Federal Register / Vol. 79, No. 174 / Tuesday, September 9, 2014 / Rules and Regulations 53285 

For the Nuclear Regulatory Commission. 

Darren B. Ash, 

Acting Executive Director for Operations. 

[FR Doc. 2014–21418 Filed 9–8–14; 8:45 am] 

BILLING CODE 7590–01–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2014–0003; Directorate 

Identifier 2013–NM–103–AD; Amendment 

39–17922; AD 2014–15–19] 

RIN 2120–AA64 

Airworthiness Directives; Gulfstream 

Aerospace LP (Type Certificate 

Previously Held by Israel Aircraft 

Industries, Ltd.) Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: We are superseding 

Airworthiness Directive (AD) 2013–03– 

23 for all Gulfstream Aerospace LP 

(Type Certificate previously held by 

Israel Aircraft Industries, Ltd.) Model 

Gulfstream G150 airplanes. AD 2013– 

03–23 required revising the airplane 

flight manual (AFM) to include 

procedures to advise the flightcrew of 

certain runway slope and anti-ice 

corrections and takeoff distance values. 

This new AD requires revising the 

Performance section of the AFM, which 

includes the revised procedures. This 

AD was prompted by the issuance of a 

revision to the AFM, which modifies 

runway slope and anti-ice corrections to 

both V1 and takeoff distance values. We 

are issuing this AD to prevent the use 

of published, non-conservative data, 

which could result in the inability to 

meet the required takeoff performance, 

with a consequent hazard to safe 

operation during performance-limited 

takeoff operations. 

DATES: This AD becomes effective 

October 14, 2014. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of October 14, 2014. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain other publications listed in 

this AD as of March 26, 2013 (78 FR 

11567, February 19, 2013). 

ADDRESSES: You may examine the AD 

docket on the Internet at http://

www.regulations.gov/

#!docketDetail;D=FAA-2014-0003; or in 

person at the Docket 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. 

For service information identified in 

this AD, contact Gulfstream Aerospace 

Corporation, P.O. Box 2206, Mail 

Station D–25, Savannah, GA 31402– 

2206; telephone 800–810–4853; fax 

912–965–3520; email pubs@

gulfstream.com; Internet http://

www.gulfstream.com/product_support/

technical_pubs/pubs/index.htm. You 

may view this 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. 

FOR FURTHER INFORMATION CONTACT: Tom 

Stafford, Aerospace Engineer, 

International Branch, ANM–116, 

Transport Airplane Directorate, FAA, 

1601 Lind Avenue SW., Renton, WA 

98057–3356; telephone 425–227–1622; 

fax 425–227–1149. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede AD 2013–03–23, 

Amendment 39–17357 (78 FR 11567, 

February 19, 2013). AD 2013–03–23 

applied to all Gulfstream Aerospace LP 

(Type Certificate previously held by 

Israel Aircraft Industries, Ltd.) Model 

Gulfstream G150 airplanes. The NPRM 

published in the Federal Register on 

January 21, 2014 (79 FR 3339). The 

NPRM was prompted by the issuance of 

a revision to the AFM, which modifies 

runway slope and anti-ice corrections to 

both V1 and takeoff distance values. The 

NPRM proposed to continue to require 

revising the AFM to include procedures 

to advise the flightcrew of certain 

runway slope and anti-ice corrections 

and takeoff distance values. The NPRM 

also proposed to require revising the 

Performance section of the AFM, which 

includes the revised procedures. We are 

issuing this AD to prevent the use of 

published, non-conservative data, 

which could result in the inability to 

meet the required takeoff performance, 

with a consequent hazard to safe 

operation during performance-limited 

takeoff operations. 

The Civil Aviation Authority of Israel 

(CAAI), which is the aviation authority 

for Israel, has issued Israeli 

Airworthiness Directive 01–12–02– 

02R1, April 23, 2013 (referred to after 

this as the Mandatory Continuing 

Airworthiness Information, or ‘‘the 

MCAI’’), to correct an unsafe condition 

for the specified products. The MCAI 

states: 

This [CAAI] AD mandates revised 

limitations in the G150 AFM, pertaining to 

the Performance Section. Each operator must 

incorporate Rev.17 to the G150 AFM and 

remove previous AFM TR 3 dated December 

14, 2012. 

You may examine the MCAI in the 

AD docket on the Internet at http://

www.regulations.gov/

#!documentDetail;D=FAA-2014-0003- 

0002. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

received no comments on the NPRM (79 

FR 3339, January 21, 2014) or on the 

determination of the cost to the public. 

‘‘Contacting the Manufacturer’’ 

Paragraph in This AD 

Since late 2006, we have included a 

standard paragraph titled ‘‘Airworthy 

Product’’ in all MCAI ADs in which the 

FAA develops an AD based on a foreign 

authority’s AD. 

The MCAI or referenced service 

information in an FAA AD often directs 

the owner/operator to contact the 

manufacturer for corrective actions, 

such as a repair. Briefly, the Airworthy 

Product paragraph allowed owners/

operators to use corrective actions 

provided by the manufacturer if those 

actions were FAA-approved. In 

addition, the paragraph stated that any 

actions approved by the State of Design 

Authority (or its delegated agent) are 

considered to be FAA-approved. 

In the NPRM (79 FR 3339, January 21, 

2014), we proposed to prevent the use 

of repairs that were not specifically 

developed to correct the unsafe 

condition, by requiring that the repair 

approval provided by the State of 

Design Authority or its delegated agent 

specifically refer to this FAA AD. This 

change was intended to clarify the 

method of compliance and to provide 

operators with better visibility of repairs 

that are specifically developed and 

approved to correct the unsafe 

condition. In addition, we proposed to 

change the phrase ‘‘its delegated agent’’ 

to include a design approval holder 

(DAH) with State of Design Authority 

design organization approval (DOA), as 

applicable, to refer to a DAH authorized 

to approve required repairs for the 

proposed AD. 

No comments were provided to the 

NPRM (79 FR 3339, January 21, 2014) 

about these proposed changes. However, 

a comment was provided for a similar 

NPRM, Directorate Identifier 2012–NM– 

101–AD (78 FR 78285, December 26, 

2013). The commenter stated the 


tkelley on DSK3SPTVN1PROD with RULES
53286 Federal Register / Vol. 79, No. 174 / Tuesday, September 9, 2014 / Rules and Regulations 

following: ‘‘The proposed wording, 

being specific to repairs, eliminates the 

interpretation that Airbus messages are 

acceptable for approving minor 

deviations (corrective actions) needed 

during accomplishment of an AD 

mandated Airbus service bulletin.’’ 

This comment has made the FAA 

aware that some operators have 

misunderstood or misinterpreted the 

Airworthy Product paragraph to allow 

the owner/operator to use messages 

provided by the manufacturer as 

approval of deviations during the 

accomplishment of an AD-mandated 

action. The Airworthy Product 

paragraph does not approve messages or 

other information provided by the 

manufacturer for deviations to the 

requirements of the AD-mandated 

actions. The Airworthy Product 

paragraph only addresses the 

requirement to contact the manufacturer 

for corrective actions for the identified 

unsafe condition and does not cover 

deviations from other AD requirements. 

However, deviations to AD-required 

actions are addressed in 14 CFR 39.17, 

and anyone may request the approval 

for an alternative method of compliance 

to the AD-required actions using the 

procedures found in 14 CFR 39.19. 

To address this misunderstanding and 

misinterpretation of the Airworthy 

Product paragraph, we have changed 

that paragraph and retitled it 

‘‘Contacting the Manufacturer.’’ This 

paragraph now clarifies that for any 

requirement in this AD to obtain 

corrective actions from a manufacturer, 

the action must be accomplished using 

a method approved by the FAA, the 

CAAI, or the CAAI’s authorized 

Designee. It also clarifies that if 

approved by the CAAI Designee, the 

approval must include the Designee’s 

authorized signature. Where necessary 

throughout this AD, we also replaced 

any reference to approvals of corrective 

actions with a reference to the 

Contacting the Manufacturer paragraph. 

The Contacting the Manufacturer 

paragraph also clarifies that, if approved 

by the CAAI Designee, the approval 

must include the Designee’s authorized 

signature. The Designee signature 

indicates that the data and information 

contained in the document are CAAIapproved, which is also FAA-approved. 

Messages and other information 

provided by the manufacturer that do 

not contain the Designee’s authorized 

signature approval are not CAAIapproved, unless the CAAI directly 

approves the manufacturer’s message or 

other information. 

This clarification does not remove 

flexibility previously afforded by the 

Airworthy Product paragraph. 

Consistent with long-standing FAA 

policy, such flexibility was never 

intended for required actions. This is 

also consistent with the 

recommendation of the Airworthiness 

Directive Implementation Aviation 

Rulemaking Committee to increase 

flexibility in complying with ADs by 

identifying those actions in 

manufacturers’ service instructions that 

are ‘‘Required for Compliance’’ with 

ADs. We continue to work with 

manufacturers to implement this 

recommendation. But once we 

determine that an action is required, any 

deviation from the requirement must be 

approved as an alternative method of 

compliance. 

Other commenters to the NPRM 

discussed previously, Directorate 

Identifier 2012–NM–101–AD (78 FR 

78285, December 26, 2013), pointed out 

that in many cases the foreign 

manufacturer’s service bulletin and the 

foreign authority’s MCAI might have 

been issued some time before the FAA 

AD. Therefore, the DOA might have 

provided U.S. operators with an 

approved repair, developed with full 

awareness of the unsafe condition, 

before the FAA AD is issued. Under 

these circumstances, to comply with the 

FAA AD, the operator would be 

required to go back to the 

manufacturer’s DOA and obtain a new 

approval document, adding time and 

expense to the compliance process with 

no safety benefit. 

Based on these comments, we 

removed the requirement that the DAHprovided repair specifically refer to this 

AD. Before adopting such a 

requirement, the FAA will coordinate 

with affected DAHs and verify they are 

prepared to implement means to ensure 

that their repair approvals consider the 

unsafe condition addressed in this AD. 

Any such requirements will be adopted 

through the normal AD rulemaking 

process, including notice-and-comment 

procedures, when appropriate. We also 

have decided not to include a generic 

reference to either the ‘‘delegated agent’’ 

or ‘‘DAH with State of Design Authority 

design organization approval,’’ but 

instead we have provided the specific 

delegation approval granted by the State 

of Design Authority for the DAH in the 

Contacting the Manufacturer paragraph 

of this AD. 

Conclusion 

We reviewed the relevant data and 

determined that air safety and the 

public interest require adopting this AD 

with the changes described previously 

and minor editorial changes. We have 

determined that these minor changes: 

• Are consistent with the intent that 

was proposed in the NPRM (79 FR 3339, 

January 21, 2014) for correcting the 

unsafe condition; and 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM (79 FR 3339, 

January 21, 2014). 

Costs of Compliance 

We estimate that this AD affects 67 

airplanes of U.S. registry. 

We estimate that it will take about 1 

work-hour per product to comply with 

the new basic requirements of this AD. 

The average labor rate is $85 per workhour. Required parts will cost about $0 

per product. Based on these figures, we 

estimate the cost of this AD on U.S. 

operators to be $5,695, or $85 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 


tkelley on DSK3SPTVN1PROD with RULES
Federal Register / Vol. 79, No. 174 / Tuesday, September 9, 2014 / Rules and Regulations 53287 

under the criteria of the Regulatory 

Flexibility Act. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http://

www.regulations.gov/#!docket

Detail;D=FAA-2014-0003; 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 

street address for the Docket Operations 

office (telephone 800–647–5527) is in 

the ADDRESSES section. 

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 

removing Airworthiness Directive (AD) 

2013–03–23, Amendment 39–17357 (78 

FR 11567, February 19, 2013), and 

adding the following new AD: 

2014–15–19 Gulfstream Aerospace LP 

(Type Certificate Previously Held by 

Israel Aircraft Industries, Ltd.): 

Amendment 39–17922. Docket No. 

FAA–2014–0003; Directorate Identifier 

2013–NM–103–AD. 

(a) Effective Date 

This airworthiness directive (AD) becomes 

effective October 14, 2014. 

(b) Affected ADs 

This AD replaces AD 2013–03–23, 

Amendment 39–17357 (78 FR 11567, 

February 19, 2013). 

(c) Applicability 

This AD applies to Gulfstream Aerospace 

LP (Type Certificate previously held by Israel 

Aircraft Industries, Ltd.) Model Gulfstream 

G150 airplanes, certificated in any category, 

all serial numbers. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 01, Operations information. 

(e) Reason 

This AD was prompted by the issuance of 

a revision to the airplane flight manual 

(AFM), which modifies runway slope and 

anti-ice corrections to both V1 and takeoff 

distance values. We are issuing this AD to 

prevent the use of published, nonconservative data, which could result in the 

inability to meet the required takeoff 

performance, with a consequent hazard to 

safe operation during performance-limited 

takeoff operations. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Retained AFM Revision 

This paragraph restates the actions 

required by paragraph (g) of AD 2013–03–23, 

Amendment 39–17357 (78 FR 11567, 

February 19, 2013). Within 60 days after 

March 26, 2013 (the effective date of AD 

2013–03–23), revise Section V, Performance, 

of the Gulfstream G150 AFM to include the 

information in Gulfstream G150 Temporary 

Revision (TR) 3, dated December 14, 2011. 

This TR introduces corrections for runway 

slope. Operate the airplane according to the 

procedures in this TR. 

Note 1 to paragraph (g) of this AD: The 

AFM revision required by paragraph (g) of 

this AD may be done by inserting copies of 

Gulfstream G150 TR 3, dated December 14, 

2011, into the AFM. When this TR has 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 

Gulfstream G150 TR 3, dated December 14, 

2011, and the TR may be removed. 

(h) New AFM Revision 

Within 60 days after the effective date of 

this AD, revise the Gulfstream G150 AFM to 

incorporate the information in Section V, 

Performance, of the Gulfstream G150 AFM 

G150–1001–1, Revision 17, dated April 17, 

2013. Revision 17 of this AFM contains 

revisions of runway slope and anti-ice 

corrections to the V1 and takeoff distance 

values. Before further flight, after 

accomplishing the revision, remove 

Gulfstream G150 TR 3, dated December 14, 

2011, or the information contained in 

Gulfstream G150 TR 3, dated December 14, 

2011, from the AFM. Operate the airplane 

according to the procedures in Section V, 

Performance, of Gulfstream G150 AFM 

G150–1001–1, Revision 17, dated April 17, 

2013. Revising the AFM to Gulfstream G150 

AFM G150–1001–1, Revision 17, dated April 

17, 2013, terminates the action required by 

paragraph (g) of this AD. 

(i) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, International 

Branch, ANM–116, 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: 

Tom Stafford, Aerospace Engineer, 

International Branch, ANM–116, Transport 

Airplane Directorate, FAA, 1601 Lind 

Avenue SW., Renton, WA 98057–3356; 

telephone 425–227–1622; 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/certificate holding 

district office. The AMOC approval letter 

must specifically reference this AD. 

(2) Contacting the Manufacturer: For any 

requirement in this AD to obtain corrective 

actions from a manufacturer, the action must 

be accomplished using a method approved 

by the Manager, International Branch, ANM– 

116, Transport Airplane Directorate, FAA; or 

the Civil Aviation Authority of Israel (CAAI); 

or the CAAI’s authorized Designee. If 

approved by the CAAI Designee, the approval 

must include the Designee’s authorized 

signature. 

(j) Special Flight Permits 

Special flight permits, as described in 

Section 21.197 and Section 21.199 of the 

Federal Aviation Regulations (14 CFR 21.197 

and 21.199), are not allowed. 

(k) Related Information 

Refer to Mandatory Continuing 

Airworthiness Information (MCAI) Israel 

Airworthiness Directive 01–12–02–02–R1, 

dated April 23, 2013, for related information. 

You may examine the MCAI in the AD 

docket on the Internet at http://

www.regulations.gov/

#!documentDetail;D=FAA-2014-0003-0002. 

(l) 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 this AD specifies otherwise. 

(i) Gulfstream G150 AFM G150–1001–1, 

Revision 17, dated April 17, 2013. 

(ii) Reserved. 

(3) The following service information was 

approved for IBR on March 26, 2013 (78 FR 

11567, February 19, 2013). 

(i) Gulfstream G150 Temporary Revision 3, 

dated December 14, 2011, to Section V, 

Performance, of the Gulfstream G150 AFM. 

(ii) Reserved. 

(4) For service information identified in 

this AD, contact Gulfstream Aerospace 

Corporation, P.O. Box 2206, Mail Station D– 

25, Savannah, GA 31402–2206; telephone 

800–810–4853; fax 912–965–3520; email 

pubs@gulfstream.com; Internet http://

www.gulfstream.com/product_support/

technical_pubs/pubs/index.htm. 

(5) You may view this 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. 

(6) You may view this service information 

that is incorporated by reference at the 

National Archives and Records 


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53288 Federal Register / Vol. 79, No. 174 / Tuesday, September 9, 2014 / Rules and Regulations 

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 14, 

2014. 

Michael Kaszycki, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2014–18311 Filed 9–8–14; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2014–0326; Directorate 

Identifier 2013–CE–051–AD; Amendment 

39–17965; AD 2014–18–01] 

RIN 2120–AA64 

Airworthiness Directives; Rockwell 

Collins, Inc. Transponders 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Rockwell Collins TDR–94 and TDR–94D 

Mode select (S) transponders that are 

installed on airplanes. This AD was 

prompted by instances where the TDR– 

94 and TDR–94D Mode S transponders 

did not properly respond to Mode S 

Only All-Call interrogations when the 

airplane transitioned from a ground to 

airborne state. This AD requires 

inspecting the setting of the airplane 

type code category strapping and 

requires either modifying the airplane 

type code category setting or installing 

the software upgrade to convert the 

affected transponders to the new part 

number. We are issuing this AD to 

correct the unsafe condition on these 

products. 

DATES: This AD is effective October 14, 

2014. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of October 14, 2014. 

ADDRESSES: For service information 

identified in this AD, contact Rockwell 

Collins, Inc., Collins Aviation Services, 

350 Collins Road NE., M/S 153–250, 

Cedar Rapids, IA 52498–0001; 

telephone: 888–265–5467 (U.S.) or 319– 

265–5467; fax: 319–295–4941 (outside 

U.S.); email: techmanuals@

rockwellcollins.com; Internet: http://

www.rockwellcollins.com/Services_

and_Support/Publications.aspx. You 

may review this referenced service 

information at the FAA, Small Airplane 

Directorate, 901 Locust, Kansas City, 

Missouri 64106. For information on the 

availability of this material at the FAA, 

call (816) 329–4148. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http://

www.regulations.gov by searching for 

and locating Docket No. FAA–2014– 

0326; 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: Ben 

Tyson, Aerospace Engineer, Wichita 

Aircraft Certification Office, FAA, 1801 

Airport Road, Room 100, Wichita, 

Kansas 67209; phone: 316–946–4174; 

fax: 316–946–4107; email: ben.tyson@

faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to certain Rockwell Collins TDR– 

94 and TDR–94D Mode select (S) 

transponders that are installed on 

airplanes. The NPRM published in the 

Federal Register on May 22, 2014, (79 

FR 29384). The NPRM was prompted by 

instances where the TDR–94 and TDR– 

94D Mode S transponders did not 

properly respond to Mode S Only AllCall interrogations when the airplane 

transitioned from a ground to airborne 

state. 

We were notified that Bombardier 

CL604 airplanes in Eurocontrol airspace 

were not transmitting the appropriate 

Mode S replies. In at least one case, the 

flight crews switched to the other 

installed transponder, resulting in 

normal operation. Rockwell Collins, Inc. 

confirmed that other types of airplane 

could exhibit this same unsafe 

condition. As a result of the issue in 

Eurocontrol airspace, EASA issued 

Airworthiness Directive 2010–0003R1, 

effective date January 11, 2010. 

The TDR–94 and TDR–94D Mode S 

transponder internal software does not 

correctly implement the air/ground 

override function when the airplane 

type code strapping is set to any value 

other than (1) or (0) and the airplane 

rotation speed is greater than 100 knots. 

The error in the air/ground override 

function inhibits the Mode S Only AllCall replies. 

The NPRM proposed to require 

inspecting the setting of the airplane 

type code category strapping and 

require either modifying the airplane 

type code category setting or installing 

the software upgrade to convert the 

affected transponders to the new part 

number. We are issuing this AD to 

correct the unsafe condition on these 

products. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. The 

following presents the comment 

received on the NPRM and the FAA’s 

response to the comment. 

Request 

Kevin Lorrigan requested we add 

Beechcraft Models B300, B300C, and 

Hawker 900XP airplanes to paragraph 

(c), Applicability, to the AD because 

typically these airplanes are equipped 

with the TDR–94 or TDR–94D 

transponders with weight-on-wheels 

input. 

The FAA agrees those airplanes were 

equipped with the TDR–94 or TDR–94D 

transponders when they were delivered 

from the factory. However, we disagree 

with adding these airplanes to 

paragraph (c), Applicability, of the AD. 

After we consulted with Beechcraft and 

reviewed their production records, we 

determined these airplanes are 

unaffected in their original ‘‘asdelivered’’ configurations. The airplanes 

were delivered with the TDR–94 or 

TDR–94D transponders, but they were 

strapped in such a manner that they 

remain unaffected. 

Paragraph (c), Applicability, of this 

AD is not intended as all-inclusive. 

Paragraph (c) of this AD states, ‘‘. . . 

transponders that are installed on but 

not limited to the airplanes . . .’’ and 

gives a partial listing of airplanes known 

to have the affected transponders 

installed. Due to the possibility of 

modification of the airplane after 

delivery, each owner must evaluate the 

airplane’s current configuration to 

determine compliance with the AD. 

We did not change the final rule AD 

action based on this comment. 

Conclusion 

We reviewed the relevant data, 

considered the comment received, and 

determined that air safety and the 

public interest require adopting this AD 

as proposed except for minor editorial 


tkelley on DSK3SPTVN1PROD with RULES