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

49359 

Vol. 73, No. 163 

Thursday, August 21, 2008 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2008–0903; Directorate 

Identifier 2008–NM–123–AD] 

RIN 2120–AA64 

Airworthiness Directives; Cessna 

Model 560 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to 

supersede an existing airworthiness 

directive (AD) that applies to certain 

Cessna Model 560 airplanes. The 

existing AD currently requires installing 

new minimum airspeed placards to 

notify the flightcrew of the proper 

airspeeds for operating in both normal 

and icing conditions. The existing AD 

also requires revising the airplane flight 

manual to provide limitations and 

procedures for operating in icing 

conditions, for operating with anti-ice 

systems selected ‘‘on’’ independent of 

icing conditions, and for recognizing 

and recovering from inadvertent stall. 

The existing AD also provides an 

optional terminating action for the 

placard installation. This proposed AD 

would require the previously optional 

terminating action. This proposed AD 

results from an evaluation of in-service 

airplanes following an accident. The 

evaluation indicated that some airplanes 

might have an improperly adjusted stall 

warning system. We are proposing this 

AD to prevent an inadvertent stall due 

to the inadequate stall warning margin 

provided by an improperly adjusted 

stall warning system, which could result 

in loss of controllability of the airplane. 

DATES: We must receive comments on 

this proposed AD by October 6, 2008. 

ADDRESSES: You may send comments 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. 

For service information identified in 

this AD, contact Cessna Aircraft Co., 

P.O. Box 7706, Wichita, Kansas 67277. 

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 

(telephone 800–647–5527) is in the 

ADDRESSES section. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: Bob 

Busto, Aerospace Engineer, Systems and 

Propulsion Branch, ACE–116W, FAA, 

Wichita Aircraft Certification Office, 

1801 Airport Road, Room 100, MidContinent Airport, Wichita, Kansas 

67209; telephone (316) 946–4157; fax 

(316) 946–4107. 

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–2008–0903; Directorate Identifier 

2008–NM–123–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 

On November 5, 2007, we issued AD 

2007–23–13, amendment 39–15259 (72 

FR 64135, November 15, 2007), for 

certain Cessna Model 560 airplanes. 

That AD requires installing new 

minimum airspeed placards to notify 

the flightcrew of the proper airspeeds 

for operating in both normal and icing 

conditions. That AD also requires 

revising the airplane flight manual to 

provide limitations and procedures for 

operating in icing conditions, for 

operating with anti-ice systems selected 

‘‘on’’ independent of icing conditions, 

and for recognizing and recovering from 

inadvertent stall. That AD also provides 

an optional terminating action for the 

placard installation. That AD resulted 

from an evaluation of in-service 

airplanes following an accident. The 

evaluation indicated that some airplanes 

may have an improperly adjusted stall 

warning system. We issued that AD to 

prevent an inadvertent stall due to the 

inadequate stall warning margin 

provided by an improperly adjusted 

stall warning system, which could result 

in loss of controllability of the airplane. 

Actions Since Existing AD Was Issued 

The preamble to AD 2007–23–13 

explains that we consider the 

requirements ‘‘interim action’’ and were 

considering further rulemaking to 

require a functional test of the angle-ofattack (AOA) system to adjust the 

calibration settings of the AOA system, 

which, in addition to the AFM 

revisions, would constitute terminating 

action for the placard installation 

required by this AD. The interim action 

was intended to heighten flight crew 

awareness as to the proper operational 

airspeeds, aircraft characteristics, and 

stall recovery techniques. We now have 

determined that further rulemaking is 

indeed necessary, and this proposed AD 

follows from that determination. 

Relevant Service Information 

We have reviewed Cessna Alert 

Service Letters ASL560–34–34 (for 

airplanes equipped with a single AOA 

system) and ASL560–34–35 (for 

airplanes equipped with a dual AOA 

system), both Revision 3, both dated 


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49360 Federal Register / Vol. 73, No. 163 / Thursday, August 21, 2008 / Proposed Rules 

March 6, 2008, both including 

Attachments. We referred to Revision 1 

of the alert service letters as the 

appropriate source of service 

information for doing the optional 

terminating action (i.e., doing a 

functional test of the AOA system) 

specified in AD 2007–23–13. Revision 3 

contains essentially the same 

procedures as Revision 1. Revision 3 

includes changes to the cruise 

configuration tolerance and to the 

approach configuration, and 

standardizes certain nomenclature. 

We have also reviewed Cessna Service 

Bulletin SB560–34–143, Revision 1, 

dated November 21, 2007. We referred 

to the original issue, dated September 7, 

2007, as the appropriate source of 

service information for doing the 

placard installation specified in AD 

2007–23–13. Revision 1 contains 

essentially the same procedures as the 

original issue and adds references to 

certain temporary changes (which are 

already specified in AD 2007–23–13). 

Accomplishing the actions specified 

in the service information is intended to 

adequately address the unsafe 

condition. 

FAA’s Determination and Requirements 

of the Proposed AD 

We have evaluated all pertinent 

information and identified an unsafe 

condition that is likely to develop on 

other airplanes of the same type design. 

For this reason, we are proposing this 

AD, which would supersede AD 2007–

23–13 and would retain the 

requirements of the existing AD. This 

proposed AD would also require 

accomplishing the terminating action 

specified in the alert service letters 

described previously. This proposed AD 

would also require sending the 

functional test results to the 

manufacturer. 

Costs of Compliance 

There are about 538 airplanes of the 

affected design in the worldwide fleet. 

The following table provides the 

estimated costs for U.S. operators to 

comply with this proposed AD. There 

are about 400 U.S. registered airplanes. 

ESTIMATED COSTS

Action Work hours 

Average 

labor rate 

per hour 

Cost per 

airplane Fleet cost 

AFM Revision (required by AD 2007–23–13) ................................................................. 1 $80 $80 $32,000 

Placard Installation (required by AD 2007–23–13) ......................................................... 1 80 80 32,000 

Functional Test (new proposed action) ........................................................................... 8 80 640 256,000 

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 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. 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 

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 Federal Aviation 

Administration (FAA) amends § 39.13 

by removing amendment 39–15259 (72 

FR 64135, November 15, 2007) and 

adding the following new airworthiness 

directive (AD): 

Cessna Aircraft Company: Docket No. FAA–

2008–0903; Directorate Identifier 2008–

NM–123–AD. 

Comments Due Date 

(a) The FAA must receive comments on 

this AD action by October 6, 2008. 

Affected ADs 

(b) This AD supersedes AD 2007–23–13. 

Applicability 

(c) This AD applies to Cessna Model 560 

airplanes, certificated in any category, serial 

numbers (S/Ns) 560–0001 through 0538 

inclusive. 

Unsafe Condition 

(d) This AD results from an evaluation of 

in-service airplanes following an accident. 

The evaluation indicated that some airplanes 

may have an improperly adjusted stall 

warning system. We are issuing this AD to 

prevent an inadvertent stall due to the 

inadequate stall warning margin provided by 

an improperly adjusted stall warning system, 

which could result in loss of controllability 

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. 

Restatement of Requirements of AD 2007– 

23–13 

Airplane Flight Manual (AFM) Revision 

(f) Within 14 days after November 30, 2007 

(the effective date of AD 2007–23–13), revise 


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the Operating Limitations, Normal 

Procedures, Emergency Procedures, and the 

Approach and Landing sections of the AFM 

to include the information in the temporary 

changes (TCs) identified in Table 1 of this 

AD, as applicable, except as required by 

paragraph (k) of this AD. These TCs provide 

limitations and procedures for operating in 

icing conditions, for operating with anti-ice 

systems selected ‘‘on’’ independent of icing 

conditions, and for recognizing and 

recovering from inadvertent stall. Operate the 

airplane according to the limitations and 

procedures in the applicable TCs. 

Note 1: This may be done by inserting a 

copy of the applicable TCs into the 

applicable AFM. When these TCs have been 

included in the general revisions of the AFM, 

the general revisions may be inserted into the 

AFM (in lieu of the applicable TCs), provided 

the relevant information in the general 

revision is identical to that in the applicable 

TCs. 

TABLE 1—CESSNA MODEL 560 TCS

Airplanes Applicable TC 

Model 560 airplanes, S/Ns 560–0001 through 

–0259 inclusive.

560FM TC–R13–08, dated August 31, 2007, to the Cessna Model 560 Citation V AFM. 

560FM TC–R13–09, dated August 31, 2007, to the Cessna Model 560 Citation V AFM. 

560FM TC–R13–10, dated August 31, 2007, to the Cessna Model 560 Citation V AFM. 

560FM TC–R13–12, dated August 31, 2007, to the Cessna Model 560 Citation V AFM. 

560FM TC–R13–13, dated August 31, 2007, to the Cessna Model 560 Citation V AFM. 

560FM TC–R13–14, dated October 2, 2007, to the Cessna Model 560 Citation V AFM. 

560FM TC–R13–15, dated October 2, 2007, to the Cessna Model 560 Citation V AFM. 

560FM TC–R13–16, dated October 2, 2007, to the Cessna Model 560 Citation V AFM. 

560FM TC–R13–17, dated October 2, 2007, to the Cessna Model 560 Citation V AFM. 

560FM TC–R13–18, dated October 2, 2007, to the Cessna Model 560 Citation V AFM. 

560FM TC–R13–19, dated October 2, 2007, to the Cessna Model 560 Citation V AFM. 

560FM TC–R13–20, dated October 2, 2007, to the Cessna Model 560 Citation V AFM. 

Model 560 airplanes, S/Ns 560–0260 through 

–0538 inclusive.

56FMA TC–R11–16, dated August 31, 2007, to the Cessna Model 560 Citation Ultra AFM. 

56FMA TC–R11–17, dated August 31, 2007, to the Cessna Model 560 Citation Ultra AFM. 

56FMA TC–R11–19, dated August 31, 2007, to the Cessna Model 560 Citation Ultra AFM. 

56FMA TC–R11–20, dated August 31, 2007, to the Cessna Model 560 Citation Ultra AFM. 

56FMA TC–R11–21, dated August 31, 2007, to the Cessna Model 560 Citation Ultra AFM. 

56FMA TC–R11–23, dated October 2, 2007, to the Cessna Model 560 Citation Ultra AFM. 

56FMA TC–R11–24, dated October 2, 2007, to the Cessna Model 560 Citation Ultra AFM. 

56FMA TC–R11–25, dated October 2, 2007, to the Cessna Model 560 Citation Ultra AFM. 

56FMA TC–R11–26, dated October 2, 2007, to the Cessna Model 560 Citation Ultra AFM. 

56FMA TC–R11–27, dated October 2, 2007, to the Cessna Model 560 Citation Ultra AFM. 

56FMA TC–R11–28, dated October 2, 2007, to the Cessna Model 560 Citation Ultra AFM. 

56FMA TC–R11–29, dated October 2, 2007, to the Cessna Model 560 Citation Ultra AFM. 

56FMA TC–R11–30, dated October 2, 2007, to the Cessna Model 560 Citation Ultra AFM. 

Placard Installation 

(g) Within 30 days after November 30, 

2007, install new minimum airspeed 

placards to notify the flightcrew of the proper 

airspeeds for operating in normal and icing 

conditions, in accordance with the 

Accomplishment Instructions of Cessna 

Service Bulletin SB560–34–143, dated 

September 7, 2007, including Attachment 

and Service Bulletin Supplemental Data; or 

Cessna Service Bulletin SB560–34–143, 

Revision 1, dated November 21, 2007. As of 

the effective date of this AD, only Revision 

1 may be used. The placards must be 

installed above or near the pilot and copilot 

attitude indicators or primary flight displays 

and must be in clear view of the pilot and 

copilot. The placards may be removed when 

the actions specified in paragraphs (i) and (j) 

of this AD have been accomplished. 

No Maintenance Transaction Report 

Required for Cessna Service Bulletin 

(h) Although Cessna Service Bulletin 

SB560–34–143, dated September 7, 2007, 

including Attachment and Service Bulletin 

Supplemental Data; and Cessna Service 

Bulletin SB560–34–143, Revision 1, dated 

November 21, 2007; referred to in paragraph 

(g) of this AD, specify to submit a 

maintenance transaction report to the 

manufacturer, this AD does not include that 

requirement. 

New Requirements of This AD 

Terminating Action 

(i) Within 6 months after the effective date 

of this AD, do a functional test of the angleof-attack (AOA) system, and adjust the 

calibration settings of the AOA system as 

applicable, in accordance with Cessna Alert 

Service Letter ASL560–34–34 (for airplanes 

equipped with a single AOA system) or 

ASL560–34–35 (for airplanes equipped with 

a dual AOA system), both Revision 1, both 

dated October 2, 2007, both including 

Attachments, as applicable; or Cessna Alert 

Service Letter ASL560–34–34 or ASL560–34–

35, both Revision 3, both dated March 6, 

2008, both including Attachments, as 

applicable. As of the effective date of this 

AD, only Revision 3 may be used. Doing the 

functional test of the AOA system, adjusting 

the calibration settings of the AOA system as 

applicable, and submitting the AOA system 

test data as specified in paragraph (j) of this 

AD, terminates the placard installation 

required by paragraph (g) of this AD. 

Note 2: Maintenance Manual Revision 24 

of Cessna 560 Maintenance Manual 56MM 

has been changed to reflect the intent of the 

ASLs for the maintenance actions and 

periodic inspections of the AOA/Stall 

Warning System. 

Reporting AOA System Test Data 

(j) Submit the AOA system test data report 

for the functional test specified in paragraph 

(i) of this AD to Glenn Todd, Citation 

Customer Support Engineer, Department 572, 

P.O. Box 7706, Wichita, KS 67277–7706, 

e-mail: gatodd@cessna.textron.com, fax: 1–

316–517–8500 or 1–316–206–2337. Submit 

the report at the applicable time specified in 

paragraph (j)(1) or (j)(2) of this AD. The 

report must include the AOA test data, the 

airplane serial number and registration 

number, and the number of landings and 

flight hours on the airplane. Under the 

provisions of the Paperwork Reduction Act 

(44 U.S.C. 3501 et seq.), the Office of 

Management and Budget (OMB) has 

approved the information collection 

requirements contained in this AD and has 

assigned OMB Control Number 2120–0056. 

(1) If the functional test was done after 

November 30, 2007: Submit the report within 

30 days after doing the functional test. 

(2) If the inspection was accomplished 

prior to November 30, 2007: Submit the 

report within 30 days after November 30, 

2007. 

Removal of Warning From the Limitations 

Section of the AFM 

(k) For airplanes on which the actions 

required by paragraph (i) of this AD have 

been done: Within 30 days after doing the 

actions required by paragraph (i) of this AD 

or within 30 days after the effective date of 

this AD, whichever occurs later, revise the 

Limitations Section of the AFM by removing 

the following Warning statement: 


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‘‘Warning: Stick Shaker May Not Activate 

Prior to Buffet/Roll-Off If Airspeed Is 

Reduced Below the Appropriate Minimum 

Speed.’’

No Maintenance Transaction Report 

Required for Cessna Service Letters 

(l) Cessna Alert Service Letters ASL560–

34–34 and ASL560–34–35, both Revision 1, 

both dated October 2, 2007, both including 

Attachments; and Cessna Alert Service 

Letters ASL560–34–34 and ASL560–34–35, 

both Revision 3, both dated March 6, 2008, 

both including Attachments; specify to 

submit a maintenance transaction report to 

the manufacturer. This AD does not include 

that requirement. 

Actions Accomplished According to 

Previous Issue of Service Bulletin 

(m) Actions accomplished before the 

effective date of this AD in accordance with 

Cessna Alert Service Letter ASL560–34–34 or 

ASL560–34–35, both Revision 2, both dated 

January 11, 2008, both including 

Attachments, are considered acceptable for 

compliance with the corresponding action 

specified in paragraph (i) of this AD. 

Alternative Methods of Compliance 

(AMOCs) 

(n)(1) The Manager, Wichita Aircraft 

Certification Office (ACO), FAA, ATTN: Bob 

Busto, Aerospace Engineer, Systems and 

Propulsion Branch, ACE–116W, FAA, 

Wichita ACO, 1801 Airport Road, Room 100, 

Mid-Continent Airport, Wichita, Kansas 

67209; telephone (316) 946–4157; fax (316) 

946–4107; has the authority to approve 

AMOCs for this AD, if requested using the 

procedures found in 14 CFR 39.19. 

(2) To request a different method of 

compliance or a different compliance time 

for this AD, follow the procedures in 14 CFR 

39.19. Before using any approved AMOC on 

any airplane to which the AMOC applies, 

notify your appropriate principal inspector 

(PI) in the FAA Flight Standards District 

Office (FSDO), or lacking a PI, your local 

FSDO. 

Issued in Renton, Washington, on August 

12, 2008. 

Michael J. Kaszycki, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. E8–19386 Filed 8–20–08; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2008–0889; Directorate 

Identifier 2008–NM–092–AD] 

RIN 2120–AA64 

Airworthiness Directives; Empresa 

Brasileira de Aeronautica S.A. 

(EMBRAER) Model ERJ 170 and ERJ 

190 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for the 

products listed above. This proposed 

AD results from mandatory continuing 

airworthiness information (MCAI) 

originated by an aviation authority of 

another country to identify and correct 

an unsafe condition on an aviation 

product. The MCAI describes the unsafe 

condition as: 

[E]scape slide system installation [was found 

with] * * * tie-down straps which are used 

for escape slide packing [having not been 

removed]. The non-removal of the tie-down 

straps does not allow the aircraft door to 

reach the fully open position and the 

consequent deployment of the escape slide 

system in a * * * emergency evacuation, 

affecting the occupying safety. 

The unsafe condition is failure of an 

evacuation system, which could impede 

an emergency evacuation and increase 

the chance of injury to passengers and 

flightcrew during the evacuation. The 

proposed AD would require actions that 

are intended to address the unsafe 

condition described in the MCAI. 

DATES: We must receive comments on 

this proposed AD by September 22, 

2008. 

ADDRESSES: You may send comments 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 

W12–40, 1200 New Jersey Avenue, SE., 

Washington, DC, 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 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 in 

the ADDRESSES section. Comments will 

be available in the AD docket shortly 

after receipt. 

FOR FURTHER INFORMATION CONTACT: 

Kenny Kaulia, Aerospace Engineer, 

International Branch, ANM–116, 

Transport Airplane Directorate, FAA, 

1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone 

(425) 227–2848; fax (425) 227–1149. 

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–2008–0889; Directorate Identifier 

2008–NM–092–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 we receive 

about this proposed AD. 

Discussion 

The Ageˆncia Nacional de Aviac ̧a ̃o 

Civil (ANAC), which is the aviation 

authority for Brazil, has issued Brazilian 

Airworthiness Directives 2008–01–03 

and 2008–01–04, both effective March 3, 

2008 (referred to after this as ‘‘the 

MCAI’’), to correct an unsafe condition 

for the specified products. The MCAI 

states: 

[E]scape slide system installation [was found 

with] * * * tie-down straps which are used 

for escape slide packing [having not been 

removed]. The non-removal of the tie-down 

straps does not allow the aircraft door to 

reach the fully open position and the 

consequent deployment of the escape slide 

system in a * * * emergency evacuation, 

affecting the occupying safety. 

The unsafe condition is failure of an 

evacuation system, which could impede 


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