12366 Federal Register / Vol. 79, No. 43 / Wednesday, March 5, 2014 / Rules and Regulations 

(i) Boeing Alert Service Bulletin 777– 

34A0191, Revision 1, dated March 23, 2012. 

(ii) Boeing Alert Service Bulletin 777– 

34A0192, dated December 14, 2012. 

(3) For Boeing 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. 

(4) 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. 

(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 February 

7, 2014. 

Jeffrey E. Duven, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2014–04548 Filed 3–4–14; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–1226; Directorate 

Identifier 2012–NM–122–AD; Amendment 

39–17741; AD 2014–03–04] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc. Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Bombardier, Inc. Model DHC–8–400 

series airplanes. This AD was prompted 

by a report of a translating door handle 

jamming during opening of an aft door. 

This AD requires replacing the handle 

shaft with a new single-piece machined 

handle shaft on the aft entry and service 

doors, and requires revising the 

maintenance program by incorporating a 

new airworthiness limitation task. We 

are issuing this AD to prevent a 

migrated pin from jamming a translating 

door handle, which could prevent 

opening of the door and impede an 

emergency evacuation. 

DATES: This AD becomes effective April 

9, 2014. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of April 9, 2014. 

ADDRESSES: You may examine the AD 

docket on the Internet at http://

www.regulations.gov/

#!docketDetail;D=FAA-2012-1226; 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 service information identified in 

this AD, contact Bombardier, Inc., QSeries 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 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: 

Cesar Gomez, Aerospace Engineer, 

Airframe and Mechanical Systems 

Branch, ANE–171, FAA, New York 

Aircraft Certification Office, 1600 

Stewart Avenue, Suite 410, Westbury, 

NY 11590; telephone (516) 228–7318; 

fax (516) 794–5531. 

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 Bombardier, Inc. Model 

DHC–8–400 series airplanes. The NPRM 

was published in the Federal Register 

on December 13, 2012 (77 FR 74126). 

The NPRM was prompted by a report of 

a translating door handle jamming 

during opening of an aft door. The 

NPRM proposed to require replacing the 

handle shaft with a new single-piece 

machined handle shaft on the aft entry 

and service doors, and requires revising 

the maintenance program by 

incorporating a new airworthiness 

limitation task. We are issuing this AD 

to prevent a migrated pin from jamming 

a translating door handle, which could 

prevent opening of the door and impede 

an emergency evacuation. 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued Canadian 

Airworthiness Directive CF–2012–17, 

dated May 24, 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 was one reported case of the 

translating door handle jamming on opening. 

It was found that the pin on the existing 

handle shaft could migrate and cause the 

translating door handle to jam. A jammed 

translating door handle could prevent the 

opening of the door and impede evacuation 

in the event of an emergency. 

This [Canadian] AD mandates the 

installation of the single piece machined 

handle shaft (ModSum 4–113687) on the aft 

entry door and the aft service door, as well 

as the incorporation of the new 

Airworthiness Limitation (AWL) tasks 

introduced as a result of this ModSum. 

You may examine the MCAI in the 

AD docket on the Internet at http://

www.regulations.gov/

#!documentDetail;D=FAA-2012-1226- 

0002. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. The 

following presents the comments 

received on the proposal (77 FR 74126, 

December 13, 2012) and the FAA’s 

response to each comment. 

Request for Optional Compliance 

Method 

Horizon Air requested that the NPRM 

(77 FR 74126, December 13, 2012) be 

revised to account for handle shafts that 

might have been replaced with the 

single-piece machined handle shaft 

through attrition. Horizon Air stated 

that the illustrated parts catalog 

identifies the single-piece handle shaft 

as an acceptable replacement part 

number, and that operators might have 

used that single-piece handle shaft as a 

replacement but without using the steps 

specified in Bombardier Service 

Bulletin 84–52–66, Revision A, dated 

October 24, 2011. 

We agree to revise this final rule. We 

have redesignated paragraph (i) of the 

NPRM (77 FR 74126, December 13, 

2012) as paragraph (i)(1) in this final 

rule and added paragraph (i)(2) to 

provide credit for installing single-piece 

machined handle shafts with certain 

part numbers by attrition (for example, 

replacing the handle shaft during 

maintenance actions) before the 

effective date of this final rule. 

Operators can provide a maintenance 

record of this action to show 

compliance with this final rule. 

Request To Clarify Compliance Time 

Horizon Air requested that the FAA 

state how the repetitive 25,000-flighthour interval specified in the tasks 

required by paragraph (h)(1) of the 

NPRM (77 FR 74126, December 13, 

2012) should be applied. Horizon Air 


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Federal Register / Vol. 79, No. 43 / Wednesday, March 5, 2014 / Rules and Regulations 12367 

asked if the 25,000-flight-hour interval 

applies to the flight hours accumulated 

by the airframe, or to the in-service time 

accumulated on the handle. 

We agree with the commenter’s 

request, and have revised paragraph 

(h)(1) of this final rule to clarify that the 

25,000-flight-hour compliance time for 

the repetitive inspection interval must 

be applied to the airplane service life, 

not to the handle service life. 

Request To Remove the Word ‘‘New’’ 

for the Replacement Handle 

Horizon Air requested that the word 

‘‘new’’ be removed from the description 

of the required replacement part in 

paragraph (g) of the NPRM (77 FR 

74126, December 13, 2012). Horizon Air 

states that, because Bombardier Service 

Bulletin 84–52–66, Revision A, dated 

October 24, 2011, uses the word ‘‘new’’ 

in the instructions for the handle shaft 

replacement, the use of the word ‘‘new’’ 

in the NPRM is unnecessary. 

We disagree. We describe the required 

actions from service information as 

accurately as possible and without 

ambiguity as to the required condition 

of any replacement parts. We have no 

information or data to determine that 

‘‘new or serviceable’’ would be more 

appropriate than ‘‘new,’’ as specified in 

Bombardier Service Bulletin 84–52–66, 

Revision A, dated October 24, 2011. 

However, under the provisions of 

paragraph (j)(1) of this final rule, 

operators may request approval to use a 

‘‘serviceable’’ handle if sufficient data 

are submitted to substantiate that the 

part would provide an acceptable level 

of safety. We have not changed this final 

rule in this regard. 

Conclusion 

We reviewed the relevant data, 

considered the comments received, 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 (77 FR 

74126, December 13, 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 74126, 

December 13, 2012). 

Costs of Compliance 

We estimate that this AD will affect 

78 products of U.S. registry. 

We also estimate that it will take 

about 8 work-hours 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 $10,596 per product. Where the 

service information lists required parts 

costs that are covered under warranty, 

we 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 

$879,528, or $11,276 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. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http://

www.regulations.gov/

#!docketDetail;D=FAA-2012-1226; 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 adding 

the following new AD: 

2014–03–04 Bombardier, Inc.: Amendment 

39–17741. Docket No. FAA–2012–1226; 

Directorate Identifier 2012–NM–122–AD. 

(a) Effective Date 

This airworthiness directive (AD) becomes 

effective April 9, 2014. 

(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 

4001, and 4003 through 4364 inclusive. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 52; Doors. 

(e) Reason 

This AD was prompted by a report of a 

translating door handle jamming during 

opening of an aft door. We are issuing this 

AD to prevent a migrated pin from jamming 

a translating door handle, which could 

prevent opening of the door and impede an 

emergency evacuation. 

(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 of the Single-Piece Machined 

Handle Shaft on the Aft Entry Door and the 

Aft Service Door 

Within 6,000 flight hours or 36 months, 

whichever occurs first, after the effective date 

of this AD, replace the handle shaft with a 

new single-piece machined handle shaft on 

the aft entry and service doors by 


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12368 Federal Register / Vol. 79, No. 43 / Wednesday, March 5, 2014 / Rules and Regulations 

incorporating Modification Summary 

(ModSum) 4–113687, in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 84–52–66, Revision A, dated 

October 24, 2011. 

(h) Revision of the Maintenance Program 

Schedule 

(1) Within 30 days after the effective date 

of this AD, revise the maintenance program 

by incorporating the information in 

maintenance Tasks 521200–105 and 524100– 

105 of Bombardier Temporary Revision (TR) 

ALI–122, dated November 4, 2011, into 

Section 1 Certification Maintenance 

Requirements of the Airworthiness 

Limitations Items (ALI) Part 2, Bombardier 

Q400 Dash 8 Maintenance Requirements 

Manual, PSM 1–84–7. The compliance time 

for doing the initial inspections of the handle 

shafts on the aft entry and service door is 

within 25,000 flight hours after installation of 

the new handle shaft specified in paragraph 

(g) of this AD. The flight hours specified in 

the tasks must be applied to the airplane 

service life, not to the handle service life. 

Thereafter, no alternative actions (e.g., 

inspections) or intervals may be used unless 

the actions or intervals are approved as an 

alternative method of compliance (AMOC) in 

accordance with the procedures specified in 

paragraph (j)(1) of this AD. 

(2) The maintenance program revision 

required by paragraph (h)(1) of this AD may 

be done by inserting a copy of Bombardier 

TR ALI–122, dated November 4, 2011, into 

Section 1 Certification Maintenance 

Requirements of the Airworthiness 

Limitations Items (ALI) Part 2, Bombardier 

Q400 Dash 8 Maintenance Requirements 

Manual, PSM 1–84–7. When this TR has been 

included in general revisions of the 

maintenance requirements manual, the 

general revisions may be inserted in the 

maintenance requirements manual and this 

TR removed. 

(i) Credit for Previous Actions 

(1) This paragraph provides credit for the 

actions required by paragraph (g) of this AD, 

if those actions were performed before the 

effective date of this AD using Bombardier 

Service Bulletin 84–52–66, dated July 25, 

2011, which is not incorporated by reference 

in this AD. 

(2) This paragraph provides credit for the 

actions required by paragraph (g) of this AD, 

if, through attrition, the handle shaft was 

replaced with a single-piece machined 

handle shaft having part number 85217916– 

115 or 85217916–116 before the effective 

date of this AD. 

(j) 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. 

(k) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) Canadian 

Airworthiness Directive CF–2012–17, dated 

May 24, 2012, for related information. This 

MCAI may be found in the AD docket on the 

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

#!documentDetail;D=FAA-2012-1226-0002. 

(2) Service information identified in this 

AD that is not incorporated by reference may 

be viewed at the addresses specified in 

paragraphs (l)(3) and (l)(4) of this AD. 

(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 the AD specifies otherwise. 

(i) Bombardier Service Bulletin 84–52–66, 

Revision A, dated October 24, 2011. 

(ii) Bombardier Temporary Revision ALI– 

122, dated November 4, 2011, to Section 1 

Certification Maintenance Requirements of 

the Airworthiness Limitations Items (ALI) 

Part 2, Bombardier Q400 Dash 8 Maintenance 

Requirements Manual, PSM 1–84–7. 

(3) 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. 

(4) 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. 

(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 January 

22, 2014. 

Jeffrey E. Duven, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2014–02516 Filed 3–4–14; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2013–0866; Directorate 

Identifier 2013–NM–131–AD; Amendment 

39–17743; AD 2014–03–06] 

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 all The 

Boeing Company Model 737–100, –200, 

–200C, –300, –400, and –500 series 

airplanes. This AD was prompted by 

reports of cracks found in the aft 

support fitting, the rear spar upper 

chord, and the rear spar web. This AD 

requires repetitive inspections for 

cracking of the aft support fitting for the 

main landing gear (MLG) beam, and the 

rear spar upper chord and rear spar web 

in the area of rear spar station (RSS) 

224.14; and repair if necessary. We are 

issuing this AD to detect and correct 

such cracks, which could grow and 

result in a fuel leak and possible fire. 

DATES: This AD is effective April 9, 

2014. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of April 9, 2014. 

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 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. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http://

www.regulations.gov by searching for 


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