44734 Federal Register / Vol. 72, No. 153 / Thursday, August 9, 2007 / Rules and Regulations 

Material Incorporated by Reference 

(h) You must use the applicable service 

information specified in Table 2 of this AD 

to do the actions required by this AD, unless 

the AD specifies otherwise. If you 

accomplish the optional terminating 

modification specified in this AD, you must 

use the applicable service information 

specified in Table 3 of this AD. 

TABLE 2.—REQUIRED MATERIAL INCORPORATED BY REFERENCE

Airbus Service Bulletin Revision Date 

A330–57–3081, including Appendix 01 ...................................................................................................... 02 January 24, 2006. 

A340–57–4089, including Appendix 01 ...................................................................................................... 02 January 24, 2006. 

TABLE 3.—OPTIONAL MATERIAL

INCORPORATED BY REFERENCE

Airbus Service Bulletin Date 

A330–57–3090 ................. March 27, 2006. 

A340–57–4098 ................. March 27, 2006. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

this service information under 5 U.S.C. 

552(a) and 1 CFR part 51. 

(2) For service information identified in 

this AD, contact Airbus, 1 Rond Point 

Maurice Bellonte, 31707 Blagnac Cedex, 

France. 

(3) You may review copies at the FAA, 

Transport Airplane Directorate, 1601 Lind 

Avenue SW., Renton, Washington; or at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, call 

202–741–6030, or go to: http:// 

www.archives.gov/federal-register/cfr/ibrlocations.html. 

Issued in Renton, Washington, on July 24, 

2007. 

Stephen P. Boyd, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. E7–14866 Filed 8–8–07; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2007–28094; Directorate 

Identifier 2006–NM–258–AD; Amendment 

39–15148; AD 2007–16–09] 

RIN 2120–AA64 

Airworthiness Directives; Empresa 

Brasileira de Aeronautica S.A. 

(EMBRAER) Model ERJ 170 Airplanes 

and Model ERJ 190 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: The FAA is superseding an 

existing airworthiness directive (AD), 

which applies to all EMBRAER Model 

ERJ 170–100 LR, –100 STD, –100 SE, 

and –100 SU airplanes. That AD 

currently requires repetitively replacing 

the low-stage check valve and 

associated seals of the right-hand engine 

bleed system. This new AD adds new 

airplanes to that existing requirement. 

For all airplanes, this AD also requires 

repetitively replacing the low-stage 

check valve and associated seals of the 

left-hand engine bleed system with a 

new check valve and new seals. This 

AD results from a report that an engine 

shut down during flight due to the 

failure of the low-stage check valve to 

close. We are issuing this AD to prevent 

failure of the low-stage check valve, 

which could result in an engine shutting 

down during flight. 

DATES: This AD becomes effective 

September 13, 2007. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in the AD 

as of September 13, 2007. 

On November 29, 2005 (70 FR 69075, 

November 14, 2005), the Director of the 

Federal Register approved the 

incorporation by reference of a certain 

service bulletin. 

ADDRESSES: You may examine the AD 

docket on the Internet at http:// 

dms.dot.gov or in person at the U.S. 

Department of Transportation, Docket 

Operations, M–30, West Building 

Ground Floor, Room W12–140, 1200 

New Jersey Avenue, SE., Washington, 

DC. 

Contact Empresa Brasileira de 

Aeronautica S.A. (EMBRAER), P.O. Box 

343–CEP 12.225, Sao Jose dos Campos—

SP, Brazil, for service information 

identified in this AD. 

FOR FURTHER INFORMATION CONTACT: 

Todd Thompson, Aerospace Engineer, 

International Branch, ANM–116, FAA, 

Transport Airplane Directorate, 1601 

Lind Avenue, SW., Renton, Washington 

98057–3356; telephone (425) 227–1175; 

fax (425) 227–1149. 

SUPPLEMENTARY INFORMATION: 

Examining the Docket 

You may examine the AD docket on 

the Internet at http://dms.dot.gov or in 

person at the Docket Operations office 

between 9 a.m. and 5 p.m., Monday 

through Friday, except Federal holidays. 

The Docket Operations office (telephone 

(800) 647–5527) is located on the 

ground floor of the West Building at the 

DOT street address stated in the 

ADDRESSES section. 

Discussion 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an AD that 

supersedes AD 2005–23–14, amendment 

39–14372 (70 FR 69075, November 14, 

2005). The existing AD applies to all 

EMBRAER Model ERJ 170–100 LR, –100 

STD, –100 SE, and –100 SU airplanes. 

That NPRM was published in the 

Federal Register on May 8, 2007 (72 FR 

26008). That NPRM proposed to 

continue to require repetitively 

replacing the low-stage check valve and 

associated seals of the right-hand (RH) 

engine bleed system. That NPRM also 

proposed to add new airplanes to that 

existing requirement. For all airplanes, 

that NPRM also proposed to require 

repetitively replacing the low-stage 

check valve and associated seals of the 

left-hand (LH) engine bleed system with 

a new check valve and new seals. 

Comments 

We provided the public the 

opportunity to participate in the 

development of this AD. No comments 

have been received on the NPRM or on 

the determination of the cost to the 

public. 

Changes to This AD 

We have reviewed Revision 01 of 

EMBRAER Service Bulletin 190–36–

0004, dated November 14, 2006, and 

have determined that the 

accomplishment instructions of 

Revision 01 are the same as those in the 

original issue of the service bulletin. In 

the NPRM, we referred to the original 

issue of EMBRAER Service Bulletin 

190–36–0004, dated October 18, 2006, 

as the appropriate source of service 

information for replacing the low-stage 

check valves and associated seals of the 

RH and LH engine bleed system, on 

Model ERJ 190–100 STD, –100 LR, and 

–100 IGW airplanes. Therefore, we have 

revised paragraphs (j) and (k) of this AD 

to also refer to Revision 01 of EMBRAER 

Service Bulletin 190–36–0004, dated 

November 14, 2006, as an appropriate 

source of service information. We have 


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Federal Register / Vol. 72, No. 153 / Thursday, August 9, 2007 / Rules and Regulations 44735 

also revised paragraph (n) of this AD to 

specify that this AD does not require 

sending to the manufacturer any check 

valve removed in accordance with 

Revision 01 of EMBRAER Service 

Bulletin 190–36–0004. 

Conclusion 

We have carefully reviewed the 

available data and determined that air 

safety and the public interest require 

adopting the AD with the changes 

described previously. We have 

determined that these changes will 

neither increase the economic burden 

on any operator nor increase the scope 

of the AD. 

Interim Action 

This AD is considered to be interim 

action. The manufacturer has advised 

that it currently is developing a 

modification that will address the 

unsafe condition addressed by this AD. 

Once this modification is approved we 

might consider additional rulemaking. 

Costs of Compliance 

The following table provides the 

estimated costs, at an average labor rate 

of $80 per work hour, for U.S. operators 

to comply with this AD. The parts 

manufacturer states that it will supply 

required parts to operators at no cost. 

ESTIMATED COSTS

Action Work hours Cost per airplane 

Number of 

U.S.-registered 

airplanes 

Fleet cost 

Replacement of RH check valves on Model ERJ 

170–100 LR, –100 STD, –100 SE, and –100 SU 

airplanes (required by AD 2005–23–14).

3 $240, per replacement 

cycle.

55 $13,200, per replacement 

cycle. 

Replacement of LH check valves on Model ERJ 

170–100 LR, –100 STD, –100 SE, –100 SU, –200 

LR, –200 STD, and –200 SU airplanes (new action).

3 $240, per replacement 

cycle.

75 $18,000, per replacement 

cycle. 

Replacement of RH check valves on Model ERJ 190 

airplanes (new action).

3 $240, per replacement 

cycle.

23 $5,520, per replacement 

cycle. 

Replacement of LH check valves on Model ERJ 190 

airplanes (new action).

3 $240, per replacement 

cycle.

23 $5,520, per replacement 

cycle. 

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 AD will 

not have federalism implications under 

Executive Order 13132. This AD will 

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 this AD: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866; 

(2) Is not a ‘‘significant rule’’ under 

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 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, Incorporation by reference, 

Safety. 

Adoption of the Amendment 

■ Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA amends 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 39–14372 (70 

FR 69075, November 14, 2005) and by 

adding the following new airworthiness 

directive (AD): 

2007–16–09 Empresa Brasileira de 

Aeronautica S.A. (EMBRAER): 

Amendment 39–15148. Docket No. 

FAA–2007–28094; Directorate Identifier 

2006–NM–258–AD. 

Effective Date 

(a) This AD becomes effective September 

13, 2007. 

Affected ADs 

(b) This AD supersedes AD 2005–23–14. 

Applicability 

(c) This AD applies to all EMBRAER Model 

ERJ 170–100 LR, –100 STD, –100 SE, –100 

SU, –200 LR, –200 STD, and –200 SU 

airplanes; and Model ERJ 190–100 STD, –100 

LR, and –100 IGW airplanes; certificated in 

any category. 

Unsafe Condition 

(d) This AD results from a report that an 

engine shut down during flight due to the 

failure of the low-stage check valve to close. 

We are issuing this AD to prevent failure of 

the low-stage check valve, which could result 

in an engine shutting down during flight. 

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. 


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44736 Federal Register / Vol. 72, No. 153 / Thursday, August 9, 2007 / Rules and Regulations 

Restatement of Requirements of AD 2005–

23–14 

Replacement for Right-Hand (RH) Engine on 

Model ERJ 170–100 LR, –100 STD, –100 SE, 

and –100 SU Airplanes With New Service 

Bulletin 

(f) For Model ERJ 170–100 LR, –100 STD, 

–100 SE, and –100 SU airplanes: Within 100 

flight hours after November 29, 2005 (the 

effective date of AD 2005–23–14), or prior to 

the accumulation of 3,000 total flight hours, 

whichever occurs later, replace the low-stage 

check valve and associated seals of the RH 

engine’s engine bleed system with a new 

check valve and new seals, in accordance 

with the Accomplishment Instructions of 

EMBRAER Alert Service Bulletin 170–36–

A004, dated September 28, 2005; or 

paragraph 3.C. of the Accomplishment 

Instructions of EMBRAER Service Bulletin 

170–36–0004, dated November 18, 2005. 

Repeat the replacement thereafter at intervals 

not to exceed 3,000 flight hours. 

Parts Installation for RH Engine on Model 

ERJ 170–100 LR, –100 STD, –100 SE, and 

–100 SU Airplanes 

(g) For Model ERJ 170–100 LR, –100 STD, 

–100 SE, and –100 SU airplanes: As of 

November 29, 2005, no engine may be 

installed in the RH position unless the lowstage check valve has been replaced in 

accordance with the actions required by 

paragraph (f) of this AD. 

Removed Check Valves 

(h) Although EMBRAER Alert Service 

Bulletin 170–36–A004, dated September 28, 

2005, specifies to send removed check valves 

to the manufacturer, this AD does not 

include that requirement. 

New Requirements of This AD 

Replacement for Left-Hand (LH) Engine on 

All Model ERJ 170 Airplanes 

(i) For Model ERJ 170–100 LR, –100 STD, 

–100 SE, –100 SU, –200 LR, –200 STD, and 

–200 SU airplanes: Within 300 flight hours 

after the effective date of this AD or prior to 

the accumulation of 3,000 total flight hours, 

whichever occurs later, replace the low-stage 

check valve and associated seals of the LH 

engine’s engine bleed system with a new 

check valve and new seals, in accordance 

with paragraph 3.B. of the Accomplishment 

Instructions of EMBRAER Service Bulletin 

170–36–0004, dated November 18, 2005. 

Repeat the replacement thereafter at intervals 

not to exceed 3,000 flight hours. 

Replacement for RH Engine on Model ERJ 

190 Airplanes 

(j) For Model ERJ 190–100 STD, –100 LR, 

and –100 IGW airplanes: Within 100 flight 

hours after the effective date of this AD or 

prior to the accumulation of 1,500 total flight 

hours, whichever occurs later, replace the 

low-stage check valve and associated seals of 

the RH engine’s engine bleed system with a 

new check valve and new seals, in 

accordance with paragraph 3.C. of the 

Accomplishment Instructions of EMBRAER 

Service Bulletin 190–36–0004, dated October 

18, 2006; or Revision 01, dated November 14, 

2006. Repeat the replacement thereafter at 

intervals not to exceed 1,500 flight hours. 

Replacement for LH Engine on Model ERJ 

190 Airplanes 

(k) For Model ERJ 190–100 STD, –100 LR, 

and –100 IGW airplanes: Within 600 flight 

hours after the effective date of this AD or 

prior to the accumulation of 1,500 total flight 

hours, whichever occurs later, replace the 

low-stage check valve and associated seals of 

the LH engine’s engine bleed system with a 

new check valve and new seals, in 

accordance with paragraph 3.B. of the 

Accomplishment Instructions of EMBRAER 

Service Bulletin 190–36–0004, dated October 

18, 2006; or Revision 01, dated November 14, 

2006. Repeat the replacement thereafter at 

intervals not to exceed 1,500 flight hours. 

Parts Installation for LH Engine on Model 

ERJ 170 Airplanes 

(l) For Model ERJ 170–100 LR, –100 STD, 

–100 SE, –100 SU, –200 LR, –200 STD, and 

–200 SU airplanes: As of the effective date of 

this AD, no engine may be installed in the 

LH position unless the low-stage check valve 

has been replaced in accordance with the 

actions required by paragraph (i) of this AD. 

Parts Installation for RH and LH Engine on 

Model ERJ 190 Airplanes 

(m) For Model ERJ 190–100 STD, –100 LR, 

and –100 IGW airplanes: As of the effective 

date of this AD; no engine may be installed 

in the RH position unless the low-stage check 

valve has been replaced in accordance with 

the actions required by paragraph (j) of this 

AD; and no engine may be installed in the 

LH position unless the low-stage check valve 

has been replaced in accordance with the 

actions required by paragraph (k) of this AD. 

Removed Check Valves in Accordance With 

New Service Bulletins 

(n) Although EMBRAER Service Bulletin 

170–36–0004, dated November 18, 2005; 

EMBRAER Service Bulletin 190–36–0004, 

dated October 18, 2006; and EMBRAER 

Service Bulletin 190–36–0004, Revision 01, 

dated November 14, 2006; specify to send 

removed check valves to the manufacturer, 

this AD does not include that requirement. 

Alternative Methods of Compliance 

(AMOCs) 

(o)(1) The Manager, International Branch, 

ANM–116, Transport Airplane Directorate, 

FAA, has the authority to approve AMOCs 

for this AD, if requested in accordance with 

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. 

Related Information 

(p) Brazilian airworthiness directive 2005–

09–03R1, effective May 23, 2006; and 

Brazilian airworthiness directive 2006–11–

01R1, effective March 21, 2007; also address 

the subject of this AD. 

Material Incorporated by Reference 

(q) You must use the service information 

identified in Table 1 of this AD, as 

applicable, to perform the actions that are 

required by this AD, unless the AD specifies 

otherwise. 

TABLE 1.—ALL MATERIAL INCORPORATED BY REFERENCE

Service Bulletin Revision level Date 

EMBRAER Alert Service Bulletin 170–36–A004 ............................................................................. Original ...................... September 28, 2005. 

EMBRAER Service Bulletin 170–36–0004 ...................................................................................... Original ...................... November 18, 2005. 

EMBRAER Service Bulletin 190–36–0004 ...................................................................................... Original ...................... October 18, 2006. 

EMBRAER Service Bulletin 190–36–0004 ...................................................................................... 01 .............................. November 14, 2006. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

the documents identified in Table 2 of this 

AD in accordance with 5 U.S.C. 552(a) and 

1 CFR part 51. 

TABLE 2.—NEW MATERIAL INCORPORATED BY REFERENCE

Service Bulletin Revision level Date 

EMBRAER Service Bulletin 170–36–0004 ...................................................................................... Original ...................... November 18, 2005. 

EMBRAER Service Bulletin 190–36–0004 ...................................................................................... Original ...................... October 18, 2006. 


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Federal Register / Vol. 72, No. 153 / Thursday, August 9, 2007 / Rules and Regulations 44737 

TABLE 2.—NEW MATERIAL INCORPORATED BY REFERENCE—Continued 

Service Bulletin Revision level Date 

EMBRAER Service Bulletin 190–36–0004 ...................................................................................... 01 .............................. November 14, 2006. 

(2) On November 29, 2005 (70 FR 69075, 

November 14, 2005), the Director of the 

Federal Register approved the incorporation 

by reference of EMBRAER Alert Service 

Bulletin 170–36–A004, dated September 28, 

2005. 

(3) Contact Empresa Brasileira de 

Aeronautica S.A. (EMBRAER), P.O. Box 

343—CEP 12.225, Sao Jose dos Campos—SP, 

Brazil, for a copy of this service information. 

You may review copies at the FAA, 

Transport Airplane Directorate, 1601 Lind 

Avenue, SW., Renton, Washington; or at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, call 

202–741–6030, or go to: http:// 

www.archives.gov/federal-register/cfr/ibrlocations.html. 

Issued in Renton, Washington, on July 30, 

2007. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E7–15412 Filed 8–8–07; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2007–28036; Directorate 

Identifier 2006–NM–278–AD; Amendment 

39–15145; AD 2007–16–06] 

RIN 2120–AA64 

Airworthiness Directives; Airbus Model 

A330–200 and A330–300 Series 

Airplanes; and Model A340–200, A340–

300, A340–500, and A340–600 Series 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for the 

products listed above. This AD results 

from mandatory continuing 

airworthiness information (MCAI) 

issued by an airworthiness authority of 

another country to identify and correct 

an unsafe condition on an aviation 

product. The MCAI describes the unsafe 

condition as failure of an evacuation 

slide raft to inflate, which could delay 

the evacuation of passengers in case of 

an emergency. We are issuing this AD 

to require actions to correct the unsafe 

condition on these products. 

DATES: This AD becomes effective 

September 13, 2007. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of September 13, 2007. 

ADDRESSES: You may examine the AD 

docket on the Internet at http:// 

dms.dot.gov or in person at the U.S. 

Department of Transportation, Docket 

Operations, M–30, West Building 

Ground Floor, Room W12–140, 1200 

New Jersey Avenue, SE., Washington, 

DC. 

FOR FURTHER INFORMATION CONTACT: Tim 

Backman, Aerospace Engineer, ANM–

116, International Branch, Transport 

Airplane Directorate, FAA, 1601 Lind 

Avenue SW., Renton, Washington 

98057–3356; telephone (425) 227–2797; 

fax (425) 227–1149. 

SUPPLEMENTARY INFORMATION: 

Discussion 

The FAA is implementing a new 

process for streamlining the issuance of 

ADs related to MCAI. This streamlined 

process will allow us to adopt MCAI 

safety requirements in a more efficient 

manner and will reduce safety risks to 

the public. This process continues to 

allow all FAA AD issuance processes to 

meet legal, economic, Administrative 

Procedure Act, and Federal Register 

requirements. We also continue to meet 

our technical decision-making 

responsibilities to identify and correct 

unsafe conditions on U.S.-certificated 

products. 

This AD references the MCAI and 

related service information that we 

considered in forming the engineering 

basis to correct the unsafe condition. 

The AD contains text copied from the 

MCAI and for this reason might not 

follow our plain language principles. 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an AD that would 

apply to the specified products. That 

NPRM was published in the Federal 

Register on April 30, 2007 (72 FR 

21164). That NPRM proposed to require 

a set of modifications of the slide raft 

assembly of each door and the slide raft, 

as applicable, which consists of: 

continuous ‘‘speed lacing’’ cord and 

new soft covers with rounded 

grommets; and a new shorter firing 

cable, a new anchor block for the slide 

raft packboard and a new folding 

procedure. The MCAI states that several 

operators have reported non-automatic 

deployment of slide rafts during ground 

operational testing. In all cases, the slide 

raft released correctly from the door but 

did not inflate automatically. Pulling 

the manual backup handle correctly 

inflated the slide raft. Investigation 

conducted by the slide raft 

manufacturer showed that nonautomatic deployments have two 

potential root causes: non-opening of 

the lacing; and stiffness and stiction 

(static friction) on the painted inflatable 

material. This situation, if not corrected, 

could delay the evacuation of 

passengers in case of an emergency. A 

new design solution has been developed 

to ensure the automatic slide raft 

deployment, which consists of: 

continuous ‘‘speed lacing’’ cord and 

new soft covers with rounded grommets 

(this modification ensures that the 

lacing opens); and a new shorter firing 

cable, a new anchor block for the slide 

raft packboard and a new folding 

procedure (this modification ensures 

automatic deployment regardless of the 

inflatable paint condition). Both 

modifications together ensure the 

automatic deployment function. The 

MCAI requires accomplishment of the 

set of modifications. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

received no comments on the NPRM or 

on the determination of the cost to the 

public. 

Clarification of Applicability 

We have revised the applicability of 

this AD to match the MCAI and the 

current FAA type certification data 

sheet for the affected airplanes. The 

revision clarifies the applicability and 

does not add to or change the affected 

airplanes. 

Conclusion 

We reviewed the available data and 

determined that air safety and the 

public interest require adopting the AD 

with the change described previously. 

We determined that this change will not 

increase the economic burden on any 

operator or increase the scope of the AD. 


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