EFFECTIVE DATE
(a) This airworthiness directive (AD) is effective April 8, 2010.
AFFECTED ADS
(b) None.
APPLICABILITY
(c) This AD applies to Bombardier, Inc. Model DHC-8-101, DHC-8-102,
DHC-8-103, DHC-8-106, DHC-8-201, DHC-8-202, DHC-8-301, DHC-8-311, and
DHC-8-315 airplanes, certificated in any category; serial numbers 003
and subsequent.
SUBJECT
(d) Air Transport Association (ATA) of America Codes 32: Landing Gear, 51:
Standard Practices/Structures; 52: Doors; 53: Fuselage; 54:
Nacelles/Pylons; 55: Stabilizers; and 57: Wings.
UNSAFE CONDITION
(e) This AD results from the determination that, as airplanes age, they
are more likely to exhibit indications of corrosion. We are issuing
this AD to prevent structural failure of the airplane due to
corrosion.
COMPLIANCE
(f) You are responsible for having the actions required by this AD
performed within the compliance times specified, unless the actions
have already been done.
MANUAL REFERENCES
(g) This AD refers to the manuals listed in Table 1 of this AD.
TABLE 1--APPLICABLE MANUALS
______________________________________________________________________
BOMBARDIER MODEL MANUAL
______________________________________________________________________
(1) DHC-8-101, -102, -103, Part 1, Section 3, Structural
and -106 airplanes Inspection Program, of the
Bombardier de Havilland Dash 8
Maintenance Program Maintenance
Review Board Report Dash 8 Series
100 Program Support Manual (PSM)
1-8-7, Revision 22, dated November
1, 2008.
(2) DHC-8-201 and DHC-8-202 Part 1, Section 3, Structural
airplanes Inspection Program, of the
Bombardier de Havilland Dash 8
Maintenance Program Maintenance
Review Board Report Dash 8 Series
200 PSM 1-82-7, Revision 13, dated
November 1, 2008.
(3) Model DHC-8-301, DHC-8-311, Part 1, Section 3, Structural
and DHC-8-315 airplanes Inspection Program, of the
Bombardier de Havilland Dash 8
Maintenance Program Maintenance
Review Board Report Dash 8 Series
300, PSM 1-83-7, Revision 22,
dated November 1, 2008.
______________________________________________________________________
INSPECTIONS
(h) At the later of the times specified in paragraphs (h)(1) and (h)(2) of
this AD, do each of the Environmental Damage/Corrosion Protection and
Control Program (ED/CPCP) inspections identified with both "ED" and
"CPCP," or with only "ED," including re-protection tasks, as
applicable, which are found in the "Type of Damage" column of the
applicable manual found in Table 1 of this AD, in accordance with the
applicable manual identified in Table 1 of this AD. Except as provided
by paragraph (i) of this AD, repeat each task thereafter at intervals
not to exceed the compliance time specified in the "Repeat" column of
the applicable manual identified in Table 1 of this AD.
(1) Within 24 months after the effective date of this AD.
(2) At the compliance time specified in the "Threshold" column of the
applicable manual identified in Table 1 of this AD since the date of
issuance of the original Canadian airworthiness certificate or the
date of issuance of the original Canadian export certificate of
airworthiness. If there is no value in the "Threshold" column, use the
time specified in the "Repeat" column.
(i) After accomplishment of each initial ED/CPCP and ED task required by
paragraph (h) of this AD, the FAA may approve the incorporation into
the operator's approved maintenance/inspection program of the CPCP
specified in the applicable manual identified in Table 1 of this AD;
or the equivalent program that is approved in accordance with this AD.
In all cases, the initial corrosion task for each airplane area must
be completed by the initial compliance time specified in paragraph (h)
of this AD.
(1) Any operator complying with paragraph (i) of this AD may use an
alternative recordkeeping method to that otherwise required by section
91.417 ("Maintenance records") or section 121.380 ("Maintenance
recording requirements") of the Federal Aviation Regulations (14 CFR
91.417 or 14 CFR 121.380, respectively) for the actions required by
this AD, provided that the recordkeeping method is approved by the FAA
and is included in a revision to the maintenance/inspection program.
For the purposes of this paragraph, "the FAA" is defined as the
cognizant Principal Maintenance Inspector (PMI) for operators that are
assigned a PMI (i.e., part 121, 125, and 135 operators), and the
cognizant Flight Standards District Office for other operators (i.e.,
part 91 operators).
(2) After the initial accomplishment of the ED/CPCP and ED tasks required
by paragraph (h) of this AD, any extension of the repetitive intervals
specified in the manual must be approved by the Manager, New York
Aircraft Certification Office (ACO), FAA.
CORRECTIVE ACTIONS
(j) If any corrosion is found during accomplishment of any action required
by paragraph (h) of this AD: Before further flight, rework, repair, or
replace, as applicable, in accordance with a method approved by either
the Manager, New York ACO, FAA; or Transport Canada Civil Aviation
(TCCA) (or its delegated agent).
REPORTING REQUIREMENTS FOR LEVEL 3 CORROSION FINDINGS
(k) If any Level 3 corrosion, as defined in Part 1 of the Bombardier (de
Havilland) DHC-6 Twin Otter, Dash 7 & Dash 8 Corrosion Prevention and
Control Manual, PSM 1-GEN-5, Revision 3, dated November 30, 1998, is
found during the accomplishment of any action required by this AD, do
paragraphs (k)(1), (k)(2), and (k)(3) of 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.
(1) Within 3 days after the finding of Level 3 corrosion, report findings
to the Manager, New York ACO, FAA, in accordance with the Bombardier
(de Havilland) DHC-6 Twin Otter, Dash 7 & Dash 8 Corrosion Prevention
and Control Manual, PSM 1-GEN-5, Revision 3, dated November 30, 1998.
(2) Within 10 days after the finding of Level 3 corrosion, either submit a
plan to the FAA to identify a schedule for accomplishing the
applicable CPCP task on the remainder of the airplanes in the
operator's fleet that are subject to this AD, or provide data
substantiating that the Level 3 corrosion that was found is an
isolated case. The FAA may impose a schedule other than that proposed
in the plan upon finding that a change to the schedule is needed to
ensure that any other Level 3 corrosion is detected in a timely
manner. For the purposes of this paragraph, "the FAA" is defined as
the cognizant Principal Maintenance Inspector (PMI) for operators that
are assigned a PMI (i.e., part 121, 125, and 135 operators), and the
cognizant Flight Standards District Office for other operators (i.e.,
part 91 operators).
(3) Within the time schedule approved in accordance with paragraph (k)(2)
of this AD, accomplish the applicable task on the remainder of the
airplanes in the operator's fleet that are subject to this AD.
LIMITING FUTURE CORROSION FINDINGS
(l) If corrosion findings that exceed Level 1 are found in any area during
any repeat of any CPCP task after the initial accomplishment required
by paragraph (h) of this AD: Within 60 days after such finding,
implement a means approved by the FAA to reduce future findings of
corrosion in that area to Level 1 or better. For the purposes of this
paragraph, "the FAA" is defined as the cognizant PMI for operators
that are assigned a PMI (i.e., part 121, 125, and 135 operators), and
the cognizant Flight Standards District Office for other operators
(i.e., part 91 operators).
SCHEDULING CORROSION TASKS FOR TRANSFERRED AIRPLANES
(m) Before any airplane subject to this AD is transferred and placed into
service by an operator: Establish a schedule for accomplishing the
CPCP tasks required by this AD in accordance with paragraph (m)(1) or
(m)(2) of this AD, as applicable.
(1) For airplanes on which the CPCP tasks required by this AD have been
accomplished previously at the schedule established by this AD:
Perform the first CPCP task in each area in accordance with the
previous operator's schedule, or in accordance with the new operator's
schedule, whichever results in an earlier accomplishment of that CPCP
task. After the initial accomplishment of each CPCP task in each area
as required by this paragraph, repeat each CPCP task in accordance
with the new operator's schedule.
(2) For airplanes on which the CPCP tasks required by this AD have not
been accomplished previously, or have not been accomplished at the
schedule established by this AD: The new operator must perform each
initial CPCP task in each area before further flight or in accordance
with a schedule approved by the FAA. For the purposes of this
paragraph, "the FAA" is defined as the cognizant Principal Maintenance
Inspector (PMI) for operators that are assigned a PMI (i.e., part 121,
125, and 135 operators), and the cognizant Flight Standards District
Office for other operators (i.e., part 91 operators).
ALTERNATIVE METHODS OF COMPLIANCE (AMOCS)
(n)(1) The Manager, New York ACO, ANE-170, 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: Program Manager,
Continuing Operational Safety, FAA, New York ACO, 1600 Stewart
Avenue, Suite 410, Westbury, New York 11590; telephone 516-228
-7300; fax 516-794-5531.
(2) To request a different method of compliance or a different compliance
time for this AD, follow the procedures in 14 CFR 39.19. 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.
RELATED INFORMATION
(o) Canadian airworthiness directive CF-2007-06, dated April 10, 2007,
also addresses the subject of this AD.
MATERIAL INCORPORATED BY REFERENCE
(p) You must use the service information contained in Table 2 of this AD,
as applicable, to do the actions required by this AD, unless the AD
specifies otherwise.
TABLE 2--MATERIAL INCORPORATED BY REFERENCE
______________________________________________________________________
DOCUMENT REVISION DATE
______________________________________________________________________
Part 1, Section 3, Structural 22 November 1, 2008
Inspection Program, of the
Bombardier de Havilland Dash
8 Maintenance Program
Maintenance Review Board
Report Dash 8 Series 100
Program Support Manual (PSM)
1-8-7
Part 1, Section 3, Structural 13 November 1, 2008
Inspection Program, of the
Bombardier de Havilland Dash
8 Maintenance Program
Maintenance Review Board
Report Series 200 PSM 1-82-7
Part 1, Section 3, Structural 22 November 1, 2008
Inspection Program, of the
Bombardier de Havilland Dash
8 Maintenance Program
Maintenance Review Board
Report Dash 8 Series 300,
PSM 1-83-7
Bombardier (de Havilland) 3 November 30, 1998
DHC-6 Twin Otter, Dash 7 &
Dash 8 Corrosion Prevention
and Control Manual, PSM
1-GEN-5
______________________________________________________________________
Bombardier de Havilland Dash 8 Maintenance Program Maintenance Review
Board Report Dash 8 Series 100 PSM 1-8-7, Revision 22, dated November 1,
2008, contains the following effective pages:
LIST OF EFFECTIVE PAGES
______________________________________________________________________
PAGE PAGE REVISION DATE SHOWN
TITLE/DESCRIPTION NUMBER(S) NUMBER ON PAGE(S)
______________________________________________________________________
Title Page None shown 22 November 1, 2008
List of Effective 1-4 None shown* November 1, 2008
Pages
Log of Revisions 1-18 None shown* November 1, 2008
Record of Revisions 1-2 22 November 1, 2008
Contents 1-4 None shown* November 1, 2008
Section 3
Subject 3-0 1-4 None shown* November 1, 2008
Subject 3-32 1-2 None shown* November 1, 2008
Subject 3-52 1-2 None shown* November 1, 2008
Subject 3-53 1-16 None shown* November 1, 2008
Subject 3-54 1-4 None shown* November 1, 2008
Subject 3-55 1-8 None shown* November 1, 2008
Subject 3-57 1-12 None shown* November 1, 2008
______________________________________________________________________
Bombardier de Havilland Dash 8 Maintenance Program Maintenance Review
Board Report Dash 8 Series 200 PSM 1-82-7, Revision 13, dated November 1,
2008, contains the following effective pages:
LIST OF EFFECTIVE PAGES
______________________________________________________________________
PAGE PAGE REVISION DATE SHOWN
TITLE/DESCRIPTION NUMBER(S) NUMBER ON PAGE(S)
______________________________________________________________________
Title Page None shown 13 November 1, 2008
List of Effective 1-4 None shown* November 1, 2008
Pages
Log of Revisions 1-8 None shown* November 1, 2008
Record of Revisions 1-2 13 November 1, 2008
Contents 1-4 None shown* November 1, 2008
Section 3
Subject 3-0 1-4 None shown* November 1, 2008
Subject 3-32 1-2 None shown* November 1, 2008
Subject 3-52 1-2 None shown* November 1, 2008
Subject 3-53 1-16 None shown* November 1, 2008
Subject 3-54 1-4 None shown* November 1, 2008
Subject 3-55 1-6 None shown* November 1, 2008
Subject 3-57 1-12 None shown* November 1, 2008
______________________________________________________________________
Bombardier de Havilland Dash 8 Maintenance Program Maintenance Review
Board Report Dash 8 Series 300 PSM 1-83-7, Revision 22, dated November 1,
2008, contains the following effective pages:
LIST OF EFFECTIVE PAGES
______________________________________________________________________
PAGE PAGE REVISION DATE SHOWN
TITLE/DESCRIPTION NUMBER(S) NUMBER ON PAGE(S)
______________________________________________________________________
Title Page None shown 22 November 1, 2008
List of Effective 1-4 None shown* November 1, 2008
Pages
Log of Revisions 1-18 None shown* November 1, 2008
Record of Revisions 1-2 22 November 1, 2008
Contents 1-4 None shown* November 1, 2008
Section 3
Subject 3-0 1-4 None shown* November 1, 2008
Subject 3-32 1-2 None shown* November 1, 2008
Subject 3-52 1-2 None shown* November 1, 2008
Subject 3-53 1-18 None shown* November 1, 2008
Subject 3-54 1-4 None shown* November 1, 2008
Subject 3-55 1-8 None shown* November 1, 2008
Subject 3-57 1-12 None shown* November 1, 2008
______________________________________________________________________
(*Only the title page and Record of Revisions of these documents specify
the revision level of these documents.)
Bombardier (de Havilland) DHC-6 Twin Otter, Dash 7 & Dash 8 Corrosion
Prevention and Control Manual PSM 1-GEN-5, Part 1, Revision 3, dated
November 30, 1998, contains the following effective pages:
LIST OF EFFECTIVE PAGES
______________________________________________________________________
PAGE PAGE REVISION DATE SHOWN
TITLE/DESCRIPTION NUMBER(S) NUMBER ON PAGE(S)
______________________________________________________________________
Title Page None shown None shown* November 8, 1993
Record of Revisions 1 3 August 27, 1991
2 None shown* August 27, 1991
Part 1 List of 1–2 None shown* November 30, 1998
Effective Pages
Part 1 Table of 1–4 None shown* November 8, 1993
Contents
Part 1 List of 1–2 None shown* November 8, 1993
Illustrations
Part 1 List of Tables 1 None shown* November 8, 1993
2 None shown* August 27, 1991
Introduction 1–2 None shown* November 8, 1993
3–4 None shown* November 5, 1992
Chapter 1 1–1 through None shown* November 8, 1993
1–10
Chapter 2 2–1 through None shown* November 8, 1993
2–6
Chapter 3 3–1 through None shown* November 8, 1993
3–4
Chapter 4 4–1 through None shown* November 8, 1993
4–44
Chapter 5 5–1 through None shown* November 8, 1993
5–48
Chapter 6 6–1 through None shown* August 27, 1991
6–8, 6–11
through 6–16
6–9 None shown* November 8, 1993
6–10 None shown* November 5, 1992
Chapter 7 7–1 through None shown* November 8, 1993
7–2
Chapter 8 8–1 through None shown* November 8, 1993
8–4
Chapter 9 9–1 through None shown* November 30, 1998
9–4
______________________________________________________________________
(*Only page 1 of the Record of Revisions of Bombardier (de Havilland) DHC
-6 Twin Otter, Dash 7 & Dash 8 Corrosion Prevention and Control Manual PSM
1-GEN-5, Part 1, Revision 3, contains the revision level of this
document.)
(1) The Director of the Federal Register approved the incorporation by
reference of this service information under 5 U.S.C. 552(a) and 1 CFR
part 51.
(2) For service information identified in this AD, contact Bombardier,
Inc., 400 Cote-Vertu Road West, Dorval, Quebec H4S 1Y9, Canada;
telephone 514-855-5000; fax 514-855-7401; e-mail
thd.qseries@aero.bombardier.com; Internet http://www.bombardier.com.
(3) You may review copies of the service information at the FAA, Transport
Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington. For
information on the availability of this material at the FAA, call 425
-227-1221 or 425-227-1152.
(4) You may also review copies of the service information that is
incorporated by reference at the National Archives and Records
Administration (NARA). For information on the availability of this
material at NARA, call 202-741-6030, or go to:
http://www.archives.gov/federal_register/code_of_federal_regulations/i
br_locations.html.
Issued in Renton, Washington, on February 11, 2010. Ali Bahrami, Manager,
Transport Airplane Directorate, Aircraft Certification Service.
FOR FURTHER INFORMATION CONTACT: Craig Yates, Aerospace Engineer, Airframe
and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft
Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, New York
11590; telephone (516) 228-7355; fax (516) 794-5531.