{"id":"F2008L01401","name":"AD/A320/223 - Electronic Instrument System Display Management Computer Software","slug":"ad-a320-223-electronic-instrument-system-display-management-computer-software","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":73657,"registerId":"commonwealth-F2008L01401-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Airbus Industrie A319, A320 and A321 Ser","sectionType":"division","heading":"Airbus Industrie A319, A320 and A321 Series Aeroplanes","content":"### Airbus Industrie A319, A320 and A321 Series Aeroplanes\n\n| AD/A320/223 | Electronic Instrument System Display Management Computer Software | 6/2008 |\n| ----------- | ----------------------------------------------------------------- | ------ |\n\n```html\n

Applicability:

Airbus model aeroplanes listed in Table 1 fitted with EIS2 (Electronic Instrument System) standard S4.2 (DMC disk part number F1419418) installed by Airbus Modification 34571 or by Airbus Service Bulletin (SB) SB A320-31A1220 dated 2 July 2004, except aircraft which have embodied modification 36725 during production.

Table 1

A318-111
A318-112
A319-111
A319-112

A319-113
A319-114
A319-115
A319-131

A319-132
A319-133
A320-111
A320-211

A320-212
A320-214
A320-215
A320-216

A320-231
A320-232
A320-233
A321-111

A321-112
A321-131
A321-211
A321-212

A321-213
A321-231
A321-232

Requirement:

1. The following dispatch limitations are mandatory for all flights:

For aircraft equipped with EIS2 LCD Display Units and with conventional standby instruments:

- Dispatch with the standby IAS (Indicated Airspeed) indicator inoperative (MMEL 34-21-01) is no longer authorised.

- Dispatch with inoperative standby horizon or inoperative standby altimeter may be authorised provided that the crew maintains VMC conditions during the entire flight and day-light conditions.

For aircraft equipped with EIS2 LCD Display Units and with the Integrated Standby Instrument System (ISIS):

- Dispatch with the ISIS airspeed function inoperative (MMEL
34-22-03-C) is no longer authorised.

- Dispatch with inoperative ISIS horizon function or inoperative ISIS altitude function may be authorised provided that the crew maintains VMC conditions during the entire flight and day-light conditions.

Reminder: For dispatch with one Display Unit inoperative as per MMEL
31-63-01, it is reminded that the subject Display Unit must be switched-off as per associated MMEL operational procedure.

Incorporation of the Master Minimum Equipment List (MMEL) changes or a copy of this Directive in the Aircraft Operations Manual is a satisfactory method of compliance with this Requirement.

2. Install EIS2 standard S7 (DMC disk part number F1461768) in accordance with the instructions of Airbus SB A320-31-1276 dated 18 April 2007 or later revision approved by the European Aviation Safety Agency (EASA).

This action is not required if Airbus SB A320-31-1263 Revision 1 or Airbus SB A320-31-1276 Original Issue has been embodied.

3. Remove the Requirement 1 dispatch limitations.

Note: EASA AD 2008-0032 refers.

Compliance:

For Requirement 1 - Within seven days after the effective date of this Directive

For Requirement 2 - Before 31 March 2009.

For Requirement 3 - Concurrent with Requirement 2.

This Airworthiness Directive becomes effective on 5 June 2008.

Background:

The EASA has advised that two incidents have occurred due to the lack of visibility on the Primary Flight Display (PFD) of the Traffic Alert and Collision Avoidance System (TCAS) indications.

EIS2 standard S7 introduces modifications to the vertical speed indication to improve the legibility in case of TCAS Resolution Advisory. The modifications consist in changing the colour of the needle and increasing the width of the TCAS green band.

This Directive supersedes AD/A320/157 Amdt 2 (EASA AD 2006-0108), which is cancelled, by revising the applicability and mandating the installation of the improved EIS2 standard S7.

\n```\n\n![](image.001.png) \nJames Coyne \nDelegate of the Civil Aviation Safety Authority\n\n22 April 2008","sortOrder":0},{"sectionNumber":"AD/A320/223","sectionType":"part","heading":"AD/A320/223","content":"## AD/A320/223","sortOrder":1},{"sectionNumber":"Electronic Instrument System Display Man","sectionType":"part","heading":"Electronic Instrument System Display Management Computer Software","content":"## Electronic Instrument System Display Management Computer Software","sortOrder":2},{"sectionNumber":"6/2008","sectionType":"part","heading":"6/2008","content":"## 6/2008","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":true,"description":"Yes. The Directive supersedes AD/A320/157 Amdt 2 by revising applicability and now mandates installation of the improved EIS2 standard S7; it also introduces temporary mandatory dispatch limitations until the software upgrade is embodied and preserves exemptions where specified earlier service bulletins or production modification 36725 have already been embodied (source: Directive text stating it \"supersedes AD/A320/157 Amdt 2... revising the applicability and mandating the installation of the improved EIS2 standard S7\")."},"complexity_factors":["Multiple aircraft models and equipment variants listed in Table 1 (different serial/modification status affect applicability).","Two-tier action structure: immediate mandatory dispatch limitations (Requirement 1) plus a mandated software installation by a later deadline (Requirement 2).","Conditional exemptions where earlier service bulletins or production modification (mod 36725) already embodied, creating record/verification tasks for operators.","Interaction with MMEL and Aircraft Operations Manual (operators must incorporate MMEL changes or the Directive), adding procedural and training burdens.","Technical nature of the change (EIS2 software S7 alters display behaviour — vertical speed needle colour and TCAS band width) requiring certified SB A320-31-1276 implementation.","Staggered compliance windows (dispatch limits within 7 days; installation before 31 March 2009) that affect scheduling and operational continuity.","Regulatory cross-references and history: supersedes AD/A320/157 Amdt 2 and refers to an EASA AD, increasing coordination and traceability requirements.","Operational constraint reminder (display unit must be switched off per MMEL when dispatched with one Display Unit inoperative) creating specific cockpit procedure compliance."],"plain_english_summary":"This Airworthiness Directive requires operators of listed Airbus A318/A319/A320/A321 aeroplanes fitted with EIS2 standard S4.2 to install updated EIS2 software (standard S7) and, until that upgrade, follow mandatory dispatch limitations that restrict certain standby/ISIS airspeed, horizon and altimeter dispatch permissions. EASA says the software change improves Primary Flight Display visibility for TCAS advisories by altering the vertical speed needle colour and widening the TCAS green band; operators must amend MMEL/operations manuals and meet short and medium-term compliance deadlines, bearing the upgrade and scheduling costs."},"kimi_summary":{"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":false,"description":"This is a standard airworthiness directive maintaining its original purpose — addressing a specific software safety defect in aircraft display systems. The directive supersedes a previous version but does not expand beyond the original safety intent of ensuring TCAS visibility."},"complexity_factors":["Multiple conditional applicability criteria (specific aircraft models, specific software part numbers, specific modification status, specific production exceptions)","Nested equipment configurations creating different compliance paths (aircraft with conventional standby instruments vs. ISIS integrated system)","Three interdependent requirements with staggered compliance deadlines and conditional exemptions","Cross-reference to external documents (Airbus Service Bulletins, EASA AD 2008-0032, MMEL entries) without full reproduction of their content","Technical aviation terminology requiring domain knowledge (EIS2, DMC, TCAS, MMEL, dispatch limitations, VMC conditions)","Supersedes previous directive (AD/A320/157 Amdt 2) with revised applicability"],"plain_english_summary":"Australia's CASA orders operators of certain Airbus A318/A319/A320/A321s with older EIS2 software (standard S4.2) to fix a TCAS display defect that can make collision alerts hard to see. Immediate temporary dispatch limits apply (within 7 days) on flying with certain inoperative standby instruments, and operators must install EIS2 standard S7 software by 31 March 2009 to restore proper TCAS visibility. The rule prevents missed traffic alerts and reduces mid‑air collision risk."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-223-electronic-instrument-system-display-management-computer-software","history":"/api/acts/ad-a320-223-electronic-instrument-system-display-management-computer-software/history","analysis":"/api/acts/ad-a320-223-electronic-instrument-system-display-management-computer-software/analysis","conflicts":"/api/acts/ad-a320-223-electronic-instrument-system-display-management-computer-software/conflicts","importantCases":"/api/acts/ad-a320-223-electronic-instrument-system-display-management-computer-software/important-cases","documents":"/api/acts/ad-a320-223-electronic-instrument-system-display-management-computer-software/documents"}}