Federal Register / Vol. 70, No. 194 / Friday, October 7, 2005 / Rules and Regulations 58605 

By order of the Board of Governors of the 

Federal Reserve System, October 4, 2005. 

Jennifer J. Johnson, 

Secretary of the Board. 

[FR Doc. 05–20299 Filed 10–6–05; 8:45 am] 

BILLING CODE 6210–01–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 25 

[Docket No. NM330; Special Conditions No. 

25–301–SC] 

Special Conditions: Raytheon Model 

HS.125 Airplanes; High-Intensity 

Radiated Fields (HIRF) 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final special conditions; request 

for comments. 

SUMMARY: These special conditions are 

issued for a Raytheon Model HS.125 

airplane modified by LJSC Ltd. This 

modified airplane will have a novel or 

unusual design feature when compared 

to the state of technology envisioned in 

the airworthiness standards for 

transport category airplanes. The 

modification incorporates the 

installation of two Air Data Display 

Units and two Air Data Sensors 

manufactured by Innovative Solutions 

and Support. These systems perform 

critical functions. The applicable 

airworthiness regulations do not contain 

adequate or appropriate safety standards 

for the protection of these systems from 

the effects of high-intensity radiated 

fields (HIRF). 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 29, 

2005. 

Comments must be received on or 

before November 7, 2005. 

ADDRESSES: Comments on these special 

conditions may be mailed in duplicate 

to: Federal Aviation Administration, 

Transport Airplane Directorate, 

Attention: Rules Docket (ANM–113), 

Docket No. NM330, 1601 Lind Avenue 

SW., Renton, Washington 98055–4056; 

or delivered in duplicate to the 

Transport Airplane Directorate at the 

above address. All comments must be 

marked: Docket No. NM330. 

FOR FURTHER INFORMATION CONTACT: Greg 

Dunn, FAA, Airplane and Flight Crew 

Interface Branch, ANM–111, Transport 

Airplane Directorate, Aircraft 

Certification Service, 1601 Lind Avenue 

SW., Renton, Washington 98055–4056; 

telephone (425) 227–2799; facsimile 

(425) 227–1320. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

The FAA has determined that notice 

and opportunity for prior public 

comment is impracticable because these 

procedures would significantly delay 

certification of the airplane and thus 

delivery of the affected aircraft. In 

addition, the substance of these special 

conditions has been subject to the 

public comment process in several prior 

instances with no substantive comments 

received. The FAA therefore finds that 

good cause exists for making these 

special conditions effective upon 

issuance; however, the FAA invites 

interested persons to participate in this 

rulemaking by submitting 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 ask that you send 

us two copies of written comments. 

We will file in the docket all 

comments we receive, as well as a 

report summarizing each substantive 

public contact with FAA personnel 

concerning these special conditions. 

The docket is available for public 

inspection before and after the comment 

closing date. If you wish to review the 

docket in person, go to the address in 

the ADDRESSES section of this preamble 

between 7:30 a.m. and 4 p.m., Monday 

through Friday, except Federal holidays. 

We will consider all comments we 

receive on or before 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. 

If you want the FAA to acknowledge 

receipt of your comments on these 

special conditions, include with your 

comments a pre-addressed, stamped 

postcard on which the docket number 

appears. We will stamp the date on the 

postcard and mail it back to you. 

Background 

On July 11, 2005, LJSC Ltd., 8847 

West Monroe Circle, Suite 300, Wichita, 

Kansas 67209 applied for a 

supplemental type certificate (STC) to 

modify a Raytheon Model HS.125 Series 

600A airplane, S/N 256066. This model 

is currently approved under Type 

Certificate No. A3EU. The Raytheon 

Model HS.125 airplane is a small 

transport category airplane powered by 

two turbine engines. It operates with a 

2-pilot crew and can seat up to 15 

passengers. The modification 

incorporates the installation of two Air 

Data Display Units (ADDUs) and two 

Air Data Sensors (ADSs) manufactured 

by Innovative Solutions and Support 

(IS&S). The avionics/electronics and 

electrical systems installed in this 

airplane have the potential to be 

vulnerable to high-intensity radiated 

fields (HIRF) external to the airplane. 

Type Certification Basis 

Under the provisions of 14 CFR 

21.101, LJSC Ltd. must show that 

Raytheon Model HS.125 Series 600A 

airplane S/N 256066, as changed, 

continues to meet the applicable 

provisions of the regulations 

incorporated by reference in Type 

Certificate No. A3EU, or the applicable 

regulations in effect on the date of 

application for the change. The 

regulations incorporated by reference in 

the type certificate are commonly 

referred to as the ‘‘original type 

certification basis.’’ The certification 

basis for the Raytheon Model HS.125 

airplane includes CAR 10, British Civil 

Airworthiness Requirements and 

Special Conditions. This certification is 

equivalent to CAR.4b dated December 

1953, Amendment 4b–1 through 

Amendment 4b–11, exclusive of CAR 

4b.350(e) and includes Special 

Regulations SR.422B. Type Certificate 

No. A3EU was amended to include 

HS.125 Series 600A on January 6, 1976. 

Compliance over and above certification 

basis requirements has been met with 

CAR Amendment 4B–12 and 

Amendment 4B–14. Compliance has 

been established with the special 

retroactive requirements of 14 CFR 25.2 

through Amendment 25–20, 14 CFR 21 

Amendment 21–27, and 14 CFR 36 

(1)(c)(2). 

If the Administrator finds that the 

applicable airworthiness regulations 

(i.e., part 25, as amended) do not 

contain adequate or appropriate safety 

standards for the Raytheon Model 

HS.125 Series 600A airplane, S/N 

256066, 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, Raytheon Model HS.125 

Series 600A airplane, S/N 256066, 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. 

Special conditions, as defined in 14 

CFR 11.19, are issued in accordance 

with § 11.38 and become part of the type 

58606 Federal Register / Vol. 70, No. 194 / Friday, October 7, 2005 / Rules and Regulations 

certification basis in accordance with 

§ 21.101. 

Special conditions are initially 

applicable to the model for which they 

are issued. Should LJSC Ltd. apply at a 

later date for a STC to modify any other 

model included on Type Certificate No. 

A3EU to incorporate the same or similar 

novel or unusual design feature, these 

special conditions would also apply to 

the other model under the provisions of 

§ 21.101. 

Novel or Unusual Design Features 

As noted earlier, Raytheon Model 

HS.125 airplane, S/N 256066, modified 

by LJSC Ltd., will incorporate two 

ADDUs and two ADSs manufactured by 

IS&S that will perform critical 

functions. These systems may be 

vulnerable to high-intensity radiated 

fields (HIRF) external to the airplane. 

The current airworthiness standards of 

part 25 do not contain adequate or 

appropriate safety standards for the 

protection of this equipment from the 

adverse effects of HIRF. Accordingly, 

this system is considered to be a novel 

or unusual design feature. 

Discussion 

There is no specific regulation that 

addresses protection requirements for 

electrical and electronic systems from 

HIRF. Increased power levels from 

ground-based radio transmitters and the 

growing use of sensitive avionics/ 

electronics and electrical systems to 

command and control airplanes have 

made it necessary to provide adequate 

protection. 

To ensure that a level of safety is 

achieved equivalent to that intended by 

the regulations incorporated by 

reference, special conditions are needed 

for Raytheon Model HS.125 Series 600A 

airplane, S/N 256066, modified by LJSC 

Ltd. These special conditions require 

that new avionics/electronics and 

electrical systems that perform critical 

functions be designed and installed to 

preclude component damage and 

interruption of function due to both the 

direct and indirect effects of HIRF. 

High-Intensity Radiated Fields (HIRF) 

With the trend toward increased 

power levels from ground-based 

transmitters, and the advent of space 

and satellite communications coupled 

with electronic command and control of 

the airplane, the immunity of critical 

avionics/electronics and electrical 

systems to HIRF must be established. 

It is not possible to precisely define 

the HIRF to which the airplane will be 

exposed in service. There is also 

uncertainty concerning the effectiveness 

of airframe shielding for HIRF. 

Furthermore, coupling of 

electromagnetic energy to cockpitinstalled equipment through the cockpit 

window apertures is undefined. Based 

on surveys and analysis of existing HIRF 

emitters, an adequate level of protection 

exists when compliance with the HIRF 

protection special condition is shown 

with either paragraph 1 OR 2 below: 

1. A minimum threat of 100 volts rms 

(root-mean-square) per meter electric 

field strength from 10 KHz to 18 GHz. 

a. The threat must be applied to the 

system elements and their associated 

wiring harnesses without the benefit of 

airframe shielding. 

b. Demonstration of this level of 

protection is established through system 

tests and analysis. 

2. A threat external to the airframe of 

the field strengths identified in the table 

below for the frequency ranges 

indicated. Both peak and average field 

strength components from the table are 

to be demonstrated. 

Frequency 

Field strength 

(volts per meter) 

Peak Average 

10 kHz–100 kHz ...................................................................................................................................................... 50 50 

100 kHz–500 kHz .................................................................................................................................................... 50 50 

500 kHz–2 MHz ....................................................................................................................................................... 50 50 

2 MHz–30 MHz ........................................................................................................................................................ 100 100 

30 MHz–70 MHz ...................................................................................................................................................... 50 50 

70 MHz–100 MHz .................................................................................................................................................... 50 50 

100 MHz–200 MHz .................................................................................................................................................. 100 100 

200 MHz–400 MHz .................................................................................................................................................. 100 100 

400 MHz–700 MHz .................................................................................................................................................. 700 50 

700 MHz–1 GHz ...................................................................................................................................................... 700 100 

1 GHz–2 GHz .......................................................................................................................................................... 2000 200 

2 GHz–4 GHz .......................................................................................................................................................... 3000 200 

4 GHz–6 GHz .......................................................................................................................................................... 3000 200 

6 GHz–8 GHz .......................................................................................................................................................... 1000 200 

8 GHz–12 GHz ........................................................................................................................................................ 3000 300 

12 GHz–18 GHz ...................................................................................................................................................... 2000 200 

18 GHz–40 GHz ...................................................................................................................................................... 600 200 

The field strengths are expressed in terms of peak of the root-mean-square (rms) over the complete modulation period. 

The threat levels identified above are 

the result of an FAA review of existing 

studies on the subject of HIRF, in light 

of the ongoing work of the 

Electromagnetic Effects Harmonization 

Working Group of the Aviation 

Rulemaking Advisory Committee. 

Applicability 

As discussed above, these special 

conditions are applicable to a Raytheon 

Model HS.125 Series 600A airplane, S/ 

N 256066, modified by LJSC Ltd. 

Should LJSC Ltd. apply at a later date 

for a STC to modify any other model 

included on Type Certificate No. A3EU 

to incorporate the same or similar novel 

or unusual design feature, these special 

conditions would apply to that model as 

well under the provisions of § 21.101. 

Conclusion 

This action affects only certain novel 

or unusual design features on a 

Raytheon Model HS.125 Series 600A 

airplane, S/N 256066, modified by LJSC 

Ltd. 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 

airplane. 

The substance of these special 

conditions has been subjected to the 

notice and comment procedure in 

several prior instances and has been 

derived without substantive change 

Federal Register / Vol. 70, No. 194 / Friday, October 7, 2005 / Rules and Regulations 58607 

from those previously issued. Because a 

delay would significantly affect the 

certification of the airplane, which is 

imminent, the FAA has determined that 

prior public notice and comment are 

unnecessary and impracticable, and 

good cause exists for adopting these 

special conditions 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 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 Special Conditions 

Accordingly, pursuant to the 

authority delegated to me by the 

Administrator, the following special 

conditions are issued as part of the 

supplemental type certification basis for 

the Raytheon Model HS.125 Series 600A 

airplane, S/N 256066, modified by LJSC 

Ltd. 

1. Protection from Unwanted Effects 

of HIRF. Each electrical and electronic 

system that performs critical functions 

must be designed and installed to 

ensure that the operation and 

operational capability of these systems 

to perform critical functions are not 

adversely affected when the airplane is 

exposed to high-intensity radiated 

fields. 

2. For the purpose of these special 

conditions, the following definition 

applies: Critical Functions: Functions 

whose failure would contribute to or 

cause a failure condition that would 

prevent the continued safe flight and 

landing of the airplane. 

Issued in Renton, Washington, on 

September 29, 2005. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 05–20175 Filed 10–6–05; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

13 CFR Part 71 

[Docket No. FAA–2005–21703; Airspace 

Docket No. 05–ACE–19] 

Modification of Class D and Class E 

Airspace; Topeka, Forbes Field, KS 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Direct final rule; request for 

comments; correction. 

SUMMARY: This action corrects an error 

in the legal description of Class D 

airspace in a direct final rule, request for 

comments that was published in the 

Federal Register on Tuesday, July 12, 

2005 (70 FR 39914). 

DATES: This direct final rule is effective 

on 0901 UTC, October 27, 2005. 

FOR FURTHER INFORMATION CONTACT: 

Brenda Mumper, Air Traffic Division, 

Airspace Branch, ACE–520A, DOT 

Regional Headquarters Building, Federal 

Aviation Administration, 901 Locust, 

Kansas City, MO 64106; telephone: 

(816) 329–2524. 

SUPPLEMENTARY INFORMATION: 

History 

Federal Register Document 2005–

21703 published on Tuesday, July 12, 

2005 (70 FR 39914), modified Class D 

and Class E Airspace at Topeka, Forbes 

Field, KS. The phrase ‘‘This Class D 

airspace area is effective during the 

specific dates and times established in 

advance by a Notice to Airmen. The 

effective date and time will thereafter be 

continuously published in the Airport/ 

Facility Directory.’’ was incorrectly 

deleted from the legal description of 

Class D airspace. This action corrects 

that error. 

■ Accordingly, pursuant to the authority 

delegated to me, the error in the legal 

description of Class D Airspace, Topeka, 

Forbes Field, KS as published in the 

Federal Register Tuesday July 12, 2005 

(70 FR 39914), (FR Doc. 2005–21703), is 

corrected as follows: 

§ 71.1 [Corrected] 

On page 39915, Column 2, at the end 

of the legal description of ACE KS D 

Topeka, Forbes Field, KS, add the 

phrase ‘‘This Class D airspace area is 

effective during the specific dates and 

times established in advance by the 

Notice to Airmen. The effective date and 

time will thereafter be continuously 

published in the Airport/Facility 

Directory.’’

Issued in Kansas City, MO, on September 

16, 2005. 

Anthony D. Roetzel, 

Acting Area Director, Western Flight Services 

Operations. 

[FR Doc. 05–20179 Filed 10–6–05; 8:45 am] 

BILLING CODE 4910–13–M 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 73 

[Docket No. FAA–2005–22600; Airspace 

Docket No. 05–AWP–11] 

RIN 2120–AA66 

Change of Controlling Agency for 

Restricted Areas; HI 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: This action changes the 

controlling agency of Restricted Areas 

R–3101 PMRFAC Four, R–3103 

Humuula, R–3107 Kaula Rock, R–

3109A, B & C Schofield-Makua, Oahu, 

and R–3110A, B & C Schofield-Makua, 

Oahu, HI. The FAA is taking this action 

to reflect an administrative change of 

controlling agencies for the restricted 

areas. There are no changes to the 

boundaries; designated altitudes; time of 

designation; or activities conducted 

within the affected restricted areas. 

EFFECTIVE DATE: 0901 UTC, December 

22, 2005. 

FOR FURTHER INFORMATION CONTACT: Ken 

McElroy, Airspace and Rules, Office of 

System Operations Airspace and AIM, 

Federal Aviation Administration, 800 

Independence Avenue, SW., 

Washington, DC 20591; telephone: (202) 

267–8783. 

SUPPLEMENTARY INFORMATION: 

The Rule 

This action amends Title 14 Code of 

Federal Regulations (14 CFR) part 73 by 

changing the name of the controlling 

agency for R–3101 PMRFAC Four, R–

3103 Humuula, R–3107 Kaula Rock, R–

3109A, B & C Schofield-Makua, Oahu, 

R–3110A, B & C Schofield-Makua, 

Oahu, HI, from ‘‘FAA, Honolulu CERAP 

or FAA, Honolulu ATCT’’ to ‘‘FAA, 

Honolulu Control Facility.’’ The FAA is 

taking this action to reflect an 

administrative change of controlling 

agencies for the restricted areas. There 

are no changes to the boundaries; 

designated altitudes; time of 

designation; or activities conducted 

within the affected restricted areas. 

Therefore, notice and public procedures 

under 5 U.S.C. 553(b) are unnecessary.