{"id":"F2007L04019","name":"AD/GENERAL/55 Amdt 2 - Directional Gyros - Inspection - CANCELLED","slug":"ad-general-55-amdt-2-directional-gyros-inspection-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":160809,"registerId":"commonwealth-F2007L04019-current","compilationNumber":null,"startDate":"2026-04-04","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Aircraft - General","sectionType":"division","heading":"Aircraft - General","content":"### Aircraft - General\n\n| AD/GENERAL/55 Amdt 2 | Directional Gyros - Inspection | 11/2007 |\n| -------------------- | ------------------------------ | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                  |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 25 October 2007.                                                                                                                                                                                                                                                    |\n| Background:  | This AD is a one off requirement and the safety issue should now be addressed. This AD was issued under CAR 37A. The justification to retain this AD would not satisfy the CASR Part 39. The requirements should be contained in the aircraft maintenance manual for hemisphere operations. |\n\n![](image.001.png)\n\nCharles Lenarcic  \nDelegate of the Civil Aviation Safety Authority\n\n14 September 2007","sortOrder":0},{"sectionNumber":"AD/GENERAL/55 Amdt 2","sectionType":"part","heading":"AD/GENERAL/55 Amdt 2","content":"## AD/GENERAL/55 Amdt 2","sortOrder":1},{"sectionNumber":"Directional Gyros - Inspection","sectionType":"part","heading":"Directional Gyros - Inspection","content":"## Directional Gyros - Inspection","sortOrder":2},{"sectionNumber":"11/2007","sectionType":"part","heading":"11/2007","content":"## 11/2007","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2185},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This amendment terminates the instrument entirely rather than expanding its scope. The original legislation imposed mandatory inspection requirements; this version cancels those requirements effective 25 October 2007, reducing the regulatory scope to nil. This represents a conclusion of the regulatory lifecycle rather than scope creep."},"complexity_factors":["Single operative provision (cancellation)","No defined terms or interpretation section","No conditional logic, exceptions, or procedural steps","Minimal cross-references (only historical context referencing CAR 37A and CASR Part 39)"],"plain_english_summary":"**What this is:** This document officially cancels a previous aviation safety rule (Airworthiness Directive AD/GENERAL/55) that required inspections of directional gyros—the flight instruments that tell pilots which direction they are heading.\n\n**What it does:** It permanently ends the requirement for aircraft owners and operators to carry out specific inspections on directional gyros. The cancellation took effect on 25 October 2007.\n\n**Why it matters:** The one-off safety issue that prompted the original rule has been resolved. The necessary maintenance procedures for these instruments (specifically regarding operations in different hemispheres) are now properly covered in standard aircraft maintenance manuals rather than being mandated by a separate regulation. This removes redundant red tape for aircraft operators while maintaining safety standards through existing maintenance protocols."}},"importantCases":[],"_links":{"self":"/api/acts/ad-general-55-amdt-2-directional-gyros-inspection-cancelled","history":"/api/acts/ad-general-55-amdt-2-directional-gyros-inspection-cancelled/history","analysis":"/api/acts/ad-general-55-amdt-2-directional-gyros-inspection-cancelled/analysis","conflicts":"/api/acts/ad-general-55-amdt-2-directional-gyros-inspection-cancelled/conflicts","importantCases":"/api/acts/ad-general-55-amdt-2-directional-gyros-inspection-cancelled/important-cases","documents":"/api/acts/ad-general-55-amdt-2-directional-gyros-inspection-cancelled/documents"}}