15820 Federal Register / Vol. 72, No. 63 / Tuesday, April 3, 2007 / Rules and Regulations 

TABLE 1.—KNOWN AFFECTED AIRPLANES—Continued 

Manufacturer Model 

Raytheon Aircraft Company ..................................................................... BAe.125 Series 800A (including C–29A and U–125) airplanes. 

Hawker 800XP and 1000 airplanes. 

Unsafe Condition 

(d) This AD results from reports of in-flight 

unannunciated shifts of computed position 

in airplanes with the subject flight 

management system (FMS) computers 

identified in paragraph (c) of this AD. 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. 

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. 

Identification of Part Number/Modification 

Level 

(f) Within 14 days after the effective date 

of this AD: Determine if the installed NZ–

2000 navigation computers and IC–800 

integrated avionics computers serving FMSs 

have computer part numbers and software 

modification levels identified in Honeywell 

Technical Newsletter A23–6111–008, 

Revision 001, dated February 22, 2007. For 

purposes of this AD, airplanes with FMS 

computers having a part number and 

software modification level identified in the 

newsletter are ‘‘affected airplanes.’’

Revision of Airplane Flight Manual (AFM) 

(g) For any affected airplane: Within 14 

days after the effective date of this AD, revise 

the Limitations section of the applicable 

AFM to incorporate the information included 

in Appendix A of Honeywell Technical 

Newsletter A23–6111–008, Revision 001, 

dated February 22, 2007. This may be done 

by inserting a copy of Appendix A of the 

newsletter into the AFM. 

Alternative Methods of Compliance 

(AMOCs) 

(h)(1) The Manager, Los Angeles Aircraft 

Certification Office (ACO), FAA, has the 

authority to approve AMOCs for this AD, if 

requested in accordance with 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 Honeywell Technical 

Newsletter A23–6111–008, Revision 001, 

dated February 22, 2007, to perform the 

actions that are required by this AD, unless 

the AD specifies otherwise. The Director of 

the Federal Register approved the 

incorporation by reference of this document 

in accordance with 5 U.S.C. 552(a) and 1 CFR 

part 51. Contact Honeywell, P.O. Box 21111, 

Phoenix, AZ 85036–1111, for a copy of this 

service information. You may review copies 

at the FAA, Transport Airplane Directorate, 

1601 Lind Avenue, SW., Renton, 

Washington; or 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/ibr-locations.html. 

Issued in Renton, Washington, on March 

23, 2007. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E7–5896 Filed 4–2–07; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2007–27736; Directorate 

Identifier 2007–NM–001–AD; Amendment 

39–15010; AD 2007–07–05] 

RIN 2120–AA64 

Airworthiness Directives; Boeing 

Model 777 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule; request for 

comments. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for all 

Boeing Model 777 airplanes. This AD 

requires a one-time inspection to 

determine the part number of the left 

and right air supply and cabin pressure 

controllers (ASCPCs) and installation of 

new ASCPC software if necessary. This 

AD results from a report of an ASCPC 

failure during flight. We are issuing this 

AD to prevent an ASCPC failure that 

could stop airflow into the airplane, 

inhibit the cabin altitude warning 

message, and cause an incorrect display 

of cabin altitude. These failures could 

result in depressurization of the 

airplane without warning. 

DATES: This AD becomes effective April 

18, 2007. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in the AD 

as of April 18, 2007. 

We must receive comments on this 

AD by June 4, 2007. 

ADDRESSES: Use one of the following 

addresses to submit comments on this 

AD. 

• DOT Docket Web site: Go to 

http://dms.dot.gov and follow the 

instructions for sending your comments 

electronically. 

• Government-wide rulemaking Web 

site: Go to http://www.regulations.gov 

and follow the instructions for sending 

your comments electronically. 

• Mail: Docket Management Facility; 

U.S. Department of Transportation, 400 

Seventh Street SW., Nassif Building, 

room PL–401, Washington, DC 20590. 

• Fax: (202) 493–2251. 

• Hand Delivery: Room PL–401 on 

the plaza level of the Nassif Building, 

400 Seventh Street SW., Washington, 

DC, between 9:00 a.m. and 5:00 p.m., 

Monday through Friday, except Federal 

holidays. 

Contact Boeing Commercial 

Airplanes, P.O. Box 3707, Seattle, 

Washington 98124–2207, for service 

information identified in this AD. 

FOR FURTHER INFORMATION CONTACT: 

David Webber, Aerospace Engineer, 

Cabin Safety and Environmental 

Systems Branch, ANM–150S, FAA, 

Seattle Aircraft Certification Office, 

1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone 

(425) 917–6451; fax (425) 917–6590. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We have received a report indicating 

that the left air supply and cabin 

pressure controller (ASCPC) incorrectly 

shut off the right air conditioning pack 

and the left bleed, and erratically 

opened and closed the isolation valves, 

on a Model 777 airplane during flight. 

This resulted in periods of loss of 

conditioned inflow to the cabin and 

flight deck. The flightcrew descended 

the airplane to 10,000 feet and returned 

to the airport. Investigation into this 

event revealed that the actions of the 

ASCPC resulted from a solder defect in 

the Aeronautical Radio, Inc. (ARINC) 

629 hardware that occurred during 

manufacturing. The manufacturing error 


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Federal Register / Vol. 72, No. 63 / Tuesday, April 3, 2007 / Rules and Regulations 15821 

was determined to be an isolated event. 

However, subsequent analysis revealed 

a software deficiency within the ASCPC 

that would not detect this single point 

failure. This defect caused an 

intermittent open to ARINC 629 builtin-test (BIT) 13 for all input words. This, 

in turn, caused the ASCPC to enter the 

auxiliary power unit-to-pack takeoff 

(APT) mode above 30,000 feet. The 

ASCPC internal BIT did not detect the 

defect and allowed the ASCPC to 

continue to operate. This condition, if 

not corrected, could stop airflow into 

the airplane, inhibit the cabin altitude 

warning message, and cause an 

incorrect display of cabin altitude. 

These failures could result in 

depressurization of the airplane without 

warning. 

Relevant Service Information 

We have reviewed Boeing Service 

Bulletin 777–36A0026, Revision 1, 

dated February 8, 2007. The service 

bulletin describes procedures for 

installing new ASCPC operational 

program software (OPS) to prevent the 

failures caused by the solder defect. The 

software also includes updates that are 

not related to the defect. 

The replacement software is different 

from the existing software as follows: 

• APT logic is revised to improve 

fault tolerance. 

• ARINC 629 integrity tests are 

added. 

• Composite critical fault counter 

(CCFC) is revised to be reset to zero 

upon determination that no validated 

critical faults have occurred within the 

last one hour. 

• List of parameters that are stored in 

the compact flash disk are updated. 

• ARINC 429 wraparound BIT logic is 

revised to correct a fault isolation error. 

• Core software for the central 

processing module (CPM) of the 

modular digital controller (MDC) is 

revised to initialize an un-initiated 

variable that could result in nuisance 

ASCPC faults. 

Accomplishing the actions specified 

in the service information is intended to 

adequately address the unsafe 

condition. 

FAA’s Determination and Requirements 

of This AD 

The unsafe condition described 

previously is likely to exist or develop 

on other airplanes of the same type 

design. For this reason, we are issuing 

this AD to prevent an ASCPC failure 

that could stop airflow into the airplane, 

inhibit the cabin altitude warning 

message, and cause an incorrect display 

of cabin altitude. These failures could 

result in depressurization of the 

airplane without warning. This AD 

requires a one-time inspection to 

determine the part number of the left 

and right ASCPCs and installation of 

new ASCPC software if necessary. 

FAA’s Determination of the Effective 

Date 

Since an unsafe condition exists that 

requires the immediate adoption of this 

AD, we have found that notice and 

opportunity for public comment before 

issuing this AD are impracticable, and 

that good cause exists to make this AD 

effective in less than 30 days. 

Comments Invited 

This AD is a final rule that involves 

requirements that affect flight safety and 

was not preceded by notice and an 

opportunity for public comment; 

however, we invite you to submit any 

relevant written data, views, or 

arguments regarding this AD. Send your 

comments to an address listed in the 

ADDRESSES section. Include ‘‘Docket No. 

FAA–2007–27736; Directorate Identifier 

2007–NM–001–AD’’ at the beginning of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of the AD that might suggest a 

need to modify it. 

We will post all comments we 

receive, without change, to http:// 

dms.dot.gov, including any personal 

information you provide. We will also 

post a report summarizing each 

substantive verbal contact with FAA 

personnel concerning this AD. Using the 

search function of that web site, anyone 

can find and read the comments in any 

of our dockets, including 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), or you may visit 

http://dms.dot.gov. 

Examining the Docket 

You may examine the AD docket on 

the Internet at http://dms.dot.gov, or in 

person at the Docket Management 

Facility office between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. The Docket 

Management Facility office (telephone 

(800) 647–5227) is located on the plaza 

level of the Nassif Building at the DOT 

street address stated in the ADDRESSES

section. Comments will be available in 

the AD docket shortly after the Docket 

Management System receives them. 

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 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 the 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 AD and placed it in the AD docket. 

See the ADDRESSES section for a location 

to examine the regulatory evaluation. 

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: 


rwilkins on PROD1PC63 with RULES
15822 Federal Register / Vol. 72, No. 63 / Tuesday, April 3, 2007 / Rules and Regulations 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

■ 2. The Federal Aviation 

Administration (FAA) amends § 39.13 

by adding the following new 

airworthiness directive (AD): 

2007–07–05 Boeing: Amendment 39–15010. 

Docket No. FAA–2007–27736; 

Directorate Identifier 2007–NM–001–AD. 

Effective Date 

(a) This AD becomes effective April 18, 

2007. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to all Boeing Model 

777–200, –200LR, –300, and –300ER series 

airplanes, certificated in any category. 

Unsafe Condition 

(d) This AD results from a report of an air 

supply and cabin pressure controller 

(ASCPC) failure during flight. We are issuing 

this AD to prevent an ASCPC failure that 

could stop airflow into the airplane, inhibit 

the cabin altitude warning message, and 

cause an incorrect display of cabin altitude. 

These failures could result in 

depressurization of the airplane without 

warning. 

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. 

Inspection To Determine Part Number (P/N) 

of the ASCPCs 

(f) For all airplanes: Within 90 days after 

the effective date of this AD, perform an 

inspection of the left and right ASCPCs to 

determine the part number. 

ASCPC Software Installation 

(g) For airplanes on which any ASCPC 

having P/N 1152972–4 is found during the 

inspection required by paragraph (f) of this 

AD: Within 90 days after the effective date 

of this AD, install new ASCPC operational 

program software (OPS) in accordance with 

the Accomplishment Instructions of Boeing 

Service Bulletin 777–36A0026, Revision 1, 

dated February 8, 2007. 

Installation of Certain OPS Software 

Prohibited 

(h) As of the effective date of this AD, 

installation of OPS P/N 3673–GRS–101–00, 

P/N 3670–GRS–102–00, or P/N 3671–GRS–

103–00 is prohibited. 

(i) As of the effective date of this AD, no 

person may install an ASCPC, P/N 

111152972–4, on any airplane, unless it has 

had ASCPC OPS P/N 3676–GRS–104–00 

installed in accordance with paragraph (g) of 

this AD. 

Credit for Actions Done Using Previous 

Service Information 

(j) Actions accomplished before the 

effective date of this AD in accordance with 

Boeing Alert Service Bulletin 777–36A0026, 

dated December 19, 2006, are considered 

acceptable for compliance with the 

corresponding actions specified in this AD. 

Alternative Methods of Compliance 

(AMOCs) 

(k)(1) The Manager, Seattle Aircraft 

Certification Office, FAA, has the authority to 

approve AMOCs for this AD, if requested in 

accordance with 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 

(l) You must use Boeing Service Bulletin 

777–36A0026, Revision 1, dated February 8, 

2007, to perform the actions that are required 

by this AD, unless the AD specifies 

otherwise. The Director of the Federal 

Register approved the incorporation by 

reference of this document in accordance 

with 5 U.S.C. 552(a) and 1 CFR part 51. 

Contact Boeing Commercial Airplanes, P.O. 

Box 3707, Seattle, Washington 98124–2207, 

for a copy of this service information. You 

may review copies at the FAA, Transport 

Airplane Directorate, 1601 Lind Avenue, 

SW., Renton, Washington; or 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/federalregister/cfr/ibr-locations.html. 

Issued in Renton, Washington, on March 

21, 2007. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E7–5897 Filed 4–2–07; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2007–27628; Directorate 

Identifier 2007–CE–025–AD; Amendment 

39–15011; AD 2007–07–06] 

RIN 2120–AA64 

Airworthiness Directives; Columbia 

Aircraft Manufacturing (Previously the 

Lancair Company) Models LC40–

550FG, LC41–550FG, and LC42–550FG 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule; request for 

comments. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for 

Columbia Aircraft Manufacturing 

(previously The Lancair Company) 

Models LC40–550FG, LC41–550FG, and 

LC42–550FG airplanes. This AD 

requires you to add information to the 

Limitations section of the Airplane 

Flight Manual (AFM). This AD also 

requires you to repetitively inspect the 

aileron and the elevator linear bearings 

and control rods for foreign object 

debris, scarring, or damage and take all 

necessary corrective actions. This AD 

results from reports of possible foreign 

object contamination of the linear 

bearings. We are issuing this AD to 

prevent jamming in the aileron and 

elevator control systems, which could 

result in failure. This failure could lead 

to loss of control. 

DATES: This AD becomes effective on 

April 9, 2007. 

On April 9, 2007 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 4, 2007. 

ADDRESSES: Use one of the following 

addresses to comment on this AD. 

• DOT Docket Web site: Go to 

http://dms.dot.gov and follow the 

instructions for sending your comments 

electronically. 

• Mail: Docket Management Facility, 

U.S. Department of Transportation, 400 

Seventh Street, SW., Nassif Building, 

Room PL–401, Washington, DC 20590–

0001. 

• Fax: (202) 493–2251. 

• Hand Delivery: Room PL–401 on 

the plaza level of the Nassif Building, 

400 Seventh Street, SW., Washington, 

DC, between 9 a.m. and 5 p.m., Monday 

through Friday, except Federal holidays. 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov. Follow the 

instructions for submitting comments. 

To get the service information 

identified in this AD, contact Columbia 

Aircraft Manufacturing Corp., 22550 

Nelson Road, Bend, Oregon 97701; 

telephone: (888) 599–8660; e-mail: 

Product.Support@FlyColumbia.com. 

To view the comments to this AD, go 

to http://dms.dot.gov. The docket 

number is FAA–2007–27628; 

Directorate Identifier 2007–CE–025–AD. 

FOR FURTHER INFORMATION CONTACT: Jeff 

Morfitt, Aerospace Engineer, FAA, 

Seattle Aircraft Certification Office, 

1601 Lind Avenue, SW., Renton, WA 

98057; telephone: (425) 917–6405; fax: 

(425) 917–6590. 

SUPPLEMENTARY INFORMATION:


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