Federal Register / Vol. 72, No. 155 / Monday, August 13, 2007 / Rules and Regulations 45151 

PART 35—MEDICAL USE OF 

BYPRODUCT MATERIAL 

■ 4. The authority citation for part 35 

continues to read as follows: 

Authority: Secs. 81, 161, 182, 183, 68 Stat. 

935, 948, 953, 954, as amended (42 U.S.C. 

2111, 2201, 2232, 2233); sec. 201, 88 Stat. 

1242, as amended (42 U.S.C. 5841); sec. 1704, 

112 Stat. 2750 (44 U.S.C. 3504 note). 

■ 5. In § 35.2, the definition of Medium 

dose-rate remote afterloader is revised 

to read as follows: 

§ 35.2 Definitions. 

* * * * * 

Medium dose-rate remote afterloader, 

as used in this part, means a 

brachytherapy device that remotely 

delivers a dose rate of greater than 2 

gray (200 rads) per hour, but less than 

or equal to 12 gray (1200 rads) per hour 

at the point or surface where the dose 

is prescribed. 

* * * * * 

■ 6. In § 35.41, paragraph (b)(4) is 

revised to read as follows: 

§ 35.41 Procedures for administrations 

requiring a written directive. 

* * * * * 

(b) * * * 

(4) Verifying that any computergenerated dose calculations are correctly 

transferred into the consoles of 

therapeutic medical units authorized by 

§§ 35.600 or 35.1000. 

* * * * * 

■ 7. In § 35.75, the text of paragraph (a) 

is republished and footnote 1 is revised 

to read as follows: 

§ 35.75 Release of individuals containing 

unsealed byproduct material or implants 

containing byproduct material. 

(a) A licensee may authorize the 

release from its control of any 

individual who has been administered 

unsealed byproduct material or 

implants containing byproduct material 

if the total effective dose equivalent to 

any other individual from exposure to 

the released individual is not likely to 

exceed 5 mSv (0.5 rem).1

* * * * * 1The current revision of NUREG–1556, 

Vol. 9, ‘‘Consolidated Guidance About 

Materials Licenses: Program-Specific 

Guidance About Medical Licenses’’ describes 

methods for calculating doses to other 

individuals and contains tables of activities 

not likely to cause doses exceeding 5 mSv 

(0.5 rem). 

■ 8. In § 35.92, the introductory text of 

paragraph (a) is revised to read as 

follows: 

§ 35.92 Decay-in-storage. 

(a) A licensee may hold byproduct 

material with a physical half-life of less 

than or equal to 120 days for decay-instorage before disposal without regard to 

its radioactivity if it—

* * * * * 

■ 9. In § 35.190, paragraph (a)(1) is 

revised to read as follows: 

§ 35.190 Training for uptake, dilution, and 

excretion studies. 

* * * * * 

(a) * * * 

(1) Complete 60 hours of training and 

experience in basic radionuclide 

handling techniques and radiation 

safety applicable to the medical use of 

unsealed byproduct material for uptake, 

dilution, and excretion studies as 

described in paragraphs (c)(1)(i) through 

(c)(1)(ii)(F) of this section; and 

* * * * * 

■ 10. In § 35.290, paragraph (a)(1) is 

revised to read as follows: 

§ 35.290 Training for imaging and 

localization studies. 

* * * * * 

(a) * * * 

(1) Complete 700 hours of training 

and experience in basic radionuclide 

handling techniques and radiation 

safety applicable to the medical use of 

unsealed byproduct material for imaging 

and localization studies as described in 

paragraphs (c)(1)(i) through (c)(1)(ii)(G) 

of this section; and 

* * * * * 

Dated at Rockville, Maryland, this 31st day 

of July, 2007. 

For the Nuclear Regulatory Commission. 

Martin J. Virgilio, 

Acting Executive Director for Operations. 

[FR Doc. 07–3976 Filed 8–10–07; 8:45 am] 

BILLING CODE 7590–01–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2007–28940; Directorate 

Identifier 2007–NM–131–AD; Amendment 

39–15158; AD 2007–16–19] 

RIN 2120–AA64 

Airworthiness Directives; Boeing 

Model 747–200B, 747–300, and 747–

400 Series Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule; request for 

comments. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

Boeing Model 747–200B, 747–300, and 

747–400 series airplanes. This AD 

requires doing repetitive detailed 

inspections for cracking of the aft 

tension tie channels from body station 

(BS) 1120 to BS 1220 and from BS 880 

to BS 1100, and corrective actions if 

necessary. This AD results from cracks 

found in the aft tension tie channels at 

four station locations, on a Model 747–

200B series airplane that had been 

modified to a special freighter. We are 

issuing this AD to detect and correct 

cracking of the aft tension tie channels; 

failure of more than one tension tie 

could result in rapid depressurization of 

the airplane. 

DATES: This AD becomes effective 

August 28, 2007. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in the AD 

as of August 28, 2007. 

We must receive comments on this 

AD by October 12, 2007. 

ADDRESSES: Use one of the following 

addresses to submit comments on this 

AD. 

• DOT Docket Web site: Go to 

http://dms.dot.gov and follow the 

instructions for sending your comments 

electronically. 

• Government-wide rulemaking Web 

site: Go to http://www.regulations.gov 

and follow the instructions for sending 

your comments electronically. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M–

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue, SE., 

Washington, DC 20590. 

• Fax: (202) 493–2251. 

• Hand Delivery: Room W12–140 on 

the ground floor of the West Building, 

1200 New Jersey Avenue, SE., 

Washington, DC, between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

Contact Boeing Commercial 

Airplanes, P.O. Box 3707, Seattle, 

Washington 98124–2207, for service 

information identified in this AD. 

FOR FURTHER INFORMATION CONTACT: Ivan 

Li, Aerospace Engineer, Airframe 

Branch, ANM–120S, FAA, Seattle 

Aircraft Certification Office, 1601 Lind 

Avenue, SW., Renton, Washington 

98057–3356; telephone (425) 917–6437; 

fax (425) 917–6590. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We have received a report indicating 

that cracks were found in the aft tension 

tie channels at four station locations, on 

a Model 747–200B series airplane that 


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45152 Federal Register / Vol. 72, No. 155 / Monday, August 13, 2007 / Rules and Regulations 

had been modified to a special freighter. 

The cracks were found near the body 

frames at a location where the flanges of 

the aft tension tie channels are 

machined down to a flat plate in order 

to attach to the body frames. The largest 

crack was approximately 0.5 inch in 

length. The airplane had accumulated 

4,856 flight cycles since modification to 

special freighter. Tension ties are 

considered to be structurally significant, 

in that they are critical to airplane 

structural integrity. Failure of more than 

one tension tie, if not corrected, could 

result in rapid depressurization of the 

airplane. 

The upper deck tension ties on Model 

747–300 and –400 series airplanes that 

have been modified to a special freighter 

configuration are similar to those on the 

affected Model 747–200B series 

airplanes that have been modified to a 

special freighter configuration. 

Therefore, all of these airplanes are 

subject to the same unsafe condition. 

Relevant Service Information 

We have reviewed Boeing Alert 

Service Bulletin 747–53A2610, dated 

May 10, 2007. The service bulletin 

describes procedures for doing 

repetitive detailed inspections for 

cracking of the aft tension tie channels 

from body station (BS) 1120 to BS 1220 

and from BS 880 to BS 1100, and doing 

corrective actions as applicable. The 

corrective actions include repairing any 

crack found in a tension tie, and 

contacting Boeing for repair instructions 

if any crack is found in a bolt hole. The 

service bulletin specifies that, as an 

option to accomplishing the repetitive 

detailed inspections, accomplishing the 

repairs at all tension tie locations can be 

done as a preventive modification. 

The service bulletin specifies 

accomplishing the initial inspection 

from BS 1120 to BS 1220 before the 

accumulation of 4,000 flight cycles 

since modification to special freighter or 

converted freighter, or within 1,000 

flight cycles after the date on the service 

bulletin, whichever occurs later. The 

service bulletin specifies accomplishing 

the initial inspection from BS 880 to BS 

1100 before the accumulation of 8,000 

flight cycles since modification to 

special freighter or converted freighter, 

or within 1,000 flight cycles after the 

date on the service bulletin, whichever 

occurs later. The service bulletin also 

specifies repeating the inspections at 

intervals not to exceed 4,000 flight 

cycles. The service bulletin also 

specifies repairing any crack before 

further flight. 

Accomplishing the actions specified 

in the service information is intended to 

adequately address the unsafe 

condition. 

FAA’s Determination and Requirements 

of This AD 

The unsafe condition described 

previously is likely to exist or develop 

on other airplanes of the same type 

design that may be registered in the U.S. 

at some time in the future. Therefore, 

we are issuing this AD to detect and 

correct cracking of the aft tension tie 

channels; failure of more than one 

tension tie could result in rapid 

depressurization of the airplane. This 

AD requires accomplishing the actions 

specified in the service information 

described previously, except as 

discussed under ‘‘Difference Between 

the AD and Service Bulletin.’’

Difference Between the AD and Service 

Bulletin 

The service bulletin specifies to 

contact the manufacturer for 

instructions on how to repair certain 

conditions, but this proposed AD would 

require repairing those conditions in 

one of the following ways: 

• Using a method that we approve; or 

• Using data that meet the 

certification basis of the airplane, and 

that have been approved by an 

Authorized Representative for the 

Boeing Commercial Airplanes 

Delegation Option Authorization 

Organization whom we have authorized 

to make those findings. 

Costs of Compliance 

If an affected airplane is imported and 

placed on the U.S. Register in the future, 

the required inspections would take 

about 4 work hours per airplane, at an 

average labor rate of $80 per work hour. 

Based on these figures, the estimated 

cost of the AD would be $320 per 

airplane, per inspection cycle. 

FAA’s Determination of the Effective 

Date 

No airplane affected by this AD is 

currently on the U.S. Register. 

Therefore, providing notice and 

opportunity for public comment is 

unnecessary before this AD is issued, 

and this AD may be made effective in 

less than 30 days after it is published in 

the Federal Register. 

Comments Invited 

This AD is a final rule that involves 

requirements that affect flight safety and 

was not preceded by notice and an 

opportunity for public comment; 

however, we invite you to submit any 

relevant written data, views, or 

arguments regarding this AD. Send your 

comments to an address listed under the 

ADDRESSES section. Include ‘‘Docket No. 

FAA–2007–28940; Directorate Identifier 

2007–NM–131–AD’’ at the beginning of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of the AD that might suggest a 

need to modify it. 

We will post all comments we 

receive, without change, to http:// 

dms.dot.gov, including any personal 

information you provide. We will also 

post a report summarizing each 

substantive verbal contact with FAA 

personnel concerning this AD. Using the 

search function of that web site, anyone 

can find and read the comments in any 

of our dockets, including the name of 

the individual who sent the comment 

(or signed the comment on behalf of an 

association, business, labor union, etc.). 

You may review the DOT’s complete 

Privacy Act Statement in the Federal 

Register published on April 11, 2000 

(65 FR 19477–78), or you may visit 

http://dms.dot.gov. 

Examining the Docket 

You may examine the AD docket on 

the Internet at http://dms.dot.gov, or in 

person at the Docket Operations office 

between 9 a.m. and 5 p.m., Monday 

through Friday, except Federal holidays. 

The Docket Operations office (telephone 

(800) 647–5527) is located on the 

ground level of the West Building at the 

DOT street address stated in the 

ADDRESSES section. Comments will be 

available in the AD docket shortly after 

the Docket Management System receives 

them. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

Section 106, describes the authority of 

the FAA Administrator. Subtitle VII, 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

We are issuing this rulemaking under 

the authority described in Subtitle VII, 

Part A, Subpart III, Section 44701, 

‘‘General requirements.’’ Under that 

section, Congress charges the FAA with 

promoting safe flight of civil aircraft in 

air commerce by prescribing regulations 

for practices, methods, and procedures 

the Administrator finds necessary for 

safety in air commerce. This regulation 

is within the scope of that authority 

because it addresses an unsafe condition 

that is likely to exist or develop on 

products identified in this rulemaking 

action. 


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Federal Register / Vol. 72, No. 155 / Monday, August 13, 2007 / Rules and Regulations 45153 

Regulatory Findings 

We have determined that this AD will 

not have federalism implications under 

Executive Order 13132. This AD will 

not have a substantial direct effect on 

the States, on the relationship between 

the national government and the States, 

or on the distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify that the regulation: 

1. Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866; 

2. Is not a ‘‘significant rule’’ under the 

DOT Regulatory Policies and Procedures 

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

3. Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

We prepared a regulatory evaluation 

of the estimated costs to comply with 

this AD and placed it in the AD docket. 

See the ADDRESSES section for a location 

to examine the regulatory evaluation. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

Adoption of the Amendment 

■ Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA amends 14 CFR part 39 as 

follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

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

§ 39.13 [Amended] 

■ 2. The Federal Aviation 

Administration (FAA) amends § 39.13 

by adding the following new 

airworthiness directive (AD): 

2007–16–19 Boeing: Amendment 39–15158. 

Docket No. FAA–2007–28940; 

Directorate Identifier 2007–NM–131–AD. 

Effective Date 

(a) This AD becomes effective August 28, 

2007. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Boeing Model 747–

200B, 747–300, and 747–400 series airplanes, 

certificated in any category; as identified in 

Boeing Alert Service Bulletin 747–53A2610, 

dated May 10, 2007. 

Unsafe Condition 

(d) This AD results from cracks found in 

the aft tension tie channels at four station 

locations, on a Model 747–200B series 

airplane that had been modified to a special 

freighter. We are issuing this AD to detect 

and correct cracking of the aft tension tie 

channels; failure of more than one tension tie 

could result in rapid depressurization of the 

airplane. 

Compliance 

(e) You are responsible for having the 

actions required by this AD performed within 

the compliance times specified, unless the 

actions have already been done. 

Repetitive Inspections 

(f) At the applicable times specified in 

paragraph 1.E. of Boeing Alert Service 

Bulletin 747–53A2610, dated May 10, 2007, 

except as provided by paragraph (g) of this 

AD: Do repetitive detailed inspections for 

cracking of the aft tension tie channels from 

body station (BS) 1120 to BS 1220 and from 

BS 880 to BS 1100, and do all applicable 

corrective actions, by accomplishing all of 

the applicable actions specified in the 

Accomplishment Instructions of Boeing Alert 

Service Bulletin 747–53A2610, dated May 

10, 2007, except as provided by paragraph (h) 

of this AD. 

Exception to Compliance Times 

(g) Where Boeing Alert Service Bulletin 

747–53A2610, dated May 10, 2007, specifies 

counting the compliance time from ‘‘* * * 

after the date on this service bulletin,’’ this 

AD requires counting the compliance time 

from the effective date of this AD. 

Exception for Bolt Hole Cracks 

(h) If any crack is found in a bolt hole 

during any inspection required by this AD, 

and Boeing Alert Service Bulletin 747–

53A2610, dated May 10, 2007, specifies to 

contact Boeing for appropriate action: Before 

further flight, repair the crack using a method 

approved in accordance with the procedures 

specified in paragraph (j) of this AD. 

Optional Terminating Action 

(i) Except as provided by paragraph (h) of 

this AD, accomplishing the applicable repairs 

or modifications at all tension tie locations, 

in accordance with Part 3 of the 

Accomplishment Instructions of Boeing Alert 

Service Bulletin 747–53A2610, dated May 

10, 2007, terminates the repetitive 

inspections required by paragraph (f) of this 

AD. 

Alternative Methods of Compliance 

(AMOCs) 

(j)(1) The Manager, Seattle Aircraft 

Certification Office (ACO), FAA, has the 

authority to approve AMOCs for this AD, if 

requested in accordance with the procedures 

found in 14 CFR 39.19. 

(2) To request a different method of 

compliance or a different compliance time 

for this AD, follow the procedures in 14 CFR 

39.19. Before using any approved AMOC on 

any airplane to which the AMOC applies, 

notify your appropriate principal inspector 

(PI) in the FAA Flight Standards District 

Office (FSDO), or lacking a PI, your local 

FSDO. 

(3) An AMOC that provides an acceptable 

level of safety may be used for any repair 

required by this AD, if it is approved by an 

Authorized Representative for the Boeing 

Commercial Airplanes Delegation Option 

Authorization Organization who has been 

authorized by the Manager, Seattle ACO, to 

make those findings. For a repair method to 

be approved, the repair must meet the 

certification basis of the airplane, and the 

approval must specifically refer to this AD. 

Material Incorporated by Reference 

(k) You must use Boeing Alert Service 

Bulletin 747–53A2610, dated May 10, 2007, 

to perform the actions that are required by 

this AD, unless the AD specifies otherwise. 

The Director of the Federal Register approved 

the incorporation by reference of this 

document in accordance with 5 U.S.C. 552(a) 

and 1 CFR part 51. Contact Boeing 

Commercial Airplanes, P.O. Box 3707, 

Seattle, Washington 98124–2207, for a copy 

of this service information. You may review 

copies at the FAA, Transport Airplane 

Directorate, 1601 Lind Avenue, SW., Renton, 

Washington; or at the National Archives and 

Records Administration (NARA). For 

information on the availability of this 

material at NARA, call 202–741–6030, or go 

to: http://www.archives.gov/federal-register/ 

cfr/ibr-locations.html. 

Issued in Renton, Washington, on August 

2, 2007. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E7–15582 Filed 8–10–07; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2007–28478; Directorate 

Identifier 2007–CE–057–AD; Amendment 

39–15153; AD 2007–16–14] 

RIN 2120–AA64 

Airworthiness Directives; Taylorcraft 

A, B, and F Series Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule; request for 

comments. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for all 

Taylorcraft A, B, and F series airplanes. 

This AD requires you to initially inspect 

the left and right wing front and aft lift 

struts for corrosion and cracks, replace 

any cracked strut or strut with corrosion 

that exceeds certain limits with either 

sealed or non-sealed struts, and 

repetitively inspect any non-sealed 

struts. This AD results from inspections 


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