77586 Federal Register / Vol. 71, No. 248 / Wednesday, December 27, 2006 / Rules and Regulations 

After consideration of all relevant 

material presented, including the 

Committee’s recommendation, and 

other information, it is hereby found 

that this interim final rule, as 

hereinafter set forth, will tend to 

effectuate the declared policy of the Act. 

Pursuant to 5 U.S.C. 553, it is also 

found and determined upon good cause 

that it is impracticable, unnecessary, 

and contrary to the public interest to 

give preliminary notice prior to putting 

this rule into effect and that good cause 

exists for not postponing the effective 

date of this rule until 30 days after 

publication in the Federal Register 

because: (1) Handlers are already 

shipping potatoes from the 2006–2007 

crop and want to take advantage of the 

grade relaxation aspect of this rule as 

soon as possible; (2) handlers are aware 

of this rule, which was recommended at 

a public meeting; and (3) this rule 

provides a 60-day comment period and 

any additional comments received will 

be considered prior to finalization of 

this rule. 

List of Subjects in 7 CFR Part 948 

Marketing agreements, Potatoes, 

Reporting and recordkeeping 

requirements. 

■ For the reasons set forth in the 

preamble, 7 CFR part 948 is amended as 

follows: 

PART 948—IRISH POTATOES GROWN 

IN COLORADO 

■ 1. The authority citation for 7 CFR 

part 948 continues to read as follows: 

Authority: 7 U.S.C. 601–674. 

■ 2. In § 948.386, paragraphs (a)(3) and 

(a)(4), and the introductory text of 

paragraph (b) are revised to read as 

follows: 

§ 948.386 Handling regulation. 

* * * * * 

(a) * * * 

(3) 1 1⁄2-inch minimum to 2 1⁄4-inch 

maximum diameter (Size B). U.S. 

Commercial grade or better: Provided, 

That round, red-skinned varieties shall 

grade U.S. No. 1 or better. 

(4) 1-inch minimum diameter to 1 3⁄4- 

inch maximum diameter. U.S. 

Commercial grade or better: Provided, 

That round, red-skinned varieties shall 

grade U.S. No. 1 or better. 

* * * * * 

(b) Maturity (skinning) requirements. 

From August 1 through October 31 shall 

be: 

* * * * * 

Dated: December 21, 2006. 

Lloyd C. Day, 

Administrator, Agricultural Marketing 

Service. 

[FR Doc. 06–9897 Filed 12–21–06; 4:59 pm] 

BILLING CODE 3410–02–P 

NUCLEAR REGULATORY 

COMMISSION 

10 CFR Part 72 

RIN 3150–AH98 

List of Approved Spent Fuel Storage 

Casks: HI–STORM 100 Revision 3; 

Withdrawal of Direct Final Rule 

AGENCY: U.S. Nuclear Regulatory 

Commission. 

ACTION: Direct final rule; withdrawal. 

SUMMARY: The U.S. Nuclear Regulatory 

Commission (NRC) is withdrawing a 

direct final rule that would have revised 

the Holtec International HI–STORM 100 

cask system listing within the ‘‘List of 

Approved Spent Fuel Storage Casks’’ to 

include Amendment No. 3 to the 

Certificate of Compliance. The NRC is 

taking this action because it has 

received significant adverse comments 

in response to the direct final rule. 

These significant adverse comments 

shall be considered as comments to the 

companion proposed rule that was 

published concurrently with the direct 

final rule. 

FOR FURTHER INFORMATION CONTACT: 

Jayne M. McCausland, Office of Federal 

and State Materials and Environmental 

Management Programs, U.S. Nuclear 

Regulatory Commission, Washington, 

DC 20555, telephone (301) 415–6219 (email: jmm2@nrc.gov). 

SUPPLEMENTARY INFORMATION: On 

October 16, 2006 (71 FR 60659), the 

NRC published in the Federal Register 

a direct final rule amending its 

regulations in 10 CFR 72.214 to revise 

the Holtec International HI–STORM 100 

cask system listing within the ‘‘List of 

Approved Spent Fuel Storage Casks’’ to 

include Amendment No. 3 to the 

Certificate of Compliance Number 1014 

(CoC No. 1014). Amendment No. 3 

modifies the present cask system design 

by revising: Technical Specification 

(TS) 3.1.3 to eliminate cooling of the 

Multi-Purpose Canister (MPC) cavity 

prior to reflood with water, as part of 

cask unloading operations; TS 3.3.1 to 

allow linear interpolation between 

minimal soluble boron concentrations, 

for certain fuel enrichments in the 

MPC–32/32F; Appendix B, Section 1, to 

make modifications to the definitions of 

fuel debris, damaged fuel assembly, and 

non-fuel hardware; and Appendix B, 

Section 2, to permit the storage of 

pressurized water reactor fuel 

assemblies with annular fuel pellets in 

the top and bottom 12 inches of the 

active fuel length. Amendment No. 3 

also revises CoC No. 1014 to incorporate 

minor editorial corrections. The direct 

final rule was to become effective on 

January 2, 2007. The NRC also 

concurrently published a companion 

proposed rule on October 16, 2006 (71 

FR 60672). 

In the direct final rule, NRC stated 

that if any significant adverse comments 

were received, a notice of timely 

withdrawal of the direct final rule 

would be published in the Federal 

Register and the direct final rule would 

not take effect. 

The NRC received significant adverse 

comments on the direct final rule; 

therefore, the NRC is withdrawing the 

direct final rule. These significant 

adverse comments shall be considered 

as comments to the companion 

proposed rule that was published 

concurrently with the direct final rule. 

The NRC will not initiate a second 

comment period on the companion 

proposed rule. 

Dated at Rockville, Maryland, this 14th day 

of December, 2006. 

For the Nuclear Regulatory Commission. 

Luis A. Reyes, 

Executive Director for Operations. 

[FR Doc. E6–22109 Filed 12–26–06; 8:45 am] 

BILLING CODE 7590–01–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2006–26675; Directorate 

Identifier 2006–NM–203–AD; Amendment 

39–14864; AD 2006–26–06] 

RIN 2120–AA64 

Airworthiness Directives; Boeing 

Model 777–200 and –300 Series 

Airplanes Equipped with Rolls-Royce 

Engines 

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 777–200 and –300 series 

airplanes equipped with Rolls-Royce 

engines. This AD requires repetitive 

inspections to detect cracks of the outer 

V-blades of the thrust reverser, and 


rwilkins on PROD1PC63 with RULES
Federal Register / Vol. 71, No. 248 / Wednesday, December 27, 2006 / Rules and Regulations 77587 

corrective action if necessary. This AD 

also provides for optional terminating 

action for the repetitive inspections. 

This AD results from reports of cracked 

outer V-blades in the thrust reversers. 

We are issuing this AD to prevent 

separation of a thrust reverser from the 

airplane during normal reverse thrust or 

during a refused takeoff, which could 

result in impact damage to other 

airplane areas. If a thrust reverser 

separates from the airplane during a 

refused takeoff, the engine could 

produce forward thrust, resulting in 

unexpected thrust asymmetry and a 

possible runway excursion. 

DATES: This AD becomes effective 

January 11, 2007. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in the AD 

as of January 11, 2007. 

We must receive comments on this 

AD by February 26, 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: Docket Management Facility; 

U.S. Department of Transportation, 400 

Seventh Street SW., Nassif Building, 

Room PL–401, Washington, DC 20590. 

• Fax: (202) 493–2251. 

• Hand Delivery: Room PL–401 on 

the plaza level of the Nassif Building, 

400 Seventh Street, SW., 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: Gary 

Oltman, Aerospace Engineer, Airframe 

Branch, ANM–120S, FAA, Seattle 

Aircraft Certification Office, 1601 Lind 

Avenue, SW., Renton, Washington 

98057–3356; telephone (425) 917–6443; 

fax (425) 917–6590. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We have received reports of cracked 

outer V-blades in the Rolls-Royce engine 

thrust reversers on Boeing Model 777–

200 and –300 series airplanes. The 

cracks were found in the top and bottom 

ends of the V-blade. The outer V-blade 

engages the aft end of the engine fan 

case to transmit fore and aft loads from 

the thrust reversers. Initial analysis of 

the V-blade did not include bending 

loads, and consequently the fatigue 

margins were not sufficient. A thrust 

reverser that separates from the airplane 

during normal reverse thrust or refused 

takeoff can damage other airplane areas. 

If a thrust reverser separates from the 

airplane during a refused takeoff, the 

engine could produce forward thrust, 

resulting in unexpected thrust 

asymmetry and a possible runway 

excursion. 

Relevant Service Information 

We have reviewed Boeing Special 

Attention Service Bulletin 777–78–

0064, Revision 1, dated November 30, 

2006. The service bulletin describes 

procedures for doing repetitive detailed 

inspections to detect cracks in the outer 

V-blade of the thrust reverser, replacing 

cracked V-blades with serviceable parts, 

and sending a report of the inspection 

results to Boeing. The compliance time 

for the initial inspection ranges from 

250 to 6,000 flight cycles after the 

effective date of the AD, depending on 

the number of flight cycles on the Vblade, with repetitive intervals not to 

exceed 2,000 flight cycles from the last 

detailed inspection. 

We have also reviewed Boeing Special 

Attention Service Bulletin 777–78–

0061, dated July 6, 2006, which 

describes procedures for doing a special 

detailed inspection to detect cracks in 

the outer V-blade of the thrust reverser 

in addition to a special detailed (eddy 

current or fluorescent penetrant) 

inspection to detect cracks in the fay 

surface area of the lower chord of the 

torque box where the outer V-blade 

attaches. If a crack is found in the outer 

V-blade, a new configuration V-blade is 

installed. If no crack is found, the Vblade is changed and installed with new 

support brackets at the top and bottom 

ends. The service bulletin also specifies 

contacting Boeing for repair instructions 

for cracks found in the torque box lower 

chord. 

Accomplishment of the actions 

specified in Special Attention Service 

Bulletin 777–78–0061 eliminates the 

need for the repetitive inspections of 

Special Attention Service Bulletin 777–

78–0064. 

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. For this reason, we are issuing 

this AD to prevent separation of a thrust 

reverser from the airplane during 

normal reverse thrust or during a 

refused takeoff, which could result in 

impact damage to other airplane areas. 

If a thrust reverser separates from the 

airplane during a refused takeoff, the 

engine could produce forward thrust, 

resulting in unexpected thrust 

asymmetry and a possible runway 

excursion. This AD requires 

accomplishing the actions specified in 

Boeing Special Attention Service 

Bulletin 777–78–0064 described 

previously. This AD also provides for an 

optional terminating action for the 

repetitive inspections. 

Difference Between the AD and Service 

Information 

Boeing Special Attention Service 

Bulletin 777–78–0061 specifies to 

contact the manufacturer for 

instructions on how to repair certain 

conditions, but this AD requires 

repairing those conditions, if 

accomplished, 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 approve repair methods. 

Interim Action 

We consider this AD interim action. 

We are considering mandating the 

optional terminating action specified in 

Boeing Special Attention Service 

Bulletin 777–78–0061, which terminates 

the repetitive inspections required by 

this AD. However, the planned 

compliance time for this terminating 

action would allow enough time to 

provide notice and opportunity for prior 

public comment on the merits of the 

actions. 

FAA’s Determination of the Effective 

Date 

Since an unsafe condition exists that 

requires the immediate adoption of this 

AD, we have found that notice and 

opportunity for public comment before 

issuing this AD are impracticable, and 

that good cause exists to make this AD 

effective in less than 30 days. 

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 in the 

ADDRESSES section. Include ‘‘Docket No. 

FAA–2006–26675; Directorate Identifier 

2006–NM–203–AD’’ at the beginning of 


rwilkins on PROD1PC63 with RULES
77588 Federal Register / Vol. 71, No. 248 / Wednesday, December 27, 2006 / Rules and Regulations 

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 Management 

Facility office between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. The Docket 

Management Facility office (telephone 

(800) 647–5227) is located on the plaza 

level of the Nassif 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. 

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): 

2006–26–06 Boeing: Amendment 39–14864. 

Docket No. FAA–2006–26675; 

Directorate Identifier 2006–NM–203–AD. 

Effective Date 

(a) This AD becomes effective January 11, 

2007. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Boeing Model 777–

200 and –300 series airplanes, certificated in 

any category, equipped with Rolls-Royce 

engines; as identified in Boeing Special 

Attention Service Bulletin 777–78–0064, 

Revision 1, dated November 30, 2006. 

Unsafe Condition 

(d) This AD results from reports of cracked 

outer V-blades in the thrust reversers. We are 

issuing this AD to prevent separation of a 

thrust reverser from the airplane during 

normal reverse thrust or during a refused 

takeoff, which could result in impact damage 

to other airplane areas. If a thrust reverser 

separates from the airplane during a refused 

takeoff, the engine could produce forward 

thrust, resulting in unexpected thrust 

asymmetry and a possible runway excursion. 

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) Do the detailed inspections to detect 

cracks in the outer V-blade of the thrust 

reversers. Do the inspections in accordance 

with the Accomplishment Instructions of 

Boeing Special Attention Service Bulletin 

777–78–0064, Revision 1, dated November 

30, 2006. Do the inspections at the applicable 

times specified in paragraph 1.E. of the 

service bulletin; except, where the service 

bulletin specifies an initial compliance time 

after the date on the service bulletin, this AD 

requires compliance within the specified 

time after the effective date of this AD. Do 

applicable corrective actions before further 

flight in accordance with the service bulletin 

or paragraph (h) of this AD. 

(g) Actions done before the effective date 

of this AD in accordance with Boeing Special 

Attention Service Bulletin 777–78–0064, 

dated August 7, 2006, are acceptable for 

compliance with the requirements of 

paragraph (f) of this AD. 

Report 

(h) At the applicable time specified in 

paragraph (h)(1) or (h)(2) of this AD, send a 

report of the findings (both positive and 

negative) of each inspection required by 

paragraph (f) of this AD to the Manager, 

Seattle Aircraft Certification Office (ACO), 

FAA. The report must include the 

information specified in Appendix A of 

Boeing Special Attention Service Bulletin 

777–78–0064, Revision 1, dated November 

30, 2006. Under the provisions of the 

Paperwork Reduction Act (44 U.S.C. 3501 et 

seq.), the Office of Management and Budget 

(OMB) has approved the information 

collection requirements contained in this AD 

and has assigned OMB Control Number 

2120–0056. 

(1) For all inspections done after the 

effective date of this AD: Send the report 

within 10 days after the inspection. 

(2) For any inspection done before the 

effective date of this AD: Send the report 

within 10 days after the effective date of this 

AD. 

Optional Terminating Action 

(i) Accomplishment of the applicable 

inspections and related investigative/ 

corrective actions, in accordance with the 

Accomplishment Instructions of Boeing 

Special Attention Service Bulletin 777–78–

0061, dated July 6, 2006, terminates the 

requirements of this AD; except, where the 

service bulletin specifies to contact the 

manufacturer for appropriate action, repair 

before further flight using a method approved 

in accordance with the procedures specified 

in paragraph (j) of this AD. 


rwilkins on PROD1PC63 with RULES
Federal Register / Vol. 71, No. 248 / Wednesday, December 27, 2006 / Rules and Regulations 77589 

Alternative Methods of Compliance 

(AMOCs) 

(j)(1) The Manager, Seattle 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) Before using any AMOC approved in 

accordance with § 39.19 on any airplane to 

which the AMOC applies, notify the 

appropriate principal inspector in the FAA 

Flight Standards Certificate Holding District 

Office. 

(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. 

Material Incorporated by Reference 

(k) You must use Boeing Special Attention 

Service Bulletin 777–78–0064, Revision 1, 

dated November 30, 2006, to perform the 

actions that are required by this AD, unless 

the AD specifies otherwise. If the optional 

terminating action is accomplished, you must 

use Boeing Special Attention Service Bulletin 

777–78–0061, dated July 6, 2006, to perform 

the optional terminating actions specified in 

this AD, unless the AD specifies otherwise. 

The Director of the Federal Register approved 

the incorporation by reference of these 

documents 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 Docket Management Facility, 

U.S. Department of Transportation, 400 

Seventh Street SW., Room PL–401, Nassif 

Building, Washington, DC; on the Internet at 

http://dms.dot.gov; or at the National 

Archives and Records Administration 

(NARA). For information on the availability 

of this material at the NARA, call (202) 741–

6030, or go to http://www.archives.gov/

federal_register/code_of_federal_regulations/

ibr_locations.html. 

Issued in Renton, Washington, on 

December 14, 2006. 

Stephen P. Boyd, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. E6–22040 Filed 12–26–06; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2006–23659; Directorate 

Identifier 2005–NM–236–AD; Amendment 

39–14863; AD 2006–26–05] 

RIN 2120–AA64 

Airworthiness Directives; Fokker 

Model F27 Mark 100, 200, 300, 400, 500, 

600, and 700 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for all 

Fokker Model F27 Mark 100, 200, 300, 

400, 500, 600, and 700 airplanes. This 

AD requires revising the Limitations 

section of the airplane flight manual 

regarding the use of continuous ignition, 

fuel filter heating, and resetting circuit 

breakers during flight in certain 

conditions such as icing. This AD 

results from reports of power loss on 

one or both engines in icing conditions. 

We are issuing this AD to advise the 

flightcrew that continuous ignition will 

not reduce the probability of power loss, 

and what action they must take to avoid 

this hazard. Loss of power in one or 

more engines during flight, if not 

prevented, could result in loss of control 

of the airplane. 

DATES: This AD becomes effective 

January 31, 2007. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in the AD 

as of January 31, 2007. 

ADDRESSES: You may examine the AD 

docket on the Internet at http:// 

dms.dot.gov or in person at the Docket 

Management Facility, U.S. Department 

of Transportation, 400 Seventh Street, 

SW., Nassif Building, Room PL–401, 

Washington, DC. 

Contact Fokker Services B.V., P.O. 

Box 231, 2150 AE Nieuw-Vennep, the 

Netherlands, for service information 

identified in this AD. 

FOR FURTHER INFORMATION CONTACT: Tom 

Rodriguez, Aerospace Engineer, 

International Branch, ANM–116, FAA, 

Transport Airplane Directorate, 1601 

Lind Avenue, SW., Renton, Washington 

98057–3356; telephone (425) 227–1137; 

fax (425) 227–1149. 

SUPPLEMENTARY INFORMATION: 

Examining the Docket 

You may examine the airworthiness 

directive (AD) docket on the Internet at 

http://dms.dot.gov or in person at the 

Docket Management Facility office 

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

through Friday, except Federal holidays. 

The Docket Management Facility office 

(telephone (800) 647–5227) is located on 

the plaza level of the Nassif Building at 

the street address stated in the 

ADDRESSES section. 

Discussion 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an AD that would 

apply to all Fokker Model F27 Mark 

100, 200, 300, 400, 500, 600, and 700 

airplanes. That NPRM was published in 

the Federal Register on January 24, 

2006 (71 FR 3792). That NPRM 

proposed to require revising the 

Limitations section of the airplane flight 

manual regarding the use of continuous 

ignition, fuel filter heating, and resetting 

circuit breakers during flight in certain 

conditions such as icing. 

Comments 

We provided the public the 

opportunity to participate in the 

development of this AD. We received no 

comments on the NPRM or on the 

determination of the cost to the public. 

Clarification of Note 1 

Note 1 of the NPRM stated that the 

revision to the Limitations section of the 

Fokker F27 Airplane Flight Manual 

(AFM) could be done by inserting a 

copy of Manual Change Notification—

Operational Documentation (MCNO) 

MCNO–F27–020, dated June 1, 2004, 

into the Normal Procedures, Abnormal 

Procedures, and Emergency Procedures 

sections of the Fokker F27 AFM. We 

have clarified Note 1 of this AD to state 

that the revision can be done by 

inserting a copy of that MCNO into the 

Limitations section, as specified in 

paragraph (f) of this AD. 

Conclusion 

We have carefully reviewed the 

available data, and determined that air 

safety and the public interest require 

adopting the AD with the change 

described previously. We have 

determined that this change will neither 

increase the economic burden on any 

operator nor increase the scope of the 

AD. 

Costs of Compliance 

This AD affects about 27 airplanes of 

U.S. registry. The revision takes about 1 

work hour per airplane, at an average 

labor rate of $65 per work hour. Based 

on these figures, the estimated cost of 

the AD for U.S. operators is $1,755, or 

$65 per airplane. 


rwilkins on PROD1PC63 with RULES