32972 Federal Register / Vol. 63, No. 116 /Wednesday, June 17, 1998 /Rules and Regulations

The following Agreement States also

administer certification programs as

Certifying Entities: Georgia, Illinois,

Iowa, Louisiana, Nevada, North Dakota,

and Texas. Individuals wishing to act as

radiographers who are certified in

isotope radiography through one of

these state programs will meet the

certification requirement specified in 10

CFR 34.43(a)(1).

Dated at Rockville, Maryland this 9th day

of June, 1998.

For the Nuclear Regulatory Commission.

Larry W. Camper, Chief, Materials Safety

Branch, Division of Industrial and Medical

Nuclear Safety, Office of Nuclear Material

Safety and Safeguards.

[FR Doc. 98–16135 Filed 6–16–98; 8:45 am]

BILLING CODE 7590–01–P

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Parts 21 and 29

[Docket No. SW004; Special Conditions No.

29–004–SC]

Special Conditions: Sikorsky Aircraft

Corporation, Model S76C; Application

of Rated 30-Minute Power

AGENCY: Federal Aviation

Administration (FAA), DOT.

ACTION: Final special conditions; request

for comments.

SUMMARY: These special conditions are

issued for the Sikorsky Model S76C

helicopter. This helicopter will have a

novel or unusual design feature

associated with a new rated 30-minute

power. The applicable airworthiness

regulations do not contain adequate or

appropriate safety standards for this

new rated 30-minute power. 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 June 17, 1998.

Comments must be received on or

before July 17, 1998.

ADDRESSES: Comments on these special

conditions may be mailed in duplicate

to: Federal Aviation Administration

(FAA), Office of the Regional Counsel,

Attention: Rules Docket No. SW004,

2601 Meacham Blvd., Room 663, Fort

Worth, Texas 76137; or delivered in

duplicate to the Office of the Regional

Counsel at the above address.

Comments must be marked Docket No.

SW004. Comments may be inspected in

the Rules Docket weekdays, except

Federal holidays, between 7:30 a.m. and

4:00 p.m.

FOR FURTHER INFORMATION CONTACT:

Scott Horn, FAA, Rotorcraft Directorate,

Rotorcraft Standards Staff, Fort Worth,

Texas 76193–0110, telephone (817)

222–5125, fax (817) 222–5961.

SUPPLEMENTARY INFORMATION: The FAA

has determined that notice and

opportunity for prior public comment

hereon are impracticable because these

procedures would significantly delay

issuance of the approval design and

thus delivery of the affected helicopter.

The FAA therefore finds that good cause

exists for making these special

conditions effective upon issuance.

Comments Invited

Interested persons are invited to

submit such written data, views, or

arguments as they may desire.

Communications should identify the

regulatory docket and be submitted in

duplicate to the address specified above.

All communications received on or

before the closing date for comments

will be considered. The special

conditions may be changed in light of

the comments received. All comments

received will be available in the Rules

Docket for examination by interested

persons, both before and after the

closing date for comments. A report

summarizing each substantive public

contact with FAA personnel concerning

this rulemaking will be filed in the

docket. Commenters wishing the FAA to

acknowledge receipt of their comments

submitted in response to this special

condition must include a self-addressed,

stamped postcard on which the

following statement is made:

‘‘Comments to Docket No. SW004.’’ The

postcard will be date stamped and

returned to the commenter.

Background

On November 19, 1997, Sikorsky

Aircraft Corporation applied for a

change to Type Certificate (TC) No.

H1NE for use of a rated 30-minute

power on the Model S76C helicopter.

The Sikorsky Model S76C is a transport

category A and B rotorcraft powered by

two Turbomeca Arriel 2S1 engines with

a maximum gross weight of 11,700

pounds.

This new rated 30-minute power is

intended for periods of use up to 30

minutes at any time after takeoff during

a flight performing search and rescue

missions. However, this rating is also

suitable for other missions that require

increased rotorcraft hovering capability

and duration than the current ratings

allow. The Sikorsky Model S76C

helicopter with the Arriel 2S1 engine

installation will have the following

power ratings: 30-second One-EngineInoperative (OEI), 2-minute OEI,

Continuous OEI, 30-minute, Takeoff,

and Maximum Continuous ratings.

The current rotorcraft maximum

continuous rating is at the same torque

and RPM limits as the proposed 30-

minute rating. As a result, the FAA has

determined that compliance with the

structural and drive system

requirements of 14 CFR part 29 (part 29)

has not been affected by this new rating

application. In addition, all the power

parameter limits and ranges for the 30-

minute power coincide with the existing

instrument markings for the takeoff

rating. Therefore, these markings,

applied to the new 30-minute power,

have been found to comply with the

part 29 requirements.

The applicable airworthiness

requirements do not contain a 30-

minute power rating definition and do

not contain adequate or appropriate

safety standards for the type

certification of this new and unusual

engine rating. Due to increased N1 (gas

turbine speed) and T5 (turbine outlet

temperature) limits for this new rating,

as compared to the existing continuous

rating, airworthiness requirements must

be developed for powerplant cooling

and operational limitations.

Additionally, for use of the 30-minute

power rating, the engine manufacturer

has established a new method to

determine the engine overhaul time.

The new method accelerates the engine

hours time-in-service when the 30-

minute rating is used. For the Sikorsky

Model S76C helicopter, the pilot is

required to record the 30-minute rating

usage, since no means of automatically

counting or recording is provided. As a

result of the additional workload to the

pilot, the FAA has determined that a

two-pilot crew is necessary to meet the

minimum flight crew requirements of

part 29.

Type Certification Basis

Under the provisions of 14 CFR

21.101, Sikorsky Aircraft Corporation

must show that the Model S76C

helicopter with the Arriel 2S1 engine

installation meets the applicable

provisions of the regulations in effect on

the date of the application or the

applicable provisions of the regulations

as referenced in TC Number H1NE. The

regulations incorporated by reference in

the TC are commonly referred to as the

‘‘original type certification basis.’’ The

regulations incorporated by reference in

TC Number H1NE are as follows:

Part 29, effective February 1, 1965,

plus Amendments 29–1 through 29–11;
Federal Register / Vol. 63, No. 116 /Wednesday, June 17, 1998 /Rules and Regulations 32973

in addition, portions of Amendments

29–12, specifically, §§ 29.67, 29.71,

29.75, 29.141, 29.173, 29.175, 29.931,

29.1189(a)(2), 29.1555(c)(2), 29 1557(c),

and portions of Amendment 29–13,

specifically § 29.965, and Amendment

29–21. In addition, for the Sikorsky

Model S76C (with Arriel 2S1 Engine

Configuration): Amendment 29–34

specifically 29.67(a)(1)(i), 29.923(a),

(b)(1) and (b)(3), 29.1143(f),

29.1305(a)(24) and (a)(25), 29.1521(i)

and (j), and 29.1549(e) and Amendment

36–20 of FAR 36, Appendix H; also

Special Condition No. 96–ASW–16. In

addition, the certification basis includes

certain special conditions, exemptions

and later amended sections of the

applicable Part that are not relevant to

these special conditions.

If the Administrator finds that the

applicable airworthiness regulations for

part 29 do not contain adequate or

appropriate safety standards for the

Sikorsky Model S76C because of a novel

or unusual design feature, special

conditions are prescribed under the

provisions of § 21.16.

In addition to the applicable

airworthiness regulations and special

conditions, the Sikorsky Model S76C

must comply with the noise certification

requirements of part 36, and the FAA

must issue a finding of regulatory

adequacy pursuant to § 611 of Public

Law 92–574, the ‘‘Noise Control Act of

1972.’’

Special conditions, as appropriate, are

issued in accordance with § 11.49, as

required by §§ 11.28 and 11.29(b), and

become part of the type certification

basis in accordance with § 21.101(b)(2).

Special conditions are initially

applicable to the model for which they

are issued. Should the TC 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 TC be modified to incorporate the

same novel or unusual design feature,

the special conditions would also apply

to the other model under the provisions

of § 21.101(a)(1).

Novel or Unusual Design Features

The Sikorsky Model S76C will

incorporate the following novel or

unusual design features: A new rated

30-minute power which will require a

special condition for hovering cooling

test procedures and powerplant

limitations.

Applicability

As discussed above, these special

conditions are applicable to the

Sikorsky Model S76C. Should Sikorsky

Aircraft Corporation apply at a later date

for a change to the TC to include

another model incorporating the same

novel or unusual design feature, the

special conditions would apply to that

model as well under the provisions of

§ 21.101(a)(1).

Conclusion

This action affects only certain novel

or unusual design features on one model

of helicopter. It is not a rule of general

applicability and affects only the

applicant who applied to the FAA for

approval of these features on the

helicopter.

Under standard practice, the effective

date of final special conditions would

be 30 days after the date of publication

in the Federal Register; however, as the

certification date for the Sikorsky Model

S76C is imminent, the FAA finds that

good cause exists to make these special

conditions effective upon issuance. The

FAA is requesting comments to allow

interested persons to submit views that

may not have been submitted in

response to the prior opportunities for

comment described above.

List of Subjects in 14 CFR Parts 21 and

29

Aircraft, Air transportation, Aviation

safety, Rotorcraft, Safety.

The authority citation for these

special conditions is as follows:

Authority: 42 U.S.C. 7572; 49 U.S.C.

106(g), 40105, 40113, 44701–44702, 44704,

44709, 44711, 44713, 44715, 45303.

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 Sikorsky Model

S76C helicopters.

1. Section 29.1049 Hovering Cooling

Test Procedures

In addition to the requirements of

§ 29.1049, acceptable hovering cooling

provisions must be shown for the

following conditions:

(a) At the 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 30-minute power, in-ground effect

in still air, until at least 5 minutes after

the occurrence of the highest

temperature recorded or until the

expiration of the 30-minute power

application period, whichever occurs

first; and,

(b) With 30-minute power, 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 expiration of the

30-minute power application period,

whichever occurs first.

2. Section 29.1521 Powerplant

limitations

In addition to the requirements of

§ 29.1521 the limitations for rated 30-

minute power usage must be established

as follows:

Rated 30-Minute Power Operations

The powerplant rated 30-minute

power operation must be limited to use

for periods not to exceed 30 minutes for

hovering operations only and by:

(a) The maximum rotational speed

which may not be greater than—

(i) The maximum value determined

by the rotor design; or

(ii) The maximum value shown

during the type tests;

(b) The maximum allowable turbine

outlet gas temperature;

(c) The maximum allowable engine

and transmission oil temperatures.

(d) The maximum allowable power or

torque for each engine, considering the

power input limitations of the

transmission with all engines operating;

and

(e) The maximum allowable power or

torque for each engine considering the

power input limitations of the

transmission with one-engineinoperative.

Issued in Fort Worth, Texas, on June 5,

1998.

Eric Bries,

Acting Manager, Rotorcraft Directorate,

Aircraft Certification Service, ASW–100.

[FR Doc. 98–16078 Filed 6–16–98; 8:45 am]

BILLING CODE 4910–13–P

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 98–CE–59–AD; Amendment 39–

10598; AD 98–13–10]

RIN 2120–AA64

Airworthiness Directives; Cessna

Aircraft Company Model 182S

Airplanes

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Final rule; request for

comments.

SUMMARY: This amendment adopts a

new airworthiness directive (AD) that

applies to all Cessna Aircraft Company

(Cessna) Model 182S airplanes. This AD

requires repetitively inspecting all

engine exhaust muffler end plates (four