Federal Register / Vol. 77, No. 137 / Tuesday, July 17, 2012 / Proposed Rules 41937 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–0720; Directorate 

Identifier 2012–NM–059–AD] 

RIN 2120–AA64 

Airworthiness Directives; Cessna 

Aircraft 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 Aircraft Company Model 750 

airplanes. This proposed AD was 

prompted by reports of loss of displayed 

airspeed. This proposed AD would 

require inspecting certain logic modules 

to determine if certain cabin altitude/ 

pitot static heater module assemblies are 

installed and replacing those assemblies 

with a new assembly; and revising the 

Non-Normal Procedures Section of the 

airplane flight manual (AFM) to include 

procedures for resetting the pitot switch 

in the event of pitot heater failure and 

for total loss of airspeed indication. We 

are proposing this AD to prevent the 

loss of all displayed airspeed, which 

could result in reduced ability to control 

the airplane. 

DATES: We must receive comments on 

this proposed AD by August 31, 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. 

For service information identified in 

this proposed AD, contact Cessna 

Aircraft Co., P.O. Box 7706, Wichita, 

Kansas 67277; telephone 316–517–6215; 

fax 316–517–5802; email 

citationpubs@cessna.textron.com; 

Internet https:// 

www.cessnasupport.com/newlogin.html. 

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. 

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, 

Electrical Systems and Avionics, ACE– 

119W, FAA, Wichita Aircraft 

Certification Office (ACO), 1801 Airport 

Road, Room 100, Mid-Continent 

Airport, Wichita, Kansas 67209; phone: 

316–946–4165; fax: 316–946–4107; 

email: Christine.Abraham@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– 

2012–0720; Directorate Identifier 2012– 

NM–059–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 have received multiple reports of 

loss of displayed airspeed. An 

investigation has revealed that a sudden 

temperature change to the pitot probe 

can cause a spike in the current 

supplied by the cabin altitude logic 

module. The over-current module 

senses the spike and shuts the current 

off resulting in loss of heat to the pitot 

probe(s). In the absence of pitot heat, ice 

can build up on the pitot probes 

resulting in no airspeed information 

being sent to the air data system and 

consequent loss of displayed airspeed. 

The loss of all displayed airspeed could 

result in reduced ability to control the 

airplane. 

Relevant Service Information 

We reviewed Cessna Service Letter 

SL750–30–08, Revision 1, dated July 11, 

2011. This service information describes 

procedures for inspecting certain logic 

modules to determine if certain cabin 

altitude/pitot static heater module 

assemblies are installed and replacing 

those assemblies with a new assembly. 

We have also reviewed the following 

temporary changes to the Cessna 750 

AFM for resetting the pitot switch in the 

event of pitot heat failure and for total 

loss of airspeed indication. 

• Cessna Temporary FAA Approved 

Airplane Flight Manual Change 75FM 

TC–R11–25, approved June 26, 2012. 

• Cessna Temporary FAA Approved 

Airplane Flight Manual Change 75FM 

TC–R11–26, approved June 26, 2012. 

• Cessna Temporary FAA Approved 

Airplane Flight Manual Change 75FM 

TC–R11–23, approved June 26, 2012. 

• Cessna Temporary FAA Approved 

Airplane Flight Manual Change 75FM 

TC–R11–24, approved June 26, 2012. 

• Cessna Temporary FAA Approved 

Airplane Flight Manual Change 75FMA 

TC–R02–03, approved April 10, 2012. 

• Cessna Temporary FAA Approved 

Airplane Flight Manual Change 75FMA 

TC–R02–07, approved June 26, 2012. 

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 

accomplishing the actions specified in 

the service information described 

previously, except as discussed under 

‘‘Differences Between the Proposed AD 

and the Service Information.’’ 

Additionally, this proposed AD would 

require revising the Non-Normal 

Procedures Section of the Cessna 750 

AFM to include procedures for resetting 

the pitot switch in the event of pitot 

heater failure and for total loss of 

airspeed indication. 

Differences Between the Proposed AD 

and the Service Information 

Although Cessna Service Letter 

SL750–30–08, Revision 1, dated July 11, 

2011, recommends accomplishing the 

inspection within 1,200 flight hours or 

two years after the date of receipt of that 

service letter, we have determined that 

interval would not address the 

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41938 Federal Register / Vol. 77, No. 137 / Tuesday, July 17, 2012 / Proposed Rules 

identified unsafe condition soon enough 

to ensure an adequate level of safety for 

the affected fleet. In developing an 

appropriate compliance time for this 

proposed AD, we considered the degree 

of urgency associated with the subject 

unsafe condition and we find that a 

compliance time of within 600 flight 

hours or within one year after the 

effective date of this proposed AD, 

whichever occurs first, represents an 

appropriate interval of time for affected 

airplanes to continue to operate without 

compromising safety. This difference 

has been coordinated with Cessna. 

Costs of Compliance 

We estimate that this proposed AD 

affects 210 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 

Inspection ................................ 2 work-hours × $85 per hour = $170 ..................................... $0 $170 $35,700 

Revision .................................. 1 work-hour × $85 per hour = $85 ......................................... 0 85 17,850 

We estimate the following costs to do 

any necessary replacements that would 

be required based on the results of the 

proposed inspection. We have no way of 

determining the number of aircraft that 

might need these replacements: 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Replacement .................................... 1 work-hour × $85 per hour = $85 ............................................................ $4,058 $4,143 

According to the manufacturer, some 

of the costs of this proposed AD may be 

covered under warranty, thereby 

reducing the cost impact on affected 

individuals. We do not control warranty 

coverage for affected individuals. As a 

result, we have included all costs in our 

cost estimate. 

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– 

2012–0720; Directorate Identifier 2012– 

NM–059–AD. 

(a) Comments Due Date 

We must receive comments by August 31, 

2012. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to The Cessna Aircraft 

Company Model 750 airplanes, certificated in 

any category, serial numbers 0001 through 

0245 inclusive. 

(d) Subject 

Joint Aircraft System Component (JASC)/ 

Air Transport Association (ATA) of America 

Code 3030, Pitot/Static Anti-Ice System. 

(e) Unsafe Condition 

This AD was prompted by reports of loss 

of displayed airspeed. We are issuing this AD 

to prevent the loss of all displayed airspeed, 

which could result in reduced ability to 

control the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Inspection and Replacement 

Within 600 flight hours or one year after 

the effective date of this AD, whichever 

occurs first: Do an inspection of logic 

modules having part number 

(P/N) NC006 and P/N NC007 to determine if 

any cabin altitude/pitot static heater module 

assemblies having P/N 6718477–9, or P/N 

6718477–10, or 9914731–1 are installed, in 

accordance with the Accomplishment 

Instructions of Cessna Service Letter SL750– 

30–08, Revision 1, dated July 11, 2011. If any 

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Federal Register / Vol. 77, No. 137 / Tuesday, July 17, 2012 / Proposed Rules 41939 

altitude/pitot static heater module assembly 

having P/N 6718477–9, P/N 6718477–10, or 

9914731–1 is installed: Before further flight, 

replace that assembly with a new assembly 

having P/N 6718477–11, in accordance with 

the Accomplishment Instructions of Cessna 

Service Letter SL750–30–08, Revision 1, 

dated July 11, 2011. 

(h) Airplane Flight Manual (AFM) Revision 

Concurrently with the actions required by 

paragraph (g) of this AD: Revise the NonNormal Procedures Section of the Cessna 750 

AFM to include the information the flight 

manual changes identified in paragraphs 

(h)(1), (h)(2), (h)(3), (h)(4), (h)(5), and (h)(6) 

of this AD. This may be done by inserting 

copies of these flight manual changes into the 

Cessna 750 AFM. When these flight manual 

changes have been included in general 

revisions of the AFM, the general revisions 

may be inserted in the AFM, provided the 

relevant information in the general revision 

is identical to that in these flight manual 

changes, and then these temporary flight 

manual changes may be removed. 

(1) Cessna Temporary FAA Approved 

Airplane Flight Manual Change 75FM TC– 

R11–25, approved June 26, 2012. 

(2) Cessna Temporary FAA Approved 

Airplane Flight Manual Change 75FM TC– 

R11–26, approved June 26, 2012. 

(3) Cessna Temporary FAA Approved 

Airplane Flight Manual Change 75FM TC– 

R11–23, approved June 26, 2012. 

(4) Cessna Temporary FAA Approved 

Airplane Flight Manual Change 75FM TC– 

R11–24, approved June 26, 2012. 

(5) Cessna Temporary FAA Approved 

Airplane Flight Manual Change 75FMA TC– 

R02–03, approved April 10, 2012. 

(6) Cessna Temporary FAA Approved 

Airplane Flight Manual Change 75FMA TC– 

R02–07, approved June 26, 2012. 

(i) Parts Installation Prohibition 

As of the effective date of this AD, no 

person may install an altitude/pitot static 

heater module assembly having 

P/N 6718477–9, 6718477–10, or 9914731–1, 

on any airplane. 

(j) Special Flight Permit 

Special flight permits may be issued in 

accordance with sections 21.197 and 21.199 

of the Federal Aviation Regulations (14 CFR 

21.197 and 21.199) to operate the airplane to 

a location where the airplane can be 

modified (if the operator elects to do so), 

provided the actions required by paragraph 

(h) of this AD have been accomplished. 

(k) 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. 

(l) Related Information 

(1) For more information about this AD, 

contact Christine Abraham, Aerospace 

Engineer, Electrical Systems and Avionics, 

ACE–119W, FAA, Wichita Aircraft 

Certification Office, 1801 Airport Road, 

Room 100, Mid-Continent Airport, Wichita, 

Kansas 67209; phone: 316–946–4165; fax: 

316–946–4107; email: 

Christine.Abraham@faa.gov. 

(2) For service information identified in 

this AD, contact Cessna Aircraft Co., P.O. Box 

7706, Wichita, Kansas 67277; telephone 316– 

517–6215; fax 316–517–5802; email 

citationpubs@cessna.textron.com; Internet 

https://www.cessnasupport.com/ 

newlogin.html. You may review copies of the 

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 July 6, 

2012. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2012–17395 Filed 7–16–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

Docket No. FAA–2012–0379; Airspace 

Docket No. 12–ANM–7 

Proposed Establishment of Class E 

Airspace; Deer Lodge, MT 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: This action proposes to 

establish Class E airspace at Deer LodgeCity-County Airport, Deer Lodge, MT. 

Controlled airspace is necessary to 

accommodate aircraft using new Area 

Navigation (RNAV) Global Positioning 

System (GPS) standard instrument 

approach procedures at Deer LodgeCity-County Airport, Deer Lodge, MT. 

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 August 31, 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–2012–0379; Airspace 

Docket No. 12–ANM–7, at the beginning 

of your comments. You may also submit 

comments through the Internet at 

http://www.regulations.gov. 

FOR FURTHER INFORMATION CONTACT: 

Eldon Taylor, Federal Aviation 

Administration, Operations Support 

Group, Western Service Center, 1601 

Lind Avenue SW., Renton, WA 98057; 

telephone (425) 203–4537. 

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 

2012–0379 and Airspace Docket No. 12– 

ANM–7) 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–2012–0379 and 

Airspace Docket No. 12–ANM–7’’. 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 

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