Federal Register / Vol. 77, No. 237 / Monday, December 10, 2012 / Rules and Regulations 73279 

(f) Special Flight Permits 

Special flight permits will not be issued. 

(g) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Safety Management 

Group, FAA, may approve AMOCs for this 

AD. Send your proposal to: Robert Grant, 

Aviation Safety Engineer, Safety Management 

Group, FAA, 2601 Meacham Blvd., Fort 

Worth, Texas 76137; telephone 817–222– 

5328; email robert.grant@faa.gov. 

(2) For operations conducted under a 14 

CFR part 119 operating certificate or under 

14 CFR part 91, subpart K, we suggest that 

you notify your principal inspector, or 

lacking a principal inspector, the manager of 

the local flight standards district office or 

certificate holding district office, before 

operating any aircraft complying with this 

AD through an AMOC. 

(h) Additional Information 

(1) Agusta Bollettino Tecnico No. 139–308, 

dated October 16, 2012, which is not 

incorporated by reference, contains 

additional information about the subject of 

this AD. For a copy of the service information 

referenced in this AD, contact: 

AgustaWestland, Customer Support & 

Services, Via Per Tornavento 15, 21019 

Somma Lombardo (VA) Italy, ATTN: 

Giovanni Cecchelli; telephone 39–0331– 

711133; fax 39 0331 711180; or at http:// 

www.agustawestland.com/technicalbulletins. You may review a copy of the 

service information at the FAA, Office of the 

Regional Counsel, Southwest Region, 2601 

Meacham Blvd., Room 663, Fort Worth, 

Texas 76137. 

(2) The subject of this AD is discussed in 

European Aviation Safety Agency AD No. 

2012–0213–E, dated October 16, 2012. 

(i) Subject 

Joint Aircraft Service Component (JASC) 

Code: 2700: Flight Controls. 

Issued in Fort Worth, Texas, on December 

3, 2012. 

Kim Smith, 

Directorate Manager, Rotorcraft Directorate, 

Aircraft Certification Service. 

[FR Doc. 2012–29716 Filed 12–7–12; 8:45 am] 

BILLING CODE 4910–13–C 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–0672; Directorate 

Identifier 2011–NM–261–AD; Amendment 

39–17276; AD 2012–24–06] 

RIN 2120–AA64 

Airworthiness Directives; Saab AB, 

Saab Aerosystems Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Saab AB, Saab Aerosystems Model 340A 

(SAAB/SF340A) and SAAB 340B 

airplanes. This AD was prompted by 

reports of stall events during icing 

conditions where the natural stall 

warning (buffet) was not identified. This 

AD requires replacing the stall warning 

computer (SWC) with a new SWC, 

which provides an artificial stall 


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warning in icing conditions, and 

modifying the airplane for the 

replacement of the SWC. We are issuing 

this AD to prevent natural stall events 

when operating in icing conditions, 

which, if not corrected, could result in 

loss of control of the airplane. 

DATES: This AD becomes effective 

January 14, 2013. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of January 14, 2013. 

ADDRESSES: You may examine the AD 

docket on the Internet at http:// 

www.regulations.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: 

Shahram Daneshmandi, Aerospace 

Engineer, International Branch, ANM– 

116, Transport Airplane Directorate, 

FAA, 1601 Lind Avenue SW., Renton, 

Washington 98057–3356; telephone 

(425) 227–1112; fax (425) 227–1149. 

SUPPLEMENTARY INFORMATION: 

Discussion 

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 June 27, 2012 (77 FR 38224). 

That NPRM proposed to correct an 

unsafe condition for the specified 

products. The Mandatory Continuing 

Airworthiness Information (MCAI) 

states: 

A few natural stall events, specifically 

when operating in icing conditions, have 

been experienced on SAAB 340 series 

aeroplanes, without receiving a prior stall 

warning. This condition, if not corrected, 

could result in loss of control of the 

aeroplane. 

To address this potential unsafe condition, 

a modified stall warning system, 

incorporating improved stall warning logic, 

has been developed. 

SAAB have issued Service Bulletin (SB) 

340–27–098 and SB 340–27–099, which 

include instructions to replace the present 

Stall Warning Computer (SWC) with a new 

SWC, and instructions to activate the new 

SWC. The new system includes stall warning 

curves optimized for operation in icing 

conditions, which are activated by selection 

of Engine Anti-Ice. 

For the reasons described above, this 

[European Aviation Safety Agency (EASA)] 

AD requires the replacement of the SWC, by 

installing new SWC Part Number (P/N) 

0020AK6 on aeroplanes with basic wing tip, 

and installing a new SWC P/N 0020AK7 on 

aeroplanes with extended wing tip, as 

applicable to aeroplane configuration. 

You may obtain further information by 

examining the MCAI in the AD docket. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

considered the comments received. The 

National Transportation Safety Board 

stated that it supports the NPRM (77 FR 

38224, June 27, 2012). 

Request To Revise Company Name and 

Email Address 

Saab AB (the commenter) requested 

that we revise the NPRM (77 FR 38224, 

June 27, 2012) throughout to change the 

name of the Saab company referenced in 

the NPRM from ‘‘Saab AB, Saab 

Aerosystems’’ to the new company 

name, ‘‘Saab AB, Aeronautics.’’ The 

commenter also requested to change the 

company email address referenced in 

the NPRM from ‘‘saab2000tech

support@saabgroup.com’’ to ‘‘saab340

techsupport@saabgroup.com.’’ 

We agree with the intent of the 

commenter’s request. The FAA is in the 

process of changing the type certificate 

data sheet (TCDS) to reflect the name 

change. We will use the name identified 

in the current TCDS so as not to delay 

issuance of the final rule. Once the 

TCDS has been changed, we will use the 

new name in subsequent ADs. We 

changed the email address appropriately 

in paragraph (m) of this AD. 

Request To Revise Text in Summary 

Section and Paragraph (e) of the NPRM 

(77 FR 38224, June 27, 2012) 

Saab AB requested that we revise the 

second and third sentences in the 

Summary section and a related sentence 

in paragraph (e) of the NPRM (77 FR 

38224, June 27, 2012). In the Summary 

section, the commenter requested that 

we revise the following text to clarify 

that the airplane had been certified with 

natural buffet—as the stall warning—in 

icing conditions, and explained that 

replacement of the SWC would increase 

the safety level by introducing an 

artificial stall warning for icing 

conditions. 

This proposed AD was prompted by 

reports of stall events during icing conditions 

which were not accompanied with a prior 

stall warning. This proposed AD would 

require replacing the stall warning computer 

(SWC) with a new SWC, and modifying the 

airplane for the replacement of the SWC. 

The commenter suggested the 

following text. 

This proposed AD was prompted by 

reports of stall events during icing conditions 

where the natural stall warning (buffet) was 

not identified. This proposed AD would 

require replacing the stall warning computer 

(SWC) with a new SWC, which provides an 

artificial stall warning in icing conditions, 

and modifying the airplane for the 

replacement of the SWC. 

The commenter also requested that 

the first sentence in paragraph (e) of the 

NPRM (77 FR 38224, June 27, 2012) be 

changed to match the new wording. 

We agree with the request for the 

reasons provided by the commenter. 

Therefore, we changed the wording in 

the Summary section and paragraph (e) 

of this AD as proposed by the 

commenter. 

Request To Revise Text in Paragraph (i) 

of the NPRM (77 FR 38224, June 27, 

2012) 

Saab AB requested that we revise 

paragraph (i) of the NPRM (77 FR 38224, 

June 27, 2012), which reads ‘‘As of 

effective date of this AD, do not install 

any SWC having P/N 0020AK, 

0020AK1, 0020AK2, 0020AK4, or 

0020AK3 MOD 1 on any airplane,’’ to 

‘‘After modification of an airplane as 

required by paragraph (g) and (h) of this 

AD, do not install any SWC having P/ 

N 0020AK, 0020AK1, 0020AK2, 

0020AK4, or 0020AK3 MOD 1 on any 

airplane.’’ The commenter stated that 

this change would allow an operator, 

during the compliance time, to install 

an SWC having the same part number of 

the failed SWC. 

We agree because there is a potential 

problem with availability of the new 

part. Therefore, we have changed the 

wording in paragraph (i) of this AD to 

match the intent of the commenter’s 

request. 

Conclusion 

We reviewed the available data, 

including the comments received, and 

determined that air safety and the 

public interest require adopting the AD 

with the changes described previously— 

except for minor editorial changes. We 

have determined that these changes: 

• Are consistent with the intent that 

was proposed in the NPRM (77 FR 

38224, June 27, 2012) for correcting the 

unsafe condition; and 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM (77 FR 38224, 

June 27, 2012). 

Costs of Compliance 

We estimate that this AD will affect 

162 products of U.S. registry. We also 

estimate that it will take about 78 workhours per product to comply with the 

basic requirements of this AD. The 

average labor rate is $85 per work-hour. 

Required parts will cost about $33,000 

per product. Where the service 

information lists required parts costs 

that are covered under warranty, we 


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Federal Register / Vol. 77, No. 237 / Monday, December 10, 2012 / Rules and Regulations 73281 

have assumed that there will be no 

charge for these parts. As we do not 

control warranty coverage for affected 

parties, some parties may incur costs 

higher than estimated here. Based on 

these figures, we estimate the cost of 

this AD to the U.S. operators to be 

$6,420,060, or $39,630 per product. 

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 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 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. 

We prepared a regulatory evaluation 

of the estimated costs to comply with 

this AD and placed it in the AD docket. 

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 the NPRM (77 FR 38224, June 

27, 2012), 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. 

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 FAA amends § 39.13 by adding 

the following new AD: 

2012–24–06 Saab AB, Saab Aerosystems: 

Amendment 39–17276. Docket No. 

FAA–2012–0672; Directorate Identifier 

2011–NM–261–AD. 

(a) Effective Date 

This airworthiness directive (AD) becomes 

effective January 14, 2013. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Saab AB, Saab 

Aerosystems Model 340A (SAAB/SF340A) 

and SAAB 340B airplanes, certificated in any 

category, as identified in paragraphs (c)(1) 

and (c)(2) of this AD, except airplanes that 

have SAAB Modification 2650 and/or 2859 

installed. This AD does not apply to 

airplanes with serial numbers 170, 342, 362, 

363, 367, 372, 379, 385, 395, 405, 409, 431, 

and 455. 

(1) Model 340A (SAAB/SF340A) airplanes, 

serial numbers 004 through 159 inclusive. 

(2) Model SAAB 340B airplanes, serial 

numbers 160 through 459 inclusive. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 27: Flight Controls. 

(e) Reason 

This AD was prompted by reports of stall 

events during icing conditions where the 

natural stall warning (buffet) was not 

identified. We are issuing this AD to prevent 

natural stall events when operating in icing 

conditions, which, if not corrected, could 

result in loss of control of the airplane. 

(f) Compliance 

You are responsible for having the actions 

required by this AD performed within the 

compliance times specified, unless the 

actions have already been done. 

(g) Replacement 

(1) For airplanes with basic wing tips: 

Within 24 months after the effective date of 

this AD, replace all stall warning computers 

(SWCs) having part number (P/N) 0020AK, 

0020AK1, 0020AK2, or 0020AK4, with a new 

SWC P/N 0020AK6, in accordance with the 

Accomplishment Instructions of Saab Service 

Bulletin 340–27–098, Revision 01, dated 

April 13, 2012. 

(2) For airplanes with extended wing tips: 

Within 24 months after the effective date of 

this AD, replace the SWC P/N 0020AK3 MOD 

1 with a new SWC P/N 0020AK7, in 

accordance with the Accomplishment 

Instructions of Saab Service Bulletin 340–27– 

099, Revision 01, dated April 13, 2012. 

(h) Concurrent Modification 

Before or concurrently with the 

accomplishment of the requirements of 

paragraph (g) of this AD: Modify the airplane 

in accordance with the Accomplishment 

Instructions of Saab Service Bulletin 340–27– 

097, Revision 03, dated April 19, 2012. 

(i) Parts Installation Prohibition 

After accomplishing the replacement 

required by paragraph (g) of this AD and the 

modification required by paragraph (h) of 

this AD, do not install any SWC having P/ 

N 0020AK, 0020AK1, 0020AK2, 0020AK4, or 

0020AK3 MOD 1 on any airplane. 

(j) Credit for Previous Actions 

This paragraph provides credit for actions 

required by paragraph (h) of this AD, if those 

actions were performed before the effective 

date of this AD using the service bulletin 

specified in paragraph (j)(1), (j)(2), or (j)(3) of 

this AD, which are not incorporated by 

reference in this AD. 

(1) Saab Service Bulletin 340–27–097, 

dated September 1, 2011. 

(2) Saab Service Bulletin 340–27–097, 

Revision 01, dated September 26, 2011. 

(3) Saab Service Bulletin 340–27–097, 

Revision 02, dated October 7, 2011. 

(k) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, ANM–116, 

International Branch, Transport Airplane 

Directorate, 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 International Branch, send it to ATTN: 

Shahram Daneshmandi, Aerospace Engineer, 

International Branch, ANM–116, Transport 

Airplane Directorate, FAA, 1601 Lind 

Avenue SW., Renton, Washington 98057– 

3356; telephone (425) 227–1112; fax (425) 

227–1149. Information may be emailed to: 9- 

ANM-116-AMOC-REQUESTS@faa.gov. 

Before using any approved AMOC, notify 

your appropriate principal inspector, or 

lacking a principal inspector, the manager of 

the local flight standards district office/ 


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73282 Federal Register / Vol. 77, No. 237 / Monday, December 10, 2012 / Rules and Regulations 

certificate holding district office. The AMOC 

approval letter must specifically reference 

this AD. 

(2) Airworthy Product: For any requirement 

in this AD to obtain corrective actions from 

a manufacturer or other source, use these 

actions if they are FAA-approved. Corrective 

actions are considered FAA-approved if they 

are approved by the State of Design Authority 

(or their delegated agent). You are required 

to assure the product is airworthy before it 

is returned to service. 

(l) Related Information 

Refer to MCAI European Aviation Safety 

Agency Airworthiness Directive 2011–0219, 

dated November 11, 2011, and the service 

information specified in paragraphs (l)(1) 

through (l)(3) of this AD, for related 

information. 

(1) Saab Service Bulletin 340–27–097, 

Revision 03, dated April 19, 2012. 

(2) Saab Service Bulletin 340–27–098, 

Revision 01, dated April 13, 2012. 

(3) Saab Service Bulletin 340–27–099, 

Revision 01, dated April 13, 2012. 

(m) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless the AD specifies otherwise. 

(i) Saab Service Bulletin 340–27–097, 

Revision 03, dated April 19, 2012. 

(ii) Saab Service Bulletin 340–27–098, 

Revision 01, dated April 13, 2012. 

(iii) Saab Service Bulletin 340–27–099, 

Revision 01, dated April 13, 2012. 

(3) For service information identified in 

this AD, contact Saab AB, Saab Aeronautics, 

SE–581 88, Linko ̈ping, Sweden; telephone 

+46 13 18 5591; fax +46 13 18 4874; email 

saab340techsupport@saabgroup.com; 

Internet http://www.saabgroup.com. 

(4) 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. 

(5) You may view this service information 

that is incorporated by reference 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 

November 21, 2012. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2012–29169 Filed 12–7–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–0186; Directorate 

Identifier 2011–NM–268–AD; Amendment 

39–17278; AD 2012–24–08] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

The Boeing Company Model 737–600, 

–700, –700C, –800, –900, and –900ER 

series airplanes. This AD was prompted 

by reports of flight crew failure to 

activate air data probe heat. This AD 

requires modifying the anti-icing system 

for the angle of attack sensor, the total 

air temperature, and the pitot probes. 

We are issuing this AD to prevent ice 

from forming on air data system sensors 

and consequent loss of or misleading 

airspeed indication on all airspeed 

indicating systems, which could lead to 

loss of control of the airplane. 

DATES: This AD is effective January 14, 

2013. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in the AD 

as of January 14, 2013. 

ADDRESSES: For service information 

identified in this AD, contact Boeing 

Commercial Airplanes, Attention: Data 

& Services Management, P.O. Box 3707, 

MC 2H–65, Seattle, WA 98124–2207; 

telephone 206–544–5000, extension 1; 

fax 206–766–5680; Internet https:// 

www.myboeingfleet.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. 

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 AD, the regulatory 

evaluation, any comments received, and 

other information. The address for the 

Docket Office (phone: 800–647–5527) is 

Document Management Facility, U.S. 

Department of Transportation, Docket 

Operations, M–30, West Building 

Ground Floor, Room W12–140, 1200 

New Jersey Avenue SE., Washington, 

DC 20590. 

FOR FURTHER INFORMATION CONTACT: 

Frank Carreras, Aerospace Engineer, 

Systems and Equipment Branch, ANM– 

130S, FAA, Seattle Aircraft Certification 

Office (ACO), 1601 Lind Avenue SW., 

Renton, WA 98057–3356; phone: 425– 

917–6442; fax: 425–917–6590; email: 

frank.carreras@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

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 published in the Federal 

Register on February 28, 2012 (77 FR 

11789). That NPRM proposed to require 

modifying the anti-icing system for the 

angle of attack sensor, the total air 

temperature, and the pitot probes. 

Actions Since Issuance of NPRM (77 FR 

11789, February 28, 2012) 

Since we issued the NPRM (77 FR 

11789, February 28, 2012), we reviewed 

Boeing Alert Service Bulletin 737– 

30A1063, Revision 1, dated July 10, 

2012. (The NPRM referred to Boeing 

Alert Service Bulletin 737–30A1063, 

dated November 16, 2011.) Among other 

things, Boeing Alert Service Bulletin 

737–30A1063, Revision 1, dated July 10, 

2012, updates certain information, 

including part numbers, various 

accomplishment steps, certain modules, 

maintenance manuals, and kit 

information. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. The 

following presents the comments 

received on the proposal (77 FR 11789, 

February 28, 2012) and the FAA’s 

response to each comment. Aviation 

Partners Boeing stated that installation 

of winglets per STC ST00830SE does 

not affect the NPRM and stated it would 

provide supporting data to the FAA 

upon request. 

Request To Revise Compliance Time 

Seven commenters requested that we 

revise the 24-month compliance time, as 

proposed in the NPRM (77 FR 11789, 

February 28, 2012). 

Korean Air Lines (KAL), Air Pacific 

Limited (APC), Delta Air Lines, Inc. 

(DAL), American Airlines (AAL), United 

Airlines (UAL), and Southwest Airlines 

(SWA) requested we extend the 

compliance time. UAL and AAL 

requested we take into account the time 

needed to obtain modification kits and 


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