Federal Register / Vol. 62, No. 47 / Tuesday, March 11, 1997 / Rules and Regulations 11073

modified by ARINC Incorporated, which

requires that new electrical and

electronic 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, plus the advent of space

and satellite communications, coupled

with electronic command and control of

the airplane, the immunity of critical

digital avionics 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 paragraphs 1, OR 2 below:

1. A minimum threat of 100 volts per

meter peak 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 following field strengths for the

frequency ranges indicated.

Frequency Peak

(V/M)

Average

(V/M)

10 KHz–100 KHz .......... 50 50

100 KHz–500 KHz ........ 60 60

500 KHz–2 MHz ............ 70 70

2 MHz–30 MHz ............. 200 200

30 MHz–100 MHz ......... 30 30

100 MHz–200 MHz ....... 150 33

200 MHz–400 MHz ....... 70 70

400 MHz–700 MHz ....... 4,020 935

700 MHz–1 GHz ........... 1,700 170

1 GHz–2 GHz ............... 5,000 990

2 GHz–4 GHz ............... 6,680 840

4 GHz–6 GHz ............... 6,850 310

6 GHz–8 GHz ............... 3,600 670

8 GHz–12 GHz ............. 3,500 1,270

12 GHz–18 GHz ........... 3,500 360

18 GHz–40 GHz ........... 2,100 750

As discussed above, this special

condition is applicable to the Boeing

Model 747–200B airplanes, as modified

by ARINC Incorporated. Should ARINC

Incorporated apply at a later date for a

supplemental type certificate to modify

any other model included on Type

Certificate No. A20WE to incorporate

the same novel or unusual design

feature, this special condition would

apply to that model as well, under the

provisions of § 21.101(a)(1).

Conclusion

This action affects only certain design

features on the Boeing Model 747–200B

airplanes. 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 the special condition

for this airplane has been subjected to

the notice and comment procedure in

several prior instances and has been

derived without substantive change

from those previously issued. It is

unlikely that prior public comment

would result in a significant change

from the substance contained herein.

For this reason, and 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 this

special condition immediately.

Therefore, this special condition is

being made 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 Part 25

Aircraft, aviation safety, Reporting

and recordkeeping requirements.

The authority citation for this special

condition is as follows:

Authority: 49 U.S.C. 106(f), 40113, 44701,

44702, 44704.

The Special Condition

Accordingly, pursuant to the

authority delegated to me by the

Administrator, the following special

condition is issued as part of the type

certification basis for the Boeing Model

747–200B airplane, as modified by

ARINC Incorporated.

1. Protection from Unwanted Effects

of High-Intensity Radiated Fields

(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 this special

condition, 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 February

12, 1997.

Darrell M. Pederson,

Acting Manager, Transport Airplane

Directorate, Aircraft Certification Service,

ANM–100.

[FR Doc. 97–5900 Filed 3–10–97; 8:45 am]

BILLING CODE 4910–13–M

14 CFR Part 71

[Airspace Docket No. 96–ASO–39]

Amendment to Class D, E2 and E4

Airspace; Gainesville, FL

AGENCY: Federal Aviation

Administration (FAA), DOT.

ACTION: Final rule.

SUMMARY: This amendment modifies

Class D, E2 and E4 surface area airspace

at Gainesville, FL. GPS RWY 6 and GPS

RWY 24 Standard Instrument Approach

Procedures (SIAPs) have been

developed for the Gainesville Regional

Airport. Additional controlled airspace

extending upward from the surface is

needed to accommodate these SIAPs.

EFFECTIVE DATE: 0901 UTC, May 22,

1997.

FOR FURTHER INFORMATION CONTACT:

Benny L. McGlamery, System

Management Branch, Air Traffic

Division, Federal Aviation

Administration, P.O. Box 20636,

Atlanta, Georgia 30320; telephone (404)

305–5570.

SUPPLEMENTARY INFORMATION:

History

On January 13, 1997, the FAA

proposed to amend Part 71 of the

Federal Aviation Regulations (14 CFR

Part 71) by modifying Class D, E2 and

E4 airspace at Gainesville, FL. (62 FR

1699). This action would provide

adequate Class D, E2 and E4 airspace for

IFR operations at the Gainesville

Regional Airport. Interested parties were

invited to participate in this rulemaking

proceeding by submitting written

comments on the proposal to the FAA.

No comments objecting to the proposal

were received. Class D, E2 and E4

airspace designations are published in

Paragraphs 5000, 6002 and 6004,

respectively, of FAA Order 7400.9D,

dated September 4, 1996, and effective

September 16, 1996, which is

incorporated by reference in 14 CFR

71.1. The Class D, E2 and E4 airspace
11074 Federal Register / Vol. 62, No. 47 / Tuesday, March 11, 1997 / Rules and Regulations

designations listed in this document

will be published subsequently in the

Order.

The Rule

This amendment to Part 71 of the

Federal Aviation Regulations (14 CFR

part 71) modifies Class D and E2

airspace at Gainesville, FL. GPS RWY 6

and GPS RWY 24 SIAPs have been

developed for the Gainesville Regional

Airport. Additional controlled airspace

extending upward from the surface is

needed to accommodate these SIAPs.

The FAA has determined that this

regulation only involves an established

body of technical regulations for which

frequent and routine amendments are

necessary to keep them operationally

current It, therefore, (1) is not a

‘‘significant regulatory action’’ under

Executive Order 12866; (2) is not a

‘‘significant rule’’ under DOT

Regulatory Policies and Procedures (44

FR 11034; February 26, 1979); and (3)

does not warrant preparation of a

regulatary evaluation as the anticipated

impact is so minimal. Since this is a

routine matter that will only affect air

traffic procedures and air navigation, it

is certified that this rule will not have

a significant economic impact on a

substantial number of small entities

under the criteria of the Regulatory

Flexibility Act.

List of Subjects in 14 CFR part 71

Airspace, Incorporation by reference,

Navigation (air).

Adoption of the Amendment

In consideration of the foregoing, the

Federal Aviation Administration

amends 14 CFR Part 71 as follows:

PART 71—[AMENDED]

1. The authority citation for 14 CFR

Part 71 continues to read as follows:

Authority: 49 U.S.C. 106(g), 40103, 40113,

40120; EO 10854, 24 FR 9565, 3 CFR, 1959–

1963 Comp., p. 389; 14 CFR 11.69.

§ 71.1 [Amended]

2. The incorporation by reference in

14 CFR 71.1 of Federal Aviation

Administration Order 7400.9D, Airspace

Designations and Reporting Points,

dated September 4, 1996, and effective

September 16, 1996, is amended as

follows:

Paragraph 5000 Class D airspace.

* * * * *

ASO FL D Gainesville, FL [Revised]

Gainesville Regional Airport, FL

(lat. 29°14′24′′ N, long. 82°16′18′′ W)

Gainesville VORTAC

(lat. 29°34′20′′, N long. 82°21′45′′ W)

That airspace extending upward from the

surface to and including 2,700 feet MSL

within a 4.3-mile radius of Gainesville

Regional Airport, This Class D airspace area

is effective during the days and times

established in advance by a Notice to

Airmen. The effective days and times will

thereafter be continuously published in the

Airport/Facility Directory.

* * * * *

Paragraph 6002 Class E airspace areas

designated as a surface area for an airport.

* * * * *

ASO FL E2 Gainesville, FL [Revised]

Gainesville Regional Airport, FL

(lat. 29°41′24′′ N, long. 82°16′18′′ W)

Gainesville VORTAC

(lat. 29°34′20′′, N long. 82°21′45′′ W)

Within a 4.3-mile radius of Gainesville

Regional Airport. This Class E airspace area

is effective during the days and time

established in advance by a Notice to

Airmen. The effective days and times will

thereafter be continuously published in the

Airport/Facility Directory.

* * * * *

Paragraph 6004 Class E airspace areas

designated as an extension to a Class D

surface area.

* * * * *

ASO FL E4 Gainesville, FL [Revised]

Gainesville Regional Airport, FL

(lat 29°41′24′′ N, long. 82°16′18′′ W)

Gainesville VORTAC

(lat. 29°34′20′′ N, long. 82°21′45′′ W)

That airspace extending upward from the

surface within 1.5 miles each side of the

Gainesville VORTAC 034° radial, extending

from the 4.3-mile radius of Gainesville

Regional Airport to 2.5 miles northeast of the

VORTAC. This Class E airspace area is

effective during the days and times

established in advance by a Notice to

Airmen. The effective days and times will

thereafter be continuously published in the

Airport/Facility Directory.

* * * * *

Issued in College Park, Georgia on March

3, 1997.

Benny L. McGlamery,

Acting Manager, Air Traffic Division,

Southern Region.

[FR Doc. 97–6045 Filed 3–10–97; 8:45 am]

BILLING CODE 4910–13–M

14 CFR Part 71

[Airspace Docket No. 96–ASO–40]

Amendment to Class D and E2

Airspace; Orlando, FL

AGENCY: Federal Aviation

Administration (FAA), DOT.

ACTION: Final rule.

SUMMARY: This amendment modifies

Class D and E2 surface area airspace at

Orlando, FL. GPS RWY 7 and GPS RWY

25 Standard Instrument Approach

Procedures (SIAPs) have been

developed for the Orlando Executive

Airport. Additional controlled airspace

extending upward from the surface is

needed to accommodate these SIAPs.

EFFECTIVE DATE: 0901 UTC, May 22,

1997.

FOR FURTHER INFORMATION CONTACT:

Benny L. McGlamery, System

Management Branch, Air Traffic

Division, Federal Aviation

Administration, P.O. Box 20636,

Atlanta, Georgia 30320; telephone (404)

305–5570.

SUPPLEMENTARY INFORMATION:

History

On January 13, 1997, the FAA

proposed to amend Part 71 of the

Federal Aviation Regulations (14 CFR

Part 71) by modifying Class D and E2

airspace at Orlando, FL. (62 FR 1698).

This action would provide adequate

Class D and E2 airspace for IFR

operations at the Orlando Executive

Airport.

Interested parties were invited to

participate in this rulemaking

proceeding by submitting written

comments on the proposal to the FAA.

No comments objecting to the proposal

were received. Class D and E2 airspace

designations are published in

Paragraphs 5000 and 5000, respectively,

of FAA Order 7400.9D, dated September

4, 1996, and effective September 16,

1996, which is incorporated by

reference in 14 CFR 71.1. The Class D

and E2 airspace designations listed in

this document will be published

subsequently in the Order.

The Rule

This amendment to Part 71 of the

Federal Aviation Regulations (14 CFR

part 71) modifies Class D and E2

airspace at Orlando, FL. GPS RWY 7

and GPS RWY 25 SIAPs have been

developed for the Orlando Executive

Airport. Additional controlled airspace

extending upward from the surface is

needed to accommodate these SIAPs.

The FAA has determined that this

regulation only involves an established

body of technical regulations for which

frequent and routine amendments are

necessary to keep them operationally

current. It, therefore, (1) is not a

‘‘significant regulatory action’’ under

Executive Order 12866; (2) is not a

‘‘significant rule’’ under DOT

Regulatory Policies and Procedures (44

FR 11034; February 26, 1979); and (3)

does not warrant preparation of a

regulatory evaluation as the anticipated

impact is so minimal. Since this is a

routine matter that will only affect air