Federal Register, Volume 75, Number 98, May 21, 2010, Pages 28463-28750 Page: 28,482
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Federal Register/Vol. 75, No. 98/Friday, May 21, 2010/Rules and Regulations
More recently, similar issues were again
reported on aeroplanes with Crissair check
valves P/N 2S2794-1 installed. The
investigations carried out on those check
valves have shown that a spring, mounted
inside the valve, does not meet the Airbus
type design specifications.
This situation, if not corrected, can cause
hydraulic system functional degradation,
possibly resulting in reduced control of the
aeroplane when combined with an air duct
leak, air conditioning system contamination
or, if installed, malfunction of the fire
extinguishing system in the Class 'C' cargo
For the reasons described above, EASA
[European Aviation Safety Agency] AD 2008-
0166 was issued to require the inspection of
the Crissair check valves P/N 2S2794-1, to
identify serial numbers (s/n) and the
replacement of the affected ones with
Later on, further investigation by the
vendor Crissair revealed more suspect check
valves P/N 2S2794-1. Based on this, it was
concluded that EASA AD 2008-0166 did not
adequately address the unsafe condition and
also did not correctly identify the Functional
Item Numbers (FIN) of the various aeroplane
installations of the affected valves.
Consequently, EASA AD Cancellation Notice
No.: 2008-0166-CN was issued on 29
October 2008 to cancel EASA AD 2008-0166.
An updated list of suspect check valves
with P/N 2S2794-1 has now been issued by
Crissair Inc., the manufacturer.
Consequently, this EASA AD requires the
identification of the check valves by s/n and
the replacement of the affected ones with
Actions and Compliance
(f) Unless already done, do the following
(1) At the applicable compliance time
specified in Table 1 of this AD: For Crissair
check valves, P/N 2S2794-1, identify the
serial number using Appendix 1 of the
applicable service bulletin identified in Table
2 of this AD, in accordance with the
Accomplishment Instructions of the
applicable service bulletin identified in Table
2 of this AD. Except as provided by
paragraph (f)(2) of this AD, for any valve
having a serial number listed in Appendix 1
of the applicable service bulletin identified
in Table 2 of this AD, before further flight,
install a new or modified check valve in
accordance with the applicable service
bulletin identified in Table 2 of this AD.
TABLE 1-AFFECTED CHECK VALVE INSTALLATION
Affected check valve installation, identified by FIN (Functional Item Number) Compliance time
(i) Airplanes having Hydraulic System with FIN 29/1388, FIN 29/2388 and FIN 29/ Within 4 months after the effective date of this AD.
(ii) Cargo Compartment Fire Extinguishing System, equipped with Flow Metering Within 4 months after the effective date of this AD.
System (A310 and A300-600 airplanes having "post-Airbus modification
06403" only) FIN 26/0203.
(iii) Airplanes having Hydraulic System with FIN 29/1378, FIN 29/1382 and FIN Within 30 months after the effective date of this AD.
(iv) Hydraulic System (A300 airplanes having configuration 01 "pre-Airbus modi- Within 30 months after the effective date of this AD.
fication 03079" only) FIN 29/1381.
(2) Check valves P/N 2S2794-1 marked replaced. Check valves with P/N 2S2794 are a serial number other than those listed in
with an "R" have already been modified in not affected and do not need to be replaced. Appendix 1 of the applicable service bulletin
accordance with Crissair Service Bulletin (3) As of the effective date of this AD, no identified in Table 2 of this AD, or unless
20070407-29-1 and do not need to be person may install any Crissair check valve, check valve P/N 2S2794-1 is marked with an
P/N 2S2794-1, on any airplane unless it has "R."
TABLE 2-SERVICE INFORMATION
For Airbus Model- Use Airbus Mandatory Service Bulletin- Revision- Dated-
A300 airplanes ................................ A300-29-0124, including Appendices 1, 2, and 3 .........................02 March 10, 2009.
A300-600 airplanes ........................ A300-29-6060, including Appendices 1, 2, and 3 .........................01 March 10, 2009.
A310 airplanes ................................ A310-29-2097, including Appendices 1, 2, and 3 .........................01 March 19, 2009.
(4) Submit an inspection report of the
inspection required by paragraph (f)(1) of this
AD to Airbus Customer Services Directorate,
1 Rond Point Maurice Bellonte, 31707
Blagnac Cedex, France; telephone +33 5 61
93 33 33; fax +33 5 61 93 42 51; e-mail:
email@example.com; at the applicable
time specified in paragraph (f)(4)(i) or
(f)(4)(ii) of this AD. The report must include
the information specified on the inspection
report sheet provided in the applicable
service bulletin identified in Table 2 of this
(i) If the inspection was done on or after
the effective date of this AD: Submit the
report within 30 days after the inspection.
(ii) If the inspection was done before the
effective date of this AD: Submit the report
within 30 days after the effective date of this
FAA AD Differences
Note 1: This AD differs from the MCAI
and/or service information as follows:
Although the MCAI states not to install the
part identified in paragraph (f)(3) of this AD
after accomplishing the actions specified in
paragraph (f)(1) of this AD, this AD prohibits
installation of the part as of the effective date
of this AD.
Other FAA AD Provisions
(g) The following provisions also apply to
(1) Alternative Methods of Compliance
(AMOCs): The Manager, International
Branch, ANM-116, Transport Airplane
Directorate, 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: Dan Rodina,
Aerospace Engineer, International Branch,
ANM-116, Transport Airplane Directorate,
FAA, 1601 Lind Avenue, SW., Renton,
Washington 98057-3356; telephone (425)
227-2125; fax (425) 227-1149. Before using
any approved AMOC on any airplane to
which the AMOC applies, notify your
principal maintenance inspector (PMI) or
principal avionics inspector (PAI), as
appropriate, or lacking a principal inspector,
your local Flight Standards District Office.
The AMOC approval letter must specifically
reference this AD.
(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
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United States. Office of the Federal Register. Federal Register, Volume 75, Number 98, May 21, 2010, Pages 28463-28750, periodical, May 21, 2010; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc52679/m1/28/: accessed March 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.