Federal Register / Vol. 74, No. 67 / Thursday, April 9, 2009 / Rules and Regulations 16117 

Regulatory Findings 

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 

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. 

You can find our regulatory 

evaluation and the estimated costs of 

compliance in the AD Docket. 

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: 

2009–08–04 Hawker Beechcraft 

Corporation (Formerly Raytheon 

Aircraft Company): Amendment 39– 

15877. Docket No. FAA–2008–1240; 

Directorate Identifier 2008–NM–098–AD. 

Effective Date 

(a) This airworthiness directive (AD) is 

effective May 14, 2009. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Hawker Beechcraft 

Corporation Model BH.125 series 600A 

airplanes and Model HS.125 series 700A 

airplanes, certificated in any category; as 

identified in Hawker Beechcraft Mandatory 

Service Bulletin SB 24–3850, dated January 

2008, which have been modified in 

accordance with Supplemental Type 

Certificate SA2271SW. 

Unsafe Condition 

(d) This AD results from a report indicating 

that a blower motor of the cockpit ventilation 

and avionics cooling system seized up and 

gave off smoke. We are issuing this AD to 

prevent smoke and fumes in the cockpit in 

the event that a blower motor seizes and 

overheats due to excessive current draw. 

Compliance 

(e) Comply with this AD within the 

compliance times specified, unless already 

done. 

Inspection and Rework 

(f) Within 600 flight hours or 6 months 

after the effective date of this AD, whichever 

occurs first, inspect the wiring diagrams 

containing the cockpit blowers and compare 

with the current airplane configuration, in 

accordance with the Accomplishment 

Instructions of Hawker Beechcraft Mandatory 

Service Bulletin SB 24–3850, dated January 

2008; except as provided by paragraph (g) of 

this AD. 

(1) If the current airplane configuration 

does not match the applicable cockpit blower 

wiring diagrams, before further flight, rework 

the wiring using a method approved by the 

Manager, Special Certification Office, ASW– 

190, Rotorcraft Directorate, FAA. For the 

determination to be approved by the 

Manager, Special Certification Office, as 

required by this paragraph, the Manager’s 

approval letter must specifically refer to this 

AD. 

(2) If the current airplane configuration 

matches the applicable cockpit blower wiring 

diagrams, before further flight, rework the 

wiring in accordance with the 

Accomplishment Instructions of Hawker 

Beechcraft Mandatory Service Bulletin SB 

24–3850, dated January 2008. 

No Submission of Certain Information 

(g) Although Hawker Beechcraft Mandatory 

Service Bulletin SB 24–3850, dated January 

2008, specifies to submit certain information 

to the manufacturer, this AD does not 

include that requirement. 

Alternative Methods of Compliance 

(AMOCs) 

(h)(1) The Manager, Special Certification 

Office, ASW–190, Rotorcraft Directorate, 

FAA, Attn: Andy Shaw, Aerospace Engineer, 

Special Certification Office, ASW–190, FAA, 

Southwest Regional Office, 2601 Meacham 

Boulevard, Fort Worth, Texas 76137; 

telephone (817) 222–5188; fax (817) 222– 

5785; has the authority to approve AMOCs 

for this AD, if requested using the procedures 

found in 14 CFR 39.19. 

(2) To request a different method of 

compliance or a different compliance time 

for this AD, follow the procedures in 14 CFR 

39.19. 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. 

Material Incorporated by Reference 

(i) You must use Hawker Beechcraft 

Mandatory Service Bulletin SB 24–3850, 

dated January 2008, to do the actions 

required by this AD, unless the AD specifies 

otherwise. 

(1) For service information identified in 

this AD, contact Hawker Beechcraft 

Corporation, Department 62, P.O. Box 85, 

Wichita, Kansas 67201–0085; telephone 316– 

676–8238; fax 316–676–6706; e-mail 

tmdc@hawkerbeechcraft.com; Internet 

https://www.hawkerbeechcraft.com/ 

service_support/pubs. 

(2) You may review copies of the 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 or 425–227–1152. 

(3) You may also review copies of the 

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/ 

code_of_federal_regulations/ 

ibr_locations.html. 

Issued in Renton, Washington, on April 2, 

2009. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E9–8080 Filed 4–8–09; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2009–0329; Directorate 

Identifier 2009–CE–020–AD; Amendment 

39–15878; AD 2009–08–05] 

RIN 2120–AA64 

Airworthiness Directives; Liberty 

Aerospace Incorporated Model XL–2 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule; request for 

comments. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Liberty Aerospace Incorporated Model 

XL–2 airplanes. This AD requires you to 

repetitively inspect the exhaust muffler 

for cracks and to replace the exhaust 

muffler when cracks are found. This AD 

is the result of reports that cracks have 

been found in the exhaust muffler 

during maintenance and service 

inspections. We are issuing this AD to 

detect and correct cracks in the exhaust 

muffler, which could result in carbon 

monoxide entering the cabin through 

the heating system. Carbon monoxide 

entering into the airplane cabin could 

lead to incapacitation of the pilot. 

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16118 Federal Register / Vol. 74, No. 67 / Thursday, April 9, 2009 / Rules and Regulations 

DATES: This AD becomes effective on 

April 20, 2009. 

On April 20, 2009, the Director of the 

Federal Register approved the 

incorporation by reference of certain 

publications listed in this AD. 

We must receive any comments on 

this AD by June 8, 2009. 

ADDRESSES: Use one of the following 

addresses to comment on this AD. 

• 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. 

To get the service information 

identified in this AD, contact Liberty 

Aerospace, 100 Aerospace Drive, 

Melbourne, Florida 32901; telephone: 

(321) 752–0332 or (800) 759–5953; fax: 

(321) 752–0377; Internet: http:// 

www.libertyaircraft.com. 

To view the comments to this AD, go 

to http://www.regulations.gov. The 

docket number is FAA–2009–0329; 

Directorate Identifier 2009–CE–020–AD. 

FOR FURTHER INFORMATION CONTACT: 

—Corey Spiegel, Aerospace Engineer, 

Atlanta Aircraft Certification Office, 

One Crown Center, 1895 Phoenix 

Blvd., Suite 450, Atlanta, Georgia 

30349; telephone: (770) 703–6045; 

facsimile: (770) 703–6097; e-mail: 

corey.spiegel@faa.gov; or 

—Cindy Lorenzen, Aerospace Engineer, 

Atlanta Aircraft Certification Office, 

One Crown Center, 1895 Phoenix 

Blvd., Suite 450, Atlanta, Georgia 

30349; telephone: (770) 703–6078; 

facsimile: (770) 703–6097; e-mail: 

cindy.lorenzen@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We received reports of cracks found 

in the exhaust mufflers of Liberty 

Aerospace Incorporated (Liberty 

Aerospace) Model XL–2 airplanes. One 

crack was found during maintenance, 

which prompted Liberty Aerospace to 

publish service information requesting 

the exhaust mufflers be inspected for 

cracks on all Model XL–2 airplanes. 

Seven additional cracks have been 

found during these service inspections. 

Investigation is ongoing to determine 

what is causing the exhaust mufflers to 

crack. Excessive vibration caused by 

improper propeller clocking position 

may be a contributing factor. 

This condition, if not corrected, could 

result in carbon monoxide entering the 

cabin through the heating system and 

cause incapacitation of the pilot. 

Relevant Service Information 

We reviewed Liberty Aerospace, Inc. 

Service Document Critical Service 

Bulletin (CSB) CSB–09–001, Revision 

Level B, Revised on March 18, 2009. 

The service information describes 

procedures for inspecting the exhaust 

muffler for cracks and replacing the 

exhaust muffler when cracks are found. 

FAA’s Determination and Requirements 

of This AD 

We are issuing this AD because we 

evaluated all the information and 

determined the unsafe condition 

described previously is likely to exist or 

develop on other products of the same 

type design. This AD requires 

repetitively inspecting the exhaust 

muffler for cracks and replacing the 

exhaust muffler when cracks are found. 

This AD also requires inspecting the 

propeller for proper clocking position 

and correcting any discrepancies found. 

Liberty Aerospace is reviewing the 

information related to the occurrences 

referenced in this AD and may develop 

a modification that, when incorporated, 

would eliminate the need for the 

repetitive inspections required by this 

AD. The FAA will review any 

modification that is developed, 

determine whether it would eliminate 

the need for the requirements of this 

action, and then determine whether 

additional AD action is necessary. 

FAA’s Determination of the Effective 

Date 

An unsafe condition exists that 

requires the immediate adoption of this 

AD. The FAA has found that the risk to 

the flying public justifies waiving notice 

and comment prior to adoption of this 

rule because cracks in the exhaust 

muffler could result in carbon monoxide 

entering the cabin through the heating 

system. Carbon monoxide entering into 

the airplane cabin could lead to 

incapacitation of the pilot. Therefore, 

we determined that notice and 

opportunity for public comment before 

issuing this AD are impracticable and 

that good cause exists for making this 

amendment effective in fewer than 30 

days. 

Comments Invited 

This AD is a final rule that involves 

requirements affecting flight safety, and 

we did not precede it by notice and an 

opportunity for public comment. We 

invite you to send any written relevant 

data, views, or arguments regarding this 

AD. Send your comments to an address 

listed under the ADDRESSES section. 

Include the docket number ‘‘FAA– 

2009–0329; Directorate Identifier 2009– 

CE–020–AD’’ at the beginning of your 

comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of the AD. We will consider all 

comments received by the closing date 

and may amend the 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 we receive 

concerning this AD. 

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 

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 

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Federal Register / Vol. 74, No. 67 / Thursday, April 9, 2009 / Rules and Regulations 16119 

under the criteria of the Regulatory 

Flexibility Act. 

We prepared a regulatory evaluation 

of the estimated costs to comply with 

this AD and placed it in the AD docket. 

Examining the AD Docket 

You may examine the AD docket that 

contains the AD, the regulatory 

evaluation, any comments received, and 

other information 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 Docket Office (telephone (800) 647– 

5527) is located at the street address 

stated in the ADDRESSES section. 

Comments will be available in the AD 

docket shortly after receipt. 

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 airworthiness 

directive (AD): 

2009–08–05 Liberty Aerospace 

Incorporated: Amendment 39–15878; 

Docket No. FAA–2009–0329; Directorate 

Identifier 2009–CE–020–AD. 

Effective Date 

(a) This AD becomes effective on April 20, 

2009. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Model XL–2 

airplanes, serial numbers 0007, 0009, and 

subsequent, that are certificated in any 

category. 

Unsafe Condition 

(d) This AD is the result of reports that 

eight cracks have been found in the exhaust 

muffler during maintenance and service 

inspections. We are issuing this AD to detect 

and correct cracks in the exhaust muffler, 

which could result in carbon monoxide 

entering the cabin heating system. This 

condition could lead to incapacitation of the 

pilot. 

Compliance 

(e) To address this problem, you must do 

the following, unless already done: 

Actions Compliance Procedures 

(1) Inspect the following: 

(i) The exhaust muffler for cracks. There 

are two different exhaust systems available for the affected airplanes. They are: 

(A) Standard exhaust system, part 

number (P/N) DEL200201–002 that 

incorporates muffler P/N 

DEL200201–101; and 

(B) Reduced sound exhaust system, 

P/N DEL200201–003 that incorporates muffler P/N 200201–104. 

Initially inspect within the next 10 hours timein-service (TIS) after April 20, 2009 (the effective date of this AD) or at the next annual inspection, whichever occurs first. Repetitively inspect the exhaust muffler thereafter as specified in paragraph (e)(5) of this 

AD. 

Follow Liberty Aerospace, Inc. Service Document Critical Service Bulletin (CSB) CSB– 

09–001, Revision Level B, Revised on 

March 18, 2009. 

(ii) The tail pipe and the tail pipe opening 

in the lower cowl for a 0.5-inch minimum 

clearance. 

(iii) Inspect the propeller for proper propeller clocking position. 

(2) As a result of the inspections required in 

paragraphs (e)(1)(ii) and (e)(1)(iii) of this AD: 

(i) If the clearance between the tail pipe 

and the tail pipe opening is less than the 

required 0.5-inch minimum, trim the 

lower cowl as needed to achieve the 

minimum clearance. 

Before further flight after the inspection required in paragraph (e)(1) of this AD. As specified in Liberty Aerospace, Inc. Service Document Critical Service Bulletin 

(CSB) CSB–09–001, Revision Level B, Revised on March 18, 2009. 

(ii) If there is a discrepancy in the propeller 

clocking position, remove and reinstall 

the propeller at the correct position. 

(3) As a result of the initial inspection required 

in paragraph (e)(1)(i) of this AD or any repetitive inspection required in paragraph (e)(5) 

of this AD, if a crack is found, replace the exhaust muffler. 

(i) The manufacturer will provide the replacement exhaust system. 

Before further flight after the initial inspection 

required in paragraph (e)(1) of this AD and 

before further flight after any repetitive inspection required in paragraph (e)(5) of this 

AD. 

Follow Liberty Aerospace, Inc. Service Document Critical Service Bulletin (CSB) CSB– 

09–001, Revision Level B, Revised on 

March 18, 2009. 

(ii) A reduced sound exhaust system may 

be replaced with a standard exhaust system. 

(iii) Installing a reduced sound exhaust system as a replacement part also requires 

installing a bypass SCAT tube and a ‘‘Do 

Not Use’’ placard on or near the heater 

knob. 

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16120 Federal Register / Vol. 74, No. 67 / Thursday, April 9, 2009 / Rules and Regulations 

Actions Compliance Procedures 

(4) If the airplane is equipped with a reduced 

sound exhaust system and no cracks are 

found during the initial inspection required in 

paragraph (e)(1) of this AD, install a bypass 

SCAT tube and a ‘‘Do Not Use’’ placard on 

or near the heater knob. 

Within the next 10 hours TIS after April 20, 

2009 (the effective date of this AD. 

Follow Liberty Aerospace, Inc. Service Document Critical Service Bulletin (CSB) CSB– 

09–001, Revision Level B, Revised on 

March 18, 2009. 

(5) If no cracks are found in the exhaust muffler 

during the initial inspection required in paragraph (e)(1) of this AD or if the exhaust muffler was replaced as required in paragraph 

(e)(3) of this AD, repetitively inspect thereafter at the intervals specified in paragraphs 

(e)(5)(i), (e)(5)(ii), and (e)(5)(iii) of this AD. 

(i) For airplanes equipped with a standard exhaust system and the optional bypass 

SCAT tube has not been installed, repetitively inspect thereafter every 25 hours TIS 

or every 12 months, whichever occurs first. 

(ii) For airplanes equipped with a standard exhaust system and the optional bypass 

SCAT tube has been installed, repetitively 

inspect thereafter every 50 hours TIS or 

every 12 months, whichever occurs first. 

Follow Liberty Aerospace, Inc. Service Document Critical Service Bulletin (CSB) CSB– 

09–001, Revision Level B, Revised on 

March 18, 2009. 

(iii) For airplanes equipped with a reduced 

sound exhaust system and the required bypass SCAT tube has been installed, repetitively inspect thereafter every 50 hours TIS 

or every 12 months, whichever occurs first. 

(6) Report the results of the following inspections required in this AD to the FAA. 

(i) Initial inspection required in paragraph 

(e)(1) of this AD. 

(ii) Repetitive inspections required in paragraph (e)(5) of this AD only if cracks are 

found. 

Within 10 days after each inspection required 

by this AD. 

Use the form (Figure 1 of this AD) and submit 

it to FAA, Atlanta Aircraft Certification Office, One Crown Center, 1895 Phoenix 

Blvd., Suite 450, Atlanta, Georgia 30349. 

(iii) The Office of Management and Budget 

(OMB) approved the information collection requirements contained in this regulation under the provisions of the Paperwork Reduction Act of 1980 (44 U.S.C. 

3501 et seq.) and assigned OMB Control 

Number 2120–0056. 

AD 2009–08–05 Inspection Report 

Airplane Serial Number 

Airplane Tach Hours at time of inspection 

Propeller type (circle one) MT Sensenich 

Propeller Tach Hours at time of inspection 

Exhaust Type (circle one) Standard Reduced Sound 

Is Exhaust Cracked? (circle one) Yes No 

Did lower cowl require trimming at the tail pipe opening? (circle one) 

Not applicable after initial inspection. 

Yes No 

Did the propeller clocking position need to be corrected? (circle one) 

Not applicable after initial inspection. 

Yes No 

Were any other discrepencies noticed during the inspection? 

Name: 

Telephone and/or e-mail address: 

Date: 

Send report to: Corey Spiegel, Aerospace Engineer, Atlanta ACO, 

One Crown Center, 1895 Phoenix Blvd., Suite 450, Atlanta Georgia 30349; 

facsimile: (770) 703–6097; email: corey.spiegel@faa.gov. 

Figure 1 

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Federal Register / Vol. 74, No. 67 / Thursday, April 9, 2009 / Rules and Regulations 16121 

Special Flight Permit 

(f) Under 14 CFR part 39.23, we are 

limiting the special flight permits for this AD 

by the following conditions: 

(1) The cabin heat turned off; and 

(2) The fresh air vents are open. 

Alternative Methods of Compliance 

(AMOCs) 

(g) The Manager, Atlanta Aircraft 

Certification Office (ACO), FAA, has the 

authority to approve AMOCs for this AD, if 

requested using the procedures found in 14 

CFR 39.19. Send information to ATTN: Corey 

Spiegel, Aerospace Engineer, Atlanta ACO, 

One Crown Center, 1895 Phoenix Blvd., Suite 

450, Atlanta, Georgia 30349. 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. 

Material Incorporated by Reference 

(h) You must use Liberty Aerospace, Inc. 

Service Document Critical Service Bulletin 

(CSB) CSB–09–001, Revision Level B, 

Revised on March 18, 2009, to do the actions 

required by this AD, unless the AD specifies 

otherwise. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

this service information under 5 U.S.C. 

552(a) and 1 CFR part 51. 

(2) For service information identified in 

this AD, contact Liberty Aerospace, 100 

Aerospace Drive, Melbourne, Florida 32901; 

telephone: (321) 752–0332 or (800) 759–5953; 

fax: (321) 752–0377; Internet: http:// 

www.libertyaircraft.com. 

(3) You may review copies of the service 

information incorporated by reference for 

this AD at the FAA, Central Region, Office of 

the Regional Counsel, 901 Locust, Kansas 

City, Missouri 64106. For information on the 

availability of this material at the Central 

Region, call (816) 329–3768. 

(4) You may also review copies of the 

service information incorporated by reference 

for this AD 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/ 

code_of_federal_regulations/ 

ibr_locations.html. 

Issued in Kansas City, MO, on April 3, 

2009. 

John R. Colomy, 

Acting Manager, Small Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E9–8075 Filed 4–8–09; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2008–0899; Directorate 

Identifier 2008–NM–022–AD; Amendment 

39–15874; AD 2009–08–01] 

RIN 2120–AA64 

Airworthiness Directives; Honeywell 

Flight Management Systems (FMSs) 

Equipped With Honeywell NZ–2000 

Navigation Computers and Honeywell 

IC–800 or IC–800E Integrated Avionics 

Computers; as Installed on Various 

Transport Category Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: The FAA is superseding an 

existing airworthiness directive (AD), 

which applies to all Honeywell FMSs 

served by Honeywell NZ–2000 

navigation computers and IC–800 

integrated avionics computers. That AD 

currently requires identifying affected 

computers by part number and software 

modification level and revising the 

Limitations section of applicable 

airplane flight manuals to provide 

procedures for retaining optimum 

position determination and intended 

navigation. This new AD requires 

upgrading new software, which 

terminates the existing requirements. 

This AD results from reports of in-flight 

unannunciated shifts of computed 

position in airplanes with the subject 

FMS computers. We are issuing this AD 

to prevent a shift in the FMS computed 

position, which could result in 

uncommanded deviations from the 

intended flight path of the airplane, and, 

if those deviations are undetected by the 

flight crew, compromised terrain/traffic 

avoidance. 

DATES: This AD becomes effective May 

14, 2009. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in the AD 

as of May 14, 2009. 

On April 18, 2007 (72 FR 15818, April 

3, 2007), the Director of the Federal 

Register approved the incorporation by 

reference of Honeywell Technical 

Newsletter A23–6111–008, Revision 

001, dated February 22, 2007. 

ADDRESSES: For service information 

identified in this AD, contact Honeywell 

Technical Operations Center, 1944 East 

Sky Harbor Circle, Phoenix, Arizona 

85034–3442; telephone (U.S. and 

Canada) 800–601–3099, (international) 

602–365–3099; e-mail 

AeroTechSupport@Honeywell.com; 

Internet http://www.honeywell.com. 

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 AD, the regulatory 

evaluation, any comments received, and 

other information. The address for the 

Docket Office (telephone 800–647–5527) 

is the Document Management Facility, 

U.S. Department of Transportation, 

Docket Operations, M–30, West 

Building Ground Floor, Room W12–140, 

1200 New Jersey Avenue, SE., 

Washington, DC 20590. 

FOR FURTHER INFORMATION CONTACT: 

Daniel Bui, Aerospace Engineer, 

Systems and Equipment Branch, ANM– 

130L, FAA, Los Angeles Aircraft 

Certification Office, 3960 Paramount 

Boulevard, Lakewood, California 

90712–4137; telephone (562) 627–5339; 

fax (562) 627–5210. 

SUPPLEMENTARY INFORMATION: 

Discussion 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an AD that 

supersedes AD 2007–07–12, amendment 

39–15009 (72 FR 15818, April 3, 2007). 

The existing AD applies to all 

Honeywell FMSs served by Honeywell 

NZ–2000 navigation computers and IC– 

800 integrated avionics computers. That 

NPRM was published in the Federal 

Register on August 21, 2008 (73 FR 

49368). That NPRM proposed to retain 

the existing requirements of identifying 

affected airplanes by part numbers/ 

modification levels and revising the 

Limitations section of the airplane flight 

manual. That NPRM also proposed to 

require uploading new software, which 

would terminate the existing 

requirements. 

Actions Since NPRM Was Issued 

Since we issued the NPRM, 

Honeywell has published Alert Service 

Bulletin 7017300–22–A6112, Revision 

001, dated February 7, 2008. In the 

NPRM, we referred to Honeywell Alert 

Service Bulletin 7017300–22–A6112, 

dated June 22, 2007, as the appropriate 

source of service information for 

accomplishing the proposed actions. 

The procedures in Revision 001 of this 

service bulletin are essentially the same 

as those in the original issue of this 

service bulletin. Revision 001 of this 

service bulletin includes instructions to 

load software onboard as an alternative 

mstockstill on PROD1PC66 with RULES