EASA SIB 2017-09 : Lack of Monitoring of DU-875, DU-885 and DU-885AF Displays

EASA SIB No.: 2017-09 Safety Information Bulletin Airworthiness SIB No.: 2017-09 Issued: 22 June 2017 Subject: Lack of Monitoring of DU-875, DU-885 and DU-885AF Displays Ref. Publications: [1] Esterline Service Bulletin Avionics (SBAv) SBAv-0058 Issue 03, dated 31 May 2017 (or later Issue). [2] Esterline SBAv-0060 Issue 01, dated 31 May 2017 (or later Issue). [3] Esterline Safety Analysis Report for the Display Unit (DU -8x5) - 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) - 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. 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 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 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 EASA, 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.: 2017-09 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 modifications listed in Table 1 below, and to report any non-compliance to EASA and the local authority to determine the need for further action. 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 1E-05 UE04 1E-07 UE05 Unmodified UE06 1E-06 UE07 1E-05 UE08 1E-05 UE09 Unmodified UE10 5E-06 UE11 Unmodified UE12 Unmodified 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 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, temporarily 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 for repair 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.: 2017-09 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 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 display 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 display 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 SIB are based on conservative assumptions and are expected to be modified in a further release of these documents. 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 Kennedy Park 35A, 8500 Kortrijk, Belgium, E-mail: [email protected]. 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.: 2017-09 Appendix 1 – Affected Displays and Aeroplane Manufacturers The ETSO Approval Holder of the affected displays is Esterline Belgium. Affected displays are known to be installed on, but not limited to, the aeroplanes listed below. DU Type DU Part Number TC Holder(*) STC Holder(s) (*) Aeroplane Model(s) With Revision Index 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 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) 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. BD-700-1A10 and BD-700-1A11 DU-875 K9321060A13 01 DASSAULT AVIATION DASSAULT AIRCRAFT SERVICES (DAS), Falcon 900EX STANDARD AERO and Mystère Falcon 900 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) 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.: 2017-09 DU Type DU Part Number TC Holder(*) STC Holder(s) (*) Aeroplane Model(s) With Revision Index Equal or Less Than DU-875 K9321060A14 00 LEARJET INC. JETCITY Learjet 40 and Learjet 45 CHIPPEWA AEROSPACE, INC. 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 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 (*) The displays are usually installed by an STC Holder, but could also be installed directly by the TC Holder. 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.: 2017-09 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 K9321060A11 with revision index 01: 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 Dear Madam/Sir, Please find attached hereto an EASA Safety Information Bulletin (SIB) which has already been posted on our web site and can be viewed at https://ad.easa.europa.eu/ad/2017-09 . EASA ADs and other Safety Publications are available online at http://ad.easa.europa.eu Safety Information Section Email: [email protected] EASA Website (Attachment is in Acrobat PDF format) http://easa.europa.e u/ Postal: : Postfach 10 12 53, 50452 Cologne, Germany An agency of the European Union _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ This message is intended for the use of the addressee only and may contain information that is privileged and confidential. If you are not the intended recipient, you are notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by returning this e-mail. Sender accepts no liability for damage of any kind resulting from the risks inherent in the electronic transmission of messages. This communication does not constitute any formal commitment on behalf of the European Aviation Safety Agency.