72778 Federal Register / Vol. 77, No. 235 / Thursday, December 6, 2012 / Proposed Rules 

(i) EMBRAER Service Bulletin 170–52– 

0055, Revision 01, dated August 1, 2011. 

(ii) EMBRAER Service Bulletin 190–52– 

0038, Revision 01, dated August 1, 2011. 

(iii) EMBRAER Service Bulletin 190LIN– 

52–0020, dated August 1, 2011. 

(2) For service information identified in 

this AD, contact Embraer S.A., Technical 

Publications Section (PC 060), Av. Brigadeiro 

Faria Lima, 2170—Putim—12227–901 Sa ̃o 

Jose dos Campos—SP—BRASIL; telephone 

+55 12 3927–5852 or +55 12 3309–0732; fax 

+55 12 3927–7546; email 

distrib@embraer.com.br; Internet http:// 

www.flyembraer.com. You may review copies 

of the referenced service information at the 

FAA, Transport Airplane Directorate, 1601 

Lind Avenue SW., Renton, WA. For 

information on the availability of this 

material at the FAA, call 425–227–1221. 

Issued in Renton, Washington, on 

November 29, 2012. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2012–29460 Filed 12–5–12; 8:45 am] 

BILLING CODE 4910–13–P 

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 

Aircraft Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Supplemental notice of 

proposed rulemaking (NPRM); 

reopening of comment period. 

SUMMARY: We are revising an earlier 

proposed airworthiness directive (AD) 

for certain Cessna Aircraft Company 

(Cessna) Model 525 airplanes equipped 

with certain part number (P/N) air 

conditioning (A/C) compressor motors. 

That NPRM proposed to 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 and also 

require reporting of aircraft information 

related to the replacement of the 

brushes. That NPRM 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 action revises that NPRM by 

providing correct steps for deactivation 

of the A/C compressor motor. We are 

proposing this supplemental NPRM to 

correct the unsafe condition on these 

products. Since these actions impose an 

additional burden over that proposed in 

the NPRM, we are reopening the 

comment period to allow the public the 

chance to comment on these proposed 

changes. 

DATES: We must receive comments on 

this supplemental NPRM by January 22, 

2013. 

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: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC 20590, 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 proposed AD. 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 issued an NPRM to amend 14 CFR 

part 39 to include an AD that would 

apply to certain Cessna Airplane 

Company Model 525 airplanes equipped 

with certain P/N A/C compressor 

motors. That NPRM published in the 

Federal Register on August 22, 2012 (77 

FR 50644). That NPRM proposed to 

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 and also 

require reporting of aircraft information 

related to the replacement of the 

brushes. 

Actions Since Previous NPRM Was 

Issued 

Since we issued the previous NPRM 

(77 FR 50644, August 22, 2012), we 

identified revised steps for deactivation 

of the A/C compressor motor. 

Comments 

We gave the public the opportunity to 

comment on the previous NPRM (77 FR 

50644, August 22, 2012). The following 

presents the comments received on the 

NPRM and the FAA’s response to each 

comment. 

Request Task State Current 

Maintenance Manual Revision or 

Following Revision 23 or Greater 

Timothy Garroutte requested the FAA 

state current manual revision or 

following revision 23 or greater instead 

of using a specific revision of the 

maintenance manual. Garroutte 

reasoned that using an exact manual 

revision number and date in the AD will 

cause issues in the future because the 

manual will be revised again with a new 

date. If a specific revision is identified 

in the AD, the airplane mechanic will 

need to call Cessna Aircraft Company or 

the FAA to figure out what to do once 

the manual gets a revision higher than 

23. 

We disagree with the request to state 

current manual revision or following 

revision 23 or greater. The 

Airworthiness Directives Manual, FAA– 


tkelley on DSK3SPTVN1PROD with 
Federal Register / Vol. 77, No. 235 / Thursday, December 6, 2012 / Proposed Rules 72779 

IR–M–8040.1 C, dated May 17, 2010, 

(http://rgl.faa.gov/Regulatory_and_

Guidance_Library/rgOrders.nsf/0/ 

66DDD8E1D2E95DB3862577270062

AABD?OpenDocument&Highlight=

order8040.1c) states in Chapter 7, 

paragraph 9 (specifically subparagraph 

(3)) that the phrase ‘‘or later FAAapproved revision’’ when referring to 

the service information is not allowed. 

This phrase violates Office of the 

Federal Register policies for approving 

materials that are incorporated by 

reference. Service information that we 

incorporate by reference in an AD is 

often revised after we issue the AD. We 

can approve later revisions of service 

information as an alternative method of 

compliance. 

We did not change the proposed AD 

action based on these comments. 

Request Correct Deactivation 

Instructions for the A/C 

Cessna requested we include revised 

procedures for deactivating the A/C in 

the AD. 

Cessna stated that pulling the A/C 

circuit breaker does not disable the 

A/C compressor motor. The A/C can be 

deactivated by removal of a fuse limiter. 

Cessna provided specific deactivation 

instructions to include in the AD and 

requested we incorporate these 

instructions in the proposed AD. 

We agree with Cessna’s request 

because the instructions for deactivating 

the system were not correct in the 

NPRM (77 FR 50644, August 22, 2012). 

We changed the proposed AD action 

based on these comments. 

FAA’s Determination 

We are proposing this supplemental 

NPRM 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. Certain changes described above 

expand the scope of the original NPRM. 

As a result, we have determined that it 

is necessary to reopen the comment 

period to provide additional 

opportunity for the public to comment 

on this supplemental NPRM. 

Proposed Requirements of the 

Supplemental NPRM 

This supplemental NPRM would 

require inspection of the number of 

hours on the A/C compressor hour 

meter, inspection of the logbook, 

replacement of the brushes on certain P/ 

N A/C compressor motors or 

deactivation of the A/C system until 

replacement of the brushes, and 

reporting of aircraft information related 

to the replacement of the brushes. 

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: 

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 January 22, 

2013. 

(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 


tkelley on DSK3SPTVN1PROD with 
72780 Federal Register / Vol. 77, No. 235 / Thursday, December 6, 2012 / Proposed Rules 

(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 and use this number 

in paragraph (h) of this AD or presume the 

brushes have over 500 hours TIS. 

(h) Replacement 

At whichever of the below compliance 

times occurs later, 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)(2)(ii) of this AD if 

the A/C compressor motor brush hours 

cannot be positively determined. 

(i) Deactivation 

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. 

Remove the fuse limiter that supplies power 

to the A/C compressor motor, fabricate and 

install a placard that states: ‘‘A/C 

DISABLED.’’ Install the 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. 

(1) Do the following steps to remove the 

compressor fuse limiter. 

(i) Open aft baggage compartment. 

(ii) Remove aft baggage compartment 

dividers. 

(iii) Disconnect the main battery connector 

from the battery. 

(iv) Tag the battery and external power 

receptacle with a warning tag that reads: 

WARNING: Do not connect the battery 

connector or external power cart during the 

maintenance in progress. 

(v) Remove wing nuts that attach the cover 

to the aft power J-Box. 

(vi) Remove the aft power J-Box cover. 

(vii) Remove nuts securing compressor fuse 

limiter (Reference Designator HZ028, P/N 

ANL100) to bus bar. Retain nuts. 

(viii) Remove the compressor motor fuse 

limiter from the terminals and retain for 

future reinstallation once compressor motor 

brushes have been replaced. 

(2) A properly certified mechanic must 

fabricate and install the placard as specified 

below: 

(i) Use 1⁄8-inch black lettering on a white 

background; and 

(ii) Install the placard on the instrument 

panel in close proximity to the A/C selection 

switch. 

(3) Do the following steps to return the 

aircraft to service with the compressor motor 

fuse limiter removed. 

(i) Install fuse limiter nuts on the terminals 

and torque to 100 inch-pounds +5 or ¥5 

inch-pounds. 

(ii) Install the aft power J-Box cover with 

the wing nuts. 

(iii) Remove the warning tag on the battery 

and external power receptacle. 

(iv) Connect battery connector to battery. 

(v) Install aft baggage compartment 

dividers. 

(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 (ACO), 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 

November 29, 2012. 

Earl Lawrence, 

Manager, Small Airplane Directorate, Aircraft 

Certification Service. 

[FR Doc. 2012–29398 Filed 12–5–12; 8:45 am] 

BILLING CODE 4910–13–P 


tkelley on DSK3SPTVN1PROD with