Dear Madam/Sir,
Please find attached hereto a preliminary draft for an EASA Safety Information Bulletin (SIB) [task
2016.282] regarding
Lack of Monitoring of DU-875, DU-885 and DU-885AF Displays
for consultation until 15 June 2017.
We would be grateful to you if you could send any comment(s) to
[email protected] by making
reference to [task 2016.282], no later than the above-mentioned deadline.
Safety Information Section Email:
[email protected]
EASA Website
(Attachment is in Acrobat PDF format)
Postal: Postfach 10 12 53, 50452 Cologne, Germany
An agency of the European Union
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European Aviation Safety Agency.
EASA SIB No.: 2017-XX
Safety Information Bulletin
Airworthiness
SIB No.: 2017-XX
Issued: dd month 2017
Subject: Lack of Monitoring of DU-875, DU-885 and DU-885AF Displays
Ref. Publications:
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[1] Esterline Service Bulletin Avionics (SBAv) SBAv-0058 Issue 02 or later, dated 23 May 2017.
[2] Esterline Service Bulletin Avionics (SBAv) SBAv-0060 Issue 00 or later, dated 23 May 2017.
[3] Esterline Safety Analysis Report for the Display Unit (DU -8x5) -
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Document number P0616-SDRL-DU-8x5-021 Issue 06, release date 18 December 2009.
[4] Esterline Safety Analysis Report for the Display Unit (DU -8x5AF) -
Document number P0903-SDRL-DU-8x5AF-021 Issue 00, release date 06 May 2015.
[5] Esterline Failure Mode Effect Analysis for the Display Unit (DU-885) -
Document number P0616-SDRL-DU-885-020 Issue 05, release date 16 November 2016.
[6] Esterline Failure Mode Effect Analysis for the Display Unit (DU-875) -
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Document number P0615-SDRL-DU-875-020 Issue 02, release date 09 November 2011.
[7] Esterline Reliability Prediction Report for the Display Unit (DU-875) -
Document number P0615-SDRL-DU-875-022 Issue 03, release date 24 October 2011.
[8] Esterline Reliability Prediction Report for the Display Unit (DU-885) -
Document number P0616-SDRL-DU-885-022 Issue 05, release date 24 October 2011.
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Applicability:
All operators, Type Certificate (TC) and Supplemental Type Certificate (STC) holders of aeroplane
types fitted with Esterline Belgium, formerly BARCO NV, DU-875, DU-885 and DU-885AF displays,
as identified by Part Number (P/N) in Appendix 1 of this SIB and as identified in Appendix 2 of this
SIB. These displays are installed as part of the Honeywell Primus Elite display update of the Primus
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1000 and Primus 2000 suites.
Description:
DU-875, DU-885 and DU-885AF displays perform their intended function through a number of
automatic self-tests. It became apparent, at the occasion of further development, that some of
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these tests are not performed as frequently as foreseen and some failures are not reported as
intended. This may result in the equipment not meeting its specification. It could also result in the
installation not meeting the safety objectives of the aeroplane Failure Hazard Analysis (FHA) as
initially determined at the time of the installation approval.
The equipment manufacturer is preparing a mid-term software update to recover the intended
performance of the displays. The safety documentation has been partially updated, but some
results are still subject to discussion with the Agency, requiring the interim use of conservative
values.
This is information only. Recommendations are not mandatory.
TE.CAP.00117-006 © European Aviation Safety Agency. All rights reserved. ISO9001 Certified. Page 1 of 6
Proprietary document. Copies are not controlled. Confirm revision status through the EASA-Internet/Intranet.
An agency of the European Union
EASA SIB No.: 2017-XX
This SIB will be updated to reflect the release of the safety documentation and of the software
update.
At this time, the safety concern described in this SIB is not considered to be an unsafe condition
that would warrant Airworthiness Directive (AD) action under Regulation (EU) 748/2012, Part
21.A.3B.
Recommendation(s):
EASA recommends all affected TC and STC holders to re-evaluate the compliance of DU-875,
DU-885 and DU-885AF displays with the FHA objectives, including the ‘no single failure’ criterion,
using the safety documentation (ref. [3] to [8]) from the equipment manufacturer with the
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modifications listed in Table 1 below, and to report any non-compliance to the Agency to
determine the need for further action.
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Table 1: Conservative values modifying documents [3] and [4]
Undesired Conservative Failure Rate to consider in
Event place of the Calculated Failure Rate (/H)
UE01 5E-06
UE02 1E-07
UE03
UE04
UE05
IN 1E-05
1E-07
Unmodified
UE06 1E-06
UE07 1E-05
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UE08 1E-05
UE09 Unmodified
UE10 5E-06
UE11 Unmodified
UE12 Unmodified
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In addition, EASA recommends all operators of aeroplanes fitted with DU-875 or DU-885 displays,
as listed in Appendix 1 and 2 of this SIB, to accomplish the following repetitive actions in
accordance with the instructions of section 5 of Esterline SBAv-0058 (ref. [1]) until the equipment
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is upgraded with a software release recovering the intended performance:
For displays in Multi-function Display/Navigation Display (MFD/ND) position, check for the
presence of latent failure using the dedicated tool,
For displays in Primary Flight Display/Engine Indicating and Crew Alerting System Display
(PFD/EICAS) positions, move the display to a MFD/ND position, check for the presence of
latent failure using the dedicated tool,
Displays exhibiting latent failures should be reported to the equipment manufacturer and
should be returned to be serviced through the known channels.
This is information only. Recommendations are not mandatory.
TE.CAP.00117-006 © European Aviation Safety Agency. All rights reserved. ISO9001 Certified. Page 2 of 6
Proprietary document. Copies are not controlled. Confirm revision status through the EASA-Internet/Intranet.
An agency of the European Union
EASA SIB No.: 2017-XX
EASA also recommends all operators of aeroplanes fitted with DU-885AF displays, as listed in
Appendix 1 and 2 of this SIB, to accomplish these repetitive actions actions in accordance with the
instructions of section 5 of Esterline SBAv-0060 (ref. [2]) until the equipment is upgraded with a
software release recovering the intended performance.
EASA also recommends all operators of aeroplanes fitted with DU-875, DU-885 or DU-885AF
displays, as listed in Appendix 1 and 2 of this SIB, to upgrade the displays with a software release
recovering the intended performance in accordance with instructions that will be made available
by Esterline.
Note: The interval defined in ref. [1] and [2] as well as the failure rates defined in Table 1 of this
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SIB are based on conservative assumptions and should be improved in a further release of these
documents.
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Contact(s):
For further information contact the EASA Safety Information Section, Certification Directorate.
E-mail:
[email protected].
For a copy of the Esterline SBAv, or technical assistance or advice, contact Esterline Belgium,
President Kennedypark 35A, 8500 Kortrijk, Belgium, E-mail:
[email protected].
IN
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This is information only. Recommendations are not mandatory.
TE.CAP.00117-006 © European Aviation Safety Agency. All rights reserved. ISO9001 Certified. Page 3 of 6
Proprietary document. Copies are not controlled. Confirm revision status through the EASA-Internet/Intranet.
An agency of the European Union
EASA SIB No.: 2017-XX
Appendix 1 – Affected Displays and Aeroplane Manufacturers
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Displays are known to be installed on, but not limited to, the aeroplanes listed below
DU Type DU Part Number Type Certificate Holder Supplemental Type Certificate Aeroplane Model(s)
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With Revision Index Holder(s)
Equal or Less Than
DU-875 K9321060A04 00 328 SUPPORT SERVICES GMBH Dornier 328-100
DU-875 K9321060A05 00 No known installations
DU-875 K9321060A10 08 No known installations
DU-875 K9321060A11 01 BOMBARDIER INC LEARJET INC. BD-700-1A10
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and BD-700-1A11
DU-875 K9321060A11 01 DASSAULT AVIATION DASSAULT AIRCRAFT SERVICES (DAS), Falcon 900EX
STANDARD AERO and Mystère Falcon 900
DU-875 K9321060A12 01 EMBRAER S.A. EMBRAER, EMB-135BJ (Legacy
328 DESIGN GMBH 600/650)
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DU-875 K9321060A13 01 TEXTRON AVIATION, INC. 750 (Citation X)
DU-875 K9321060A13 01 EMBRAER S.A. CHIPPEWA AEROSPACE, Inc. EMB-135 and EMB-145
Series
DU-875 K9321060A13 01 BOMBARDIER INC LEARJET INC.
DU-875 K9321060A13 01 DASSAULT AVIATION DASSAULT AIRCRAFT SERVICES (DAS), Falcon 900EX
STANDARD AERO and Mystère Falcon 900
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DU-875 K9321060A13 01 BOMBARDIER INC CHIPPEWA AEROSPACE, Inc. BD-700-1A10
and BD-700-1A11
DU-875 K9321060A13 01 DASSAULT AVIATION CHIPPEWA AEROSPACE, Inc. Falcon 900EX
and Mystère Falcon 900
DU-875 K9321060A14 00 TEXTRON AVIATION, INC. CHIPPEWA AEROSPACE, Inc. 550, 560 XL (Excel) and
560 (Encore and Ultra)
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DU-875 K9321060A14 00 LEARJET INC. JETCITY Learjet 40 and Learjet 45
CHIPPEWA AEROSPACE, Inc.
This is information only. Recommendations are not mandatory.
TE.CAP.00117-006 © European Aviation Safety Agency. All rights reserved. ISO9001 Certified.
Proprietary document. Copies are not controlled. Confirm revision status through the EASA-Internet/Intranet.
An agency of the European Union
EASA SIB No.: 2017-XX
DU Type DU Part Number Type Certificate Holder Supplemental Type Certificate Aeroplane Model(s)
With Revision Index Holder(s)
Equal or Less Than
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DU-885 K9321061A01 11 No known installations
DU-885 K9321061A02 02 No known installations
DU-885 K9321061A03 01 GULFSTREAM AEROSPACE CORP. GIV and GIV-SP
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DU-885 K9321061A10 12 No known installations
DU-885 K9321061A11 03 No known installations
DU-885 K9321061A12 02 GULFSTREAM AEROSPACE CORP. GV
DU-885AF K9321063A00 01 GULFSTREAM AEROSPACE CORP. GIV and GIV-SP
DU-885AF K9321063A10 01 GULFSTREAM AEROSPACE CORP. GULFSTREAM AEROSPACE CORP. GV
IN
IM
EL
PR
This is information only. Recommendations are not mandatory.
TE.CAP.00117-006 © European Aviation Safety Agency. All rights reserved. ISO9001 Certified.
Proprietary document. Copies are not controlled. Confirm revision status through the EASA-Internet/Intranet.
An agency of the European Union
EASA SIB No.: 2017-XX
Appendix 2 – Affected Displays Index Numbers
The display part number is composed of 11 alphanumerical characters plus 2 additional digits as
striked out on the equipment plate. These two digits are referred to as the revision index in
Appendix 1 of this SIB.
The example below shows the part number K9321062A01 with revision index 01:
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IN
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This is information only. Recommendations are not mandatory.
TE.CAP.00117-006 © European Aviation Safety Agency. All rights reserved. ISO9001 Certified. Page 6 of 6
Proprietary document. Copies are not controlled. Confirm revision status through the EASA-Internet/Intranet.
An agency of the European Union