[Federal Register Volume 71, Number 88 (Monday, May 8, 2006)]
[Proposed Rules]
[Pages 26707-26711]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E6-6905]
[[Page 26707]]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2006-24010; Directorate Identifier 2006-CE-14-AD]
RIN 2120-AA64
Airworthiness Directives; Cirrus Design Corporation Model SR20
and SR22 Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for certain Cirrus Design Corporation (CDC) Model SR20 and SR22
airplanes. This proposed AD would require you to check the maintenance
records to determine whether the brake caliper piston O-ring seals were
replaced at the last annual or 100-hour inspection. If the O-rings were
not replaced, this proposed AD would require you to replace the O-ring
seals with new seals or replace brake calipers. This proposed AD would
also require you to modify the main landing gear wheel fairings to add
temperature indicator sticker inspection holes, trim the wheel fairings
to prevent them from holding fluids, install temperature indicator
stickers on the brake calipers, and insert Revision A6 (with revised
preflight walk-around and taxi procedures) into the Pilot's Operating
Handbook (POH). This proposed AD results from several reports of
airplanes experiencing brake fires and two airplanes losing directional
control. We are issuing this proposed AD to detect, correct, and
prevent overheating damage to the brake caliper piston O-ring seals,
which could result in leakage of brake hydraulic fluid. Consequently,
this could lead to the loss of braking with loss of airplane
directional control or brake fire.
DATES: We must receive comments on this proposed AD by July 10, 2006.
ADDRESSES: Use one of the following addresses to comment 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 20590-0001. 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.
For service information identified in this proposed AD, contact
Cirrus Design Corporation, 4515 Taylor Circle, Duluth, Minnesota 55811;
telephone: (218) 727-2737 or on the Internet at http://www.cirrusdesign.com.
You may examine the comments on this proposed AD in the AD docket
on the Internet at http://dms.dot.gov.
FOR FURTHER INFORMATION CONTACT: Wess Rouse, Aerospace Engineer, ACE-
117C, Chicago Aircraft Certification Office, 2300 East Devon Avenue,
Room 107, Des Plaines, Illinois 60018; telephone: (847) 294-8113;
facsimile: (847) 294-7834.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written relevant data, views, or
arguments regarding this proposal. Send your comments to an address
listed under ADDRESSES. Include the docket number, ``FAA-2006-24010;
Directorate Identifier 2006-CE-14-AD'' at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of the proposed AD. We will
consider all comments received by the closing date and may amend the
proposed AD in light of those 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 the DOT 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.).
Discussion
The FAA recently received four reports of CDC Models SR20 and SR22
airplanes experiencing brake fires and one airplane losing directional
control resulting in contact with a parked airplane. There was one
prior report of loss of directional control in 2002.
Investigation has shown that with a free castering nose wheel,
occasional right braking during taxi is necessary due to helical
propwash. Excessive brake use during taxi can result in overheating
damage of the O-ring seals on the right brake caliper piston.
Consequently, the overheating damage of the O-ring seals on the brake
caliper piston results in leakage of brake hydraulic fluid.
In addition to excessive use of the right brake, data suggests that
brake caliper piston O-ring seals have not typically been replaced at
annual or 100-hour inspections as specified in the Aircraft Maintenance
Manual (AMM).
To address this unsafe condition, CDC has developed the following:
Modifications to the main landing gear (MLG) wheel
fairings to add temperature indicator sticker inspection holes and trim
the wheel fairings to ensure that any leaking hydraulic fluid runs onto
the pavement where it may be seen rather than collecting in the wheel
pants;
Temperature indicator stickers to install on brake
calipers; and
Revision A6 for the POH (with revised preflight walk-
around and taxi procedures).
This condition, if not corrected, could cause leakage of brake
hydraulic fluid and lead to the loss of braking with loss of airplane
directional control or brake fire.
Relevant Service Information
We have reviewed CDC Service Bulletins SB 2X-32-13, Issued:
December 15, 2005; and SB 2X-32-14 R1, Issued: January 18, 2006,
Revised: February 17, 2006.
The service information describes procedures for:
A wheel conversion and brake upgrade; and
Modifications of the MLG fairings to include inspection
holes that facilitate monitoring (temperature indicator stickers) for
brake assembly temperature and trimming of the MLG fairings to provide
for additional clearance;
Installation of temperature indicator stickers on the
brake assemblies; and
Incorporation of Revision A6 into the POH.
FAA's Determination and Requirements of the Proposed AD
We are proposing this AD to address an unsafe condition that we
determined is likely to exist or develop on other products of this same
type design. The proposed AD would require you to:
Check the maintenance records to determine whether the
brake caliper piston O-ring seals were replaced at the last annual or
100-hour inspection, and,
[[Page 26708]]
if not replaced, replace the O-ring seals with new seals or replace
brake calipers;
Modify the MLG wheel fairings to add a temperature
indicator sticker inspection hole;
Trim the wheel fairings to prevent them from holding
fluids;
Install temperature indicator stickers on the brake
calipers; and
Insert Revision A6 into the POH.
The proposed AD would require you to use the service information
described previously to perform these actions.
Differences Between the Proposed AD and Service Information
The proposed AD would require you to check the maintenance records
to determine whether the brake caliper piston O-ring seals were
replaced at the last annual or 100-hour inspection, and, if not
replaced, would require you to replace the O-ring seals with new seals
or replace brake calipers. This step is not included in the service
bulletin. We include it in the proposed AD to assure the O-ring seals
are replaced or have been recently replaced. Replacement procedures for
the brake caliper piston O-ring seals are in Section 32-42 of the CDC
Model SR20 or SR22 AMM. The requirements of the proposed AD, if adopted
as a final rule, would take precedence over the provisions in the
service information.
Costs of Compliance
We estimate that this proposed AD affects 2,135 airplanes in the
U.S. registry.
We estimate the following costs to do this proposed check of
maintenance records to determine whether the brake caliper piston O-
ring seals were replaced at the last annual or 100-hour inspection:
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Total cost per
Labor cost Parts cost airplane Total cost on U.S. operators
----------------------------------------------------------------------------------------------------------------
1 workhour x $80 = $80.......... Not applicable..... $80 2,135 x $80 = $170,800.
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We estimate the following costs to install any necessary O-ring
seals that would be required based on the results of this proposed
check of maintenance records. We have no way of determining the number
of airplanes that may need this seal installation:
------------------------------------------------------------------------
Total cost per
Labor cost Parts cost airplane
------------------------------------------------------------------------
4 work hours x $80 = $320............... $8 $328
------------------------------------------------------------------------
We estimate the following costs to replace any brake calipers on
Model SR20 airplanes, serial numbers (S/Ns) 1005 through 1194, that
would be required based on the results of this proposed check of
maintenance records. We have no way of determining the number of these
Model SR20 airplanes that may need to replace brake calipers:
------------------------------------------------------------------------
Total cost per
Labor cost Parts cost airplane
------------------------------------------------------------------------
12 workhours x $80 = $960............... $1,167 $2,127
------------------------------------------------------------------------
We estimate the following costs to replace any brake calipers on
Model SR20 airplanes, S/Ns 1195 through 1600, that would be required
based on the results of this proposed check of maintenance records. We
have no way of determining the number of these Model SR20 airplanes
that may need to replace brake calipers:
------------------------------------------------------------------------
Total cost per
Labor cost Parts cost airplane
------------------------------------------------------------------------
8 workhours x $80 = $640................ $1,167 $1,807
------------------------------------------------------------------------
We estimate the following costs to replace any brake calipers on
Model SR22 airplanes that would be required based on the results of
this proposed check of maintenance records. We have no way of
determining the number of Model SR22 airplanes that may need to replace
brake calipers:
------------------------------------------------------------------------
Total cost per
Labor cost Parts cost airplane
------------------------------------------------------------------------
5 workhours x $80 = $400................ $845 $1,245
------------------------------------------------------------------------
We estimate the following costs to do the proposed modification of
the MLG wheel fairings to add the temperature indicator sticker
inspection holes, trim the wheel fairings to prevent them from holding
fluids, and install the temperature indicator sticker on the brake
calipers:
[[Page 26709]]
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Total cost per
Labor cost Parts cost airplane Total cost on U.S. operators
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2 workhours x $80 = $160.......... $2 $162 2,135 x $162 = $345,870.
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The CDC has indicated that CDC will provide warranty credit as
stated in the service information for modifying the MLG wheel fairings
by adding the temperature indicator sticker inspection holes, trimming
the wheel fairings to prevent them from holding fluids, and installing
the temperature indicator sticker on the brake calipers.
We estimate the following costs to do the proposed insertion of
Revision A6 into the POH:
----------------------------------------------------------------------------------------------------------------
Total cost per Total cost on
Labor cost Parts cost airplane U.S. operators
----------------------------------------------------------------------------------------------------------------
1 workhour x $80.............................. Not applicable.................. $80 $170,800
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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 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.
For the reasons discussed above, I certify that the 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. 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 proposed AD. See the ADDRESSES section for a location
to examine the regulatory evaluation.
Examining the Dockets
You may examine the docket that contains the proposal, any comments
received and any final disposition on the Internet at http://dms.dot.gov, or in person at the DOT Docket Offices between 9 a.m. and
5 p.m., 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. Comments will be available in the AD docket
shortly after the Docket Management Facility receives them.
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:
Cirrus Design Corporation: Docket No. FAA-2006-24010; Directorate
Identifier 2006-CE-14-AD.
Comments Due Date
(a) We must receive comments on this airworthiness directive
(AD) action by July 10, 2006.
Affected ADs
(b) None.
Applicability
(c) This AD applies to the following airplane models and serial
numbers (S/N) that are certificated in any category:
(1) Group 1: Model SR20 Airplanes, S/N 1005 through 1600.
(2) Group 2: Model SR22 Airplanes, S/N 0002 through 1739.
(3) Group 3: Model SR20 Airplanes, S/N 1005 through 1592.
(4) Group 4: Model SR22 Airplanes, S/N 0002 through 1727.
Unsafe Condition
(d) This AD results from several reports of airplanes that
experienced brake fires and two airplanes that lost directional
control. The actions specified in this AD are intended to detect,
correct, and prevent overheating damage to the brake caliper piston
O-ring seals, which could result in leakage of brake hydraulic
fluid. Consequently, this could lead to the loss of braking with
loss of airplane directional control or brake fire.
Compliance
(e) To address this problem, you must do the following:
[[Page 26710]]
Table 1.--Actions/Compliance/Procedures
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Actions Compliance Procedures
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(1) For Group 1 and Group 2 Within 50 hours time- No special
Airplanes: Check the in-service (TIS) procedures
maintenance records to after the effective necessary to check
determine whether the brake date of this AD, the maintenance
caliper piston O-ring seals unless already done. records. The owner/
were replaced at the last operator holding at
annual or 100-hour least a private
inspection. pilot certificate
as authorized by
section 43.7 of the
Federal Aviation
Regulations (14 CFR
43.7) may make this
check. You must
make an entry into
the airplane
records that shows
compliance with
this portion of the
AD in accordance
with section 43.9
of the Federal
Aviation
Regulations (14 CFR
43.9).
(2) For Group 1 and Group 2 Before further For the replacement,
Airplanes: If you find as a flight after the brake maintenance
result of the check check required by procedures are
required by paragraph paragraph (e)(1) of included in Section
(e)(1) of this AD that this AD. 32-42 of the SR20
there is no record of the or SR22 Aircraft
replacement of brake Maintenance Manual.
caliper piston O-ring seals For the replacement
at the last annual or 100- of old brake
hour inspection, then do calipers with new
the following: brake calipers,
(i) Replace the O-ring seals follow Cirrus
with new O-ring seals; or Design Corporation
(ii) Replace old brake Service Bulletin SB
calipers with new brake 2X-32-13, Issued:
calipers. December 15, 2005.
(3) For Group 3 and Group 4 Do the modification Follow Cirrus Design
Airplanes: within 50 hours TIS Corporation Service
(i) Modify the main landing after the effective Bulletin SB 2X-32-
gear (MLG) wheel fairings date of this AD, 14 R1, Issued:
to add temperature unless already January 18, 2006,
indicator sticker done. Do the Revised: February
inspection holes and trim temperature 17, 2006.
the wheel fairings to indicator sticker
prevent them from holding installation within
fluids; and 50 hours TIS after
(ii) Install a temperature the effective date
indicator sticker on the of this AD, unless
brake calipers. already done, and
thereafter before
further flight
anytime you have
the o-ring seals
replaced due to
overheating of the
brake assembly
(temperature
indicator sticker
turned black).
(4) For all airplanes: Within 50 hours TIS The owner/operator
Insert the appropriate after the effective holding at least a
Revision A6 part number (P/ date of this AD, private pilot
N) into the Pilot's unless already done. certificate as
Operating Handbook (POH), authorized by
as presented in TABLE 2.-- section 43.7 of the
REVISION A6 TO THE PILOT'S Federal Aviation
OPERATING HANDBOOK, in Regulations (14 CFR
paragraph (f) of this AD.. 43.7) may insert
the information
into the POH as
specified in
paragraph (e)(4) of
this AD. Make an
entry into the
airplane
maintenance records
showing compliance
with this portion
of the AD in
accordance with
section 43.9 of the
Federal Aviation
Regulations (14 CFR
43.9).
(5) For Group 3 and Group 4 As of the effective Follow Cirrus Design
Airplanes: date of this AD. Corporation Service
(i) Do not install any MLG Bulletin SB 2X-32-
fairings without also doing 14 R1, Issued:
the modifications required January 18, 2006,
by paragraph (e)(3)(i) of Revised: February
this AD; and 17, 2006.
(ii) Do not replace any
brake calipers without also
installing the temperature
indicator sticker required
by paragraph (e)(3)(ii) of
this AD.
------------------------------------------------------------------------
(f) The following table specifies the POH Revision A6 part
number as required in paragraph (e)(4) of this AD:
Table 2.--Revision A6 to the Pilot's Operating Handbook
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Model SR20 or
Affected airplanes SR22 airplane POH Date FAA-approved
P/N
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(1) Model SR20, S/N 1148 through 1267.......... 11934-002 January 18, 2006.
(2) Model SR20, S/N 1005 through 1147 that have 11934-002 January 18, 2006.
the 3,000-pound gross weight modification
following Cirrus Design Corporation Service
Bulletin SB 20-01-00, Issued: February 25,
2003.
(3) SR20, S/N 1268 through 1739................ 11934-003 January 18, 2006.
(4) SR22, S/N 002 through 1739................. 13772-001 January 18, 2006.
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Alternative Methods of Compliance (AMOCs)
(g) The Manager, Chicago Aircraft Certification Office (ACO),
ATTN: Wess Rouse, Aerospace Engineer, FAA, ACE-117C, Chicago ACO,
2300 East Devon Avenue, Room 107, Des Plaines, Illinois 60018;
telephone: (847) 294-8113; facsimile: (847) 294-7834, has the
authority to approve alternative methods of compliance for this AD,
if requested using the procedures found in 14 CFR 39.19.
[[Page 26711]]
Related Information
(h) To get copies of the documents referenced in this AD,
contact Cirrus Design Corporation, 4515 Taylor Circle, Duluth,
Minnesota 55811; telephone: (218) 727-2737, or on the Internet at
http://www.cirrusdesign.com. To view the AD docket, go to the Docket
Management Facility; U.S. Department of Transportation, 400 Seventh
Street, SW., Nassif Building, Room PL-401, Washington, DC, or on the
Internet at http://dms.dot.gov. The docket number is Docket No. FAA-
2006-24010; Directorate Identifier 2006-CE-14-AD.
Issued in Kansas City, Missouri, on May 1, 2006.
Steven W. Thompson,
Acting Manager, Small Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E6-6905 Filed 5-5-06; 8:45 am]
BILLING CODE 4910-13-P