58962 Federal Register / Vol. 78, No. 186 / Wednesday, September 25, 2013 / Proposed Rules 

For the reasons discussed above, I 

certify this proposed regulation: 

1. Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866; 

2. Is not a ‘‘significant rule’’ under the 

DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979); 

3. Will not affect intrastate aviation in 

Alaska; and 

4. Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

We prepared a regulatory evaluation 

of the estimated costs to comply with 

this proposed AD and placed it in the 

AD docket. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 14 CFR part 

39 as follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new AD: 

BAE SYSTEMS (OPERATIONS) LIMITED: 

Docket No. FAA–2013–0793; Directorate 

Identifier 2012–NM–138–AD. 

(a) Comments Due Date 

We must receive comments by November 

12, 2013. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to BAE SYSTEMS 

(OPERATIONS) LIMITED Model BAe 146– 

100A, –200A, and –300A airplanes; and 

Model Avro 146–RJ70A, 146–RJ85A, and 

146–RJ100A airplanes; certificated in any 

category; all models, all serial numbers. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 26, Fire protection. 

(e) Reason 

This AD was prompted by reports of excess 

solder deposited during overhaul on the 

frangible plug of the extinguisher, which 

prevented the release of the extinguishant. 

We are issuing this AD to prevent the failure 

of a fire extinguisher to discharge, which 

reduces the ability of the fire protection 

system to extinguish fires in the engine or 

APU fire zones, possibly resulting in damage 

to the airplane and injury to the passengers. 

(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) Inspection and Corrective Action 

For airplanes equipped with fire 

extinguishers manufactured by Kidde 

Graviner Limited having part number (P/N) 

57333 (all dash numbers): Within 12 months 

after the effective date of this AD, do an xray inspection to determine if there is solder 

between the operating head and container of 

the fire extinguishers in the engine and 

auxiliary power unit, in accordance with the 

Accomplishment Instructions of BAE 

SYSTEMS (OPERATIONS) LIMITED Service 

Bulletin 26–078, dated September 21, 2011; 

or Kidde Graviner Service Bulletin 26–080, 

Revision 1, dated July 27, 2011; as 

applicable. 

(1) If any solder is found, before further 

flight, do the action specified in paragraph 

(g)(1)(i) or (g)(1)(ii) of this AD, in accordance 

with the Accomplishment Instructions of 

Kidde Graviner Service Bulletin 26–080, 

Revision 1, dated July 27, 2011. 

(i) Overhaul the fire extinguisher and 

install. An overhaul includes the 

replacement of the operating head. 

Replacement of the pressure relief plug 

assembly only is not considered an overhaul. 

(ii) Install a new fire extinguisher. 

(2) If no solder is found, no further action 

is required by this paragraph. 

(h) Parts Installation Limitation 

As of the effective date of this AD, no 

person may install a Kidde Graviner Limited 

fire extinguisher having P/N 57333 (all dash 

numbers), on any airplane, unless the fire 

extinguisher is new, or it has been 

determined that there is no solder between 

the operating head and container of the fire 

extinguishers as required by paragraph (g) of 

this AD, or has been overhauled in 

accordance with the Accomplishment 

Instructions of Kidde Graviner Service 

Bulletin 26–080, Revision 1, dated July 27, 

2011. 

(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, 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: 

Todd Thompson, Aerospace Engineer, 

International Branch, ANM–116, Transport 

Airplane Directorate, FAA, 1601 Lind 

Avenue SW., Renton, WA 98057–3356; 

telephone 425–227–1175; 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) 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. 

(j) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) European 

Aviation Safety Agency (EASA) 

Airworthiness Directive 2012–0126R1, dated 

September 10, 2012, for related information, 

which can be found in the AD docket on the 

Internet at http://www.regulations.gov. 

(2) For BAE SYSTEMS (OPERATIONS) 

LIMITED service information identified in 

this AD, contact BAE SYSTEMS 

(OPERATIONS) LIMITED, Customer 

Information Department, Prestwick 

International Airport, Ayrshire, KA9 2RW, 

Scotland, United Kingdom; telephone +44 

1292 675207; fax +44 1292 675704; email 

RApublications@baesystems.com; Internet 

http://www.baesystems.com/Businesses/

RegionalAircraft/index.htm. For Kidde 

Graviner service information identified in 

this AD, contact Kidde Graviner Limited, 

Methisen Way, Colnbrook, Slough, Berkshire, 

SL3 0HB, United Kingdom; telephone +44 (0) 

1753 683245; fax +44 (0) 1753 685040. 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. 

Issued in Renton, Washington, on 

September 13, 2013. 

Jeffrey E. Duven, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2013–23276 Filed 9–24–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2013–0790; Directorate 

Identifier 2013–NM–061–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to supersede 

airworthiness directive (AD) 89–12–10, 

which applies to certain The Boeing 

Company Model 747 series airplanes. 


TKELLEY on DSK3SPTVN1PROD with PROPOSALS
Federal Register / Vol. 78, No. 186 / Wednesday, September 25, 2013 / Proposed Rules 58963 

AD 89–12–10 currently requires 

replacement of certain underwing fuel 

tank access doors with stronger, fireresistant doors. Since we issued AD 89– 

12–10, we have received reports 

indicating that a standard access door 

was located where an impact-resistant 

access door was required, and stencils 

were missing from some impactresistant access doors. Stencils are 

required to indicate that the door is 

impact-resistant and to indicate the 

correct location for installation of the 

impact-resistant door. This proposed 

AD would require an inspection of the 

left- and right-hand wing fuel tank 

access doors to determine whether 

impact-resistant access doors are 

installed in the correct locations, and 

replacement of any door with an 

impact-resistant access door if 

necessary. This proposed AD would 

also require an inspection for the 

presence of stencils and index markers 

on impact-resistant access doors, and 

application of new stencils or index 

markers if necessary. This proposed AD 

would also require revising the 

maintenance program to incorporate 

changes to the airworthiness limitations 

section. This proposed AD would also 

add airplanes to the applicability. We 

are proposing this AD to prevent foreign 

object penetration of the fuel tank, 

which could cause a fuel leak near an 

ignition source (e.g., hot brakes or 

engine exhaust nozzle), consequently 

leading to a fuel-fed fire. 

DATES: We must receive comments on 

this proposed AD by November 12, 

2013. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, by any of the following 

methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov. Follow the 

instructions for submitting comments. 

• Fax: 202–493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC 20590. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this proposed AD, contact 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 proposed AD, the 

regulatory evaluation, any comments 

received, and other information. The 

street address for the Docket Office 

(phone: 800–647–5527) is in the 

ADDRESSES section. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: 

Suzanne Lucier, Aerospace Engineer, 

Propulsion Branch, ANM–140S, FAA, 

Seattle Aircraft Certification Office, 

1601 Lind Avenue SW., Renton, WA 

98057–3356; phone: 425–917–6438; fax: 

425–917–6590; email: suzanne.lucier@

faa.gov. 

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–2013–0790; Directorate Identifier 

2013–NM–061–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 May 22, 1989, we issued AD 89– 

12–10, Amendment 39–6230 (54 FR 

23643, June 2, 1989) (‘‘AD 89–12–10’’), 

for certain The Boeing Company Model 

747–100, 747–200, 747–300, and 747– 

SP series airplanes. AD 89–12–10 

requires replacement of certain 

underwing fuel tank access doors with 

stronger, fire-resistant doors. AD 89–12– 

10 resulted from several incidents of 

door penetration by tire and engine 

debris, which resulted in spillage of 

significant quantities of fuel. We issued 

AD 89–12–10 to prevent a fire in the 

wing fuel tank. 

Actions Since AD 89–12–10 Was Issued 

Since we issued AD 89–12–10, 

additional access doors, that may be 

installed on additional airplanes that 

were not identified in AD 89–12–10, 

have been identified that may be subject 

to the unsafe condition. Certain doors 

are addressed in other service bulletins. 

Additionally, due to repainting of the 

lower wing skin, stencils that identify 

the access door may no longer be in 

place to provide a visual confirmation 

that the correct door is installed. 

Relevant Service Information 

We reviewed the following service 

information. For information on the 

procedures and compliance times, see 

this service information at http:// 

www.regulations.gov by searching for 

Docket No. FAA–2013–0790. 

• Boeing Service Bulletin 747–28– 

2315, dated January 11, 2012. 

• CDCCL Task 57–AWL–01, ‘‘ImpactResistant Fuel Tank Access Doors,’’ of 

Sub-section B, Airworthiness 

Limitations (AWLs)—Fuel Systems, of 

Section 9, Airworthiness Limitations 

(AWLs) and Certification Maintenance 

Requirements (CMRs) of Boeing 747– 

400 Maintenance Planning Data (MPD) 

Document D621U400, Revision August 

2012. 

• CDCCL Task 57–AWL–01, ‘‘ImpactResistant Fuel Tank Access Doors,’’ of 

Sub-section C, Airworthiness 

Limitations—Fuel Systems, of the 

Boeing 747–100/200/300/SP 

Airworthiness Limitations (AWLs) and 

Certification Maintenance Requirements 

(CMRs) Document D6–13747–CMR, 

Revision August 2012. 

FAA’s Determination 

We are proposing this AD because we 

evaluated all the relevant information 

and determined the unsafe condition 

identified previously is likely to exist or 

develop in other products of these same 

type designs. 

Proposed AD Requirements 

This proposed AD would retain none 

of the requirements of AD 89–12–10. 

Since that AD was issued, the FAA 

issued section 121.316 of the Federal 

Aviation Regulations (14 CFR 121.316) 

requiring that each turbine-powered 

transport category airplane meet the 

requirements of section 25.963(e) of the 

Federal Aviation Regulations (14 CFR 

25.963(e)). Section 25.963(e) outlines 

the certification requirements for fuel 

tank access covers on turbine powered 

transport category airplanes. 


TKELLEY on DSK3SPTVN1PROD with PROPOSALS
58964 Federal Register / Vol. 78, No. 186 / Wednesday, September 25, 2013 / Proposed Rules 

This proposed AD would require 

accomplishing the actions specified in 

the service information described 

previously. This proposed AD would 

add Models 747–400, 747–400D, 747– 

400F, and 747SR series airplanes to the 

applicability, and clarify the 

applicability of AD 89–12–10, 

Amendment 39–6230 (54 FR 23643, 

June 2, 1989) to identify models listed 

in the current type certification data 

sheets (TCDS). 

This proposed AD would also require 

inspecting fuel tank access doors to 

determine that impact-resistant access 

doors are installed in the correct 

locations and replacing any door with 

an impact-resistant access door if 

necessary; inspecting application of 

stencils and index markers of impactresistant access doors and application of 

new stencils or index markers if 

necessary; and revising the maintenance 

program. 

This proposed AD requires revisions 

to certain operator maintenance 

documents to include a new CDCCL. 

Compliance with CDCCLs is required by 

section 91.403(c) of the Federal Aviation 

Regulations (14 CFR 91.403(c)). For 

airplanes that have been previously 

modified, altered, or repaired in the 

areas addressed by this proposed AD, 

the operator might not be able to 

accomplish the actions described in the 

revisions. In this situation, to comply 

with 14 CFR 91.403(c), the operator 

must request approval for an alternative 

method of compliance according to the 

procedures specified in paragraph (j) of 

this proposed AD. The request should 

include a description of changes to the 

required actions that will ensure the 

continued damage tolerance of the 

affected structure. 

After accomplishment of the revision 

required by paragraph (h) of this AD, no 

alternative actions (e.g., inspections), 

intervals, and/or CDCCLs may be used 

unless the actions, intervals, and/or 

CDCCLs are approved as an alternative 

method of compliance (AMOC) in 

accordance with the procedures 

specified in paragraph (j) of this AD. 

Costs of Compliance 

We estimate that this proposed AD 

affects 189 airplanes of U.S. registry. We 

estimate the following costs to comply 

with this proposed AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per product Cost on U.S. operators 

Inspection .................................................. Up to 13 work-hours × $85 per 

hour = $1,105.

$0 Up to $1,105 ........... Up to $208,845. 

Maintenance program revision .................. 1 work-hour × $85 per hour = 

$85.

0 85 ............................ 16,065. 

We estimate the following costs to do 

any necessary replacements that would 

be required based on the results of the 

proposed inspection. We have no way of 

determining the number of aircraft that 

might need these replacements: 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Replacement per door ........................................................................ 3 work-hours × $85 per hour = $255 ..... $8,000 $8,255 

Stencil and index marker (14 doors) .................................................. 17 work-hours × $85 per hour = $1,445 0 1,445 

According to the manufacturer, some 

of the costs of this proposed AD may be 

covered under warranty, thereby 

reducing the cost impact on affected 

individuals. We do not control warranty 

coverage for affected individuals. As a 

result, we have included all costs in our 

cost estimate. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

Section 106, describes the authority of 

the FAA Administrator. Subtitle VII, 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

We are issuing this rulemaking under 

the authority described in Subtitle VII, 

Part A, Subpart III, Section 44701, 

‘‘General requirements.’’ Under that 

section, Congress charges the FAA with 

promoting safe flight of civil aircraft in 

air commerce by prescribing regulations 

for practices, methods, and procedures 

the Administrator finds necessary for 

safety in air commerce. This regulation 

is within the scope of that authority 

because it addresses an unsafe condition 

that is likely to exist or develop on 

products identified in this rulemaking 

action. 

Regulatory Findings 

We 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), 

(3) Will not affect intrastate aviation 

in Alaska, and 

(4) Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 14 CFR part 

39 as follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 


TKELLEY on DSK3SPTVN1PROD with PROPOSALS
Federal Register / Vol. 78, No. 186 / Wednesday, September 25, 2013 / Proposed Rules 58965 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by 

removing airworthiness directive (AD) 

89–12–10, Amendment 39–6230 (54 FR 

23643, June 2, 1989), and adding the 

following new AD: 

The Boeing Company: Docket No. FAA– 

2013–0790; Directorate Identifier 2013– 

NM–061–AD. 

(a) Comments Due Date 

The FAA must receive comments on this 

AD action by November 12, 2013. 

(b) Affected ADs 

This AD supersedes AD 89–12–10, 

Amendment 39–6230 (54 FR 23643, June 2, 

1989). 

(c) Applicability 

This AD applies to The Boeing Company 

Model 747–100, 747–100B, 747–100B SUD, 

747–200B, 747–200C, 747–200F, 747–300, 

747–400, 747–400D, 747–400F, 747SR, and 

747SP series airplanes; certificated in any 

category; as identified in Boeing Service 

Bulletin 747–28–2315, dated January 11, 

2012. 

(d) Subject 

Joint Aircraft System Component (JASC)/

Air Transport Association (ATA) of America 

Code 28, Fuel. 

(e) Unsafe Condition 

This AD was prompted by reports 

indicating that a standard access door was 

located where an impact-resistant access 

door was required, and stencils were missing 

from some impact-resistant access doors. We 

are issuing this AD to prevent foreign object 

penetration of the fuel tank, which could 

cause a fuel leak near an ignition source (e.g., 

hot brakes or engine exhaust nozzle), 

consequently leading to a fuel-fed fire. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Inspection and Corrective Action 

Within 72 months after the effective date 

of this AD, do the actions specified in 

paragraphs (g)(1) and (g)(2) of this AD, in 

accordance with the Accomplishment 

Instructions of Boeing Service Bulletin 747– 

28–2315, dated January 11, 2012. 

(1) Do either a general visual inspection or 

ultrasonic non-destructive test of the left- and 

right-hand wing fuel tank access doors to 

determine whether impact-resistant access 

doors are installed in the correct locations. If 

any standard access door is found, before 

further flight, replace with an impactresistant access door, in accordance with the 

Accomplishment Instructions of Boeing 

Service Bulletin 747–28–2315, dated January 

11, 2012. 

(2) Do a general visual inspection of the 

left- and right-hand wing fuel tank impact 

resistant access doors to verify stencils and 

index markers are applied. If a stencil or 

index marker is missing, before further flight, 

apply a stencil or index marker, as 

applicable, in accordance with the 

Accomplishment Instructions of Boeing 

Service Bulletin 747–28–2315, dated January 

11, 2012. 

(h) Maintenance Program Revisions 

Within 60 days after the effective date of 

this AD do the actions specified in 

paragraphs (h)(1) and (h)(2) of this AD. 

(1) Revise the maintenance program to 

incorporate CDCCL Task 57–AWL–01, 

‘‘Impact-Resistant Fuel Tank Access Doors,’’ 

of Sub-section B, Airworthiness Limitations 

(AWLs)—Fuel Systems, of Section 9, 

Airworthiness Limitations (AWLs) and 

Certification Maintenance Requirements 

(CMRs) of Boeing 747–400 Maintenance 

Planning Data (MPD) Document D621U400, 

Revision August 2012. 

(2) Revise the maintenance program to 

incorporate CDCCL Task 57–AWL–01, 

‘‘Impact-Resistant Fuel Tank Access Doors,’’ 

of Sub-section C, Airworthiness 

Limitations—Fuel Systems, of the Boeing 

747–100/200/300/SP Airworthiness 

Limitations (AWLs) and Certification 

Maintenance Requirements (CMRs) 

Document D6–13747–CMR, Revision August 

2012. 

(i) No Alternative Actions, Intervals, and/or 

Critical Design Configuration Control 

Limitations (CDCCLs) 

After accomplishing the revision required 

by paragraph (h) of this AD, no alternative 

actions (e.g., inspections), intervals, and/or 

CDCCLs may be used unless the actions, 

intervals, and/or CDCCLs are approved as an 

alternative method of compliance (AMOC) in 

accordance with the procedures specified in 

paragraph (j) of this AD. 

(j) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Seattle Aircraft 

Certification Office (ACO), FAA, has the 

authority to approve AMOCs for this AD, if 

requested using the procedures found in 14 

CFR 39.19. In accordance with 14 CFR 39.19, 

send your request to your principal inspector 

or local Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the ACO, send it to the 

attention of the person identified in the 

Related Information section of this AD. 

Information may be emailed to: 9-ANMSeattle-ACO-AMOC-Requests@faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/

certificate holding district office. 

(3) An AMOC that provides an acceptable 

level of safety may be used for any repair 

required by this AD if it is approved by the 

Boeing Commercial Airplanes Organization 

Designation Authorization (ODA) that has 

been authorized by the Manager, Seattle ACO 

to make those findings. For a repair method 

to be approved, the repair must meet the 

certification basis of the airplane, and the 

approval must specifically refer to this AD. 

(k) Related Information 

(1) For more information about this AD, 

contact Suzanne Lucier, Aerospace Engineer, 

Propulsion Branch, ANM–140S, FAA, Seattle 

Aircraft Certification Office, 1601 Lind 

Avenue SW., Renton, WA 98057–3356; 

phone: 425–917–6438; fax: 425–917–6590; 

email: suzanne.lucier@faa.gov. 

(2) 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. 

Issued in Renton, Washington, on 

September 13, 2013. 

Jeffrey E. Duven, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2013–23271 Filed 9–24–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2013–0798; Directorate 

Identifier 2013–NM–087–AD] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc. Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for certain 

Bombardier, Inc. Model BD–100–1A10 

(Challenger 300) airplanes. This 

proposed AD was prompted by multiple 

reports of erratic electrical status 

indications on the push button 

annunciators and the engine instrument 

and crew alerting system. Certain of 

those reported incidents resulted in the 

airplane experiencing a momentary loss 

of electrical power and loss of flight 

displays. This proposed AD would 

require modification of the direct 

current power centers. We are proposing 

this AD to prevent loss of electrical 

power, which could result in the loss of 

flight displays and reduced 

controllability of the airplane. 

DATES: We must receive comments on 

this proposed AD by November 12, 

2013. 

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. 


TKELLEY on DSK3SPTVN1PROD with PROPOSALS