Federal Register / Vol. 77, No. 38 / Monday, February 27, 2012 / Proposed Rules 11421 

that could jeopardize flight safety. We are 

issuing this AD to eliminate this hazard and 

ensure that all lavatories have a 

supplemental oxygen supply. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Restatement of Requirements of AD 2011– 

04–09, Amendment 39–16630 (76 FR 12556, 

March 8, 2011): Oxygen Generator 

Deactivation 

Within 21 days after March 14, 2011 (the 

effective date of AD 2011–04–09, 

Amendment 39–16630 (76 FR 12556, March 

8, 2011)), do the actions specified in 

paragraphs (g)(1) and (g)(2) of this AD. 

(1) Activate all chemical oxygen generators 

in the lavatories until the generator oxygen 

supply is expended. An operator may also 

remove the oxygen generator(s), in 

accordance with existing maintenance 

practice, in lieu of activating it. 

(2) For each chemical oxygen generator, 

after the generator is expended (or removed), 

remove or re-stow the oxygen masks and 

close the mask dispenser door. 

Note 1 to paragraph (g) of this AD: 

Chemical oxygen generators are considered a 

hazardous material and subject to specific 

requirements under Title 49 CFR for 

shipping. Oxygen generators must be 

expended prior to disposal but are 

considered a hazardous waste; therefore, 

disposal must be in accordance with all 

Federal, State, and local regulations. 

Expended oxygen generators are forbidden in 

air transportation as cargo. For more 

information, contact 1–800–HMR–4922. 

Note 2 to paragraph (g) of this AD: Design 

approval holders are not expected to release 

service instructions for the action specified 

in paragraph (g) of this AD. 

(h) Restatement of Requirements of AD 

2011–04–09, Amendment 39–16630 (76 FR 

12556, March 8, 2011): Compliance With 

Federal Aviation Regulations 

Notwithstanding the requirements of 

Sections 25.1447, 121.329, 121.333, and 

129.13 of the Federal Aviation Regulations 

(14 CFR 25.1447, 121.329, 121.333, and 

129.13), operators complying with this AD 

are authorized to operate affected airplanes 

until accomplishment of the actions specified 

in paragraph (k) of this AD. 

(i) Restatement of Requirements of AD 2011– 

04–09, Amendment 39–16630 (76 FR 12556, 

March 8, 2011): Parts Installation 

After March 14, 2011, and until 

accomplishment of the actions specified in 

paragraph (k) of this AD, no person may 

install a chemical oxygen generator in any 

lavatory on any affected airplane. 

(j) Restatement of Requirements of AD 2011– 

04–09, Amendment 39–16630 (76 FR 12556, 

March 8, 2011): Special Flight Permit 

Special flight permits, as described in 

Section 21.197 and Section 21.199 of the 

Federal Aviation Regulations (14 CFR 21.197 

and 21.199), are not allowed for the 

accomplishment of the actions specified in 

paragraph (g) of this AD. 

(k) New Requirements of This AD: Oxygen 

System Restoration 

Within 24 months after the effective date 

of this AD, install a supplemental oxygen 

system that meets the requirements of 

Sections 25.1447, 121.329, 121.333, and 

129.13 of the Federal Aviation Regulations 

(14 CFR 25.1447, 121.329, 121.333, and 

129.13) in each lavatory, as specified in 

paragraph (k)(1) or (k)(2) of this AD, as 

applicable. 

(1) If compliance with paragraph (k) of this 

AD is achieved using a chemical oxygen 

generator, the actions specified in paragraph 

(k) of this AD must be done in accordance 

with a method approved by the Manager of 

the responsible FAA oversight office having 

responsibility over the modification. For a 

method to be approved, it must meet the 

certification basis of the airplane, and the 

approval must specifically refer to this AD. 

(2) If compliance with paragraph (k) of this 

AD is achieved without a chemical oxygen 

generator, the specifications of paragraphs 

(k)(2)(i) and (k)(2)(ii) of this AD apply. 

(i) The modification must receive FAA 

approval in accordance with 14 CFR part 21 

as a major design change. Notwithstanding 

operations specification restrictions to the 

contrary, organizational approval holders 

may exercise their full authority in approving 

installations that meet the installation 

requirements of this AD. 

(ii) Deviation from approved service 

instructions and subsequent modifications 

may be handled by normal operator 

procedures without requiring approval of an 

alternative method of compliance. 

(l) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Transport Standards 

Staff, ANM–110, FAA, has the authority to 

approve AMOCs for this AD, if requested 

using the procedures found in 14 CFR 39.19. 

In accordance with 14 CFR 39.19, send your 

request to your principal inspector or local 

Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the Transport Standards 

Staff, send it to the attention of the person 

identified in the Related Information section 

of this AD. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(m) Related Information 

For more information about this AD, 

contact Jeff Gardlin, Aerospace Engineer, 

Airframe and Cabin Safety Branch, ANM– 

115, FAA, Transport Airplane Directorate, 

1601 Lind Avenue SW., Renton, Washington 

98057–3356; phone: 425–227–2136; fax: 425– 

227–1149; email: jeff.gardlin@faa.gov. 

Issued in Renton, Washington, on January 

27, 2012. 

Ali Bahrami, 

Manager,Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2012–4031 Filed 2–24–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–0071; Directorate 

Identifier 2012–NE–05–AD] 

RIN 2120–AA64 

Airworthiness Directives; Pratt & 

Whitney Canada, Auxiliary Power Units 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for certain 

serial numbers of Pratt & Whitney 

Canada (P&WC) PW901A auxiliary 

power units (APUs) approved under 

Technical Standard Order TSO–C77A 

and installed on, but not limited to, 

Boeing 747–400 series airplanes. This 

proposed AD was prompted by several 

events of high-pressure turbine blade 

fracture leading to separation of the rear 

gas generator case and release of high 

energy debris. This proposed AD would 

require modifications of the rear gas 

generator case, exhaust duct support, 

and turbine exhaust duct flanges. We 

are proposing this AD to prevent 

separation of the rear gas generator case 

and release of high energy debris, which 

could result in injury and damage to the 

airplane. 

DATES: We must receive comments on 

this proposed AD by April 27, 2012. 

ADDRESSES: You may send comments by 

any of the following methods: 

• 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 service information identified in 

this proposed AD, contact Pratt & 

Whitney Canada Corp., 1000 MarieVictorin, Longueuil, Quebec, Canada 

J4G 1A1; phone: 450–677–9411. You 

may review copies of the referenced 

service information at the FAA, Engine 

& Propeller Directorate, 12 New England 

Executive Park, Burlington, MA. For 

information on the availability of this 

material at the FAA, call 781–238–7125. 

mstockstill on DSK4VPTVN1PROD with PROPOSALS

11422 Federal Register / Vol. 77, No. 38 / Monday, February 27, 2012 / Proposed Rules 

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 (phone: 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. 

FOR FURTHER INFORMATION CONTACT: 

Mazdak Hobbi, Aerospace Engineer, 

New York Aircraft Certification Office, 

FAA, Engine & Propeller Directorate, 

1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; phone: 516–228– 

7330; fax: 516–794–5531; email: 

mazdak.hobbi@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposed AD. Send your comments 

to an address listed under the 

ADDRESSES section. Include ‘‘Docket No. 

FAA–2012–0071; Directorate Identifier 

2012–NE–05–AD’’ at the beginning of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of this proposed AD. We will 

consider all comments received by the 

closing date and may amend this 

proposed AD based on 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). 

Discussion 

Transport Canada, which is the 

aviation authority for Canada, has 

issued Canada AD CF–2011–40, dated 

October 26, 2011 (referred to after this 

as ‘‘the MCAI’’), to correct an unsafe 

condition for the specified products. 

The MCAI states: 

The PW901A Auxiliary Power Units have 

experienced several events of High Pressure 

Turbine (HPT) blade fracture, some of which 

have resulted in the separation of the rear gas 

generator case, exhaust duct support, the 

turbine exhaust duct flanges and the release 

of high energy debris. Subsequent 

investigation revealed the turbine exhaust 

duct can separate under excessive load 

conditions resulting from extreme engine 

distress such as HPT blade fractures. 

You may obtain further information by 

examining the MCAI in the AD docket. 

Relevant Service Information 

P&WC has issued Service Bulletin No. 

A16255R2, dated March 1, 2011. The 

actions described in this service 

information are intended to correct the 

unsafe condition identified in the 

MCAI. 

FAA’s Determination and Requirements 

of This Proposed AD 

These APUs have been approved by 

Canada, and are approved for operation 

in the United States. Pursuant to our 

bilateral agreement with Canada, they 

have notified us of the unsafe condition 

described in the MCAI and service 

information referenced above. We are 

proposing this AD because we evaluated 

all information provided by Canada, and 

determined the unsafe condition exists 

and is likely to exist or develop on other 

APUs of the same type design. This 

proposed AD would require 

modification of the APU rear gas 

generator case, exhaust duct support, 

and turbine exhaust duct flanges. 

Costs of Compliance 

Based on the service information, we 

estimate that this proposed AD would 

affect about 135 APUs installed on 

airplanes of U.S. registry. The average 

labor rate is $85 per work-hour. 

Required parts would cost about 

$39,899 per APU. Based on these 

figures, we estimate the cost of the 

proposed AD on U.S. operators to be 

$5,386,365. 

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 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 this proposed 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 proposed AD and placed it in the 

AD docket. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA 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 adding 

the following new airworthiness 

directive (AD): 

Pratt & Whitney Canada: Docket No. FAA– 

2012–0071; Directorate Identifier 2012– 

NE–05–AD. 

(a) Comments Due Date 

We must receive comments by April 27, 

2012. 

(b) Affected ADs 

None. 

mstockstill on DSK4VPTVN1PROD with PROPOSALS

Federal Register / Vol. 77, No. 38 / Monday, February 27, 2012 / Proposed Rules 11423 

(c) Applicability 

This AD applies to Pratt & Whitney Canada 

(P&WC) PW901A auxiliary power units 

(APUs) approved under Technical Standard 

Order TSO–C77A and installed on, but not 

limited to, Boeing 747–400 series airplanes. 

The affected APU serial numbers are PCE 

900001 through PCE 900776 inclusive. 

(d) Reason 

This AD was prompted by several events 

of high-pressure turbine blade fracture 

leading to separation of the rear gas generator 

case and release of high energy debris. We 

are issuing this AD to prevent separation of 

the rear gas generator case and release of high 

energy debris, which could result in injury 

and damage to the airplane. 

(e) Actions and Compliance 

Unless already done, do the following 

actions. 

(1) Within 42 months after the effective 

date of this AD or the first time any 

maintenance is done other than preventative 

maintenance, whichever occurs first, modify 

the rear gas generator case, exhaust duct 

support, and turbine exhaust duct flanges. 

(2) Use paragraphs 3.A. through 3.B(3)(f) of 

Accomplishment Instructions, and paragraph 

4.A. of Appendix, of P&WC Service Bulletin 

(SB) No. A16255R2, dated March 1, 2011, to 

do the modifications. 

(f) Credit for Previous Action 

APUs modified previously using P&WC SB 

No. A16255R1, dated September 12, 2008, or 

P&WC SB No. A16255, dated December 12, 

2007, meet the modification requirements of 

this AD. 

(g) Alternative Methods of Compliance 

(AMOCs) 

The Manager, New York Aircraft 

Certification Office, FAA, may approve 

AMOCs for this AD. Use the procedures 

found in 14 CFR 39.19 to make your request. 

(h) Related Information 

(1) For more information about this AD, 

contact Mazdak Hobbi, Aerospace Engineer, 

New York Aircraft Certification Office, FAA, 

Engine & Propeller Directorate, 1600 Stewart 

Avenue, Suite 410, Westbury, NY 11590; 

phone: 516–228–7330; fax: 516–794–5531; 

email: mazdak.hobbi@faa.gov. 

(2) Refer to Transport Canada AD CF– 

2011–40, dated October 26, 2011, and P&WC 

SB No. A16255R2, dated March 1, 2011, for 

related information. 

(3) For service information identified in 

this AD, contact Pratt & Whitney Canada 

Corp., 1000 Marie-Victorin, Longueuil, 

Quebec, Canada J4G 1A1; phone: 450–677– 

9411. You may review copies of the 

referenced service information at the FAA, 

Engine & Propeller Directorate, 12 New 

England Executive Park, Burlington, MA. For 

information on the availability of this 

material at the FAA, call 781–238–7125. 

Issued in Burlington, Massachusetts, on 

February 17, 2012. 

Peter A. White, 

Manager, Engine & Propeller Directorate, 

Aircraft Certification Service. 

[FR Doc. 2012–4448 Filed 2–24–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF HOMELAND 

SECURITY 

Coast Guard 

33 CFR Part 165 

[Docket No. USCG–2012–0001] 

RIN 1625–AA00 

Safety Zone; Magothy River, Sillery 

Bay, MD 

AGENCY: Coast Guard, DHS. 

ACTION: Notice of proposed rulemaking. 

SUMMARY: The Coast Guard proposes to 

establish a safety zone in certain waters 

of the Magothy River, in Sillery Bay, 

Maryland. This safety zone is necessary 

to provide for the safety of life, property 

and the environment. This safety zone 

restricts the movement of vessels 

throughout the regulated area during 

The Bumper Bash, held annually on the 

fourth Saturday of July. 

DATES: Comments and related material 

must be received by the Coast Guard on 

or before March 28, 2012. Requests for 

public meetings must be received by the 

Coast Guard on or before March 12, 

2012. 

ADDRESSES: You may submit comments 

identified by docket number USCG– 

2012–0001 using any one of the 

following methods: 

(1) Federal eRulemaking Portal: 

http://www.regulations.gov. 

(2) Fax: 202–493–2251. 

(3) Mail: Docket Management Facility 

(M–30), U.S. Department of 

Transportation, West Building Ground 

Floor, Room W12–140, 1200 New Jersey 

Avenue SE., Washington, DC 20590– 

0001. 

(4) Hand delivery: Same as mail 

address above, between 9 a.m. and 

5 p.m., Monday through Friday, except 

Federal holidays. The telephone number 

is 202–366–9329. 

To avoid duplication, please use only 

one of these four methods. See the 

‘‘Public Participation and Request for 

Comments’’ portion of the 

SUPPLEMENTARY INFORMATION section 

below for instructions on submitting 

comments. 

FOR FURTHER INFORMATION CONTACT: If 

you have questions on this proposed 

rule, call or email Mr. Ronald Houck, 

Sector Baltimore Waterways 

Management Division, Coast Guard; 

telephone 410–576–2674, email 

Ronald.L.Houck@uscg.mil. If you have 

questions on viewing or submitting 

material to the docket, call Renee V. 

Wright, Program Manager, Docket 

Operations, telephone 202–366–9826. 

SUPPLEMENTARY INFORMATION: 

Public Participation and Request for 

Comments 

We encourage you to participate in 

this rulemaking by submitting 

comments and related materials. All 

comments received will be posted 

without change to http:// 

www.regulations.gov and will include 

any personal information you have 

provided. 

Submitting comments 

If you submit a comment, please 

include the docket number for this 

rulemaking (USCG–2012–0001), 

indicate the specific section of this 

document to which each comment 

applies, and provide a reason for each 

suggestion or recommendation. You 

may submit your comments and 

material online (via http:// 

www.regulations.gov) or by fax, mail, or 

hand delivery, but please use only one 

of these means. If you submit a 

comment online via 

www.regulations.gov, it will be 

considered received by the Coast Guard 

when you successfully transmit the 

comment. If you fax, hand deliver, or 

mail your comment, it will be 

considered as having been received by 

the Coast Guard when it is received at 

the Docket Management Facility. We 

recommend that you include your name 

and a mailing address, an email address, 

or a telephone number in the body of 

your document so that we can contact 

you if we have questions regarding your 

submission. 

To submit your comment online, go to 

http://www.regulations.gov, click on the 

‘‘submit a comment’’ box, which will 

then become highlighted in blue. In the 

‘‘Document Type’’ drop down menu 

select ‘‘Proposed Rule’’ and insert 

‘‘USCG–2012–0001’’ in the ‘‘Keyword’’ 

box. Click ‘‘Search’’ then click on the 

balloon shape in the ‘‘Actions’’ column. 

If you submit your comments by mail or 

hand delivery, submit them in an 

unbound format, no larger than 81⁄2 by 

11 inches, suitable for copying and 

electronic filing. If you submit 

comments by mail and would like to 

know that they reached the Facility, 

please enclose a stamped, self-addressed 

postcard or envelope. We will consider 

all comments and material received 

mstockstill on DSK4VPTVN1PROD with PROPOSALS