34390 Federal Register / Vol. 75, No. 116 / Thursday, June 17, 2010 / Proposed Rules 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2005–22690; Directorate 

Identifier 2005–NE–35–AD 

RIN 2120–AA64 

Airworthiness Directives; McCauley 

Propeller Systems Five-Blade Propeller 

Assemblies 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to 

supersede an existing airworthiness 

directive (AD) for certain McCauley 

Propeller Systems propeller assemblies. 

That AD currently requires removing 

certain propeller hubs from service at 

new, reduced life limits and eddy 

current inspections (ECIs) of the 

propeller hub. This proposed AD would 

require removing certain propeller hubs 

from service before they exceed 6,000 

hours time-since-new (TSN). This 

proposed AD results from a report of a 

crack in a propeller hub. We are 

proposing this AD to prevent cracked 

propeller hubs, which could cause 

failure of the propeller hub, blade 

separation, and loss of control of the 

airplane. 

DATES: We must receive any comments 

on this proposed AD by August 16, 

2010. 

ADDRESSES: Use one of the following 

addresses to comment on this proposed 

AD. 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov and follow 

the instructions for sending your 

comments electronically. 

• Mail: Docket Management Facility, 

U.S. Department of Transportation, 1200 

New Jersey Avenue SE., West Building 

Ground Floor, Room W12–140, 

Washington, DC 20590–0001. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

• Fax: (202) 493–2251. 

FOR FURTHER INFORMATION CONTACT: Jeff 

Janusz, Aerospace Engineer, Wichita 

Aircraft Certification Office, FAA, Small 

Airplane Directorate, 1801 Airport 

Road, Room 100, Wichita, KS 67209, 

telephone: (316) 946–4148; fax: (316) 

946–4107. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments 

regarding this proposal. Send your 

comments to an address listed under 

ADDRESSES. Include ‘‘Docket No. FAA– 

2005–22690; Directorate Identifier 

2005–NE–35–AD’’ in the subject line of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of the proposed AD. We will 

consider all comments received by the 

closing date and may amend the 

proposed AD in light of those 

comments. 

We will post all comments we 

receive, without change, to http:// 

www.regulations.gov, including any 

personal information you provide. We 

will also post a report summarizing each 

substantive verbal contact with FAA 

personnel concerning this proposed AD. 

Using the search function of the Web 

site, anyone can find and read the 

comments in any of our dockets, 

including, if provided, 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). 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; or in person at the 

Docket Operations office between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. The AD docket 

contains this proposed AD, the 

regulatory evaluation, any comments 

received, and other information. The 

street address for the Docket Operations 

office (telephone (800) 647–5527) is the 

same as the Mail address provided in 

the ADDRESSES section. Comments will 

be available in the AD docket shortly 

after receipt. 

Discussion 

The FAA proposes to amend 14 CFR 

part 39 by superseding AD 2005–24–08, 

Amendment 39–14388. (70 FR 71756, 

November 30, 2005). That AD requires: 

• Removing any propeller hub from 

service that is currently, or ever was, 

operated on an engine with a watermethanol assist system, not later than 

6,000 hours time-in-service (TIS). 

• Removing any other propeller hub 

from service not later than 18,000 hours 

TIS. 

• Removing any propeller hub from 

service that exceeds its life limit on the 

effective date of this AD, within 50 

hours TIS after the effective date of this 

AD. 

• That any propeller hub removed 

from service after exceeding its life limit 

must not be returned to service on any 

installation. 

• For all installed propeller hubs, 

performing an ECI within 200 hours TIS 

or 60 days after the effective date of this 

AD, whichever occurs first. 

• Thereafter, for all installed 

propeller hubs with 12,000 or more 

hours TIS, performing repetitive ECIs 

within 1,800 hours TIS or 12 months, 

whichever occurs first. 

That AD was the result of three 

reports of cracked propeller hubs. That 

condition, if not corrected, could result 

in failure of the propeller hub, blade 

separation, and loss of control of the 

airplane. 

Actions Since AD 2005–24–08 Was 

Issued 

Since that AD was issued, we 

received a report of a cracked propeller 

hub. The cracked hub was found during 

the propeller inspection or overhaul 

processes on a propeller assembly 

removed from a Jetstream 41 airplane. 

The cracked hub has 7,807 hours TSN. 

The life limit of the hub is 18,000 hours 

TSN. The crack was found on the rear 

of the hub, on the propeller mounting 

flange. The crack originated from the 

bottom of a large (0.63-inch) dowel hole. 

To date, we have received no other field 

reports of cracked hubs or occurrences 

of propeller hub failure and separation 

attributed to this particular unsafe 

condition. 

Relevant Service Information 

We reviewed and approved the 

technical contents of McCauley Alert 

Service Bulletin (ASB) No. ASB250A, 

dated February 12, 2010. This ASB 

introduces new lower life limits for the 

propeller hubs identified in this AD. 

FAA’s Determination and Requirements 

of the Proposed AD 

We have evaluated all pertinent 

information and identified an unsafe 

condition that is likely to exist or 

develop on other products of this same 

type design. For that reason, we are 

proposing this AD, which would 

require: 

• Removing from service the hub of 

any propeller assembly, P/N 

B5JFR36C1101/114GCA–0, 

C5JFR36C1102/L114GCA–0, 

B5JFR36C1103/114HCA–0, or 

C5JFR36C1104/L114HCA–0, if the hub 

exceeds 6,000 hours TSN on the 

effective date of this AD, within 250 

hours TIS after the effective date of this 

AD. 


emcdonald on DSK2BSOYB1PROD with PROPOSALS
Federal Register / Vol. 75, No. 116 / Thursday, June 17, 2010 / Proposed Rules 34391 

• Removing from service the hub of 

any propeller assembly, P/N 

B5JFR36C1101/114GCA–0, 

C5JFR36C1102/L114GCA–0, 

B5JFR36C1103/114HCA–0, or 

C5JFR36C1104/L114HCA–0, if the hub 

has fewer than 6,000 hours TSN, not 

later than 6,000 hours TSN. 

The proposed AD would require that 

you do these actions using the service 

information described previously. 

Costs of Compliance 

We estimate that this proposed AD 

would affect 30 propeller assemblies 

installed on airplanes of U.S. registry. 

We also estimate that it would take 

about 42 work-hours per propeller 

assembly to perform the proposed 

actions, and that the average labor rate 

is $85 per work-hour. Required parts 

would cost about $6,000 per propeller 

assembly. Based on these figures, we 

estimate the total cost of the proposed 

AD to U.S. operators to be $287,100. 

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 

proposed AD would not have federalism 

implications under Executive Order 

13132. This proposed AD would 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 proposed AD: 

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. Would 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 proposed AD. 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, Safety. 

The Proposed Amendment 

Under the authority delegated to me 

by the Administrator, the Federal 

Aviation Administration proposes to 

amend 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 FAA amends § 39.13 by 

removing Amendment 39–14388. (70 FR 

71756, November 30, 2005) and by 

adding a new airworthiness directive to 

read as follows: 

McCauley Propeller Systems: Docket No. 

FAA–2005–22690; Directorate Identifier 

2005–NE–35–AD. 

Comments Due Date 

(a) The Federal Aviation Administration 

(FAA) must receive comments on this 

airworthiness directive (AD) action by 

August 16, 2010. 

Affected ADs 

(b) This AD supersedes AD 2005–24–08, 

Amendment 39–14388. 

Applicability 

(c) This AD applies to McCauley Propeller 

Systems propeller assemblies, part numbers 

(P/Ns) B5JFR36C1101/114GCA–0, 

C5JFR36C1102/L114GCA–0, B5JFR36C1103/ 

114HCA–0, and C5JFR36C1104/L114HCA–0. 

These propeller assemblies are installed on 

BAE Systems (Operations) Limited Jetstream 

Model 4100 series airplanes. 

Unsafe Condition 

(d) This AD results from a report of a 

cracked propeller hub. We are issuing this 

AD to prevent cracked propeller hubs, which 

could cause failure of the propeller hub, 

blade separation, and loss of control 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. 

Propeller Hub Reduced Life Limits 

(f) For any propeller assembly, P/N 

B5JFR36C1101/114GCA–0, C5JFR36C1102/ 

L114GCA–0, B5JFR36C1103/114HCA–0, or 

C5JFR36C1104/L114HCA–0, with a hub that 

exceeds 6,000 hours time-since-new (TSN) 

on the effective date of this AD, remove the 

propeller hub from service within 250 hours 

time-in-service after the effective date of this 

AD. 

(g) For any propeller assembly, P/N 

B5JFR36C1101/114GCA–0, C5JFR36C1102/ 

L114GCA–0, B5JFR36C1103/114HCA–0, or 

C5JFR36C1104/L114HCA–0, with a hub with 

fewer than 6,000 hours TSN, remove the 

propeller hub from service not later than 

6,000 hours TSN. 

Prohibition of Hubs Exceeding Life Limit 

(h) After the effective date of this AD, don’t 

install any hub removed from any propeller 

assembly that was removed by paragraphs (f) 

or (g) of this AD into any propeller assembly. 

Alternative Methods of Compliance 

(i) The Manager, Wichita Aircraft 

Certification Office, has the authority to 

approve alternative methods of compliance 

for this AD if requested using the procedures 

found in 14 CFR 39.19. 

Related Information 

(j) Contact Jeff Janusz, Aerospace Engineer, 

Wichita Aircraft Certification Office, FAA, 

Small Airplane Directorate, 1801 Airport 

Road, Room 100, Wichita, KS 67209, 

telephone: (316) 946–4148; fax: (316) 946– 

4107, for more information about this AD. 

Issued in Burlington, Massachusetts, on 

June 14, 2010. 

Peter A. White, 

Assistant Manager, Engine and Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. 2010–14706 Filed 6–16–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2010–0407; Airspace 

Docket No. 10–AGL–7] 

Proposed Amendment of Class E 

Airspace; Williston, ND 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: This action proposes to 

amend Class E airspace at Williston, 

ND. Additional controlled airspace is 

necessary to accommodate new 

Standard Instrument Approach 

Procedures (SIAPs) at Sloulin Field 

International Airport, Williston, ND. 

The FAA is taking this action to 

enhance the safety and management of 


emcdonald on DSK2BSOYB1PROD with PROPOSALS