This section of the FEDERAL REGISTER

contains notices to the public of the proposed

issuance of rules and regulations. The

purpose of these notices is to give interested

persons an opportunity to participate in the

rule making prior to the adoption of the final

rules.

Proposed Rules Federal Register

50644 

Vol. 77, No. 163 

Wednesday, August 22, 2012 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–0880; Directorate 

Identifier 2012–CE–004–AD] 

RIN 2120–AA64 

Airworthiness Directives; Cessna 

Airplane Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for certain 

Cessna Airplane Company Model 525 

airplanes equipped with certain part 

number (P/N) air conditioning (A/C) 

compressor motors. This proposed AD 

was prompted by reports of smoke and/ 

or fire in the tailcone caused by brushes 

wearing beyond their limits on the A/C 

motor. This proposed AD would require 

inspection of the number of hours on 

the A/C compressor hour meter, 

inspection of the logbook, and 

replacement of the brushes on certain P/ 

N A/C compressor motors or 

deactivation of the A/C system until 

replacement of the brushes. This 

proposed AD also requires reporting of 

aircraft information related to the 

replacement of the brushes. We are 

proposing this AD to correct the unsafe 

condition on these products. 

DATES: We must receive comments on 

this proposed AD by October 9, 2012. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, by any of the following 

methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov. Follow the 

instructions for submitting comments. 

• Fax: 202–493–2251. 

• 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. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; or in person at the 

Docket Management Facility 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 Office 

(phone: 800–647–5527) is in the 

ADDRESSES section. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: 

Christine Abraham, Aerospace Engineer, 

Wichita Aircraft Certification Office, 

FAA, 1801 Airport Road, Room 100, 

Wichita, Kansas 67209; phone: (316) 

946–4165; fax: (316) 946–4107; email: 

WICHITA–COS@FAA.GOV. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposal. Send your comments to 

an address listed under the ADDRESSES

section. Include ‘‘Docket No. FAA– 

2012–0880; Directorate Identifier 2012– 

CE–004–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 because 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 we receive 

about this proposed AD. 

Discussion 

We received more than 10 reports of 

smoke/fire (3 reports of fire) in the 

tailcone on Cessna Aircraft Company 

(Cessna) 525, 550, and 560 airplanes, 

where investigation revealed brushes 

had worn beyond their limits on the 

part number (P/N) 1134104–1 A/C 

compressor motors. When the brush 

wears down, the rivet in the brush 

contacts the commutator, causing sparks 

(potential ignition source) and excessive 

heat build-up within the motor 

assembly. The A/C motor is located in 

the tailcone where flammable fluids are 

present (fuel lines and some hydraulics) 

on the Cessna airplanes. There is no fire 

detection or fire extinguishing 

equipment in the tailcone. 

This condition, if not corrected, could 

result in a fire in the tailcone with no 

means to detect or extinguish it. 

FAA’s Determination 

We are proposing this AD because we 

evaluated all the relevant information 

and determined the unsafe condition 

described previously is likely to exist or 

develop in other products of the same 

type design. 

Proposed AD Requirements 

This proposed AD would require 

repetitive inspection of the compressor 

hour meter on Cessna Model 525 

airplanes that have P/N 1134104–1 or 

1134104–5 A/C compressor motor 

installed; an aircraft logbook check for 

an entry for replacing the brushes, 

compressor motor, or compressor 

condenser module assembly (pallet); 

and replacement of the brushes on the 

A/C motor or deactivation of the A/C 

system with installation of a placard 

prohibiting use of the A/C system until 

replacement of the brushes. This 

proposed AD would also require, when 

the brushes are replaced, reporting of 

aircraft information related to the 

replacement of the brushes. The FAA is 

analyzing this unsafe condition on 

airplanes certificated under 14 CFR part 

25 and may take AD action on those 

airplanes. 

The reporting data required by this 

proposed AD will enable us to obtain 

better insight into brush wear. The 

reporting data will also indicate if the 

replacement intervals we established are 

adequate. After we analyze the reporting 

data received, we may take future 

rulemaking action. 

Costs of Compliance 

We estimate that this proposed AD 

affects 408 airplanes of U.S. registry. 

We estimate the following costs to 

comply with this proposed AD: 


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Federal Register / Vol. 77, No. 163 / Wednesday, August 22, 2012 / Proposed Rules 50645 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Inspect and replace brushes on the A/C 

motor.

11 work-hours × $85 per hour = $935 ......... $252 ................. $1,187 $484,296 

Return shipment of brushes to the manufacturer.$15 per return with two required returns ...... Not applicable ... 30 12,240 

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), 

(3) Will not affect intrastate aviation 

in Alaska, and 

(4) 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. 

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): 

Cessna Aircraft Company: Docket No. FAA– 

2012–0880; Directorate Identifier 2012– 

CE–004–AD. 

(a) Comments Due Date 

We must receive comments by October 9, 

2012. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Cessna Aircraft 

Company Model 525 airplanes, serial number 

(S/N) 525–0001 through 525–0558, and 525– 

0600 through 525–0701, that 

(1) are equipped with part number (P/N) 

1134104–1 or 1134104–5 air conditioning (A/ 

C) compressor motor; and 

(2) are certificated in any category. 

(d) Subject 

Joint Aircraft System Component (JASC)/ 

Air Transport Association (ATA) of America 

Code 21, Air Conditioning. 

(e) Unsafe Condition 

This AD was prompted by reports of smoke 

and/or fire in the tailcone caused by brushes 

wearing beyond their limits on the A/C 

motor. We are issuing this AD to require 

replacement of the brushes on certain P/N A/ 

C compressor motors or deactivation of the 

A/C system until replacement of the brushes. 

This AD also requires reporting of aircraft 

information related to the replacement of the 

brushes. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Inspections 

Within the next 30 days after the effective 

date of this AD or within the next 10 hours 

time-in-service (TIS) after the effective date 

of this AD, whichever occurs first, do the 

following: 

(1) Inspect the number of hours on the A/ 

C compressor hour meter; and 

(2) Check the aircraft logbook for any entry 

for replacing the A/C compressor motor 

brushes with new brushes or replacing the 

compressor motor or compressor condenser 

module assembly (pallet) with a motor or 

assembly that has new brushes. 

(i) If the logbook contains an entry for 

replacement of parts as specified in the 

paragraph above, determine the number of 

hours on the A/C compressor motor brushes 

by comparing the number of hours on the 

compressor motor since replacement and use 

this number in paragraph (h) of this AD; or 

(ii) If through the logbook check you 

cannot positively determine the number of 

hours on the A/C compressor motor brushes 

as specified in the paragraph above, you must 

use the number of hours on the A/C 

compressor hour meter to comply with the 

requirements of this AD or presume the 

brushes have over 500 hours TIS and use this 

number in paragraph (h) of this AD. 

(h) Replacement 

At the later of the times specified in 

paragraph (h)(1) and (h)(2) of this AD, using 

the hour reading on the A/C compressor hour 

meter determined in paragraph (g) of this AD, 

replace the A/C compressor motor brushes 

with new brushes. Thereafter, repeat the 

replacement of the A/C compressor motor 

brushes no later than every 500 hours TIS on 

the A/C compressor motor. Do the 

replacement following Cessna Aircraft 

Company Model 525 Maintenance Manual, 

Revision 23, dated July 1, 2012. 

(1) Before or when the A/C compressor 

motor brushes reach a total of 500 hours TIS; 

or 

(2) Before further flight after the inspection 

required in paragraph (g) of this AD. 

(i) Deactivation 

(1) In lieu of replacing the A/C compressor 

motor brushes, before or when the A/C 

compressor motor brushes reach a total of 

500 hours TIS, you may deactivate the A/C. 

Pull the vapor cycle A/C circuit breaker, 

install a placard by the A/C selection switch 

prohibiting use of the vapor cycle air 

conditioner, and document deactivation of 

the system in the aircraft logbook referring to 

this AD as the reason for deactivation. While 

the system is deactivated, aircraft operators 

must remain aware of operating temperature 

limitations as detailed in the specific 

airplane flight manual. 

(2) If you choose to deactivate the system 

and then later choose to return the A/C to 

service: Before returning the A/C system to 


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service and removing the placard, you must 

apply the inspection and replacement 

requirements of the brushes as specified in 

paragraph (g) and (h) of this AD. 

(j) Return of Replaced Parts and Reporting 

Requirement 

For the first two A/C compressor motor 

brush replacement cycles on each aircraft, 

within 30 days after the replacement or 

within 30 days after the effective date of this 

AD, whichever occurs later, send the brushes 

that were removed to Cessna Aircraft 

Company, Cessna Service Parts and 

Programs, 7121 Southwest Boulevard, 

Wichita, KS 67215. Provide the following 

information with the brushes: 

(1) The Model and S/N of the airplane; 

(2) P/N of Motor; 

(3) P/N of the brushes, if known; 

(4) The elapsed amount of motor hours 

since the last brush/motor replacement, if 

known; 

(5) If motor hours are unknown, report the 

elapsed airplane flight hours since the last 

brush/motor replacement and indicate that 

motor hours are unknown; and 

(6) Number of motor hours currently 

displayed on the pallet hour meter. 

(k) Special Flight Permit 

Special flight permits are permitted with 

the following limitation: Operation of the A/ 

C system is prohibited. 

(l) Paperwork Reduction Act Burden 

Statement 

A federal agency may not conduct or 

sponsor, and a person is not required to 

respond to, nor shall a person be subject to 

a penalty for failure to comply with a 

collection of information subject to the 

requirements of the Paperwork Reduction 

Act unless that collection of information 

displays a current valid OMB Control 

Number. The OMB Control Number for this 

information collection is 2120–0056. Public 

reporting for this collection of information is 

estimated to be approximately 5 minutes per 

response, including the time for reviewing 

instructions, completing and reviewing the 

collection of information. All responses to 

this collection of information are mandatory. 

Comments concerning the accuracy of this 

burden and suggestions for reducing the 

burden should be directed to the FAA at: 800 

Independence Ave. SW., Washington, DC 

20591, Attn: Information Collection 

Clearance Officer, AES–200. 

(m) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Wichita Aircraft 

Certification Office, 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 ACO, 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. 

(n) Related Information 

For more information about this AD, 

contact Christine Abraham, Aerospace 

Engineer, Wichita ACO, FAA, 1801 Airport 

Road, Room 100, Wichita, Kansas 67209; 

phone: (316) 946–4165; fax: (316) 946–4107; 

email: WICHITA–COS@FAA.GOV. 

Issued in Kansas City, Missouri, on August 

16, 2012. 

Earl Lawrence, 

Manager, Small Airplane Directorate, Aircraft 

Certification Service. 

[FR Doc. 2012–20694 Filed 8–21–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2012–0433; Airspace 

Docket No. 12–AAL–5] 

Proposed Establishment of Class D 

Airspace; Bryant AAF, Anchorage, AK 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: This action proposes to 

establish Class D airspace at Bryant 

Army Airfield (AAF), Anchorage AK. 

Controlled airspace is necessary due to 

an increase in the complexity, volume 

and variety of aircraft in the immediate 

vicinity of Bryant AAF. The FAA is 

proposing this action to enhance the 

safety and management of aircraft 

operations at the airport. 

DATES: Comments must be received on 

or before October 9, 2012. 

ADDRESSES: Send comments on this 

proposal to the U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC 20590; telephone (202) 

366–9826. You must identify FAA 

Docket No. FAA–2012–0433; Airspace 

Docket No. 12–AAL–5, at the beginning 

of your comments. You may also submit 

comments through the Internet at 

http://www.regulations.gov. 

FOR FURTHER INFORMATION CONTACT: 

Richard Roberts, Federal Aviation 

Administration, Operations Support 

Group, Western Service Center, 1601 

Lind Avenue SW., Renton, WA 98057; 

telephone (425) 203–4517. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

Interested parties are invited to 

participate in this proposed rulemaking 

by submitting such written data, views, 

or arguments, as they may desire. 

Comments that provide the factual basis 

supporting the views and suggestions 

presented are particularly helpful in 

developing reasoned regulatory 

decisions on the proposal. Comments 

are specifically invited on the overall 

regulatory, aeronautical, economic, 

environmental, and energy-related 

aspects of the proposal. 

Communications should identify both 

docket numbers (FAA Docket No. FAA 

2012–0433 and Airspace Docket No. 12– 

AAL–5) and be submitted in triplicate to 

the Docket Management System (see 

ADDRESSES section for address and 

phone number). You may also submit 

comments through the Internet at 

http://www.regulations.gov. 

Commenters wishing the FAA to 

acknowledge receipt of their comments 

on this action must submit with those 

comments a self-addressed stamped 

postcard on which the following 

statement is made: ‘‘Comments to FAA 

Docket No. FAA–2012–0433 and 

Airspace Docket No. 12–AAL–5’’. The 

postcard will be date/time stamped and 

returned to the commenter. 

All communications received on or 

before the specified closing date for 

comments will be considered before 

taking action on the proposed rule. The 

proposal contained in this action may 

be changed in light of comments 

received. All comments submitted will 

be available for examination in the 

public docket both before and after the 

closing date for comments. A report 

summarizing each substantive public 

contact with FAA personnel concerned 

with this rulemaking will be filed in the 

docket. 

Availability of NPRMs 

An electronic copy of this document 

may be downloaded through the 

Internet at http://www.regulations.gov. 

Recently published rulemaking 

documents can also be accessed through 

the FAA’s web page at http:// 

www.faa.gov/airports_airtraffic/ 

air_traffic/publications/ 

airspace_amendments/. 

You may review the public docket 

containing the proposal, any comments 

received, and any final disposition in 

person in the Dockets Office (see the 

ADDRESSES section for the address and 

phone number) between 9:00 a.m. and 

5:00 p.m., Monday through Friday, 

except federal holidays. An informal 

docket may also be examined during 

normal business hours at the Northwest 

Mountain Regional Office of the Federal 

Aviation Administration, Air Traffic 

Organization, Western Service Center, 


wreier-aviles on DSK7SPTVN1PROD with PROPOSALS