SAIB NE-18-01

FAA Aviation Safety

SPECIAL AIRWORTHINESS

INFORMATION BULLETIN SUBJ: Navigation - Integrated Flight Director System – Esterline DU-875, DU-885 and DU-885AF Displays SAIB: NE-18-01 Date: October 24, 2017 This is information only. Recommendations aren’t mandatory.

Introduction

This Special Airworthiness Information Bulletin alerts you, owners, operators, Type Certificate (TC) holders, and Supplemental Type Certificate (STC) holders of airplanes equipped with Esterline Belgium (formerly BARCO NV) DU-875, DU-885, and DU-885AF displays, that automatic selftests of the displays are not being performed as intended. These displays are often installed as part of a Honeywell Primus Elite flight deck upgrade. At this time, this airworthiness concern is not an unsafe condition that would warrant airworthiness directive (AD) action under Title 14 of the Code of Federal Aviation Regulations (14 CFR) part 39.

Background

The European Aviation Safety Agency (EASA) notified the FAA of this issue and has issued Safety Information Bulletin (SIB) 2017-09. DU-875, DU-885, and DU-885AF displays perform their intended function through a number of automatic self-tests. The manufacturer has determined that these displays do not perform some of these self-tests as frequently as intended or do not report some failures as intended. This may result in the displays not meeting its specification. It could also result in the installation not meeting the safety objectives of the airplane Functional Hazard Assessment (FHA) as initially determined at the time of the installation approval. The manufacturer is preparing a software update to recover the intended performance of the displays. The ETSO / TSO LODA Approval Holder of the affected displays is Esterline Belgium. Affected displays are known to be installed on, but not limited to, the airplanes listed in Appendix 1. The displays are usually installed by an STC holder, but may be installed directly by the TC holder.

Recommendations

The FAA recommends that all affected TC and STC holders re-evaluate the compliance of DU-875, DU-885, and DU-885AF displays with the FHA objectives, including the ‘no single failure’ criterion, using reference documents 3 through 8 in Table 2 below, and to report any non-compliance to the appropriate FAA ACO Branch to determine the need for further action. Under the provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.), the OMB has approved the information collection contained in this SAIB, and assigned OMB Control Number 2120-073 l.

The FAA also recommends that operators of airplanes fitted with DU-875 or DU-885 displays, as listed in Appendix 1 of this SAIB, accomplish the following repetitive actions in accordance with the instructions of section 5 of Esterline Service Bulletin Avionics (SBAv) SBAv-0058 Issue 03, dated 31 May 2017 (or later Issue), until the equipment is upgraded with a software release recovering the originally intended performance of the display:

• 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 an MFD/ND position and check for the presence of latent failure using the dedicated tool,

• Displays exhibiting latent failures should be reported to the equipment manufacturer and returned for repair through the known channels.

Table 1 - Conservative Values Modifying Reference Documents 3 and 4 Undesired event Conservative Failure Rate to consider in 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

The FAA also recommends that operators of airplanes fitted with DU-885AF displays, as listed in Appendix 1 of this SAIB, accomplish the instructions of section 5 of Esterline SBAv-0060 Issue 01, dated 31 May 2017 (or later Issue) until the equipment is upgraded with a software release recovering the originally intended performance of the display.

The FAA also recommends that operators of airplanes fitted with DU-875, DU-885, or DU-885AF displays, as listed in Appendix 1 of this SAIB, upgrade the displays with a software release recovering the originally intended performance of the display in accordance with Esterline instructions when available.

Note 1: The intervals defined in reference documents 1 and 2 as well as the failure rates defined in Table 1 of this SAIB are based on conservative assumptions. We expect Esterline to modify this information in a future release of these documents.

Note 2: Affected displays include those with the revision index number specified in Appendix 1 or lower revision index numbers.

Each equipment plate, as shown in Figure 1, includes a display part number that consists of 11 alphanumerical characters and a revision index number that consists of two digits (e.g., 01). The latest number is crossed out on the equipment plate. The latest two-digit revision index number is specified in Appendix 1 of this SAIB.

3 The following example shows the part number (P/N) K9321060A11 with a revision index number of

01. Therefore, P/N K9321060A11 with a revision index number of either 01 or 00 is affected.

Figure 1 – Equipment Plate Markings

Table 2 - Reference Documents Document reference number Document title 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

For Further Information Contact

Nick Rediess, Aerospace Engineer, FAA, Boston ACO Branch, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7159; email: nicholas.rediess@faa.gov.

For Related Service Information Contact

Esterline Belgium, President Kennedy Park 35A, 8500 Kortrijk, Belgium, email:

display.support@esterline.com.

4 Appendix 1 - Affected Displays and Airplane Manufacturers DU Type DU Part Number Revision Index Number TC Holder STC Holder Airplane Models 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), Standard Aero Falcon 900EX and Mystère Falcon 900 DU-875 K9321060A12 01 EMBRAER S.A. EMBRAER, 328 Design GMBH EMB-135BJ (Legacy 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), Standard Aero Falcon 900EX 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) DU-875 K9321060A14 00 Learjet Inc. Jetcity Chippewa Aerospace, Inc.

Learjet 40 and Learjet 45 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