{"id":"F2006L01449","name":"AD/G1159/45 Amdt 1 - Cockpit Flight Panel Displays","slug":"ad-g1159-45-amdt-1-cockpit-flight-panel-displays","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":59065,"registerId":"commonwealth-F2006L01449-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Gulfstream (Grumman) G1159 and G-IV Seri","sectionType":"division","heading":"Gulfstream (Grumman) G1159 and G-IV Series Aeroplanes","content":"### Gulfstream (Grumman) G1159 and G-IV Series Aeroplanes\n\n| AD/G1159/45 Amdt 1 | Cockpit Flight Panel Displays | 7/2006 DM |\n| ------------------ | ----------------------------- | --------- |\n\n```html\n

Applicability:

Model GIV-X series aeroplanes, serial numbers (S/N) 4001 and subsequent; and Gulfstream Model GV-SP series aeroplanes, S/N 5001 and subsequent; on which Gulfstream Modification ASC-904 or production equivalent has been incorporated.

Requirement:

Revise the Limitations Section of the Gulfstream G350, G450, G500 and G550 Aircraft Flight Manuals (AFM) by including the applicable revision listed in Table 1 or Table 2 of this Directive.

Any further revisions to the AFM must contain the identical procedures in the Limitations Section of the AFM revisions as required by this Directive.

Table 1

Aeroplane Models

GIV–X

GIV–X

GV–SP

GV–SP

Applicable Gulfstream AFM

GAC–AC–G350–OPS–0001 Revision 6, dated 24 January 2006

GAC–AC–G450–OPS–0001 Revision 7, dated 24 January 2006

GAC–AC–G500–OPS–0001 Revision 13, dated 24 January 2006

GAC–AC–G550–OPS–0001 Revision 15, dated 24 January 2006

\n```\n\n```html\n

Table 2

Aeroplane Models

GIV–X

GIV–X

GV–SP

GV–SP

Applicable Gulfstream AFM

GAC–AC–JAA-G350–OPS–0001 Revision 3, dated 25 January 2006

GAC–AC–JAA-G450–OPS–0001 Revision 3, dated 25 January 2006

GAC–AC–JAA-G500–OPS–0001 Revision 3, dated 25 January 2006

GAC–AC–JAA-G550–OPS–0001 Revision 5, dated 25 January 2006

Note: FAA AD 2006-04-13 R1 Amdt 39-14560 refers.

Compliance:

Within 10 days after the effective date of this Directive.

This Amendment becomes effective on 8 May 2006.

Background:

The United States Federal Aviation Administration has received a report indicating that all four of the cockpit flight panel display units simultaneously went blank during flight on a Gulfstream Model GV-SP aeroplane. The displays did not recover until the flightcrew pulled circuit breakers associated with the displays; subsequently, three of the four displays returned to normal. Initial investigation revealed discrepancies with the reversion logic of the advanced graphic modules. Similar display failures occurred during ground test operations. Such conditions, if not corrected, could result in a reduction of the flightcrew's situational awareness and possible loss of control of the aeroplane.

This Directive requires the revision of the Limitations section of the AFM by incorporating new procedures to follow in the event that the cockpit displays go blank or malfunction. The amendment of AFM is an interim measure and further rulemaking to correct the discrepancy is anticipated.

This revision accepts the information contained in the Joint Aviation Authority (JAA) Gulfstream AFM revisions as an alternative means of compliance.

\n```\n\n![](image.001.png) \nJames Coyne \nDelegate of the Civil Aviation Safety Authority\n\n4 May 2006","sortOrder":0},{"sectionNumber":"AD/G1159/45 Amdt 1","sectionType":"part","heading":"AD/G1159/45 Amdt 1","content":"## AD/G1159/45 Amdt 1","sortOrder":1},{"sectionNumber":"Cockpit Flight Panel Displays","sectionType":"part","heading":"Cockpit Flight Panel Displays","content":"## Cockpit Flight Panel Displays","sortOrder":2},{"sectionNumber":"7/2006 DM","sectionType":"part","heading":"7/2006 DM","content":"## 7/2006 DM","sortOrder":3}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"This amendment (Amdt 1) imposes an immediate, mandatory revision to AFM Limitations for specified Gulfstream GIV‑X and GV‑SP aeroplanes by listing specific AFM revisions as the required content and by accepting JAA/Gulfstream AFM revisions as an alternative means of compliance. It frames the change as an interim operational requirement while a technical correction is expected (see Requirement; Tables 1–2; Compliance; Background)."},"complexity_factors":["Narrow technical applicability to specific models, serial numbers and modification ASC‑904 (Applicability paragraph / Tables 1–2)","Immediate compliance deadline: AFM revisions required within 10 days (Compliance paragraph)","Obligation is procedural: revise AFM Limitations to add crew procedures rather than mandate hardware change (Requirement paragraph)","Accepts alternative compliance via listed JAA/Gulfstream AFM revisions (Table 2 / Note)","Interim nature: temporary procedural fix pending further rulemaking after technical investigation (Background paragraph)","Operational burden falls on aircraft operators: update manuals, promulgate procedures to flightcrew and ensure continued inclusion in subsequent AFM revisions (Requirement paragraph)","Technical cause (advanced graphic module reversion logic) remains to be corrected—potential for follow-up rulemaking (Background paragraph)"],"plain_english_summary":"This Civil Aviation Safety Authority directive requires operators of certain Gulfstream GIV‑X and GV‑SP aeroplanes (specific serial numbers with Gulfstream Modification ASC‑904) to revise the Limitations section of their Aircraft Flight Manuals to include new procedures if cockpit flight-panel displays go blank or malfunction. The directive accepts specified Gulfstream/JAA AFM revisions as an alternative means of compliance and is an interim safety measure while a technical fix is pursued."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment maintains the original scope of AD/G1159/45. The amendment adds an alternative means of compliance (Table 2 with JAA-compliant manuals) but does not expand the aircraft models covered or the fundamental safety purpose. The directive remains focused on the specific cockpit display failure mode in Gulfstream GIV-X and GV-SP aircraft."},"complexity_factors":["Two alternative compliance paths (Table 1 for standard AFM revisions, Table 2 for JAA/EASA-compliant revisions)","Specific serial number ranges and modification status requirements (ASC-904) limit applicability","Cross-reference to FAA AD 2006-04-13 R1 for background context","Conditional requirement that future AFM revisions must maintain identical procedures","Technical aviation terminology (AFM, Limitations Section, Modification ASC-904, reversion logic) assumes specialized knowledge"],"plain_english_summary":"This AD requires owners/operators of certain Gulfstream G350/G450/G500/G550 (GIV‑X/GV‑SP series with ASC‑904) to amend their Aircraft Flight Manuals within 10 days to add emergency procedures for the event all cockpit displays go blank. CASA issued it after an FAA‑reported incident where all four screens failed in flight and were only restored by pulling circuit breakers. It’s a temporary safety measure pending a permanent fix."}},"importantCases":[],"_links":{"self":"/api/acts/ad-g1159-45-amdt-1-cockpit-flight-panel-displays","history":"/api/acts/ad-g1159-45-amdt-1-cockpit-flight-panel-displays/history","analysis":"/api/acts/ad-g1159-45-amdt-1-cockpit-flight-panel-displays/analysis","conflicts":"/api/acts/ad-g1159-45-amdt-1-cockpit-flight-panel-displays/conflicts","importantCases":"/api/acts/ad-g1159-45-amdt-1-cockpit-flight-panel-displays/important-cases","documents":"/api/acts/ad-g1159-45-amdt-1-cockpit-flight-panel-displays/documents"}}