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Rules and Regulations Federal Register

54889 

Vol. 79, No. 178 

Monday, September 15, 2014 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 29 

[Docket No. FAA–2014–0697; Special 

Conditions No. 29–034–SC] 

Special Conditions: AgustaWestland, 

AW189; Use of 30-Minute All Engines 

Operating (AEO) Power Rating 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final special conditions; request 

for comments. 

SUMMARY: These special conditions are 

issued for the AgustaWestland Model 

AW189 helicopter. This model 

helicopter will have the novel or 

unusual design feature of a 30-minute 

all engines operating (AEO) 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: The effective date of these 

special conditions is September 4, 2014. 

We must receive your comments by 

October 30, 2014. 

ADDRESSES: Send comments identified 

by docket number FAA–2014–0697 

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 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. 

• 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 

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 @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: Eric 

Haight, Rotorcraft Standards Staff, 

ASW–111, Rotorcraft Directorate, 

Aircraft Certification Service, 2601 

Meacham Blvd., Fort Worth, Texas 

76137; telephone (817) 222–5204; 

facsimile (817) 222–5961. 

SUPPLEMENTARY INFORMATION: 

Reason for No Prior Notice and 

Comment Before Adoption 

The FAA has determined that notice 

and opportunity for public comment are 

impractical because we do not expect 

substantive comments, and because this 

special condition only affects this one 

manufacturer. We also considered that 

these procedures would significantly 

delay the issuance of the design 

approval, and thus, the delivery of the 

affected helicopter. Since the public 

comment process would significantly 

delay delivery of the AgustaWestland 

Model AW189 helicopter, the FAA finds 

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 January 31, 2012 AgustaWestland 

applied for a Type Certificate for the 

new model AW189. The AW189 is a 

Transport Category, 14 CFR part 29, 

twin engine conventional helicopter 

designed for civil operations. This 

model will be certificated with Category 

A performance and under both single 

and dual pilot instrument flight rules, 

powered by two General Electric CT7– 

2E1 engines with a dual channel Full 

Authority Digital Engine Control 

system, have five main rotor blades, a 

maximum gross weight of 18,300 

pounds, and a velocity not to exceed 

169 knots. The AW189 model will have 

an integrated modular avionics suite 

with four 8x10 inch multi-function 

displays that are night vision goggle 

compatible, along with a 4-axis 

automatic flight control system. This 

helicopter will be capable of carrying a 

maximum of 19 passengers and 2 crew 

members. Its initial customer base will 

be offshore oil and Search and Rescue 

operations. 

AgustaWestland proposes that the 

AW189 model use a novel and unusual 

design feature, which is a 30-minute 

AEO power rating. 14 CFR 1.1 defines 

‘‘rated takeoff power’’ as limited in use 

to no more than 5 minutes for takeoff 

operation. 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 AEO rating and its 

effects on the rotorcraft. The use of this 

power will be limited to 30 minutes. 

These special conditions will add 

requirements to the existing 

airworthiness standards in 14 CFR 


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54890 Federal Register / Vol. 79, No. 178 / Monday, September 15, 2014 / Rules and Regulations 

29.1049 (Hovering cooling test 

procedures), § 29.1305 (Powerplant 

instruments), and § 29.1521 (Powerplant 

limitations). 

For the AW189 model helicopter, the 

European Aviation Safety Agency has 

issued Certification Review Item E–07, 

which documents the special 

conditions. 

The following is a summary of the 

final special conditions: 

(a) In addition to the requirements of 

§ 29.1049, the aircraft cooling effects 

due to use of the 30-minute AEO power 

rating versus the Takeoff (5-minute) 

rating must be accounted for in the 

testing. 

(b) In addition to the requirements of 

§ 29.1305, since this new 30-minute 

AEO power rating has a time limit 

associated with its use, the pilot must 

have the means to identify: 

(1) When the rated engine power level 

is achieved, 

(2) when the event begins, 

(3) when the time interval expires, 

and 

(4) when the cumulative time in one 

flight is reached. 

(c) In addition to the requirements of 

§ 29.1521, this new 30 minute AEO 

power rating must be limited to not 

more than 30 minutes per use. This new 

rating will allow use of power above 

maximum continuous power (MCP) for 

30 minutes. 

(d) Furthermore, the model AW189 

rotorcraft flight manual must include 

limitations on use of the 30-minute AEO 

power rating, which state that 

continuous use above MCP take-off 

power is limited to 30 minutes. 

Type Certification Basis 

Under 14 CFR 21.17, AgustaWestland 

must show that the AW189 model 

helicopter meets the applicable 

provisions of part 29, as amended by 

Amendment 29–1 through 29–52, dated 

April 5, 2010. The model AW189 

certification basis date is the May 12, 

2011, date of application to EASA. 

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 AgustaWestland 

model AW189 helicopter because of a 

novel or unusual design feature. 

Therefore, special conditions are 

prescribed under the provisions of 14 

CFR 21.16. 

In addition to the applicable 

airworthiness regulations and special 

conditions, the AgustaWestland model 

AW189 helicopter must comply with 

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 § 11.19, in accordance with 

§ 11.38, and they become part of the 

type certification basis under 

§ 21.17(a)(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 any other model that 

incorporates the same novel or unusual 

design feature, the special conditions 

would also apply to the other model. 

Novel or Unusual Design Features 

The AgustaWestland AW189 model 

helicopter will incorporate the 

following novel or unusual design 

feature: 

• A 30-minute AEO power rating. 

Applicability 

These special conditions are 

applicable to the AgustaWestland model 

AW189 helicopter. Should 

AgustaWestland 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 one model 

of helicopters. It is not a rule of general 

applicability, and it affects only the 

applicant who applied to the FAA for 

approval of this feature. 

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 the 

AgustaWestland model AW189 

helicopter. Unless stated otherwise, all 

requirements in §§ 29.1049, 29.1305, 

and 29.1521 remain unchanged. 

Section 29.1049, Hovering cooling test 

procedures. In addition to the 

requirements of this section, for 

rotorcraft with a 30-minute AEO power 

rating, the hovering cooling provisions 

at the 30-minute AEO 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 AEO 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 AEO 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, for rotorcraft with a 30-minute 

AEO power rating, a means must be 

provided to alert the pilot when the 

engine is at the 30-minute power level, 

when the event begins, when the time 

interval expires, and when the 

cumulative time in one flight is reached. 

Section 29.1521 Powerplant 

limitations, at Amendment 29–41. In 

addition to the requirements of this 

section, use of the 30-minute AEO 

power must be limited to not 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 September 

4, 2014. 

Lance T. Gant, 

Acting Manager, Rotorcraft Directorate, 

Aircraft Certification Service. 

[FR Doc. 2014–21794 Filed 9–12–14; 8:45 am] 

BILLING CODE 4910–13–P 


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