
will have the novel or unusual design feature of a 30-minute power
rating, generally intended to be used for hovering at increased power
for search and rescue missions. 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 Airbus Helicopters Deutschland GmbH
Model MBB-BK117D-2 Helicopters on December 19, 2014.
We must receive your comments by March 2, 2015.
ADDRESSES: Send comments identified by docket number FAA-2014-1090
using any of the following methods:
[ssquf] Federal eRegulations Portal: Go to http://www.regulations.gov and follow the online instructions for sending your
comments electronically.
[ssquf] 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.
[ssquf] Hand Delivery of 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.
[ssquf] Fax: Fax comments to Docket Operations at 202-493-2251.
Privacy: The FAA will post all comments it receives, without
change, to http://regulations.gov, including any personal information
the commenter provides. Using the search function of the docket Web
site, anyone can find
[[Page 78695]]
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: You can read the background documents or comments received
at http://www.regulations.gov. Follow the online instructions for
accessing the docket or go to the Docket Operations in Room @12-140 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: Rao Edupuganti, Rotorcraft Standards
Staff, ASW-111, Rotorcraft Directorate, Aircraft Certification Service,
2601 Meacham Blvd., Fort Worth, Texas 76137; telephone (817) 222-4389;
email [email protected].
SUPPLEMENTARY INFORMATION:
Reason for No Prior Notice and Comment Before Adoption
The FAA has determined that notice and opportunity for public
comment are impractical and contrary to the public interest because the
issuance of a design approval would significantly delay delivery of the
affected aircraft. Therefore, we find that good cause exists for making
these special conditions effective upon issuance.
Comments Invited
While we did not precede this with a notice of proposed special
conditions, 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 will consider comments filed late if it is possible to do
so without incurring expense or delay. We may change these special
conditions based on the comments we receive.
Background and Discussion
On December 21, 2009, Airbus Helicopters Deutschland GmbH applied
to amend Type Certificate No. H13EU to include the new Model MBB-BK117
D-2. The MBB-BK117 D-2, which is a derivative of the MBB-BK117 C-2
currently approved under Type Certificate No. H13EU, is a Transport
Category, 14 CFR part 29, twin engine conventional helicopter designed
for civil operations. It is certificated with Category A performance
and for day and night operation under visual and instrument flight
rules. It is powered by two Turbomeca Arriel 2E engines with dual
channel Full Authority Digital Engine Control systems and has four main
rotor blades and a maximum gross weight of 8,046 pounds. It has an
integrated modular avionics suite with three 6x8 inch multi-function
displays termed the Common Integrated Global Avionics for Light
Helicopters.
Airbus Helicopters Deutschland GmbH proposes that the model MBB-
BK117 D-2 use a novel and unusual design feature, which is a 30-minute
power rating, identified in the Turbomeca Arriel 2E Engine Special
Conditions No. 33-009-SC. 14 CFR 1.1 defines ``rated takeoff power'' as
limited in use to no more than 5 minutes for takeoff operation. Thus,
the use of takeoff power for 30 minutes will require special
airworthiness standards, known as special conditions, to address the
use of this 30-minute power rating and its effects on the rotorcraft.
These special conditions will add requirements to the existing
airworthiness standards in 14 CFR 29.1049 (Hover cooling test
procedures), Sec. 29.1305 (Powerplant instruments), and Sec. 29.1521
(Powerplant limitations).
The following is a summary of the final special conditions:
In addition to the requirements of Sec. 29.1049 (Hover cooling
test procedures), the aircraft cooling effects due to use of the 30-
minute power rating versus the Takeoff (5-minute) rating must be
accounted for in the testing.
In addition to the requirements of Sec. 29.1305, Powerplant
Instruments, since this new 30-minute power rating has a 30-minute time
limit associated with its use, the pilot must have the means to
identify:
When the rated engine power level is achieved,
When the event begins, and
When the time interval expires.
In addition to the requirements of Sec. 29.1521, Powerplant
Limitations, a new 30-minute rating must be limited to no more than 30
minutes per use. This new rating will allow use of power above maximum
continuous power (MCP) for 30 minutes.
Furthermore, the Model MBB-BK117 D-2 rotorcraft flight manual must
include limitations on use of the 30-minute power rating to state that
continuous use above MCP up to takeoff power is limited to 30 minutes.
Type Certification Basis
Under 14 CFR 21.101, Airbus Helicopters Deutschland GmbH must show
that the MBB-BK117 D-2 model helicopter meets the applicable provisions
of the regulations incorporated by reference in Type Certificate No.
H13EU or the applicable regulations in effect on the date of
application for the change to the type certificate. The regulations
incorporated by reference in the type certificate are commonly referred
to as the ``original type certification basis.'' The regulations
incorporated by reference in Type Certificate No. H13EU are as follows:
1. 14 CFR 21.29 and 14 CFR 29 effective February 1, 1965 plus
Amendments 29-1 through 29-40 for the new or changed parts with respect
to the MBB-BK117 C-2 identified in the document ETYC 1183/09-MHa,
supplemented with requirements from other amendments listed below.
2. 14 CFR 29 requirements with amendment through 29-51 for: 29.25,
29.59, 29.62, 29.67, 29.77, 29.81, 29.85, 29.143, 29.173, 29.175,
29.177, 29.351, 29.397, 29.562, 29.602, 29.865, 29.923, 29.1317,
29.1323, 29.1329, 29.1351, 29.1359, 29.1457, 29.1459, 29.1521, 29.1587,
B29.5, B29.7
3. Equivalent Level Of Safety:
(a) 14 CFR 29.807 (a)(4) Emergency exits
(b) 14CFR 29.1305, 29.1351(b)(6), 29.1435(a)(3) Part Time Display
of Vehicle Parameters
(c) 14 CFR 29.1545(b)(4), 29.1549(b) Airspeed & Powerplant
indication green marking
4. Environmental Standards:
(a) 14 CFR 36 Appendix H at amendment 36-25
5. The main differences between the MBB-BK117 C-2 and the MBB-BK117 D-2
are as follows:
(a) Installation of Turbomeca Arriel 2E engines with FADEC control
(b) New tail section including composite structure and fanned tail
rotor (FENESTRON) with composite blades
(c) New cockpit indication system using integrated modular
avionics.
(d) Auto Flight System as a standard configuration of the MBB-BK117
D-2
(e) Main gearbox modifications to support 30 minute run-dry
capability
(f) Maximum take-off weight increased to 3650 kg
In addition, if the regulations incorporated by reference do not
provide adequate standards regarding
[[Page 78696]]
the change, the applicant must comply with certain regulations in
effect on the date of application for the change. The FAA has
determined that the Model MBB-BK117 D-2 must also comply with 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.''
Regulatory Basis for Special Conditions
The Administrator has determined that the applicable airworthiness
regulations (that is, 14 CFR part 29) do not contain adequate or
appropriate safety standards for the MBB-BK117 D22 model helicopter
because of a novel or unusual design feature. Therefore, special
conditions are prescribed under the provisions of 14 CFR 21.16.
The FAA issues special conditions, as defined in Sec. 11.19, in
accordance with Sec. 11.38, and they become part of the type
certification basis under Sec. 21.101.
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, the special conditions would also apply to the
other model.
Novel or Unusual Design Features
The MBB-BK117 D-2 model helicopter will incorporate the following
novel or unusual design feature:
A 30-minute power rating.
Applicability
These special conditions are applicable to the Airbus Helicopters
Deutschland GmbH Model MBB-BK117 D2 helicopter. Should Airbus
Helicopters Deutschland GmbH apply at a later date for an amendment 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 the Airbus Helicopters Deutschland GmbH Model MBB-BK117 D-2
helicopter. It is not a rule of general applicability.
List of Subjects in 14 CFR Part 29
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 Airbus Helicopters Deutschland GmbH
Model MBB-BK117 D-2 helicopters. Unless stated otherwise, all
requirements in Sec. Sec. 29.1049, 29.1305 and 29.1521 remain
unchanged.
Section 29.1049 Hover cooling test procedures. In addition to the
requirements of this section, for rotorcraft with a 30-minute power
rating, the hovering cooling provisions at the 30-minute power rating
must be shown--
(a) At maximum weight or at the greatest weight at which the
rotorcraft can hover (if less), at sea level, with the power required
to hover but not more than the 30-minute power, in the ground effect in
still air, until at least 5 minutes after the occurrence of the highest
temperature recorded, or until the continuous time limit of the 30-
minute power rating if the highest temperature recorded is not
stabilized before.
(b) At maximum weight and at the altitude resulting in zero rate of
climb for this configuration, until at least 5 minutes after the
occurrence of the highest temperature recorded, or until the continuous
time limit of the 30-minute power rating if the highest temperature
recorded is not stabilized before.
Section 29.1305 Powerplant instruments, at Amendment 29-40. In
addition to the requirements of this section, a means must be provided
to indicate to the pilot when the engine is at the 30-minute power
level, when the event begins, and when the time interval expires.
Section 29.1521 Powerplant limitations, at Amendment 29-41. In
addition to the requirements of this section, use of the 30-minute
power must be limited to no more than 30 minutes per use. The use of
the 30-minute power must also be limited by:
(1) The maximum rotational speed, which may not be greater than--
(i) The maximum value determined by the rotor design; or
(ii) The maximum value demonstrated during the type tests;
(2) The maximum allowable turbine inlet or turbine outlet gas
temperature (for turbine engines);
(3) The maximum allowable power or torque for each engine,
considering the power input limitations of the transmission with all
engines operating;
(4) The maximum allowable power or torque for each engine
considering the power input limitations of the transmission with one
engine inoperative;
(5) The time limit for the use of the power corresponding to the
limitations established in paragraphs (1) through (4) above; and
(6) The maximum allowable engine and transmission oil temperatures,
if the time limit established in paragraph (5) above exceeds 2 minutes.
Issued in Fort Worth, Texas, on December 19, 2014.
Lance T. Gant
Acting Directorate Manager, Rotorcraft Directorate, Aircraft
Certification Service.
[FR Doc. 2014-30562 Filed 12-30-14; 8:45 am]
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