[Federal Register Volume 70, Number 162 (Tuesday, August 23, 2005)]
[Proposed Rules]
[Pages 49217-49221]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 05-16708]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2005-20712; Directorate Identifier 2005-CE-15-AD]
RIN 2120-AA64


Airworthiness Directives; Raytheon Aircraft Company, Model 390, 
Premier 1 Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD) 
for certain Raytheon Aircraft Company (Raytheon), Model 390, Premier 1 
airplanes. For certain airplanes, this proposed AD would require you 
(unless already done) to replace the plastic cover over the air 
conditioning motor module with a metallic cover and modify the air 
conditioning compressor motor module electromagnetic interference-radio 
frequency interference (EMI-RFI) filter located under the cover and 
reidentify the module part number. For all airplanes, the proposed AD 
would limit future installations of the cover for the air conditioner 
and the air conditioning compressor motor module. This proposed AD 
results from reports that the plastic cover over the air conditioning 
motor module was found melted or burned and that the overheating of the 
EMI-RFI filter assembly located under the cover caused this damage. We 
are issuing this proposed AD to prevent the melting or burning of the 
plastic cover. The burning of the plastic cover could result in a fire.

DATES: We must receive any comments on this proposed AD by October 21, 
2005.

ADDRESSES: Use one of the following to submit comments on this proposed 
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 20590-001.
     Fax: 1-202-493-2251.
     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.
    To get the service information identified in this proposed AD, 
contact Raytheon Aircraft Company, PO Box 85,

[[Page 49218]]

Wichita, Kansas 67201-0085; telephone: (800) 625-7043.
    To view the comments to this proposed AD, go to http://dms.dot.gov. 
The docket number is FAA-2005-20712; Directorate Identifier 2005-CE-15-
AD.

FOR FURTHER INFORMATION CONTACT: Philip Petty, Aerospace Engineer, ACE-
119W, Wichita Aircraft Certification Office, 1801 Airport Road, Room 
100, Wichita, Kansas 67209; telephone: (316) 946-4139; facsimile: (316) 
946-4107.

SUPPLEMENTARY INFORMATION:

Comments Invited

    How do I comment on this proposed AD? We invite you to submit any 
written relevant data, views, or arguments regarding this proposal. 
Send your comments to an address listed under ADDRESSES. Include the 
docket number, ``FAA-2005-20712; Directorate Identifier 2005-CE-15-AD'' 
at the beginning of your comments. 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 proposed 
rulemaking. Using the search function of our docket web site, anyone 
can find and read the comments received into 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.). 
This is docket number FAA-2005-20712; Directorate Identifier 2005-CE-
15-AD. 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.
    Are there any specific portions of this proposed AD I should pay 
attention to? We specifically invite comments on the overall 
regulatory, economic, environmental, and energy aspects of this 
proposed AD. If you contact us through a nonwritten communication and 
that contact relates to a substantive part of this proposed AD, we will 
summarize the contact and place the summary in the docket. We will 
consider all comments received by the closing date and may amend this 
proposed AD in light of those comments and contacts.

Docket Information

    Where can I go to view the docket information? You may view the AD 
docket that contains the proposal, any comments received, and any final 
disposition in person at the DMS Docket Offices between 9 a.m. and 5 
p.m. (eastern time), Monday through Friday, except Federal holidays. 
The Docket Office (telephone 1-800-647-5227) is located on the plaza 
level of the Department of Transportation NASSIF Building at the street 
address stated in ADDRESSES. You may also view the AD docket on the 
Internet at http://dms.dot.gov. The comments will be available in the 
AD docket shortly after the DMS receives them.

Discussion

    What events have caused this proposed AD? The FAA has received 
reports that the plastic cover over the air conditioning motor module 
for certain Raytheon Aircraft Company (Raytheon), Model 390, Premier 1 
airplanes was found melted or burned. The overheating of the 
electromagnetic interference-radio frequency interference (EMI-RFI) 
filter assembly located under the plastic cover caused this damage.
    Raytheon has developed two partial fixes that together remedy the 
problem. In February 2005, Raytheon implemented a partial fix to the 
problem with a service bulletin for the replacement of the plastic 
cover with a manufactured or a field fabricated metal cover. Raytheon, 
in June 2005, issued a service bulletin for the modification of the 
EMI-RFI filter assembly.
    What is the potential impact if FAA took no action? The burning of 
the plastic cover could result in a fire.
    Is there service information that applies to this subject? Raytheon 
has issued:

--Service Bulletin No. SB 21-3715, dated February 2005: Includes 
procedures for replacing the plastic cover over the air conditioning 
motor module with a metallic cover (part number ((P/N) 390-555015-0001) 
and doing the field fabrication of the metallic cover (P/N 390-555015-
0001); and
--Service Bulletin No. SB 21-3733, dated June 2005: This Raytheon 
service bulletin includes Enviro Systems Inc. Service Bulletin No. 
SB05-101, Revision B, dated April 27, 2005. These service bulletins 
include procedures for doing the modification of the air conditioning 
compressor motor module EMI-RFI filter and reidentifying the module 
part number.

FAA's Determination and Requirements of This Proposed AD

    What has FAA decided? 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. For this reason, we are 
proposing AD action.
    What would this proposed AD require? This proposed AD would require 
you to:

--Replace the plastic cover over the air conditioning motor module with 
a metallic cover (P/N 390-555015-0001) for certain airplanes;
--Modify the air conditioning compressor motor module EMI-RFI filter 
and reidentify the module part number for certain airplanes; and
--Limit future installations of the cover for the air conditioner and 
the air conditioning compressor motor module for all airplanes.

    How does the revision to 14 CFR part 39 affect this proposed AD? On 
July 10, 2002, we published a new version of 14 CFR part 39 (67 FR 
47997, July 22, 2002), which governs FAA's AD system. This regulation 
now includes material that relates to altered products, special flight 
permits, and alternative methods of compliance. This material 
previously was included in each individual AD. Since this material is 
included in 14 CFR part 39, we will not include it in future AD 
actions.

Costs of Compliance

    How many airplanes would this proposed AD impact? We estimate that 
this proposed AD affects 100 airplanes in the U.S. registry.
    What would be the cost impact of this proposed AD on owners/
operators of the affected airplanes? We estimate the following costs to 
do this proposed replacement of the plastic cover with a new 
manufactured metallic cover (P/N 390-555015-0001, or FAA-approved 
equivalent part number) that you buy:

----------------------------------------------------------------------------------------------------------------
                                                                                 Total cost per   Total cost on
                          Labor cost                              Parts cost        airplane      U.S. operators
----------------------------------------------------------------------------------------------------------------
1 work hour x $65 = $65......................................            $600             $665          $66,500
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[[Page 49219]]

    We estimate the following costs to do the field fabrication of the 
metallic cover (P/N 390-555015-0001) if you choose not to buy a new 
metallic cover and the proposed labor for the replacement of the 
plastic cover:

----------------------------------------------------------------------------------------------------------------
                                                                                 Total cost per   Total cost on
                          Labor cost                              Parts cost        airplane      U.S. operators
----------------------------------------------------------------------------------------------------------------
16 work hour x $65 = $1,040..................................             $20           $1,060         $106,000
----------------------------------------------------------------------------------------------------------------

    We estimate the following costs to modify the air conditioning 
compressor motor module EMI-RFI filter and reidentify the module part 
number:

----------------------------------------------------------------------------------------------------------------
                                                                                 Total cost per   Total cost on
                          Labor cost                              Parts cost        airplane      U.S. operators
----------------------------------------------------------------------------------------------------------------
2 work hours x $65 = $130....................................            $600             $730          $73,000
----------------------------------------------------------------------------------------------------------------

Authority for This Rulemaking

    What authority does FAA have for issuing this rulemaking action? 
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 AD.

Regulatory Findings

    Would this proposed AD impact various entities? 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.
    Would this proposed AD involve a significant rule or regulatory 
action? For the reasons discussed above, I certify that this 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. 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 summary of the costs to comply with this proposed AD 
(and other information as included in the Regulatory Evaluation) and 
placed it in the AD Docket. You may get a copy of this summary by 
sending a request to us at the address listed under ADDRESSES. Include 
``AD Docket FAA-2005-20712; Directorate Identifier 2005-CE-15-AD'' in 
your request.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Safety.

The Proposed Amendment

    Accordingly, 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.


Sec.  39.13  [Amended]

    2. The FAA amends Sec.  39.13 by adding the following new 
airworthiness directive (AD):

Raytheon Aircraft Company: Docket No. FAA-2005-20712; Directorate 
Identifier 2005-CE-15-AD

When Is the Last Date I Can Submit Comments on This Proposed AD?

    (a) We must receive comments on this proposed airworthiness 
directive (AD) by October 21, 2005.

What Other ADs Are Affected by This Action?

    (b) None.

What Airplanes Are Affected By This AD?

    (c) This AD applies to the following airplane models and serial 
numbers that are certificated in any category:
    (1) Group 1: Raytheon Aircraft Company, Model 390, Premier 1 
Airplanes, serial numbers RB-1, RB-4 through RB-101, RB-103 through 
RB-119, and RB-121, that have not replaced the plastic cover over 
the compressor motor module with a metallic one (part number (P/N) 
390-555015-0001, or FAA-approved equivalent part number).
    (2) Group 2: Raytheon Aircraft Company, Model 390, Premier 1 
Airplanes, serial numbers RB-1, RB-4 through RB-101, RB-103 through 
RB-119, and RB-121, that have installed the metallic cover (P/N 390-
555015-0001, or FAA-approved equivalent part number).
    (3) Group 3: Raytheon Aircraft Company, Model 390, Premier 1 
Airplanes, serial numbers RB-120 and RB-122 through RB-129.

What Is the Unsafe Condition Presented in This AD?

    (d) This AD is the result of reports that the plastic cover over 
the air conditioning motor module was found melted or burned and 
that the overheating of the electromagnetic interference-radio 
frequency interference (EMI-RFI) filter assembly located under the 
cover caused this damage. The actions specified in this AD are 
intended to prevent the melting or burning of the plastic cover. The 
burning of the plastic cover could result in a fire.

What Must I Do To Address This Problem?

    (e) What actions must I do to address this problem for Group 1 
airplanes? To address this problem for Group 1 airplanes, you must 
do the following:

[[Page 49220]]



------------------------------------------------------------------------
           Actions                 Compliance            Procedures
------------------------------------------------------------------------
(1) Air Conditioning Motor    Within 30 days after  Follow Raytheon
 Module Cover Replacement:     the effective date    Aircraft Company
 Replace the plastic cover     of this AD, unless    Service Bulletin
 over the air conditioning     already done.         No. SB 21-3715,
 motor module with a new or                          dated February
 fabricated metallic cover.                          2005.
 You may use Raytheon part
 number (P/N) 390-555015-
 0001.
(2) Air Conditioning          Within 30 days after  Follow Raytheon
 Compressor Motor Module EMI-  the effective date    Aircraft Company
 RFI Filter Modification:      of this AD, unless    Service Bulletin
 Modify the air conditioning   already done.         No. SB 21-3733,
 motor module EMI-RFI filter                         dated June 2005;
 and reidentify the module                           and Enviro Systems
 part number with a P/N 390-                         Inc. Service
 385026-0003 module.                                 Bulletin No. SB05-
                                                     101, Revision B,
                                                     dated April 27,
                                                     2005.
(3) Future Installations--    As of the effective   Follow Raytheon
 Cover for Air Conditioner:    date of this AD.      Aircraft Company
 You must only install a                             Service Bulletin
 metal cover over the air                            No. SB 21-3715,
 conditioning motor module.                          dated February
 This is mandatory equipment.                        2005.
(4) Future Installations--    As of the effective   Not Applicable.
 Air Conditioning Compressor   date of this AD.
 Motor Module: Do not
 install any compressor
 motor module, P/N 390-
 385026-0001.
------------------------------------------------------------------------

    (f) What actions must I do to address this problem for Group 2 
airplanes? To address this problem for Group 2 airplanes, you must 
do the following:

------------------------------------------------------------------------
           Actions                 Compliance            Procedures
------------------------------------------------------------------------
(1) Air Conditioning          Within 60 days after  Follow Raytheon the
 Compressor Motor Module EMI-  the effective date    Aircraft Company
 RFI Filter Modification:      of this AD, unless    Service Bulletin
 Modify the air conditioning   already done.         No. SB 21-3733,
 motor module EMI-RFI filter                         dated June 2005;
 and reidentify the module                           and Enviro Systems
 part number with a P/N 390-                         Inc. Service
 385026-0003 module.                                 Bulletin No. SB05-
                                                     101, Revision B,
                                                     dated April 27,
                                                     2005.
(2) Future Installations--    As of the effective   Follow Raytheon
 Cover for Air Conditioner:    date of this AD.      Aircraft Company
 You must only install a                             Service Bulletin
 metal cover over the air                            No. SB 21-3715,
 conditioning motor module.                          dated February
 This is mandatory equipment.                        2005.
(3) Future Installations--    As of the effective   Not Applicable.
 Air Conditioning Compressor   date of this AD.
 Motor Module: Do not
 install any compressor
 motor module, P/N 390-
 385026-0001.
------------------------------------------------------------------------

    (g) What actions must I do to address this problem for Group 3 
airplanes? To address this problem for Group 3 airplanes, you must 
do the following:

------------------------------------------------------------------------
           Actions                 Compliance            Procedures
------------------------------------------------------------------------
(1) Air Conditioning          Within 60 days after  Follow Raytheon
 Compressor Motor Module EMI-  the effective date    Aircraft Company
 RFI Filter Modification:      of this AD, unless    Service Bulletin
 Modify the air conditioning   already done.         No. SB 21-3733,
 motor module EMI-RFI filter                         dated June 2005;
 and reidentify the module                           and Enviro Systems
 part number with a P/N 390-                         Inc. Service
 385026-0003 module.                                 Bulletin No. SB05-
                                                     101, Revision B,
                                                     dated April 27,
                                                     2005.
(2) Future Installations--    As of the effective   Follow Raytheon
 Cover for Air Conditioner:    date of this AD.      Aircraft Company
 You must only install a                             Service Bulletin
 metal cover over the air                            No. SB 21-3715,
 conditioning motor module.                          dated February
 This is mandatory equipment.                        2005.
(3) Future Installations--    As of the effective   Not Applicable.
 Air Conditioning Compressor   date of this AD.
 Motor Module: Do not
 install any compressor
 motor module, P/N 390-
 385026-0001.
------------------------------------------------------------------------

May I Request an Alternative Method of Compliance?

    (h) You may request a different method of compliance or a 
different compliance time for this AD by following the procedures in 
14 CFR 39.19. Unless FAA authorizes otherwise, send your request to 
your principal inspector. The principal inspector may add comments 
and will send your request to the Manager, Wichita Aircraft 
Certification Office (ACO), FAA. For information on any already 
approved alternative methods of compliance, contact Philip Petty, 
Aerospace Engineer, ACE-119W, Wichita ACO, 1801 Airport Road, Room 
100, Wichita, Kansas 67209; telephone: (316) 946-4139; facsimile: 
(316) 946-4107.

May I Get Copies of the Documents Referenced in This AD?

    (i) To get copies of the documents referenced in this AD, 
contact Raytheon Aircraft Company, P.O. Box 85, Wichita, Kansas 
67201-0085; telephone: (800) 625-7043. To view the AD docket, go to 
the Docket Management Facility; U.S. Department of Transportation, 
400 Seventh Street, S.W., Nassif Building, Room PL-401,

[[Page 49221]]

Washington, DC, or on the Internet at http://dms.dot.gov. The docket 
number is Docket No. FAA-2005-20712; Directorate Identifier 2005-CE-
15-AD.

    Issued in Kansas City, Missouri, on August 16, 2005.
Terry L. Chasteen,
Acting Manager, Small Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 05-16708 Filed 8-22-05; 8:45 am]
BILLING CODE 4910-13-P