[Federal Register Volume 75, Number 118 (Monday, June 21, 2010)]
[Proposed Rules]
[Pages 34953-34956]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2010-14986]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2010-0463; Directorate Identifier 2010-CE-021-AD]
RIN 2120-AA64
Airworthiness Directives; GA 8 Airvan (Pty) Ltd Models GA8 and
GA8-TC320 Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: We propose to adopt a new airworthiness directive (AD) for the
products listed above that would revise an existing AD. This proposed
AD results from mandatory continuing airworthiness information (MCAI)
originated by an aviation authority of another country to identify and
correct an unsafe condition on an aviation product. The MCAI describes
the unsafe condition as: Inspection of a high time
[[Page 34954]]
aircraft has revealed cracks in the Horizontal Stabilizer rear spar
splice plate and inboard main ribs around the area of the Horizontal
Stabilizer rear pivot attachment. Additionally, failure of some attach
bolts in service may be due to improper assembly. This amendment is
issued to include an applicability matrix (Table 1, page 2) in the
compliance section of the service bulletin for improved clarity. The
proposed AD would require actions that are intended to address the
unsafe condition described in the MCAI.
DATES: We must receive comments on this proposed AD by August 5, 2010.
ADDRESSES: You may send comments by any of the following methods:
Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
Fax: (202) 493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue, SE., Washington, DC 20590.
Hand Delivery: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays.
Examining the AD Docket
You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at the Docket Management Facility
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The AD docket contains this proposed AD, the regulatory
evaluation, any comments received, and other information. The street
address for the Docket Office (telephone (800) 647-5527) is in the
ADDRESSES section. Comments will be available in the AD docket shortly
after receipt.
FOR FURTHER INFORMATION CONTACT: Doug Rudolph, Aerospace Engineer, FAA,
Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri
64106; telephone: (816) 329-4059; fax: (816) 329-4090.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written relevant data, views, or
arguments about this proposed AD. Send your comments to an address
listed under the ADDRESSES section. Include ``Docket No. FAA-2010-0463;
Directorate Identifier 2010-CE-021-AD'' at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of this proposed AD. We
will consider all comments received by the closing date and may amend
this proposed AD because of those comments.
We will post all comments we receive, without change, to http://regulations.gov, including any personal information you provide. We
will also post a report summarizing each substantive verbal contact we
receive about this proposed AD.
Discussion
On April 20, 2010, we issued AD 2010-10-01, Amendment 39-16280 (75
FR 23577, May 4, 2010). That AD required actions intended to address an
unsafe condition on the products listed above.
Since we issued AD 2010-10-01, the foreign authority has issued an
amendment to include an applicability matrix in the compliance section
of the manufacturer's service bulletin for improved clarity. The FAA is
proposing to revise this AD to allow the use of issue 6 or issue 5 of
the service bulletin. An operator would be in compliance if the
operator chose to only accomplish issue 5 of the SB. This proposed
revision of the FAA's AD will make the FAA AD more in line with the
latest version of the received MCAI.
The Civil Aviation Safety Authority (CASA), which is the aviation
authority for Australia, has issued AD/GA8/5, Amdt 4, dated May 11,
2010 (referred to after this as ``the MCAI''), to correct an unsafe
condition for the specified products. The MCAI states:
Inspection of a high time aircraft has revealed cracks in the
Horizontal Stabilizer rear spar splice plate and inboard main ribs
around the area of the Horizontal Stabilizer rear pivot attachment.
Additionally, failure of some attach bolts in service may be due to
improper assembly.
This amendment is issued to include an applicability matrix
(Table 1, page 2) in the compliance section of the service bulletin
for improved clarity.
The previous amendment included reference to the GA8-TC 320
variant in the applicability section.
Amendment 2 was issued because the requirement document now
contains an inspection for cracking in horizontal stabilizers which
have load transferring fittings installed.
Previous amendments of this AD listed the AD requirements in
full. Due to the extensive use of diagrams and photographs, it is no
longer appropriate or practical to write the requirements of the
service bulletin out in full in this AD. All requirements,
accomplishment instructions and illustrations are contained in the
service bulletin.
You may obtain further information by examining the MCAI in the AD
docket.
Relevant Service Information
Gippsland Aeronautics has issued Mandatory Service Bulletin SB-GA8-
2002-02, Issue 6, dated April 21, 2010. The actions described in this
service information are intended to correct the unsafe condition
identified in the MCAI.
FAA's Determination and Requirements of the Proposed AD
This product has been approved by the aviation authority of another
country, and is approved for operation in the United States. Pursuant
to our bilateral agreement with this State of Design Authority, they
have notified us of the unsafe condition described in the MCAI and
service information referenced above. We are proposing this AD because
we evaluated all information and determined the unsafe condition exists
and is likely to exist or develop on other products of the same type
design.
Differences Between This Proposed AD and the MCAI or Service
Information
We have reviewed the MCAI and related service information and, in
general, agree with their substance. But we might have found it
necessary to use different words from those in the MCAI to ensure the
AD is clear for U.S. operators and is enforceable. In making these
changes, we do not intend to differ substantively from the information
provided in the MCAI and related service information.
We might also have proposed different actions in this AD from those
in the MCAI in order to follow FAA policies. Any such differences are
highlighted in a Note within the proposed AD.
Costs of Compliance
We estimate that this proposed AD will affect 25 products of U.S.
registry. We also estimate that it would take about 1 work-hour per
product to comply with the basic requirements of this proposed AD. The
average labor rate is $85 per work-hour. Required parts would cost
about $0 per product.
Based on these figures, we estimate the cost of the proposed AD on
U.S. operators to be $2,125, or $85 per product.
In addition, we estimate that any necessary follow-on actions would
take about 5 work-hours and require parts costing $200, for a cost of
$625 per product. We have no way of determining the number of products
that may need these actions.
[[Page 34955]]
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 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 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. 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 and placed it in the AD docket.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA 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 Amendment 39-16280 (75 FR
23577, May 4, 2010), and adding the following new AD:
GA 8 Airvan (Pty) Ltd.: Docket No. FAA-2010-0463; Directorate
Identifier 2010-CE-021-AD.
Comments Due Date
(a) We must receive comments by August 5, 2010.
Affected ADs
(b) This AD revises AD 2010-10-01, Amendment 39-16280.
Applicability
(c) This AD applies to the following model and serial number
airplanes, certificated in any category:
(1) Group 1 Airplanes (retains the actions and applicability
from AD 2009-05-01): Model GA8 airplanes, serial numbers GA8-00-004
and up; and
(2) Group 2 Airplanes: Model GA8-TC320 airplanes, all serial
numbers.
Subject
(d) Air Transport Association of America (ATA) Code 55:
Stabilizers.
Reason
(e) The mandatory continuing airworthiness information (MCAI)
states:
Inspection of a high time aircraft has revealed cracks in the
Horizontal Stabiliser rear spar splice plate and inboard main ribs
around the area of the Horizontal Stabiliser rear pivot attachment.
Additionally, failure of some attach bolts in service may be due to
improper assembly.
This amendment is issued to include an applicability matrix
(Table 1, page 2) in the compliance section of the service bulletin
for improved clarity.
The previous amendment included reference to the GA8-TC 320
variant in the applicability section.
Amendment 2 was issued because the requirement document now
contains an inspection for cracking in horizontal stabilisers which
have load transferring fittings installed.
Previous amendments of this AD listed the AD requirements in
full. Due to the extensive use of diagrams and photographs, it is no
longer appropriate or practical to write the requirements of the
service bulletin out in full in this AD. All requirements,
accomplishment instructions and illustrations are contained in the
service bulletin.
The FAA is revising AD 2010-10-01 to allow the use of issue 6 or
issue 5 of the service bulletin. An operator is in compliance if the
operator chooses to only accomplish issue 5 of the SB. This proposed
revision of the FAA's AD will make the FAA AD more consistent with
the latest version of the MCAI.
Actions and Compliance
(f) For Group 1 Airplanes: Unless already done, do the following
actions:
(1) Within the next 10 hours time-in-service (TIS) after March
2, 2009 (the effective date retained from AD 2009-05-01):
(i) For all aircraft not incorporating computer numeric control
(CNC) machined elevator hinges, inspect and repair the left and
right horizontal stabilizer rear pivot attachment installation
following instruction ``3. Rear Pivot Attachment Inspection,'' of
Gippsland Aeronautics Mandatory Service Bulletin SB-GA8-2002-02,
Issue 5, dated November 13, 2008; or Gippsland Aeronautics Mandatory
Service Bulletin SB-GA8-2002-02, Issue 6, dated April 21, 2010; and,
(ii) For all aircraft, inspect the left and right rear attach
bolt mating surfaces for damage or an out of square condition and
replace the left and right rear attach bolts following instruction
``5. Rear Attach Bolt Replacement,'' of Gippsland Aeronautics
Mandatory Service Bulletin SB-GA8-2002-02, Issue 5, dated November
13, 2008; or Gippsland Aeronautics Mandatory Service Bulletin SB-
GA8-2002-02, Issue 6, dated April 21, 2010. Reworking the mating
surfaces by spotfacing is no longer acceptable. If the mating
surfaces are damaged, not square, or were previously reworked by
spotfacing the surface, replace the parts as specified in Gippsland
Aeronautics Mandatory Service Bulletin SB-GA8-2002-02, Issue 5,
dated November 13, 2008; or Gippsland Aeronautics Mandatory Service
Bulletin SB-GA8-2002-02, Issue 6, dated April 21, 2010.
(2) Within the next 10 hours TIS after March 2, 2009 (the
effective date retained from AD 2009-05-01) and repetitively
thereafter at intervals not to exceed 100 hours TIS or 12 months,
whichever occurs first, for all aircraft:
(i) Inspect the horizontal stabilizer externally following
instruction ``2. External Inspection (Lower flange, Stabilizer rear
spar),'' of Gippsland Aeronautics Mandatory Service Bulletin SB-GA8-
2002-02, Issue 5, dated November 13, 2008; or Gippsland Aeronautics
Mandatory Service Bulletin SB-GA8-2002-02, Issue 6, dated April 21,
2010; and
(ii) Inspect the horizontal stabilizer internally following
instruction ``4. Internal Inspection,'' of Gippsland Aeronautics
Mandatory Service Bulletin SB-GA8-2002-02, Issue 5, dated November
13, 2008; or Gippsland Aeronautics Mandatory Service Bulletin SB-
GA8-2002-02, Issue 6, dated April 21, 2010.
(3) If during the inspection required by paragraph (f)(2) of
this AD any excessive local deflection or movement of the lower skin
surrounding the lower pivot attachment, cracking, or working (loose)
rivet is found, before further flight, obtain an FAA-approved repair
scheme from the manufacturer and incorporate this repair scheme. Due
to FAA policy, the repair scheme/modification for crack damage must
include an immediate repair of the crack. The repair scheme cannot
be by repetitive inspection only. The repair scheme/modification may
incorporate repetitive inspections in addition to the repetitive
inspections required in paragraph (f)(2) of this AD. Continued
operational flight with un-repaired crack damage is not permitted.
[[Page 34956]]
(g) For Group 2 Airplanes: Unless already done, do the following
actions:
(1) Within the next 10 hours TIS after May 10, 2010 (the
effective date retained from AD 2010-10-01):
(i) For all aircraft not incorporating computer numeric control
(CNC) machined elevator hinges, inspect and repair the left and
right horizontal stabilizer rear pivot attachment installation
following instruction ``3. Rear Pivot Attachment Inspection,'' of
Gippsland Aeronautics Mandatory Service Bulletin SB-GA8-2002-02,
Issue 5, dated November 13, 2008; or Gippsland Aeronautics Mandatory
Service Bulletin SB-GA8-2002-02, Issue 6, dated April 21, 2010; and,
(ii) For all aircraft, inspect the left and right rear attach
bolt mating surfaces for damage or an out of square condition and
replace the left and right rear attach bolts following instruction
``5. Rear Attach Bolt Replacement,'' of Gippsland Aeronautics
Mandatory Service Bulletin SB-GA8-2002-02, Issue 5, dated November
13, 2008; or Gippsland Aeronautics Mandatory Service Bulletin SB-
GA8-2002-02, Issue 6, dated April 21, 2010. Reworking the mating
surfaces by spotfacing is no longer acceptable. If the mating
surfaces are damaged, not square, or were previously reworked by
spotfacing the surface, before further flight, replace the parts as
specified in Gippsland Aeronautics Mandatory Service Bulletin SB-
GA8-2002-02, Issue 5, dated November 13, 2008; or Gippsland
Aeronautics Mandatory Service Bulletin SB-GA8-2002-02, Issue 6,
dated April 21, 2010.
(2) Within the next 10 hours TIS after May 10, 2010 (the
effective date retained from AD 2010-10-01) and repetitively
thereafter at intervals not to exceed 100 hours TIS or 12 months,
whichever occurs first, for all aircraft:
(i) Inspect the horizontal stabilizer externally following
instruction ``2. External Inspection (Lower flange, Stabilizer rear
spar),'' of Gippsland Aeronautics Mandatory Service Bulletin SB-GA8-
2002-02, Issue 5, dated November 13, 2008; or Gippsland Aeronautics
Mandatory Service Bulletin SB-GA8-2002-02, Issue 6, dated April 21,
2010; and
(ii) Inspect the horizontal stabilizer internally following
instruction ``4. Internal Inspection,'' of Gippsland Aeronautics
Mandatory Service Bulletin SB-GA8-2002-02, Issue 5, dated November
13, 2008; or Gippsland Aeronautics Mandatory Service Bulletin SB-
GA8-2002-02, Issue 6, dated April 21, 2010.
(3) If during the inspection required by paragraph (g)(2) of
this AD any excessive local deflection or movement of the lower skin
surrounding the lower pivot attachment, cracking, or working (loose)
rivet is found, before further flight, obtain an FAA-approved repair
scheme from the manufacturer and incorporate this repair scheme. Due
to FAA policy, the repair scheme/modification for crack damage must
include an immediate repair of the crack. The repair scheme cannot
be by repetitive inspection only. The repair scheme/modification may
incorporate repetitive inspections in addition to the repetitive
inspections required in paragraph (g)(2) of this AD. Continued
operational flight with un-repaired crack damage is not permitted.
FAA AD Differences
Note: This AD differs from the MCAI and/or service information
as follows:
(1) ``Requirement: 1. Daily Inspection (Stabilizer attach
bolt)'' of the service information requires a daily inspection of
the stabilizer attach bolt. The daily inspection is not a
requirement of this AD. Instead of the daily inspection, we require
you to perform, within 10 hours TIS, ``Requirement 3. Rear Pivot
Attachment Inspection'' and ``Requirement 5. Rear Attachment Bolt
Replacement'' of the service information. Compliance with
requirement 3. and 5. is a terminating action for the daily
inspection, and we are requiring these within 10 hours TIS after the
effective date of AD 2009-05-01 for Group 1 airplanes and AD 2010-
10-01 for Group 2 airplanes.
(2) ``Requirement: 2. External Inspection (Lower flange,
Stabilizer rear spar)'' of the service information does not specify
any action if excessive local deflection or movement of lower skin,
cracking, or working (loose) rivet is found. We require obtaining
and incorporating an FAA-approved repair scheme from the
manufacturer before further flight.
(3) The MCAI does not state if further flight with known cracks
is allowed. FAA policy is to not allow further flight with known
cracks in critical structure. We require that if any cracks are
found when accomplishing the inspection required in paragraphs
(f)(2) and (g)(2) of this AD, you must repair the cracks before
further flight.
(4) The service information does not state that parts with
spotfaced nut and bolt mating surfaces require replacement. However,
the service information no longer allows reworking of the mating
surfaces by spotfacing. We require that if any nut and bolt surfaces
were previously reworked by spotfacing, you must replace the parts.
Other FAA AD Provisions
(h) The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager,
Standards Office, FAA, has the authority to approve AMOCs for this
AD, if requested using the procedures found in 14 CFR 39.19. Send
information to Attn: Doug Rudolph, Aerospace Engineer, FAA, Small
Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri
64106; telephone: (816) 329-4059; fax: (816) 329-4090. 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.
(2) Airworthy Product: For any requirement in this AD to obtain
corrective actions from a manufacturer or other source, use these
actions if they are FAA-approved. Corrective actions are considered
FAA-approved if they are approved by the State of Design Authority
(or their delegated agent). You are required to assure the product
is airworthy before it is returned to service.
(3) Reporting Requirements: For any reporting requirement in
this AD, under the provisions of the Paperwork Reduction Act (44
U.S.C. 3501 et seq.), the Office of Management and Budget (OMB) has
approved the information collection requirements and has assigned
OMB Control Number 2120-0056.
Related Information
(i) Refer to MCAI Civil Aviation Safety Authority AD No. AD/GA8/
5, Amdt 4, dated May 11, 2010; Gippsland Aeronautics Mandatory
Service Bulletin SB-GA8-2002-02, Issue 5, dated November 13, 2008;
and Gippsland Aeronautics Mandatory Service Bulletin SB-GA8-2002-02,
Issue 6, dated April 21, 2010, for related information.
Issued in Kansas City, Missouri, on June 14, 2010.
Sandra J. Campbell,
Acting Manager, Small Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2010-14986 Filed 6-18-10; 8:45 am]
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