[Federal Register: December 3, 2003 (Volume 68, Number 232)]
[Proposed Rules]
[Page 67611-67613]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr03de03-12]
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Proposed Rules
Federal Register
________________________________________________________________________
This section of the FEDERAL REGISTER contains notices to the public of
the proposed issuance of rules and regulations. The purpose of these
notices is to give interested persons an opportunity to participate in
the rule making prior to the adoption of the final rules.
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[[Page 67611]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 2003-CE-47-AD]
RIN 2120-AA64
Airworthiness Directives; Goodrich Avionics Systems, Inc.
TAWS8000 Terrain Awareness Warning System
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: The FAA proposes to supersede airworthiness directive (AD)
2003-13-08, which currently applies to all Goodrich Avionics Systems,
Inc. (Goodrich) TAWS8000 terrain awareness warning systems (TAWS) that
are installed on airplanes. AD 2003-13-08 currently requires you to
inspect the TAWS installation and remove any TAWS where both the TAWS
and any other device are connected to the same baro set potentiometer.
AD 2003-13-08 also prohibits future installation of any TAWS8000 TAWS
that incorporates hardware ``Mod None'', ``Mod A'', or ``Mod B''. This
proposed AD is the result of omitting from AD 2003-13-08 a provision
that prohibits reconfiguring an installed TAWS8000 TAWS after it passes
the inspection unless it incorporates hardware ``Mod C''. This proposed
AD would retain the actions of AD 2003-13-08 and would also prohibit
future installation or reconfiguration of any TAWS8000 TAWS that does
not incorporate hardware ``Mod C''. We are issuing this proposed AD to
prevent the loading of the baro set potentiometer, which could result
in an unacceptable altitude error. That condition could cause the pilot
to make flight decisions that put the airplane in unsafe flight
conditions.
DATES: We must receive any comments on this proposed AD by February 2,
2004.
ADDRESSES: Use one of the following to submit comments on this proposed
AD:
[sbull] By mail: FAA, Central Region, Office of the Regional
Counsel, Attention: Rules Docket No. 2003-CE-47AD, 901 Locust, Room
506, Kansas City, Missouri 64106.
[sbull] By fax: (816) 329-3771. [sbull] By e-mail: 9-ACE-7-Docket@faa.gov. Comments sent
electronically must contain ``Docket No. 2003-CE-47-AD'' in the subject
line. If you send comments electronically as attached electronic files,
the files must be formatted in Microsoft Word 97 for Windows or ASCII.
You may get the service information identified in this proposed AD
from Goodrich Avionics Systems, Inc., 5353 52nd Street, SE, Grand
Rapids, Michigan 49512-9704; telephone: (616) 949-6600; facsimile:
(616) 977-6898. You may view the AD docket at FAA, Central Region,
Office of the Regional Counsel, Attention: Rules Docket No. 2003-CE-47-
AD, 901 Locust, Room 506, Kansas City, Missouri 64106. Office hours are
8 a.m. to 4 p.m., Monday through Friday, except Federal holidays.
FOR FURTHER INFORMATION CONTACT: Brenda S. Ocker, Aerospace Engineer,
FAA, Chicago Aircraft Certification Office, 2300 East Devon Avenue, Des
Plaines, Illinois 60018; telephone: (847) 294-7126; facsimile: (847)
294-7834.
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 ``AD
Docket No. 2003-CE-47-AD'' in the subject line of your comments. If you
want us to acknowledge receipt of your mailed comments, send us a self-
addressed, stamped postcard with the docket number written on it. We
will date-stamp your postcard and mail it back to you.
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.
Discussion
Has FAA taken any action to this point? Reports that the Goodrich
TAWS8000 TAWS causes altitude errors in other instruments when both the
TAWS and any other device are connected to the same baro set
potentiometer caused us to issue AD 2003-13-08, Amendment 39-13208.
The unsafe condition was discovered during the installation of a
TAWS8000 TAWS in a Cessna 500 series airplane. The TAWS8000 TAWS was
connected to the baro set potentiometer output of a Honeywell (Sperry)
BA-141 altimeter that was also connected to a Honeywell AZ-241 Air Data
Computer. The altimeter showed that the aircraft was 60 feet higher
than the actual altitude. This unsafe condition was confirmed with the
laboratory test of a TAWS8000 TAWS installation.
What has happened since AD 2003-13-08 to initiate this proposed
action? We omitted from AD 2003-13-08 a provision that prohibits
reconfiguring an installed TAWS8000 TAWS after it passes the inspection
unless it incorporates hardware ``Mod C'.
Since we issued AD 2003-13-08, Goodrich Avionics System, Inc. has
also developed a production improvement (Mod C) to eliminate the effect
of loading on the baro set potentiometer. Goodrich has issued an alert
service bulletin to implement this modification.
We received comments about the language in AD 2003-13-08. Owners/
operators are restricted from installing any TAWS8000 TAWS (part number
805-18000-001 that incorporates hardware ``Mod None'', ``Mod A'', or
``Mod B''). When the unit is modified to incorporate hardware ``Mod
C'', the unit will still have ``Mod None'', ``Mod A'', or ``Mod B''
marked on it. The intent of the AD was to allow for hardware
modifications other than ``Mod None'', ``Mod A'', or ``Mod B'' to be
installed.
What are the consequences if the condition is not corrected? AD
2003-13-08, as currently written, could cause confusion as to how to
incorporate the actions necessary in correcting the unsafe condition.
Is there service information that applies to this subject? Goodrich
[[Page 67612]]
Avionics Systems, Inc. has issued Service Memo SM 134, Revised
July 9, 2003, and Alert Service Bulletin SB A117, dated July
9, 2003.
What are the provisions of this service information? Goodrich
Avionics Systems, Inc. Service Memo SM 134, Revised July 9,
2003, introduces the release of product improvement hardware ``Mod C''
and restates the following information from the original issue of
Service Memo SM 134:
--The TAWS8000 should not be connected to a baro set potentiometer
if that potentiometer is also connected to any other device; and
--In existing installations where both the TAWS and any other
device are connected to the same baro set potentiometer, the TAWS8000
should be removed from the aircraft.
Goodrich Avionics Systems, Inc. Alert Service Bulletin SB
A117, dated July 9, 2003, specifies upgrading all TAWS8000
units to include hardware ``Mod C''.
FAA's Determination and Requirements of This Proposed AD
What has FAA decided? The FAA has reviewed all available
information, including the service information referenced above; and
determined that:
--The unsafe condition referenced in this document exists or could
develop on type design airplanes equipped with a Goodrich TAWS8000
TAWS, P/N 805-18000-001 that does not incorporate hardware ``Mod C'';
--Any airplane with one of these TAWS8000 TAWS units, P/N 805-
18000-001 should have the actions specified in the above service
information incorporated; and
--AD action should be taken in order to correct this unsafe
condition.
What would this proposed AD require? This proposed AD would
supersede AD 2003-13-08 with a new AD that proposes to require you to
inspect the TAWS installation and modify any TAWS where both the TAWS
and any other device are connected to the same baro set potentiometer.
This proposed AD would also prohibit future installation or
reconfiguration of any TAWS8000 TAWS that does not incorporate hardware
``Mod C''.
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 80 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
accomplish this proposed inspection:
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Total cost per
Labor cost Parts cost airplane Total cost on U.S. operators
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1 workhour x $65 = $65............... Not applicable.......... $65 65 x 80 = $5,200
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We estimate the following costs to accomplish any necessary
modifications that would be required based on the results of this
proposed inspection. We have no way of determining the number of
airplanes that may need the modification:
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Total cost per
Labor cost Parts cost airplane
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2 workhours x $65 = $130 (1 All units will be $130
workhour to remove and 1 modified at the
workhour to replace). Goodrich Avionics
Systems facility
under warranty.
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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 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 No. 2003-CE-47-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 removing Airworthiness Directive
(AD) 2003-13-08, Amendment 39-13208 (68 FR 38586, June 30, 2003), and
by adding a new AD to read as follows:
Goodrich Avionics Systems, Inc.: Docket No. 2003-CE-47-AD;
Supersedes AD 2003-13-08, Amendment 39-13208.
[[Page 67613]]
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 February 2, 2004.
What Other ADs Are Affected by This Action?
(b) This AD supersedes AD 2003-13-08, Amendment 39-13208.
What Airplanes Are Affected by This AD?
(c) This AD affects the following airplane models and serial
numbers that:
(1) Are certificated in any category; and
(2) Incorporate any Goodrich TAWS8000 terrain awareness warning
system (TAWS), part number (P/N) 805-18000-001, that incorporates
hardware ``Mod None'', ``Mod A'', or ``Mod B'', and is installed in,
but not limited to, the following airplanes. Airplanes that are not
in this list and have the TAWS installed through field approval or
other methods are still affected by this AD:
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Company Models
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Cessna Aircraft Company............. 421, 500, 501, 525, 525A, 550, 551, 650, and S550.
DASSAULT AVIATION................... Mystere-Falcon 20 series.
Gulfstream Aerospace LPN............ 1125 Westwind Astra.
Raytheon Aircraft Company........... 100, 200, 300, 400A, and F90.
Sabreliner Corporaiton.............. NA-265.
The New Piper Aircraft Inc.......... PA-42-1000.
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What Is the Unsafe Condition Presented in This AD?
(d) The actions specified by this AD are intended to prevent the
loading of the baro set potentiometer, which could result in an
unacceptable altitude error. This condition could cause the pilot to
make flight decisions that put the airplane in unsafe flight
conditions.
What Must I Do To Address This Problem?
(e) To address this problem, you must do the following:
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Actions Compliance Procedures
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(1) Inspect the TAWS8000 Within the next 5 Follow Goodrich
TAWS (part number 805-18000- hours time-in- Avionics Systems,
001 that incorporates service (TIS) after Inc. Service Memo
hardware ``Mod None'', July 21, 2003 (the SM 134,
``Mod A'', or ``Mod B'') effective date of dated May 2, 2003,
installation to determine AD 2003-13-08), and the applicable
if both the TAWS8000 TAWS unless already installation
and any other device are accomplished. manual.
connected to the same baro
set potentiometer.
(2) If both the TAWS8000 Before further Follow Goodrich
TAWS and any other device flight after the Avionics Systems,
are connected to the same inspection required Inc. Service Memo
baro set potentiometer, in paragraph (d)(1) SM 134,
remove the TAWS8000 TAWS of this AD. dated May 2, 2003,
and cap and stow the and the applicable
connecting wires or replace installation
the TAWS8000 TAWS unit with manual.
a unit that incorporates
hardware ``Mod C''.
(3) Do not install or As of the effective Not Applicable.
reconfigure any TAWS8000 date of this AD.
TAWS (part number 805-18000-
001) that does not
incorporate hardware ``Mod
C''.
------------------------------------------------------------------------
May I Request an Alternative Method of Compliance?
(f) You may request a different method of compliance or a
different compliance time for this AD by following the procedures in
14 CFR 39.13.
(1) Send your request to the Manager, Chicago Aircraft
Certification Office (ACO), FAA. For information on any already
approved alternative methods of compliance, contact Brenda S. Ocker,
Aerospace Engineer, FAA, Chicago Aircraft Certification Office, 2300
East Devon Avenue, Des Plaines, Illinois 60018; telephone: (847)
294-7126; facsimile: (847) 294-7834.
(2) Alternative methods of compliance approved in accordance
with AD 2003-13-08, which is superseded by this AD, are approved as
alternative methods of compliance with this AD.
May I Get Copies of the Documents Referenced in This AD?
(g) You may get copies of the documents referenced in this AD
from Goodrich Avionics Systems, Inc., 5353 52nd Street, SE, Grand
Rapids, Michigan 49512-9704; telephone: (616) 949-6600; facsimile:
(616) 977-6898. You may view these documents at FAA, Central Region,
Office of the Regional Counsel, 901 Locust, Room 506, Kansas City,
Missouri 64106.
Issued in Kansas City, Missouri, on November 25, 2003.
Michael Gallagher,
Manager, Small Airplane Directorate, Aircraft Certification Service.
[FR Doc. 03-30074 Filed 12-2-03; 8:45 am]
BILLING CODE 4910-13-P