[Federal Register Volume 65, Number 219 (Monday, November 13, 2000)]
[Proposed Rules]
[Pages 67663-67664]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 00-28968]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 2000-NM-319-AD]
RIN 2120-AA64


Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. 
(EMBRAER) Model EMB-135 and EMB-145 Series Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: This document proposes the adoption of a new airworthiness 
directive (AD) that is applicable to certain EMBRAER Model EMB-135 and 
EMB-145 series airplanes. This proposal would require replacement of 
certain brake control units (BCU) with new units. This action is 
necessary to prevent uncommanded application of 50 percent braking in 
one pair of wheels, which could result in the airplane skidding off the 
runway. This action is intended to address the identified unsafe 
condition.

DATES: Comments must be received by December 13, 2000.

ADDRESSES: Submit comments in triplicate to the Federal Aviation 
Administration (FAA), Transport Airplane Directorate, ANM-114, 
Attention: Rules Docket No. 2000-NM-319-AD, 1601 Lind Avenue, SW., 
Renton, Washington 98055-4056. Comments may be inspected at this 
location between 9:00 a.m. and 3:00 p.m., Monday through Friday, except 
Federal holidays. Comments may be submitted via fax to (425) 227-1232. 
Comments may also be sent via the Internet using the following address: 
<a href="/cdn-cgi/l/email-protection#7f46521e111252110f0d121c1012121a110b3f191e1e51181009"><span class="__cf_email__" data-cfemail="b38a9ed2ddde9eddc3c1ded0dcdeded6ddc7f3d5d2d29dd4dcc5">[email protected]</span></a>. Comments sent via fax or the Internet must 
contain ``Docket No. 2000-NM-319-AD'' in the subject line and need not 
be submitted in triplicate. Comments sent via the Internet as attached 
electronic files must be formatted in Microsoft Word 97 for Windows or 
ASCII text.
    The service information referenced in the proposed rule may be 
obtained from Empresa Brasileira de Aeronautica S.A. (EMBRAER), P.O. 
Box 343--CEP 12.225, Sao Jose dos Campos SP, Brazil. This information 
may be examined at the FAA, Transport Airplane Directorate, 1601 Lind 
Avenue, SW., Renton, Washington; or at the FAA, Atlanta Aircraft 
Certification Office, One Crown Center, 1895 Phoenix Boulevard, suite 
450, Atlanta, Georgia.

FOR FURTHER INFORMATION CONTACT: Robert Capezzuto, Aerospace Engineer, 
Systems and Flight Test Branch, ACE-116A, FAA, Atlanta Aircraft 
Certification Office, One Crown Center, 1895 Phoenix Boulevard, suite 
450, Atlanta, Georgia 30349; telephone (770) 703-6071; fax (770) 703-
6097.

SUPPLEMENTARY INFORMATION:

Comments Invited

    Interested persons are invited to participate in the making of the 
proposed rule by submitting such written data, views, or arguments as 
they may desire. Communications shall identify the Rules Docket number 
and be submitted in triplicate to the address specified above. All 
communications received on or before the closing date for comments, 
specified above, will be considered before taking action on the 
proposed rule. The proposals contained in this notice may be changed in 
light of the comments received.
    Submit comments using the following format:
    <bullet> Organize comments issue-by-issue. For example, discuss a 
request to change the compliance time and a request to change the 
service bulletin reference as two separate issues.
    <bullet> For each issue, state what specific change to the proposed 
AD is being requested.
    <bullet> Include justification (e.g., reasons or data) for each 
request.
    Comments are specifically invited on the overall regulatory, 
economic, environmental, and energy aspects of the proposed rule. All 
comments submitted will be available, both before and after the closing 
date for comments, in the Rules Docket for examination by interested 
persons. A report summarizing each FAA-public contact concerned with 
the substance of this proposal will be filed in the Rules Docket.
    Commenters wishing the FAA to acknowledge receipt of their comments 
submitted in response to this notice must submit a self-addressed, 
stamped postcard on which the following statement is made: ``Comments 
to Docket Number 2000-NM-319-AD.'' The postcard will be date stamped 
and returned to the commenter.

Availability of NPRMs

    Any person may obtain a copy of this NPRM by submitting a request 
to the FAA, Transport Airplane Directorate, ANM-114, Attention: Rules 
Docket No. 2000-NM-319-AD, 1601 Lind Avenue, SW., Renton, Washington 
98055-4056.

Discussion

    The Departmento de Aviacao Civil (DAC), which is the airworthiness 
authority for Brazil, notified the FAA that an unsafe condition may 
exist on certain EMBRAER Model EMB-135 and EMB-145 series airplanes. 
The DAC advises that it received a report of one occurrence in which 
the flight crew noticed uncommanded brake application on an EMB-145 
series airplane. Analysis of the brake control unit (BCU) that was 
removed after this occurrence revealed a condition that caused 
uncommanded application of 50 percent braking in one pair of wheels. 
This condition, if not corrected, could result in the airplane skidding 
off the runway.

Explanation of Relevant Service Information

    EMBRAER has issued Service Bulletin 145-32-0060, Change No. 01, 
dated June 6, 2000, which describes procedures for replacement of 
certain BCU's with new units. The procedures involve converting BCU's 
having a particular part number to a new part number, replacing certain 
units with new units, and performing a functional check of the main 
brake system. Accomplishment of the actions specified in the service 
bulletin is intended to adequately address the identified unsafe 
condition. The DAC classified this service bulletin as mandatory and 
issued Brazilian airworthiness directive 2000-07-01, dated August 20, 
2000, in order to assure the continued airworthiness of these airplanes 
in Brazil.

FAA's Conclusions

    These airplane models are manufactured in Brazil and are type 
certificated for operation in the United States under the provisions of 
section 21.29 of the Federal Aviation Regulations (14 CFR 21.29) and 
the applicable bilateral airworthiness agreement. Pursuant to this 
bilateral airworthiness agreement, the DAC has

[[Page 67664]]

kept the FAA informed of the situation described above. The FAA has 
examined the findings of the DAC, reviewed all available information, 
and determined that AD action is necessary for products of this type 
design that are certificated for operation in the United States.

Explanation of Requirements of Proposed Rule

    Since an unsafe condition has been identified that is likely to 
exist or develop on other airplanes of the same type design registered 
in the United States, the proposed AD would require accomplishment of 
the actions specified in the service bulletin described previously.

Difference Between Proposed AD and Brazilian Airworthiness 
Directive

    Operators should note that the applicability of the Brazilian 
airworthiness directive includes all Model EMB-135 and EMB-145 series 
airplanes. However, the applicability of this proposed AD points to the 
effectivity of the referenced service bulletin, which specifies 
affected airplane serial numbers and provides information on in-
production airplanes.

Cost Impact

    The FAA estimates that 165 Model EMB-135 and EMB-145 series 
airplanes of U.S. registry would be affected by this proposed AD. It 
would take approximately 5 work hours per airplane (2.5 work hours per 
BCU) to accomplish the proposed actions, at an average labor rate of 
$60 per work hour. Required parts would be provided by a vendor at no 
charge to the operator. Based on these figures, the cost impact of the 
proposed AD on U.S. operators is estimated to be $49,500, or $300 per 
airplane.
    The cost impact figure discussed above is based on assumptions that 
no operator has yet accomplished any of the proposed requirements of 
this AD action, and that no operator would accomplish those actions in 
the future if this AD were not adopted. The cost impact figures 
discussed in AD rulemaking actions represent only the time necessary to 
perform the specific actions actually required by the AD. These figures 
typically do not include incidental costs, such as the time required to 
gain access and close up, planning time, or time necessitated by other 
administrative actions.

Regulatory Impact

    The regulations proposed herein 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. Therefore, it 
is determined that this proposal would not have federalism implications 
under Executive Order 13132.
    For the reasons discussed above, I certify that this proposed 
regulation: (1) Is not a ``significant regulatory action'' under 
Executive Order 12866; (2) is not a ``significant rule'' under the DOT 
Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); 
and (3) if promulgated, 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. A copy of the draft 
regulatory evaluation prepared for this action is contained in the 
Rules Docket. A copy of it may be obtained by contacting the Rules 
Docket at the location provided under the caption ADDRESSES.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Safety.

The Proposed Amendment

    Accordingly, pursuant to the authority delegated to me by the 
Administrator, the Federal Aviation Administration proposes to amend 
part 39 of the Federal Aviation Regulations (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. Section 39.13 is amended by adding the following new 
airworthiness directive:

Empresa Brasileira De Aeronautica S.A. (Embraer): Docket 2000-NM-
319-AD.

    Applicability: Model EMB-135 and EMB-145 series airplanes, 
certificated in any category, as listed in EMBRAER Service Bulletin 
145-32-0060, Change No. 01, dated June 6, 2000.

    Note 1: This AD applies to each airplane identified in the 
preceding applicability provision, regardless of whether it has been 
modified, altered, or repaired in the area subject to the 
requirements of this AD. For airplanes that have been modified, 
altered, or repaired so that the performance of the requirements of 
this AD is affected, the owner/operator must request approval for an 
alternative method of compliance in accordance with paragraph (c) of 
this AD. The request should include an assessment of the effect of 
the modification, alteration, or repair on the unsafe condition 
addressed by this AD; and, if the unsafe condition has not been 
eliminated, the request should include specific proposed actions to 
address it.

    Compliance: Required as indicated, unless accomplished 
previously.
    To prevent uncommanded application of 50 percent braking in one 
pair of wheels, which could result in the airplane skidding off the 
runway, accomplish the following:

Replacement

    (a) Within 2,000 landings after the effective date of this AD: 
Replace the brake control unit (BCU) having part number (P/N) 42-
951-1 or 42-951-2 with a new BCU having P/N 42-951-3 in accordance 
with EMBRAER Service Bulletin 145-32-0060, Change No. 01, dated June 
6, 2000.

Spares

    (b) As of the effective date of this AD, no person shall install 
on any airplane a BCU having P/N 42-951-1 or 42-951-2.

Alternative Methods of Compliance

    (c) An alternative method of compliance or adjustment of the 
compliance time that provides an acceptable level of safety may be 
used if approved by the Manager, Atlanta Aircraft Certification 
Office (ACO), FAA. Operators shall submit their requests through an 
appropriate FAA Principal Maintenance Inspector, who may add 
comments and then send it to the Manager, Atlanta ACO.

    Note 2: Information concerning the existence of approved 
alternative methods of compliance with this AD, if any, may be 
obtained from the Atlanta ACO.

Special Flight Permits

    (d) Special flight permits may be issued in accordance with 
sections 21.197 and 21.199 of the Federal Aviation Regulations (14 
CFR 21.197 and 21.199) to operate the airplane to a location where 
the requirements of this AD can be accomplished.

    Note 3: The subject of this AD is addressed in Brazilian 
airworthiness directive 2000-07-01, dated August 20, 2000.


    Issued in Renton, Washington, on November 6, 2000.
Donald L. Riggin,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 00-28968 Filed 11-9-00; 8:45 am]
BILLING CODE 4910-13-P


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