Federal Register / Vol. 75, No. 141 / Friday, July 23, 2010 / Proposed Rules 43095 

TABLE 2—SERVICE INFORMATION—Continued 

Viking Air Limited TR— To the— Dated— 

5–113 .................................................... Viking DHC–7 Dash 7 MM, PSM 1–7–2 ............................................................. December 15, 2008. 

Issued in Renton, Washington, on July 15, 

2010. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2010–18059 Filed 7–22–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0737; Directorate 

Identifier 2010–CE–037–AD] 

RIN 2120–AA64 

Airworthiness Directives; PIAGGIO 

AERO INDUSTRIES S.p.A. Model 

PIAGGIO P–180 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 the 

products listed above. 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: 

Some cases of failure of engine oil 

dipsticks, installed on Pratt & Whitney 

Canada (P&WC) PT6A66 and PT6A66B 

engines, were detected on P.180 aeroplanes; 

such failures, due to moisture penetration 

into the dipstick and subsequent corrosion, 

can cause incorrect reading of the engine oil 

low level on the Refuel/Ground Test Panel. 

If left uncorrected, this situation 

could lead to in-flight engine failure(s). 

The proposed AD would require actions 

that are intended to address the unsafe 

condition described in the MCAI. 

DATES: We must receive comments on 

this proposed AD by September 7, 2010. 

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. 

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: 

Sarjapur Nagarajan, Aerospace Engineer, 

FAA, Small Airplane Directorate, 901 

Locust, Room 301, Kansas City, 

Missouri 64106; telephone: (816) 329– 

4145; fax: (816) 329–4090. 

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–2010–0737; Directorate Identifier 

2010–CE–037–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 

The European Aviation Safety Agency 

(EASA), which is the Technical Agent 

for the Member States of the European 

Community, has issued AD No.: 2010– 

0123, dated June 22, 2010 (referred to 

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

unsafe condition for the specified 

products. The MCAI states: 

Some cases of failure of engine oil 

dipsticks, installed on Pratt & Whitney 

Canada (P&WC) PT6A66 and PT6A66B 

engines, were detected on P.180 aeroplanes; 

such failures, due to moisture penetration 

into the dipstick and subsequent corrosion, 

can cause incorrect reading of the engine oil 

low level on the Refuel/Ground Test Panel. 

If left uncorrected, this situation could lead 

to in-flight engine failure(s). 

This AD requires: 

(1) Repetitive visual checks of the engine 

oil levels to prevent an undetected low level 

condition; 

(2) repetitive inspections of the oil 

dipsticks to detect faulty units; 

(3) replacement of faulty oil dipsticks or 

visual checks of the oil level at reduced not 

to exceed intervals, until replacement of 

faulty units. 

The engine TC Holder is currently 

developing a modification that will address 

the unsafe condition identified in this AD; 

once such modification is developed, 

approved and available, further mandatory 

actions might be considered. 

This Correction is issued to amend the AD 

number heading: it was PAD, it is AD. 

Relevant Service Information 

PIAGGIO AERO INDUSTRIES S.p.A. 

has issued Service Bulletin (Mandatory) 

N.: 80–0287, Rev. N. 1, dated March 24, 

2010. 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. 

Differences Between This Proposed AD 

and the MCAI or Service Information 

We have reviewed the MCAI and 

related service information and, in 

WReier-Aviles on DSKGBLS3C1PROD with PROPOSALS

43096 Federal Register / Vol. 75, No. 141 / Friday, July 23, 2010 / Proposed Rules 

general, agree with their substance. But 

we might have found it necessary to use 

different words from those in the MCAI 

to ensure the AD is clear for U.S. 

operators and is enforceable. In making 

these changes, we do not intend to differ 

substantively from the information 

provided in the MCAI and related 

service information. 

We might also have proposed 

different actions in this AD from those 

in the MCAI in order to follow FAA 

policies. Any such differences are 

highlighted in a Note within the 

proposed AD. 

Costs of Compliance 

We estimate that this proposed AD 

will affect 99 products of U.S. registry. 

We also estimate that it would take 

about 2.5 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 $21,038, or $212.50 per 

product. 

In addition, we estimate that any 

necessary follow-on actions to replace 

both dipsticks would take about 1 workhour and require parts costing $9,000, 

for a cost of $9,085 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 

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); and 

3. 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: 

Piaggio Aero Industries S.p.A.: Docket No. 

FAA–2010–0737; Directorate Identifier 

2010–CE–037–AD. 

Comments Due Date 

(a) We must receive comments by 

September 7, 2010. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to PIAGGIO AERO 

INDUSTRIES S.p.A. Model PIAGGIO P–180 

airplanes, all serial numbers, certificated in 

any category. 

Subject 

(d) Air Transport Association of America 

(ATA) Code 79: Engine Oil. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

Some cases of failure of engine oil 

dipsticks, installed on Pratt & Whitney 

Canada (P&WC) PT6A66 and PT6A66B 

engines, were detected on P.180 aeroplanes; 

such failures, due to moisture penetration 

into the dipstick and subsequent corrosion, 

can cause incorrect reading of the engine oil 

low level on the Refuel/Ground Test Panel. 

If left uncorrected, this situation could lead 

to in-flight engine failure(s). 

This AD requires: 

(1) Repetitive visual checks of the engine 

oil levels to prevent an undetected low level 

condition; 

(2) repetitive inspections of the oil 

dipsticks to detect faulty units; 

(3) replacement of faulty oil dipsticks or 

visual checks of the oil level at reduced not 

to exceed intervals, until replacement of 

faulty units. 

The engine TC Holder is currently 

developing a modification that will address 

the unsafe condition identified in this AD; 

once such modification is developed, 

approved and available, further mandatory 

actions might be considered. 

This Correction is issued to amend the AD 

number heading: it was PAD, it is AD. 

Actions and Compliance 

(f) Unless already done, do the following 

actions: 

(1) Within one month after the effective 

date of this AD or within 25 hours time-inservice (TIS) after the effective date of this 

AD, whichever occurs first, and repetitively 

thereafter at intervals not to exceed one 

month or 25 hours TIS, whichever occurs 

first, do the following in both engines: 

(i) Visually check the oil level following 

the Accomplishment Instructions, Part A, of 

PIAGGIO AERO INDUSTRIES S.p.A. Service 

Bulletin (Mandatory) N.: 80–0287, Rev. N. 1, 

dated March 24, 2010; and 

(ii) Do a functional check and inspection 

of the dipstick following the 

Accomplishment Instructions, Part B and C, 

of PIAGGIO AERO INDUSTRIES S.p.A. 

Service Bulletin (Mandatory) N.: 80–0287, 

Rev. N. 1, dated March 24, 2010. 

(2) If, as determined by the inspection in 

paragraph (f)(1)(ii) of this AD, the installed 

dipsticks are compliant with P&WC Service 

Bulletin No. 14383, the repetitive inspections 

required in paragraph (f)(1) of this AD may 

be done at intervals not to exceed one month 

or 50 hours TIS, whichever occurs first. 

(3) If a failed dipstick is found during any 

functional check required in paragraph 

(f)(1)(ii) of this AD, do one of the following; 

(i) If a replacement dipstick is available, 

replace it before further flight; or 

(ii) If a replacement dipstick is not 

available, the failed dipstick may be 

reinstalled, but, until replacement, the oil 

level check specified in paragraph (f)(1)(i) of 

this AD must be repetitively done in the 

affected engine within 5 hours TIS from the 

last check. The repetitive oil level check 

interval may be extended to 10 hours TIS 

based on oil consumption in accordance with 

the Accomplishment Instructions, Part B, of 

PIAGGIO AERO INDUSTRIES S.p.A. Service 

Bulletin (Mandatory) N.: 80–0287, Rev. N. 1, 

dated March 24, 2010. 

(4) Replacement of the oil level dipstick 

does not terminate the repetitive check 

requirements of paragraph (f)(1) of this AD. 

FAA AD Differences 

Note: This AD differs from the MCAI 

and/or service information as follows: No 

differences. 

WReier-Aviles on DSKGBLS3C1PROD with PROPOSALS

Federal Register / Vol. 75, No. 141 / Friday, July 23, 2010 / Proposed Rules 43097 

Other FAA AD Provisions 

(g) The following provisions also apply to 

this AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, Standards Office, 

FAA, has the authority to approve AMOCs 

for this AD, if requested using the procedures 

found in 14 CFR 39.19. Send information to 

ATTN: Sarjapur Nagarajan, Aerospace 

Engineer, FAA, Small Airplane Directorate, 

901 Locust, Room 301, Kansas City, Missouri 

64106; telephone: (816) 329–4145; fax: (816) 

329–4090. Before using any approved AMOC 

on any airplane to which the AMOC applies, 

notify your appropriate principal inspector 

(PI) in the FAA Flight Standards District 

Office (FSDO), or lacking a PI, your local 

FSDO. 

(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. 

(3) Reporting Requirements: For any 

reporting requirement in this AD, under the 

provisions of the Paperwork Reduction Act 

(44 U.S.C. 3501 et seq.), the Office of 

Management and Budget (OMB) has 

approved the information collection 

requirements and has assigned OMB Control 

Number 2120–0056. 

Related Information 

(h) Refer to MCAI European Aviation 

Safety Agency (EASA) AD No.: 2010–0123, 

dated June 22, 2010; and PIAGGIO AERO 

INDUSTRIES S.p.A. Service Bulletin 

(Mandatory) N.: 80–0287, Rev. N. 1, dated 

March 24, 2010, for related information. 

Issued in Kansas City, Missouri, on July 16, 

2010. 

Kim Smith, 

Manager, Small Airplane Directorate, Aircraft 

Certification Service. 

[FR Doc. 2010–18061 Filed 7–22–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0698; Directorate 

Identifier 2009–NM–264–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Model 757 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to 

supersede an existing airworthiness 

directive (AD) that applies to all Model 

757 airplanes. The existing AD currently 

requires sealing the fasteners on the 

front and rear spars inside the left and 

right main fuel tanks and on the rear 

spar and lower panel of the center fuel 

tank. That AD also requires inspections 

of the wire bundle support installations 

to verify if certain clamps are installed 

and if Teflon sleeving covers the wire 

bundles inside the left and right 

equipment cooling system bays, on the 

left and right rear spars, and on the left 

and right front spars; and corrective 

actions if necessary. This proposed AD 

would also require sealing the 

additional fasteners on the rear spar 

inside the left and right main fuel tanks. 

This proposed AD results from a fuel 

system review conducted by the 

manufacturer. We have received reports 

from the manufacturer that additional 

fasteners in the main fuel tanks must be 

sealed for lightning strike protection. 

We are proposing this AD to detect and 

correct improper wire bundle support 

installation and sleeving and to prevent 

improperly sealed fasteners in the main 

and center fuel tanks from becoming an 

ignition source, in the event of a fault 

current or lightning strike, which could 

result in a fuel tank explosion and 

consequent loss of the airplane. 

DATES: We must receive comments on 

this proposed AD by September 7, 2010. 

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 Boeing 

Commercial Airplanes, Attention: Data 

& Services Management, P. O. Box 3707, 

MC 2H–65, Seattle, Washington 98124– 

2207; telephone 206–544–5000, 

extension 1; fax 206–766–5680; e-mail 

me.boecom@boeing.com; 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, Washington. 

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 

(telephone 800–647–5527) is in the 

ADDRESSES section. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: Tak 

Kobayashi, Aerospace Engineer, 

Propulsion Branch, ANM–140S, FAA, 

Seattle Aircraft Certification Office, 

1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone 

(425) 917–6499; fax (425) 917–6590. 

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–2010–0698; Directorate Identifier 

2009–NM–264–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 October 24, 2008, we issued AD 

2008–23–19, Amendment 39–15740 (73 

FR 71534, November 25, 2008), for all 

Model 757 series airplanes. That AD 

requires sealing the fasteners on the 

front and rear spars inside the left and 

right main fuel tanks and on the rear 

spar and lower panel of the center fuel 

tank. That AD also requires inspections 

of the wire bundle support installations 

to verify if certain clamps are installed 

and if Teflon sleeving covers the wire 

bundles inside the left and right 

equipment cooling system bays, on the 

left and right rear spars, and on the left 

and right front spars; and corrective 

actions if necessary. That AD resulted 

WReier-Aviles on DSKGBLS3C1PROD with PROPOSALS