Federal Register / Vol. 78, No. 68 / Tuesday, April 9, 2013 / Proposed Rules 21079 

Bombardier, Inc.: Docket No. FAA–2012– 

1003; Directorate Identifier 2012–NM– 

064–AD. 

(a) Comments Due Date 

We must receive comments by May 24, 

2013. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Bombardier, Inc. Model 

DHC–8–400, –401, and –402 airplanes, 

certificated in any category, serial numbers 

(S/Ns) 4001 through 4399 inclusive. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 26, Fire protection. 

(e) Reason 

This AD was prompted by reports of 

advance pneumatic detectors (APDs) for 

engine fire/overheat detector assemblies 

failing to reset after activation due to 

permanent deformation of the detector 

switch diaphragm after being exposed to high 

temperatures. We are issuing this AD to 

prevent a continued engine fire indication in 

the cockpit after the actual fire has been 

extinguished, which is misleading and might 

influence the pilot to conduct a potentially 

hazardous ‘‘off-airport’’ landing. 

(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) Installation 

Within 6,000 flight hours or 30 months 

after the effective date of this AD, whichever 

occurs first, replace the APDs as specified in 

paragraphs (g)(1), (g)(2), and (g)(3) of this AD, 

as applicable. 

(1) For airplanes having S/Ns 4001 through 

4373 inclusive: For the nacelle of the engine 

primary zone, remove any APD having part 

number (P/N) 10–1098 and install a new APD 

having P/N 10–1098–01, in accordance with 

the Accomplishment Instructions of 

Bombardier Service Bulletin 84–26–08, 

Revision B, dated September 24, 2012. 

(2) For airplanes having S/Ns 4001 through 

4373 inclusive: For the nacelle of the landing 

gear primary zone, remove any APD having 

P/N 10–1097 or 10–1097–01 and install a 

new APD having P/N 10–1097–02, in 

accordance with the Accomplishment 

Instructions of Bombardier Service Bulletin 

84–26–09, Revision A, dated May 12, 2011. 

(3) For all airplanes: For the propeller 

engine controller, remove any APD having P/ 

N 10–1096, 10–1096–01, or 10–1096–02 

(serial number is all numeric characters), and 

install a new APD having P/N 10–1096–02 

(serial number is three alpha and four 

numeric characters), in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 84–26–12, Revision B, dated 

October 12, 2012. 

(h) Credit for Previous Actions 

(1) This paragraph provides credit for 

actions required by paragraph (g)(1) of this 

AD, if those actions were performed before 

the effective date of this AD using the service 

information specified in paragraph (h)(1)(i) or 

(h)(1)(ii) of this AD, which are not 

incorporated by reference in this AD. 

(i) Bombardier Service Bulletin 84–26–08, 

dated March 11, 2011. 

(ii) Bombardier Service Bulletin 84–26–08, 

Revision A, dated May 12, 2011. 

(2) This paragraph provides credit for 

actions required by paragraph (g)(2) of this 

AD, if those actions were performed before 

the effective date of this AD using 

Bombardier Service Bulletin 84–26–09, dated 

March 11, 2011, which is not incorporated by 

reference in this AD. 

(3) This paragraph provides credit for 

actions required by paragraph (g)(3) of this 

AD, if those actions were performed before 

the effective date of this AD using the service 

information specified in paragraph (h)(3)(i) or 

(h)(3)(ii) of this AD, which are not 

incorporated by reference in this AD. 

(i) Bombardier Service Bulletin 84–26–12, 

dated October 12, 2011. 

(ii) Bombardier Service Bulletin 84–26–12, 

Revision A, dated December 13, 2011. 

(i) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York Aircraft 

Certification Office (ACO), ANE–170, 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 ACO, send it to ATTN: 

Program Manager, Continuing Operational 

Safety, FAA, New York ACO, 1600 Stewart 

Avenue, Suite 410, Westbury, NY 11590; 

telephone 516–228–7300; fax 516–794–5531. 

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 MCAI Canadian Airworthiness 

Directive CF–2012–07R1, effective December 

21, 2012; and the service information 

identified in paragraphs (j)(1)(i), (j)(1)(ii), and 

(j)(1)(iii) of this AD; for related information. 

(i) Bombardier Service Bulletin 84–26–08, 

Revision B, dated September 24, 2012. 

(ii) Bombardier Service Bulletin 84–26–09, 

Revision A, dated May 12, 2011. 

(iii) Bombardier Service Bulletin 84–26–12, 

Revision B, dated October 12, 2012. 

(2) For service information identified in 

this AD, contact Bombardier, Inc., Q-Series 

Technical Help Desk, 123 Garratt Boulevard, 

Toronto, Ontario M3K 1Y5, Canada; 

telephone 416–375–4000; fax 416–375–4539; 

email thd.qseries@aero.bombardier.com; 

Internet http://www.bombardier.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 March 

28, 2013. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2013–08203 Filed 4–8–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2013–0297; Directorate 

Identifier 2012–NM–205–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 DHC–8–102, 

–103, and –106 airplanes. This proposed 

AD was prompted by a report of 

cracking in a lower longeron in a 

nacelle. This proposed AD would 

require repetitive inspections for 

cracking of the lower longerons in the 

nacelles and replacement with new 

longerons or repair if necessary. 

Additionally, this proposed AD 

specifies an optional terminating action. 

We are proposing this AD to detect and 

correct such cracking, which could 

result in degradation of the structural 

integrity of the nacelle and possible 

collapse of the main landing gear 

(MLG). 

DATES: We must receive comments on 

this proposed AD by May 24, 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. 

• 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. 


tkelley on DSK3SPTVN1PROD with PROPOSALS
21080 Federal Register / Vol. 78, No. 68 / Tuesday, April 9, 2013 / Proposed Rules 

• Hand Delivery: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC, between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this proposed AD, contact Bombardier, 

Inc., Q-Series Technical Help Desk, 123 

Garratt Boulevard, Toronto, Ontario 

M3K 1Y5, Canada; telephone 416–375– 

4000; fax 416–375–4539; email 

thd.qseries@aero.bombardier.com; 

Internet http://www.bombardier.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 Operations office between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. The AD docket 

contains this proposed AD, the 

regulatory evaluation, any comments 

received, and other information. The 

street address for the Docket Operations 

office (telephone (800) 647–5527) is in 

the ADDRESSES section. Comments will 

be available in the AD docket shortly 

after receipt. 

FOR FURTHER INFORMATION CONTACT: 

Jeffrey Zimmer, Aerospace Engineer, 

Airframe and Mechanical Systems 

Branch, ANE–171, FAA, New York 

Aircraft Certification Office, 1600 

Stewart Avenue, Suite 410, Westbury, 

New York 11590; telephone (516) 228– 

7306; fax (516) 794–5531. 

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–2013–0297; Directorate Identifier 

2012–NM–205–AD’’ at the beginning of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of this proposed AD. We will 

consider all comments received by the 

closing date and may amend this 

proposed AD based on those comments. 

We will post all comments we 

receive, without change, to http:// 

www.regulations.gov, including any 

personal information you provide. We 

will also post a report summarizing each 

substantive verbal contact we receive 

about this proposed AD. 

Discussion 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued Canadian 

Airworthiness Directive CF–2012–27, 

dated November 2, 2012 (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: 

There has been one in-service report where 

a nacelle lower longeron was found to be 

cracked during a routine maintenance 

inspection. The investigation determined that 

the crack initiated from the right-hand side 

(RHS) drain hole. Fatigue testing has 

indicated that both the RHS and left-hand 

side (LHS) longerons are vulnerable to fatigue 

cracking. Failure of the nacelle lower 

longeron would result in a degradation of the 

structural integrity of the nacelle and could 

potentially lead to collapse of the main 

landing gear (MLG). 

This [Canadian] AD mandates initial and 

repeat inspections [for cracking] of the RHS 

and LHS nacelle lower longerons until the 

terminating action is accomplished. 

The initial inspection may be either a 

detailed inspection or a bolt-hole eddy 

current (BHEC) inspection. The 

repetitive inspection is a BHEC 

inspection. The corrective action is 

replacement of the longeron with a new 

longeron or repair. The optional 

terminating action is replacement of the 

nacelle lower longerons, and cold 

working of the drain holes. You may 

obtain further information by examining 

the MCAI in the AD docket. 

Relevant Service Information 

Bombardier, Inc., has issued Service 

Bulletin 8–54–39, Revision A, dated 

August 2, 2012. The actions described 

in this service information are intended 

to correct the unsafe condition 

identified in the MCAI. 

FAA’s Determination and Requirements 

of This Proposed AD 

This product has been approved by 

the aviation authority of another 

country, and is approved for operation 

in the United States. Pursuant to our 

bilateral agreement with the State of 

Design Authority, we have been notified 

of the unsafe condition described in the 

MCAI and service information 

referenced above. We are proposing this 

AD because we evaluated all pertinent 

information and determined an unsafe 

condition exists and is likely to exist or 

develop on other products of the same 

type design. 

Differences Between This AD and the 

MCAI or Service Information 

Although the MCAI and Bombardier 

Service Bulletin 8–54–39, Revision A, 

dated August 2, 2012, specify to contact 

the manufacturer for instructions to 

repair certain conditions, this proposed 

AD would require repairing those 

conditions using a method approved by 

either the Manager, New York Aircraft 

Certification Office (ACO), ANE–170, 

Transport Airplane Directorate, FAA; or 

TCCA (or its delegated agent). 

Costs of Compliance 

Based on the service information, we 

estimate that this proposed AD would 

affect about 51 products of U.S. registry. 

We also estimate that it would take 

about 21 work-hours per product to 

comply with the basic requirements of 

this proposed AD. The average labor 

rate is $85 per work-hour. Based on 

these figures, we estimate the cost of the 

proposed AD on U.S. operators to be 

$37,485, or $1,785 per product. 

In addition, we estimate that any 

necessary follow-on actions would take 

about 100 work-hours and require parts 

costing $23,849, for a cost of $32,349 

per product. We have no way of 

determining the number of products 

that may need these actions. 

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 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 


tkelley on DSK3SPTVN1PROD with PROPOSALS
Federal Register / Vol. 78, No. 68 / Tuesday, April 9, 2013 / Proposed Rules 21081 

responsibilities among the various 

levels of government. 

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: 

Bombardier, Inc.: Docket No. FAA–2013– 

0297; Directorate Identifier 2012–NM– 

205–AD. 

(a) Comments Due Date 

We must receive comments by May 24, 

2013. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Bombardier, Inc. Model 

DHC–8–102, –103 airplanes, and airplanes 

converted to Model DHC–8–106 in 

accordance with Bombardier Service Bulletin 

8–92–07 or Bombardier Service Bulletin 8– 

92–08, serial numbers 003 through 287 

inclusive, with pre-modification 8/1593 

nacelle lower longeron installed, certificated 

in any category. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 54, Nacelles/pylons. 

(e) Reason 

This AD was prompted by a report of 

cracking in a lower longeron in a nacelle. We 

are issuing this AD to detect and prevent 

such cracking, which could result in 

degradation of the structural integrity of the 

nacelle and possible collapse of the main 

landing gear (MLG). 

(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) Initial Inspection 

At the applicable time specified in 

paragraph (g)(1), (g)(2), (g)(3) or (g)(4) of this 

AD: Do a detailed visual inspection or a bolthole eddy current (BHEC) test for cracking of 

each nacelle lower longeron, in accordance 

with the Accomplishment Instructions of 

Bombardier Service Bulletin 8–54–39, 

Revision A, dated August 2, 2012. 

(1) For Model DHC–8–102 and –103 

airplanes that have accumulated 35,000 total 

flight cycles or less as of the effective date 

of this AD: Within 5,000 flight cycles after 

the effective date of this AD, but not to 

exceed 36,000 total flight cycles. 

(2) For Model DHC–8–102 and –103 

airplanes that have accumulated more than 

35,000 total flight cycles as of the effective 

date of this AD: Within 1,000 flight cycles 

after the effective date of this AD. 

(3) For Model DHC–8–106 airplanes with 

the Pre-Modification 8/1641 configuration, 

within 500 flight cycles after the effective 

date of this AD. 

(4) For Model DHC–8–106 airplanes with 

the Post-Modification 8/1641 configuration, 

within 5,000 flight cycles after the effective 

date of this AD. 

(h) Repetitive BHEC Testing 

After accomplishment of the actions 

required by paragraph (g) of this AD, at the 

applicable time specified in paragraph (h)(1) 

or (h)(2) of this AD: Do repetitive BHEC 

testing for cracking of each nacelle lower 

longeron, in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 8–54–39, Revision A, dated 

August 2, 2012, until the terminating action 

specified in paragraph (j) of this AD is done. 

(1) For Model DHC–8–102 and 103 

airplanes, at intervals not to exceed 2,500 

flight cycles. 

(2) For Model DHC–8–106 airplanes, at 

intervals not to exceed 1,854 flight cycles. 

(i) Replacement or Repair of Crack Longeron 

If any cracking is found during any 

inspection required by paragraph (g) or (h) of 

this AD: Before further flight, replace any 

cracked nacelle lower longeron with a new 

longeron, in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 8–54–39, Revision A, dated 

August 2, 2012; or repair the longeron using 

a method approved by either the Manager, 

New York ACO, ANE–170, FAA; or 

Transport Canada Civil Aviation (TCCA) (or 

its delegated agent). 

(j) Optional Terminating Action 

Accomplishment of the actions specified in 

paragraphs (j)(1) and (j)(2) of this AD 

constitutes terminating action for the 

repetitive BHEC testing specified in 

paragraph (h) of this AD for that longeron 

only. 

(1) Replacement of the nacelle lower 

longeron, in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 8–54–39, Revision A, dated 

August 2, 2012. 

(2) Cold working of the drain holes, in 

accordance with the Accomplishment 

Instructions of Bombardier Service Bulletin 

8–54–39, Revision A, dated August 2, 2012. 

(k) 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 Bombardier Service 

Bulletin 8–54–39, dated March 14, 2012, 

which is not incorporated by reference in this 

AD. 

(l) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York ACO, 

ANE–170, 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 ATTN: 

Program Manager, Continuing Operational 

Safety, FAA, New York ACO, 1600 Stewart 

Avenue, Suite 410, Westbury, New York 

11590; telephone (516) 228–7300; fax (516) 

794–5531. 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. 

(m) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) Canadian 

Airworthiness Directive CF–2012–27, dated 

November 2, 2012; and Bombardier Service 

Bulletin 8–54–39, Revision A, dated August 

2, 2012; for related information. 

(2) For service information identified in 

this AD, contact Bombardier, Inc., Q-Series 

Technical Help Desk, 123 Garratt Boulevard, 

Toronto, Ontario M3K 1Y5, Canada; 

telephone 416–375–4000; fax 416–375–4539; 

email thd.qseries@aero.bombardier.com; 

Internet http://www.bombardier.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. 


tkelley on DSK3SPTVN1PROD with PROPOSALS
21082 Federal Register / Vol. 78, No. 68 / Tuesday, April 9, 2013 / Proposed Rules 

Issued in Renton, Washington, on March 

28, 2013. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2013–08205 Filed 4–8–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2013–0315; Directorate 

Identifier 2013–CE–006–AD] 

RIN 2120–AA64 

Airworthiness Directives; GROB– 

WERKE Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for GROB– 

WERKE GMBH & CO KG Model G 115E 

airplanes. This proposed AD results 

from mandatory continuing 

airworthiness information (MCAI) 

originated by an aviation authority of 

another country to identify and correct 

an unsafe condition on an aviation 

product. The MCAI describes the unsafe 

condition as incorrect cable routing 

causing electrical shorting behind the 

left-hand (LH) cockpit instrument panel. 

We are issuing this proposed AD to 

require actions to address the unsafe 

condition on these products. 

DATES: We must receive comments on 

this proposed AD by May 24, 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. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC 20590. 

• Hand Delivery: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC 20590, between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. 

For service information identified in 

this proposed AD, contact Grob Aircraft 

AG, Customer Service, 

Lettenbachstrasse 9, 86874 

Tussenhausen-Mattsies, Germany, 

telephone: + 49 (0) 8268–998–105; fax; 

+ 49 (0) 8268–998–200; email: 

productsupport@grob-aircraft.com; 

Internet: grob-aircraft.com. You may 

review copies of the 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; or in person at the 

Docket Management Facility between 9 

a.m. and 5 p.m., Monday through 

Friday, except Federal holidays. The AD 

docket contains this proposed AD, the 

regulatory evaluation, any comments 

received, and other information. The 

street address for the Docket Office 

(telephone (800) 647–5527) is in the 

ADDRESSES section. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: 

Taylor Martin, Aerospace Engineer, 

FAA, Small Airplane Directorate, 901 

Locust, Room 301, Kansas City, 

Missouri 64106; telephone: (816) 329– 

4138; fax: (816) 329–4090; email: 

taylor.martin@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–2013–0315; Directorate Identifier 

2013–CE–006–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:// 

regulations.gov, including any personal 

information you provide. We will also 

post a report summarizing each 

substantive verbal contact we receive 

about this proposed AD. 

Discussion 

The European Aviation Safety Agency 

(EASA), which is the Technical Agent 

for the Member States of the European 

Community, has issued AD No.: 2013– 

0017, dated January 17, 2013 (referred to 

after this as ‘‘the MCAI’’), to correct an 

unsafe condition for the specified 

products. The MCAI states: 

Occurrences were reported of finding an 

electrical shorting of main cable loom behind 

the left-hand (LH) instrument panel of some 

Grob G115E aeroplanes. In one case, the main 

cable loom arcing caused an Electronic 

Horizontal Situation Indicator failure. During 

the fleet checks, additional cases of main 

cable loom routing and consequent rubbing 

with Omni Bearing Selector behind the 

cockpit instrument panel were identified, 

while the cable routing was not in conformity 

with the approved type design. 

The investigation results concluded that 

the instrument panels of affected aeroplanes 

were removed and subsequently re-installed, 

in service, during embodiment of various 

optional modifications. 

This condition, if not detected and 

corrected, could lead to smoke in the cockpit 

and/or functional loss of navigation 

equipment and instruments. 

To address this potential unsafe condition, 

Grob Aircraft AG published Mandatory 

Service Bulletin (MSB) MSB1078–191/1, 

providing instructions to inspect and correct 

the cable routing behind the cockpit 

instrument panel. 

For the reason described above, this AD 

requires accomplishment of a one- time 

inspection to verify correct cable routing 

behind the LH cockpit instrument panel and, 

depending on findings, correction and 

replacement of damaged parts. 

You may obtain further information by 

examining the MCAI in the AD docket. 

Relevant Service Information 

GROB–WERKE has issued Service 

Bulletin No. MSB1078–191/1, dated 

January 15, 2013. The actions described 

in this service information are intended 

to correct the unsafe condition 

identified in the MCAI. 

FAA’s Determination and Requirements 

of the Proposed AD 

This product has been approved by 

the aviation authority of another 

country, and is approved for operation 

in the United States. Pursuant to our 

bilateral agreement with this State of 

Design Authority, they have notified us 

of the unsafe condition described in the 

MCAI and service information 

referenced above. We are proposing this 

AD because we evaluated all 

information and determined the unsafe 

condition exists and is likely to exist or 

develop on other products of the same 

type design. 

Costs of Compliance 

We estimate that this proposed AD 

will affect 0 products of U.S. registry. 

We also estimate that it would take 

about 1 work-hour per product to 

comply with the basic requirements of 

this proposed AD. The average labor 

rate is $85 per work-hour. Required 

parts would cost about $10 per product. 


tkelley on DSK3SPTVN1PROD with PROPOSALS