Special Conditions: Pratt and Whitney Canada Model PT6C-67E Turboshaft Engine, 56097-56099 [2011-23189]
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Federal Register / Vol. 76, No. 176 / Monday, September 12, 2011 / Rules and Regulations
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[FR Doc. 2011–23033 Filed 9–9–11; 8:45 am]
BILLING CODE 4810–33–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 33
[Docket No. NE133; Special Condition No.
33–010–SC]
Special Conditions: Pratt and Whitney
Canada Model PT6C–67E Turboshaft
Engine
Federal Aviation
Administration (FAA), DOT.
ACTION: Final special conditions.
AGENCY:
These special conditions are
issued for Pratt and Whitney Canada
(PWC) model PT6C–67E engines. The
engine model will have a novel or
unusual design feature which is a 30Minute All Engines Operating (AEO)
power rating. This rating is primarily
intended for high power hovering
operations during search and rescue
SUMMARY:
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56097
missions. The applicable airworthiness
regulations do not contain adequate or
appropriate safety standards for this
design feature. These special conditions
contain the added safety standards that
the Administrator considers necessary
to establish a level of safety equivalent
to that established by the existing
airworthiness standards.
DATES: The effective date of these
special conditions is October 12, 2011.
FOR FURTHER INFORMATION CONTACT: For
technical questions concerning this rule,
contact Marc Bouthillier, ANE–111,
Engine and Propeller Directorate,
Aircraft Certification Service, 12 New
England Executive Park, Burlington,
Massachusetts 01803–5299; telephone
(781) 238–7120; facsimile (781) 238–
7199; e-mail marc.bouthillier@faa.gov.
For legal questions concerning this rule,
contact Vincent Bennett, ANE–7 Engine
and Propeller Directorate, Aircraft
Certification Service, 12 New England
Executive Park, Burlington,
Massachusetts 01803–5299; telephone
(781) 238–7044; facsimile (781) 238–
7055; e-mail vincent.bennett@faa.gov.
SUPPLEMENTARY INFORMATION:
Background
On July 10, 2008, PWC applied for
type certification for the model PT6C–
67E turboshaft engine. The PT6C–67E
engine is a derivative of the PT6C–67C
engine which has been type certificated
by the FAA. This engine incorporates a
four-stage axial compressor and a
centrifugal compressor driven by a
single stage high pressure turbine (HPT)
and a two-stage power turbine (PT)
driving a helicopter rotor system via a
direct drive to the engine output shaft.
The control system includes a dual
channel full authority digital electronic
control.
The engine will incorporate a novel or
unusual design feature which is a 30minute AEO power rating. This rating
was requested by the applicant to
support rotorcraft search and rescue
missions that require extensive hover
operations at high power. The use of 30minute AEO power is limited to a
cumulative total of 50 minutes for any
given flight. However, the number of
times the rating can be accessed on any
given flight is not limited, as long as 50
minutes total time per flight is not
exceeded.
The applicable airworthiness
standards do not contain adequate or
appropriate airworthiness standards to
address this design feature. Therefore a
special condition is necessary to apply
additional requirements for rating
definition, instructions for continued
airworthiness (ICA), and endurance
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56098
Federal Register / Vol. 76, No. 176 / Monday, September 12, 2011 / Rules and Regulations
emcdonald on DSK5VPTVN1PROD with RULES
testing. The ICA requirement is
intended to address the unknown nature
of actual rating usage and associated
engine deterioration. The applicant is
expected to make an assessment of the
expected usage and publish ICA’s and
Airworthiness Limitations section limits
in accordance with those assumptions,
such that engine deterioration is not
excessive.
The endurance test requirement of 25
hours operation at 30 minutes AEO is
similar to several special conditions
issued over the past 20 years. Because
the PT6C–67E model has a Continuous
One-Engine-Inoperative (0EI) rating and
limits equal or higher than the 30minute AEO rating, the test time
performed at the Continuous OEI rating
may be credited toward the 25-hour
requirement. However, test time spent at
other rating elements of the test, such as
takeoff or other OEI ratings (that may be
equal to or higher values), may not be
counted toward the 25 hours of required
running.
These special conditions contain the
additional airworthiness standards
necessary to establish a level of safety
equivalent to the level that would result
from compliance with the applicable
standards of airworthiness in effect on
the date of application.
Type Certification Basis
Under the provisions of 14 CFR 21.17
and 21.101(a), PWC must show that the
model PT6C–67E turboshaft engine
meets the provisions of the applicable
regulations in effect on the date of
application, unless otherwise specified
by the FAA. The current certification
basis for this model series is 14 CFR part
33 Amendment 20, however PWC
proposes to demonstrate compliance to
later amendments of part 33 for this
model. In accordance with 14 CFR
21.101(b), the FAA concurs with the
PWC proposal. Therefore, the
certification basis for the PT6C–67E
model turboshaft engine will be part 33,
effective February 1, 1965, as amended
by Amendments 33–1 through 33–30.
If the Administrator finds that the
applicable airworthiness regulations in
part 33, as amended, do not contain
adequate or appropriate safety standards
for the PWC model PT6C–67E
turboshaft engine, because of a novel or
unusual design feature, special
conditions are prescribed under the
provisions of § 21.16.
The FAA issues special conditions, as
defined by 14 CFR 11.19, in accordance
with 14 CFR 11.38, which become part
of the type certification basis in
accordance with § 21.17(b)(2).
Special conditions are initially
applicable to the model for which they
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16:09 Sep 09, 2011
Jkt 223001
are issued. Should the type certificate
for that model be amended later to
include another related model that
incorporates the same or similar novel
or unusual design feature, or should any
other model already included on the
same type certificate be modified to
incorporate the same or similar novel or
unusual design feature, the special
conditions would also apply to the other
model.
Novel or Unusual Design Features
Conclusion
We reviewed the available data and
have determined that air safety and the
public interest require adopting these
special conditions as proposed. This
action affects only certain novel or
unusual design features on the Pratt and
Whitney Canada Model PT6C–67E
Turboshaft Engine. It is not a rule of
general applicability, and it affects only
the applicant who applied to the FAA
for approval of this feature on the
engine product.
The PWC model PT6C–67E turbo
shaft engine will incorporate a novel or
unusual design feature which is a 30Minute All Engine Operating (AEO)
power rating, for use up to 30 minutes
at any time between take-off and
landing. This design feature is
considered to be novel and unusual
relative to the part 33 airworthiness
standards.
Authority: 49 U.S.C. 106(g), 40113, 44701–
44702, 44704.
Discussion of Comments
The Special Conditions
Notice of proposed special conditions,
Notice 33–11–02–SC for the PT6C–67E
engine model was published on July 7,
2011 (76 FR 39795). No comments were
received.
We added a statement to paragraph
2(c)(1) of the special conditions that
clarifies the elements of the referenced
test that cannot be taken credit for. The
text change is for clarification only and
does not change the requirement as
proposed.
Paragraph 2(c)(1) previously read:
(1) Each § 33.87(d) continuous OEI
rating test period of 30 minutes or
longer, run at power and limits equal to
or higher then the 30 minute AEO
rating, may be credited toward this
requirement.
Paragraph 2(c)(1) now reads:
(1) Each § 33.87(d) continuous OEI
rating test period of 30 minutes or
longer, run at power and limits equal to
or higher then the 30 minute AEO
rating, may be credited toward this
requirement. Note that the test time
required for the takeoff or other OEI
ratings may not be counted toward the
25 hours of operation required at the 30minute AEO rating.
Accordingly, the FAA issues the
following special conditions as part of
the type certification basis for PWC
model PT6C–67E turbo shaft engines.
Applicability
These special conditions are
applicable to PWC model PT6C–67E
turbo shaft engines. If Pratt and Whitney
Canada applies later for a change to the
type certificate to include another
closely related model incorporating the
same novel or unusual design feature,
these special conditions would apply to
that model as well, and would be made
part of the certification basis for that
model.
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List of Subjects in 14 CFR Part 33
Air transportation, Aircraft, Aviation
safety, Safety.
The authority citation for these
special conditions continues to read as
follows:
1. Part 1 Definitions
Unless otherwise approved by the
Administrator and documented in the
appropriate manuals and certification
documents, the following definition
applies to these special conditions:
‘‘Rated 30 Minute AEO Power,’’ means
the approved shaft horsepower
developed under static conditions at the
specified altitude and temperature, and
within the operating limitations
established under part 33, and limited
in use to periods not exceeding 30
minutes, and limited to a cumulative
total of 50 minutes use for any given
flight.
2. Part 33 Requirements
(a) Sections 33.1 Applicability and
33.3 General: As applicable, all
documentation, testing and analysis
required to comply with the part 33
certification basis must account for the
30 minute AEO rating, limits and usage.
(b) Section 33.4, Instructions for
Continued Airworthiness (ICA). In
addition to the requirements of § 33.4,
the ICA must:
(1) Include instructions to ensure that
in-service engine deterioration due to
rated 30 minute AEO power usage will
not be excessive, meaning that all other
approved ratings, including One Engine
Inoperative (OEI), are available (within
associated limits and assumed usage) for
each flight; and that deterioration will
not exceed that assumed for declaring a
Time Between Overhaul period.
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Federal Register / Vol. 76, No. 176 / Monday, September 12, 2011 / Rules and Regulations
(i) The applicant must validate the
adequacy of the maintenance actions
required under paragraph (b)(1) above.
(2) Include in the Airworthiness
Limitations section, any mandatory
inspections and serviceability limits
related to the use of the 30-minute AEO
rating.
(c) Section 33.87, Endurance Test. In
addition to the requirements of
§§ 33.87(a) and 33.87(d), the overall test
run must include a minimum of 25
hours of operation at 30 minute AEO
power and limits, divided into periods
of 30 minutes AEO power with alternate
periods at maximum continuous power
or less.
(1) Each § 33.87(d) continuous OEI
rating test period of 30 minutes or
longer, run at power and limits equal to
or higher then the 30 minute AEO
rating, may be credited toward this
requirement. Note that the test time
required for the takeoff or other OEI
ratings may not be counted toward the
25 hours of operation required at the 30minute AEO rating.
Issued in Burlington, Massachusetts, on
August 31, 2011.
Peter A. White,
Manager, Engine and Propeller Directorate,
Aircraft Certification Service.
[FR Doc. 2011–23189 Filed 9–9–11; 8:45 am]
BILLING CODE 4910–13–M
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
History
Federal Register Docket No. FAA–
2010–1325, Airspace Docket No. 10–
ASO–40, published in the Federal
Register of July 25, 2011 (76 FR 44257),
amends Class E airspace at Orangeburg
Municipal Airport, Orangeburg, SC. A
typographical error was made in the
state abbreviation and geographic
coordinates of the airport listed in the
airspace description. This action
corrects that error.
Class E airspace designations are
published in paragraph 6005 of FAA
Order 7400.9U, dated August 18, 2010
and effective September 15, 2010, which
is incorporated by reference in 14 CFR
part 71.1.
Correction to Final Rule
Accordingly, pursuant to the
authority delegated to me, in FR Doc.
2011–18173 published on July 25, 2011
(76 FR 44257) on page 44257, column 3,
line 26, correct the airspace descriptor
from ‘‘ASO GA E5 Orangeburg, SC
[Amended]’’ to ‘‘ASO SC E5
Orangeburg, SC [Amended]’’, and on
page 44257, column 3, line 28, in the
airspace description under Orangeburg
Municipal Airport, SC, remove ‘‘lat.
33°27′39″ N., long. 80°51′32″ W.’’ and
insert ‘‘lat. 33°27′25″ N., long. 80°51′34″
W.’’
Issued in College Park, Georgia, on August
19, 2011.
Mark D. Ward,
Manager, Operations Support Group, Eastern
Service Center, Air Traffic Organization.
[FR Doc. 2011–23188 Filed 9–9–11; 8:45 am]
14 CFR Part 71
BILLING CODE 4910–13–P
[Docket No. FAA–2010–1325; Airspace
Docket No. 10–ASO–40]
DEPARTMENT OF COMMERCE
Amendment of Class E Airspace;
Orangeburg, SC
Bureau of Industry and Security
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule; correction.
AGENCY:
[Docket No. 110222155–1110–01]
This action corrects the
geographic coordinates and state
abbreviation of a final rule published in
the Federal Register of July 25, 2011,
that amends Class E airspace at
Orangeburg Municipal Airport,
Orangeburg, SC.
DATES: Effective Date 0901 UTC,
October 20, 2011.
FOR FURTHER INFORMATION CONTACT:
Richard Horrocks, Operations Support
Group, Eastern Service Center, Federal
Aviation Administration, P.O. Box
20636, Atlanta, Georgia 30320;
telephone (404) 305–5588.
SUPPLEMENTARY INFORMATION:
SUMMARY:
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15 CFR Parts 740, 742 and 774
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RIN 0694–AF14
Implementation of a Decision Adopted
Under the Australia Group (AG)
Intersessional Silent Approval
Procedures in 2010 and Related
Editorial Amendments
Bureau of Industry and
Security, Commerce.
ACTION: Final rule.
AGENCY:
The Bureau of Industry and
Security (BIS) publishes this final rule
to amend the Export Administration
Regulations (EAR) to implement a
decision based on a proposal that was
discussed at the 2010 Australia Group
SUMMARY:
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56099
(AG) Plenary and adopted under the AG
intersessional silent approval
procedures in November 2010.
Specifically, this rule amends the
Commerce Control List (CCL) entry in
the EAR that controls human and
zoonotic pathogens and ‘‘toxins,’’
consistent with the intersessional
changes to the AG’s ‘‘List of Biological
Agents for Export Control.’’ First, this
rule clarifies the scope of the AG-related
controls in the EAR that apply to ‘‘South
American haemorrhagic fever (Sabia,
Flexal, Guanarito)’’ and ‘‘Pulmonary
and renal syndrome-haemorrhagic fever
viruses (Seoul, Dobrava, Puumala, Sin
Nombre)’’ by revising the list of viruses
in this CCL entry to remove these two
fevers and replace them with ten viral
causative agents for the fevers. These
changes are intended to more clearly
identify the causative agents that are of
concern for purposes of the controls
maintained by the AG. Second, this rule
alphabetizes and renumbers the list of
viruses in this CCL entry, consistent
with the 2010 intersessional changes to
the AG control list. Finally, this rule
makes an editorial change to the CCL
entry that controls human and zoonotic
pathogens and ‘‘toxins.’’ To assist
exporters to more easily identify the
bacteria and ‘‘toxins’’ that are controlled
under this CCL entry, this rule
alphabetizes and renumbers the lists of
bacteria and ‘‘toxins’’ in the entry.
DATES: This rule is effective September
12, 2011.
ADDRESSES: Send comments regarding
this collection of information, including
suggestions for reducing the burden, to
Jasmeet Seehra, Office of Management
and Budget (OMB), by e-mail to
Jasmeet_K._Seehra@omb.eop.gov, or by
fax to (202) 395–7285; and to the
Regulatory Policy Division, Bureau of
Industry and Security, Department of
Commerce, 14th Street & Pennsylvania
Avenue, NW., Room 2705, Washington,
DC 20230.
FOR FURTHER INFORMATION CONTACT:
Elizabeth Sangine, Director, Chemical
and Biological Controls Division, Office
of Nonproliferation and Treaty
Compliance, Bureau of Industry and
Security, Telephone: (202) 482–3343.
SUPPLEMENTARY INFORMATION:
Background
The Bureau of Industry and Security
(BIS) is amending the Export
Administration Regulations (EAR) to
implement a decision that was adopted
under the Australia Group (AG)
intersessional silent approval
procedures in November 2010. The AG
is a multilateral forum consisting of 40
participating countries that maintain
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]]>Agencies
[Federal Register Volume 76, Number 176 (Monday, September 12, 2011)]
[Rules and Regulations]
[Pages 56097-56099]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2011-23189]
=======================================================================
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 33
[Docket No. NE133; Special Condition No. 33-010-SC]
Special Conditions: Pratt and Whitney Canada Model PT6C-67E
Turboshaft Engine
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final special conditions.
-----------------------------------------------------------------------
SUMMARY: These special conditions are issued for Pratt and Whitney
Canada (PWC) model PT6C-67E engines. The engine model will have a novel
or unusual design feature which is a 30-Minute All Engines Operating
(AEO) power rating. This rating is primarily intended for high power
hovering operations during 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
added safety standards that the Administrator considers necessary to
establish a level of safety equivalent to that established by the
existing airworthiness standards.
DATES: The effective date of these special conditions is October 12,
2011.
FOR FURTHER INFORMATION CONTACT: For technical questions concerning
this rule, contact Marc Bouthillier, ANE-111, Engine and Propeller
Directorate, Aircraft Certification Service, 12 New England Executive
Park, Burlington, Massachusetts 01803-5299; telephone (781) 238-7120;
facsimile (781) 238-7199; e-mail marc.bouthillier@faa.gov. For legal
questions concerning this rule, contact Vincent Bennett, ANE-7 Engine
and Propeller Directorate, Aircraft Certification Service, 12 New
England Executive Park, Burlington, Massachusetts 01803-5299; telephone
(781) 238-7044; facsimile (781) 238-7055; e-mail
vincent.bennett@faa.gov.
SUPPLEMENTARY INFORMATION:
Background
On July 10, 2008, PWC applied for type certification for the model
PT6C-67E turboshaft engine. The PT6C-67E engine is a derivative of the
PT6C-67C engine which has been type certificated by the FAA. This
engine incorporates a four-stage axial compressor and a centrifugal
compressor driven by a single stage high pressure turbine (HPT) and a
two-stage power turbine (PT) driving a helicopter rotor system via a
direct drive to the engine output shaft. The control system includes a
dual channel full authority digital electronic control.
The engine will incorporate a novel or unusual design feature which
is a 30-minute AEO power rating. This rating was requested by the
applicant to support rotorcraft search and rescue missions that require
extensive hover operations at high power. The use of 30-minute AEO
power is limited to a cumulative total of 50 minutes for any given
flight. However, the number of times the rating can be accessed on any
given flight is not limited, as long as 50 minutes total time per
flight is not exceeded.
The applicable airworthiness standards do not contain adequate or
appropriate airworthiness standards to address this design feature.
Therefore a special condition is necessary to apply additional
requirements for rating definition, instructions for continued
airworthiness (ICA), and endurance
[[Page 56098]]
testing. The ICA requirement is intended to address the unknown nature
of actual rating usage and associated engine deterioration. The
applicant is expected to make an assessment of the expected usage and
publish ICA's and Airworthiness Limitations section limits in
accordance with those assumptions, such that engine deterioration is
not excessive.
The endurance test requirement of 25 hours operation at 30 minutes
AEO is similar to several special conditions issued over the past 20
years. Because the PT6C-67E model has a Continuous One-Engine-
Inoperative (0EI) rating and limits equal or higher than the 30-minute
AEO rating, the test time performed at the Continuous OEI rating may be
credited toward the 25-hour requirement. However, test time spent at
other rating elements of the test, such as takeoff or other OEI ratings
(that may be equal to or higher values), may not be counted toward the
25 hours of required running.
These special conditions contain the additional airworthiness
standards necessary to establish a level of safety equivalent to the
level that would result from compliance with the applicable standards
of airworthiness in effect on the date of application.
Type Certification Basis
Under the provisions of 14 CFR 21.17 and 21.101(a), PWC must show
that the model PT6C-67E turboshaft engine meets the provisions of the
applicable regulations in effect on the date of application, unless
otherwise specified by the FAA. The current certification basis for
this model series is 14 CFR part 33 Amendment 20, however PWC proposes
to demonstrate compliance to later amendments of part 33 for this
model. In accordance with 14 CFR 21.101(b), the FAA concurs with the
PWC proposal. Therefore, the certification basis for the PT6C-67E model
turboshaft engine will be part 33, effective February 1, 1965, as
amended by Amendments 33-1 through 33-30.
If the Administrator finds that the applicable airworthiness
regulations in part 33, as amended, do not contain adequate or
appropriate safety standards for the PWC model PT6C-67E turboshaft
engine, because of a novel or unusual design feature, special
conditions are prescribed under the provisions of Sec. 21.16.
The FAA issues special conditions, as defined by 14 CFR 11.19, in
accordance with 14 CFR 11.38, which become part of the type
certification basis in accordance with Sec. 21.17(b)(2).
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 another related model that incorporates the same or
similar novel or unusual design feature, or should any other model
already included on the same type certificate be modified to
incorporate the same or similar novel or unusual design feature, the
special conditions would also apply to the other model.
Novel or Unusual Design Features
The PWC model PT6C-67E turbo shaft engine will incorporate a novel
or unusual design feature which is a 30-Minute All Engine Operating
(AEO) power rating, for use up to 30 minutes at any time between take-
off and landing. This design feature is considered to be novel and
unusual relative to the part 33 airworthiness standards.
Discussion of Comments
Notice of proposed special conditions, Notice 33-11-02-SC for the
PT6C-67E engine model was published on July 7, 2011 (76 FR 39795). No
comments were received.
We added a statement to paragraph 2(c)(1) of the special conditions
that clarifies the elements of the referenced test that cannot be taken
credit for. The text change is for clarification only and does not
change the requirement as proposed.
Paragraph 2(c)(1) previously read:
(1) Each Sec. 33.87(d) continuous OEI rating test period of 30
minutes or longer, run at power and limits equal to or higher then the
30 minute AEO rating, may be credited toward this requirement.
Paragraph 2(c)(1) now reads:
(1) Each Sec. 33.87(d) continuous OEI rating test period of 30
minutes or longer, run at power and limits equal to or higher then the
30 minute AEO rating, may be credited toward this requirement. Note
that the test time required for the takeoff or other OEI ratings may
not be counted toward the 25 hours of operation required at the 30-
minute AEO rating.
Applicability
These special conditions are applicable to PWC model PT6C-67E turbo
shaft engines. If Pratt and Whitney Canada applies later for a change
to the type certificate to include another closely related model
incorporating the same novel or unusual design feature, these special
conditions would apply to that model as well, and would be made part of
the certification basis for that model.
Conclusion
We reviewed the available data and have determined that air safety
and the public interest require adopting these special conditions as
proposed. This action affects only certain novel or unusual design
features on the Pratt and Whitney Canada Model PT6C-67E Turboshaft
Engine. It is not a rule of general applicability, and it affects only
the applicant who applied to the FAA for approval of this feature on
the engine product.
List of Subjects in 14 CFR Part 33
Air transportation, Aircraft, Aviation safety, Safety.
The authority citation for these special conditions continues to
read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701-44702, 44704.
The Special Conditions
Accordingly, the FAA issues the following special conditions as
part of the type certification basis for PWC model PT6C-67E turbo shaft
engines.
1. Part 1 Definitions
Unless otherwise approved by the Administrator and documented in
the appropriate manuals and certification documents, the following
definition applies to these special conditions: ``Rated 30 Minute AEO
Power,'' means the approved shaft horsepower developed under static
conditions at the specified altitude and temperature, and within the
operating limitations established under part 33, and limited in use to
periods not exceeding 30 minutes, and limited to a cumulative total of
50 minutes use for any given flight.
2. Part 33 Requirements
(a) Sections 33.1 Applicability and 33.3 General: As applicable,
all documentation, testing and analysis required to comply with the
part 33 certification basis must account for the 30 minute AEO rating,
limits and usage.
(b) Section 33.4, Instructions for Continued Airworthiness (ICA).
In addition to the requirements of Sec. 33.4, the ICA must:
(1) Include instructions to ensure that in-service engine
deterioration due to rated 30 minute AEO power usage will not be
excessive, meaning that all other approved ratings, including One
Engine Inoperative (OEI), are available (within associated limits and
assumed usage) for each flight; and that deterioration will not exceed
that assumed for declaring a Time Between Overhaul period.
[[Page 56099]]
(i) The applicant must validate the adequacy of the maintenance
actions required under paragraph (b)(1) above.
(2) Include in the Airworthiness Limitations section, any mandatory
inspections and serviceability limits related to the use of the 30-
minute AEO rating.
(c) Section 33.87, Endurance Test. In addition to the requirements
of Sec. Sec. 33.87(a) and 33.87(d), the overall test run must include
a minimum of 25 hours of operation at 30 minute AEO power and limits,
divided into periods of 30 minutes AEO power with alternate periods at
maximum continuous power or less.
(1) Each Sec. 33.87(d) continuous OEI rating test period of 30
minutes or longer, run at power and limits equal to or higher then the
30 minute AEO rating, may be credited toward this requirement. Note
that the test time required for the takeoff or other OEI ratings may
not be counted toward the 25 hours of operation required at the 30-
minute AEO rating.
Issued in Burlington, Massachusetts, on August 31, 2011.
Peter A. White,
Manager, Engine and Propeller Directorate, Aircraft Certification
Service.
[FR Doc. 2011-23189 Filed 9-9-11; 8:45 am]
BILLING CODE 4910-13-M
