Federal Register / Vol. 74, No. 69 / Monday, April 13, 2009 / Proposed Rules 16807 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2009–0331; Directorate 

Identifier 2008–NE–40–AD] 

RIN 2120–AA64 

Airworthiness Directives; Honeywell 

International Inc. TFE731 Series 

Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for 

Honeywell International Inc. TFE731 

series turbofan engines with certain 

second and third stage low-pressure 

compressor rotor (LPCR) discs installed. 

This proposed AD would require 

removing from service, certain second 

and third stage LPCR discs, part 

numbers (P/Ns) 3072396–1, 3072397–1, 

3075109–1, or 2075192–1. This 

proposed AD results from a report of 

cracks found during a fluorescent 

penetrant inspection (FPI) of the disc 

bore. We are proposing this AD to 

prevent an uncontained failure of a 

second and third stage LPCR disc due to 

cracks in the bore, which could result in 

damage to the airplane. 

DATES: We must receive any comments 

on this proposed AD by June 12, 2009. 

ADDRESSES: Use one of the following 

addresses to comment on this proposed 

AD. 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov and follow 

the instructions for sending your 

comments electronically. 

• Mail: Docket Management Facility, 

U.S. Department of Transportation, 1200 

New Jersey Avenue, SE., West Building 

Ground Floor, Room W12–140, 

Washington, DC 20590–0001. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

• Fax: (202) 493–2251. 

You can get the service information 

identified in this proposed AD from 

Honeywell Engines and Systems 

Technical Publications and Distribution, 

M/S 2101–201, P.O. Box 52170, 

Phoenix, AZ 85072–2170, telephone: 

Global Customer Care toll free (800) 

601–3099; International callers (602) 

365–3099. 

FOR FURTHER INFORMATION CONTACT: 

Joseph Costa, Aerospace Engineer, Los 

Angeles Aircraft Certification Office, 

FAA, Transport Airplane Directorate, 

3960 Paramount Blvd., Lakewood, CA 

90712–4137; e-mail: 

joseph.costa@faa.gov; telephone: (562) 

627–5246; fax: (562) 627–5210. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send us any written 

relevant data, views, or arguments 

regarding this proposal. Send your 

comments to an address listed under 

ADDRESSES. Include ‘‘Docket No. FAA– 

2009–0331; Directorate Identifier 2008– 

NE–40–AD’’ in the subject line of your 

comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of the proposed AD. We will 

consider all comments received by the 

closing date and may amend the 

proposed AD in light 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 with FAA 

personnel concerning this proposed AD. 

Using the search function of the Web 

site, anyone can find and read the 

comments in any of our dockets, 

including, if provided, the name of the 

individual who sent the comment (or 

signed the comment on behalf of an 

association, business, labor union, etc.). 

You may review the DOT’s complete 

Privacy Act Statement in the Federal 

Register published on April 11, 2000 

(65 FR 19477–78). 

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 the 

same as the Mail address provided in 

the ADDRESSES section. Comments will 

be available in the AD docket shortly 

after receipt. 

Discussion 

A routine FPI of a second stage LPCR 

disc, P/N 3072396–1, revealed three 

indications in the disc bore. The LPCR 

disc had accumulated 6,874 cyclessince-new (CSN). All three indications 

were determined to be cracks initiating 

from a titanium hard-alpha inclusion 

incurred during the alloy melting 

process. Oremet Corporation produced 

the heat lot, which was part of Heat No. 

WRT2053, in January 1982. We have 

determined that other second and third 

stage LPCR discs made from the same 

heat lot might also contain similar 

inclusions that could adversely affect 

the lives of those LPCR discs. Based on 

billet stacking and billet orientation, six 

discs were determined to be adjacent or 

near the cracked disc. We propose more 

expedient corrective action for these 

higher-risk discs than other LPCR discs 

made from the same heat lot. This 

condition, if not corrected, could result 

in an uncontained failure of a second 

and third stage LPCR disc due to cracks 

in the bore, which could result in 

damage to the airplane. 

Relevant Service Information 

We have reviewed and approved the 

technical contents of Honeywell 

International Inc. Alert Service Bulletins 

(ASBs) TFE731–72–A3748, dated 

August 21, 2008, and TFE731–72– 

A3749, dated August 21, 2008. Those 

ASBs describe procedures for removing 

certain second and third stage LPCR 

discs specified by serial number (SN) in 

the ASBs. 

Differences Between the Proposed AD 

and the Manufacturer’s Service 

Information 

Alert Service Bulletins TFE731–72– 

A3748, dated August 21, 2008, and 

TFE731–72–A3749, dated August 21, 

2008, require removing at the next 

access, second and third stage LPCR 

discs that have an SN specified in Table 

5 or Table 6 of those ASBs. This 

proposed AD would require removing 

those discs that have an SN specified in 

Table 5 within 100 cycles-in-service 

(CIS) after the effective date of the 

proposed AD or at the next access, 

whichever occurs first. This proposed 

AD would require removing those discs 

that have an SN specified in Table 6 

within 2,000 CIS after the effective date 

of the proposed AD or at the next 

access, whichever occurs first. 

FAA’s Determination and Requirements 

of the Proposed AD 

We have evaluated all pertinent 

information and identified an unsafe 

condition that is likely to exist or 

develop on other products of this same 

type design. We are proposing this AD, 

which would require removing from 

service engines with LPCR discs that 

have SN: 

• In Table 5 of ASBs TFE731–72– 

A3748, dated August 21, 2008, or 

TFE731–72–A3749, dated August 21, 

2008, within 100 CIS after the effective 

date of this proposed AD, and 

16808 Federal Register / Vol. 74, No. 69 / Monday, April 13, 2009 / Proposed Rules 

• In Table 6 of ASBs TFE731–72– 

A3748, dated August 21, 2008, or 

TFE731–72–A3749, dated August 21, 

2008, within 2,000 CIS or the next 

access after the effective date of this 

proposed AD, whichever occurs first. 

The proposed AD would require you 

to use the service information described 

previously to perform these actions. 

Costs of Compliance 

We estimate that this proposed AD 

would affect 27 engines installed on 

airplanes of U.S. registry. We also 

estimate that it would take about 4 

work-hours per engine to perform the 

proposed actions during scheduled 

maintenance and 140 work-hours per 

engine for the proposed actions during 

unscheduled maintenance. The average 

labor rate is $80 per work-hour. 

Required parts would cost about 

$31,000 per engine. Based on these 

figures, we estimate the total cost of the 

proposed AD to U.S. operators to be 

$900,000. 

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 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); and 

3. Would 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. You may get a copy 

of this summary at the address listed 

under ADDRESSES. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Proposed Amendment 

Under the authority delegated to me 

by the Administrator, the Federal 

Aviation Administration 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 airworthiness 

directive: 

Honeywell International Inc. (Formerly 

AlliedSignal Inc., formerly Garret 

Turbine Engine Company): Docket No. 

FAA–2009–0331; Directorate Identifier 

2008–NE–40–AD. 

Comments Due Date 

(a) The Federal Aviation 

Administration (FAA) must receive 

comments on this airworthiness 

directive (AD) action by June 12, 2009. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Honeywell 

International Inc. TFE731–2, TFE731– 

2A, TFE731–2C, TFE731–3, TFE731– 

3A, TFE731–3AR, TFE731–3B, TFE731– 

3BR, TFE731–3C, TFE731–3CR, 

TFE731–3D, TFE731–3DR, TFE731–3R, 

TFE731–4, TFE731–4R, TFE731–5, 

TFE731–5AR, TFE731–5BR, and 

TFE731–5R series turbofan engines with 

certain low-pressure compressor rotor 

(LPCR) discs, part number (P/Ns) 

3072396–1, 3072397–1, 3075190–1, or 

2075192–1, installed. These engines are 

installed on, but not limited to, the 

airplanes listed in Table 1 of this AD. 

TABLE 1—INSTALLED ON AIRPLANES BY MANUFACTURER

Manufacturer Model 

Dassault-Aviation or Dassault Aviation .................................................... Falcon 10 (Falcon 100) and Mystere-Falcon 20, 50, 900 and MF900 

series. 

Cessna Aircraft Company ........................................................................ Model 650, Citation III, VI, and VII. 

Gulfstream Aerospace LP ........................................................................ 1125 Westwind Astra. 

Israel Aircraft Industries ............................................................................ 1124 and 1124A (Westwind). 

Learjet Inc. ................................................................................................ 31, 31A, 35, 35A, 36, 36A, 55, 55B, 55C, and M31. 

Lockheed Martin Corporation (formerly Lockheed-Georgia) .................... 1329–23A, 1329–23D, 1329–23E, and 1329–25. 

Raytheon Corporate Jets (formerly British Aerospace and Hawker 

Beechcraft Corporation).

DH.125 Series 1A, 3A, and 3A/RA, HS.125 Series F3B and F3B/RA, 

BH.125 and DH.125 Series 400A, HS.125 Series 403B, F400B, and 

F403B, HS.125 Series 600A, BH.125 Series 600A, HS.125 Series 

F600B, 700A, and 700B, BAe.125 Series 800 and 1000, and Hawker 

800 and 850XP series. 

Unsafe Condition 

(d) This AD results from a report of 

cracks found during a fluorescent 

penetrant inspection (FPI) of the disc 

bore. We are issuing this AD to prevent 

an uncontained failure of a second and 

third stage LPCR disc due to cracks in 

the bore, which could result in damage 

to the airplane. 

Compliance 

(e) You are responsible for having the 

actions required by this AD performed 

within the compliance times specified 

unless the actions have already been 

done. 

Federal Register / Vol. 74, No. 69 / Monday, April 13, 2009 / Proposed Rules 16809 

Removing LPCR Discs from Service 

(f) For engines with a second and 

third stage LPCR disc that has a serial 

number (SN) listed in Table 5 of 

Honeywell International Inc. Alert 

Service Bulletins (ASBs) TFE731–72– 

A3748, dated August 21, 2008, or 

TFE731–72–A3749, dated August 21, 

2008, remove the second and third stage 

LPCR disc from service within 100 

cycles-in-service (CIS) after the effective 

date of this AD. 

(g) For engines with a second and 

third stage LPCR disc that has an SN 

listed in Table 6 of Honeywell 

International Inc. ASBs TFE731–72– 

A3748, dated August 21, 2008, or 

TFE731–72–A3749, dated August 21, 

2008, do the earlier of the following: 

(1) Remove the second and third stage 

LPCR disc from service within 2,000 CIS 

after the effective date of this AD, or 

(2) Remove the second and third stage 

LPCR disc from service the next time 

the intermediate case is removed from 

the LPC case. 

Installation Prohibition 

(h) After the effective date of this AD, 

don’t install any second and third stage 

LPCR disc removed as required in 

paragraphs (f) or (g) of this AD. 

Alternative Methods of Compliance 

(i) The Manager, Los Angeles Aircraft 

Certification Office, has the authority to 

approve alternative methods of 

compliance for this AD if requested 

using the procedures found in 14 CFR 

39.19. 

Related Information 

(j) Contact Joseph Costa, Aerospace 

Engineer, Los Angeles Aircraft 

Certification Office, FAA, Transport 

Airplane Directorate, 3960 Paramount 

Blvd., Lakewood, CA 90712–4137; email: joseph.costa@faa.gov; telephone: 

(562) 627–5246; fax: (562) 627–5210, for 

more information about this AD. 

(k) Honeywell International Inc. ASBs 

TFE731–72–A3748, dated August 21, 

2008, and TFE731–72–A3749, dated 

August 21, 2008, pertain to the subject 

of this AD. Contact Honeywell Engines 

and Systems Technical Publications and 

Distribution, M/S 2101–201, P.O. Box 

52170, Phoenix, AZ 85072–2170, 

telephone: Global Customer Care toll 

free (800) 601–3099; International 

callers (602) 365–3099, for a copy of this 

service information. 

Issued in Burlington, Massachusetts, on 

April 6, 2009. 

Peter A. White, 

Assistant Manager, Engine and Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. E9–8309 Filed 4–10–09; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2009–0330; Directorate 

Identifier 2008–NE–43–AD] 

RIN 2120–AA64 

Airworthiness Directives; Turbomeca 

S.A. ARRIUS 2F Turboshaft Engines 

AGENCY: Federal Aviation 

Administration (FAA), 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) 

issued 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: Rubs between the pipe and 

the bulkhead may lead to premature 

wearing and finally rupture of the P3 air 

pipe. The loss of P3 air pressure would 

then force the fuel control system to idle 

which could have a detrimental effect in 

critical phases of flight. We are 

proposing this AD to prevent an 

uncommanded power loss, which could 

result in an emergency autorotation 

landing or accident. 

DATES: We must receive comments on 

this proposed AD by May 13, 2009. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov and follow 

the instructions for sending your 

comments electronically. 

• Mail: Docket Management Facility, 

U.S. Department of Transportation, 1200 

New Jersey Avenue, SE., West Building 

Ground Floor, Room W12–140, 

Washington, DC 20590–0001. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

• Fax: (202) 493–2251. 

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 the 

same as the Mail address provided in 

the ADDRESSES section. Comments will 

be available in the AD docket shortly 

after receipt. 

FOR FURTHER INFORMATION CONTACT: 

James Lawrence, Aerospace Engineer, 

Engine Certification Office, FAA, Engine 

and Propeller Directorate, 12 New 

England Executive Park, Burlington, MA 

01803; e-mail: james.lawrence@faa.gov; 

telephone (781) 238–7176; fax (781) 

238–7199. 

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–2009–0330; Directorate Identifier 

2008–NE–43–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 with FAA 

personnel concerning this proposed AD. 

Using the search function of the Web 

site, anyone can find and read the 

comments in any of our dockets, 

including, if provided, the name of the 

individual who sent the comment (or 

signed the comment on behalf of an 

association, business, labor union, etc.). 

You may review the DOT’s complete 

Privacy Act Statement in the Federal 

Register published on April 11, 2000 

(65 FR 19477–78). 

Discussion 

The European Aviation Safety Agency 

(EASA), which is the Technical Agent 

for the Member States of the European 

Community, has issued EASA 

Airworthiness Directive 2008–0134R1, 

dated February 17, 2009, (referred to 

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

unsafe condition for the specified 

products. The MCAI states: