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ADs updated daily at www.Tdata.com
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| 2020-04-20 |
DE HAVILLAND AIRCRAFT OF CANADA LIMITED (TYPE CERTIFICATE
PREVIOUSLY HELD BY BOMBARDIER, INC.): Amendment 39-19857; Docket No. FAA-2019-0726; Product Identifier 2019-NM-102-AD. |
(a) EFFECTIVE DATE
This AD is effective May 4, 2020.
(b) AFFECTED ADS
None.
(c) APPLICABILITY
This AD applies to De Havilland Aircraft of Canada Limited Model DHC-8
-400, -401, and -402 airplanes, certificated in any category, manufac-
turer serial numbers 4001, 4003, and subsequent.
(d) SUBJECT
Air Transport Association (ATA) of America Code 28, Fuel.
(e) REASON
This AD was prompted by reports of wear on fuel couplings, bonding
springs, and sleeves as well as fuel tube end ferrules and fuel
component end ferrules. The FAA is issuing this AD to address such
wear, which could reduce the integrity of the electrical bonding paths
through the fuel line and components, and ultimately lead to fuel tank
ignition in the event of a lightning strike.
(f) COMPLIANCE
Comply with this AD within the compliance times specified, unless al-
ready done.
(g) INITIAL INSPECTION COMPLIANCE TIMES
For airplanes having serial numbers 4001 and 4003 through 4575 inclu-
sive that, as of the effective date of this AD, have not done the
actions specified in Bombardier Service Bulletin 84-28-21: At the
applicable times specified in paragraph (g)(1) or (2) of this AD, do
the actions specified in paragraphs (h)(1) and (2) of this AD.
(1) For all airplanes except those identified in paragraph (g)(2) of this
AD: Within 6,000 flight hours or 36 months, whichever occurs first
after the effective date of this AD.
(2) For airplanes with an original airworthiness certificate or original
export certificate of airworthiness issued on or after the effective
date of this AD: Within 6,000 flight hours or 36 months, whichever
occurs first after the date of issuance of the original airworthiness
certificate or the date of issuance of the original export certificate
of airworthiness.
(h) REPETITIVE INSPECTIONS AND CORRECTIVE ACTIONS
For airplanes having serial numbers 4001 and 4003 through 4575 inclu-
sive that, as of the effective date of this AD, have not done the
actions specified in Bombardier Service Bulletin 84-28-21: At the
applicable times specified in paragraph (g)(1) or (2) of this AD, do
the actions specified in paragraphs (h)(1) and (2) of this AD. Repeat
the actions thereafter at intervals not to exceed 6,000 flight hours
or 36 months, whichever occurs first.
(1) Do a detailed inspection of the clamshell coupling bonding wires, fuel
couplings, and associated sleeves for discrepancies that meet
specified criteria, as identified in, and in accordance with paragraph
3.B., "Procedure," of the Accomplishment Instructions of Bombardier
Service Bulletin 84-28-20, Revision D, dated November 23, 2018. If any
conditions are found meeting the criteria specified in Bombardier
Service Bulletin 84-28-20, Revision D, dated November 23, 2018, before
further flight, replace affected parts with new couplings and sleeves
of the same part number, in accordance with paragraph 3.B.,
"Procedure," of the Accomplishment Instructions of Bombardier Service
Bulletin 84-28-20, Revision D, dated November 23, 2018.
(2) Do a detailed inspection of the fuel tube end ferrules, fuel component
end ferrules, and ferrule O-ring flanges for damage and wear, and
rework (repair, replace, or blend, as applicable) the parts, in
accordance with paragraph 3.B., "Procedure," of the Accomplishment
Instructions of Bombardier Service Bulletin 84-28-20, Revision D,
dated November 23, 2018.
(i) OPTIONAL TERMINATING ACTION FOR REPETITIVE INSPECTIONS
For airplanes having serial numbers 4001 and 4003 through 4575 inclu-
sive: Doing a detailed inspection of the fuel tube end ferrules, fuel
component end ferrules, and ferrule O-ring flanges for damage and
wear, and reworking (repair, replace, or blend, as applicable) the
parts; and doing a retrofit (structural rework) of the fuel couplings,
isolators, and structural provisions, in accordance with paragraph
3.B., "Procedure," of the Accomplishment Instructions of Bombardier
Service Bulletin 84-28-21, Revision C, dated July 13, 2018, terminates
the inspections specified in paragraphs (h)(1) and (2) of this AD.
(j) ELECTRICAL BONDING CHECKS/DETAILED INSPECTION
For airplanes having serial numbers 4001, 4003 through 4489 inclusive,
and 4491 through 4575 inclusive that, as of the effective date of this
AD, have done the actions specified in Bombardier Service Bulletin 84
-28-21, Revision A, dated September 29, 2017; and airplanes having
serial numbers 4576 through 4581 inclusive: Within 6,000 flight hours
or 36 months after the effective date of this AD, whichever occurs
first, do the actions specified in paragraph (j)(1) or (2) of this AD.
(1) Accomplish electrical bonding checks of all threaded couplings on the
inboard vent lines in the left and right wings, in accordance with
paragraph 3.B., "Procedure," of the Accomplishment Instructions of
Bombardier Service Bulletin 84-28-26, Revision A, dated November 29,
2018.
(2) Do a detailed inspection of the fuel tube end ferrules, fuel component
end ferrules, and ferrule O-ring flanges for damage and wear, and re-
work (repair, replace or blend, as applicable) the parts; and a retro-
fit (structural rework) of the fuel couplings, isolators and structur-
al provisions in accordance with paragraph 3.B., "Procedure," of the
Accomplishment Instructions of Bombardier Service Bulletin 84-28-21,
Revision C, dated July 13, 2018.
(k) MAINTENANCE OR INSPECTION PROGRAM REVISION
Within 30 days after the effective date of this AD, revise the exist-
ing maintenance or inspection program, as applicable, to incorporate
the information specified in Q400 Dash 8 (Bombardier) Temporary
Revision ALI-0192, dated April 24, 2018; and Q400 Dash 8 (Bombardier)
Temporary Revision ALI-0193, dated April 24, 2018. Except as specified
in paragraph (l) of this AD, the initial compliance time for doing the
tasks in Q400 Dash 8 (Bombardier) Temporary Revision ALI-0192, dated
April 24, 2018, is at the time specified in Q400 Dash 8 (Bombardier)
Temporary Revision ALI-0192, dated April 24, 2018, or within 30 days
after the effective date of this AD, whichever occurs later.
(l) INITIAL COMPLIANCE TIME FOR TASK 284000-419
The initial compliance time for task 284000-419 is at the time speci-
fied in paragraph (l)(1) or (2) of this AD, as applicable, or within
30 days after the effective date of this AD, whichever occurs later.
(1) For airplanes having serial numbers 4001 and 4003 through 4575, inclu-
sive: Within 18,000 flight hours or 108 months, whichever occurs first
after the earliest date of embodiment of Bombardier Service Bulletin
84-28-21 on the airplane.
(2) For airplanes having serial numbers 4576 and subsequent: Within 18,000
flight hours or 108 months, whichever occurs first, from the date of
issuance of the original airworthiness certificate or original export
certificate of airworthiness.
(m) NO ALTERNATIVE ACTIONS, INTERVALS OR CRITICAL DESIGN CONFIGURATION CON
-TROL LIMITATIONS (CDCCLS)
After the existing maintenance or inspection program has been revised
as required by paragraph (k) of this AD, no alternative actions (e.g.,
inspections), intervals, or CDCCLs may be used unless the actions,
intervals, and CDCCLs are approved as an alternative method of
compliance (AMOC) in accordance with the procedures specified in
paragraph (p)(1) of this AD.
(n) NO REPORTING REQUIREMENT
Although Bombardier Service Bulletin 84-28-20 Revision D, dated Novem-
ber 23, 2018, specifies to submit certain information to the manufac-
turer, this AD does not include that requirement.
(o) CREDIT FOR PREVIOUS ACTIONS
(1) This paragraph provides credit for the actions required by paragraphs
(h)(1) and (2) of this AD, if those actions were performed before the
effective date of this AD using the service information specified in
paragraph (o)(1)(i), (ii), or (iii) of this AD.
(i) Bombardier Service Bulletin 84-28-20, Revision A, dated December 14,
2016.
(ii) Bombardier Service Bulletin 84-28-20, Revision B, dated February 13,
2017.
(iii) Bombardier Service Bulletin 84-28-20, Revision C, dated April 28,
2017.
(2) For the airplane having serial number 4164, this paragraph provides
credit for the initial inspections required by paragraphs (h)(1) and
(2) of this AD, if those actions were performed before the effective
date of this AD using Bombardier Service Bulletin 84-28-20, dated Sep-
tember 30, 2016.
(3) This paragraph provides credit for the actions specified in paragraph
(i) of this AD if those actions were performed before the effective
date of this AD using the service information specified in paragraph
(o)(3)(i), (ii), or (iii) of this AD.
(i) Bombardier Service Bulletin 84-28-21, dated August 31, 2017.
(ii) Bombardier Service Bulletin 84-28-21, Revision A, dated September 29,
2017.
(iii) Bombardier Service Bulletin 84-28-21 Revision B, dated June 8, 2018.
(4) This paragraph provides credit for the actions required by paragraph
(j)(1) of this AD if those actions were performed before the effective
date of this AD using Bombardier Service Bulletin 84-28-26, dated
August 14, 2018.
(5) This paragraph provides credit for the actions required by paragraph
(j)(2) of this AD if those actions were performed before the effective
date of this AD using Bombardier Service Bulletin 84-28-21, Revision B
dated June 8, 2018.
(6) For airplanes having serial numbers 4001, 4003 through 4489 inclusive,
and 4491 through 4575 inclusive, and that are post Bombardier Service
Bulletin 84-28-21 Revision A, dated September 29, 2017: This paragraph
provides credit for the actions required by paragraph (j) of this AD
if those actions were performed prior to the effective date of this AD
using the service information specified in paragraph (o)(6)(i) or (ii)
of this AD.
(i) Bombardier Modification Summary Package (ModSum) IS4Q2800032, dated
February 1, 2018.
(ii) Any airworthiness limitation change request (ACR) specified in figure
1 to paragraph (o)(6)(ii) of this AD.
FIGURE 1 TO PARAGRAPH (O)(6)(II) – ACRS
_______________________________________
ACR NUMBER DATED
_______________________________________
400-072 January 24, 2018
400-073 January 23, 2018
400-074 January 24, 2018
400-077 February 27, 2018
400-078 March 21, 2018
400-079 April 18, 2018
400-080 April 30, 2018
400-081 May 4, 2018
400-082 May 4, 2018
400-083 June 4, 2018
400-084 May 18, 2018
_______________________________________
(p) OTHER FAA AD PROVISIONS
The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, New York ACO
Branch, FAA, has the authority to approve AMOCs for this AD, if
requested using the procedures found in 14 CFR 39.19. In accordance
with 14 CFR 39.19, send your request to your principal inspector or
local Flight Standards District Office, as appropriate. If sending
information directly to the manager of the certification office, send
it to ATTN: Program Manager, Continuing Operational Safety, FAA, New
York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 516-228-7300; fax 516-794-5531. Before using any approved
AMOC, notify your appropriate principal inspector, or lacking a
principal inspector, the manager of the local flight standards
district office/certificate holding district office.
(2) Contacting the Manufacturer: For any requirement in this AD to obtain
instructions from a manufacturer, the instructions must be
accomplished using a method approved by the Manager, New York ACO
Branch, FAA; or Transport Canada Civil Aviation (TCCA); or De
Havilland Aircraft of Canada Limited's TCCA Design Approval
Organization (DAO). If approved by the DAO, the approval must include
the DAO-authorized signature.
(q) RELATED INFORMATION
(1) Refer to Mandatory Continuing Airworthiness Information (MCAI)
Canadian Airworthiness Directive CF-2017-04R2, dated September 25,
2018, for related information. This MCAI may be found in the AD docket
on the internet at https://www.regulations.gov by searching for and
locating Docket No. FAA-2019-0726.
(2) For more information about this AD, contact Joseph Catanzaro, Aero-
space Engineer, Airframe and Propulsion Section, FAA, New York ACO
Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone
516-228-7366; fax 516-794-5531; email 9-avs-nyaco-cos@faa.gov.
(3) Service information identified in this AD that is not incorporated by
reference is available at the addresses specified in paragraphs (r)(3)
and (4) of this AD.
(r) MATERIAL INCORPORATED BY REFERENCE
(1) The Director of the Federal Register approved the incorporation by
reference (IBR) of the service information listed in this paragraph
under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do the actions
required by this AD, unless this AD specifies otherwise.
(i) Bombardier Service Bulletin 84-28-20, Revision D, dated November 23,
2018.
(ii) Bombardier Service Bulletin 84-28-21 Revision C, dated July 13, 2018.
(iii) Bombardier Service Bulletin 84-28-26, Revision A, dated November 29,
2018.
(iv) Bombardier Q400 Dash 8 (Bombardier) Temporary Revision ALI-0192 dated
April 24, 2018.
(v) Q400 Dash 8 (Bombardier) Temporary Revision ALI-0193, dated April 24,
2018.
(3) For service information identified in this AD, contact De Havilland
Aircraft of Canada Limited, Q-Series Technical Help Desk, 123 Garratt
Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone 416-375-4000;
fax 416-375-4539; email thd@dehavilland.com; internet https://
dehavilland.com.
(4) You may view this service information at the FAA, Transport Standards
Branch, 2200 South 216th St., Des Moines, WA. For information on the
availability of this material at the FAA, call 206-231-3195.
(5) You may view this 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, email
fedreg.legal@nara.gov, or go to: https://www.archives.gov/federal-
register/cfr/ibr-locations.html.
Issued on March 1, 2020. Lance T. Gant, Director, Compliance & Airworthi-
ness Division, Aircraft Certification Service.
FOR FURTHER INFORMATION CONTACT: Joseph Catanzaro, Aerospace Engineer, Air
-frame and Propulsion Section, FAA, New York ACO Branch, 1600 Stewart Ave-
nue, Suite 410, Westbury, NY 11590; telephone 516-228-7366; fax 516-794-
5531; email 9-avs-nyaco-cos@faa.gov.
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DEPARTMENT OF TRANSPORTATION
* Table does not include estimated
costs for revising the maintenance or inspection
The FAA estimates the following costs
to do any necessary on-
Authority for This Rulemaking |