{"id":"F2006B02027","name":"AD/AA-1/16 - Structural and Control Surface Bondlines - Inspection","slug":"ad-aa-1-16-structural-and-control-surface-bondlines-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41249,"registerId":"commonwealth-F2006B02027-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AA-1/16 - Structural and Control Surface Bondlines - Inspection","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-description: CASA Airworthiness Directive\nmeta-generator: Aspose.Words for .NET 22.10.0\nmeta-keywords: Issue 9/1976,Aircraft below 5700 kg,Gulfstream (Grumman American/ American Aviation) AA-1 Series Aeroplanes,Structural and Control Surface Bondlines - Inspection,16\ntitle: Airworthiness Directive - AD/AA-1/16 - Structural and Control Surface Bondlines - Inspection\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Gulfstream (Grumman American/ American Aviation) AA-1 Series Aeroplanes\n\n \n\nAD/AA-1/16 Structural and Control Surface Bondlines - Inspection\n\n\n9/76\n\n \n\nApplicability: All models AA1 and AA1A with S/Nos. 0001 and subsequent and all model AA1B with S/Nos. 0001 to 0641.\n\n \n\nDocument: 1. Grumman American SB No. 155; or 2. FAA AD 76-17-03.\n\nCompliance: Within 25 hours’ time in service after 21 September 1976 and there- after at intervals not exceeding 100 hours’ time in service until modified in accordance with SB No.\n\n155.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The document prescribes inspections and recurring intervals until modification per SB No.155 (or FAA AD 76‑17‑03). The AD text itself contains no indication the scope was altered from its original prescription."},"complexity_factors":["Narrow applicability limited to specific models and serial numbers (straightforward scope)","Fixed compliance timing: initial 25 hours after a specific historical date, then 100‑hour recurrent intervals","Termination of repetitive inspections only by following an external document (Grumman American SB No.155) or FAA AD reference","Minimal technical detail in the AD text itself — reliance on referenced service bulletin for procedural specifics","Compliance cost falls on individual owners/operators (inspection and modification), creating a dispersed economic burden","Historical compliance date (21 September 1976) may require interpretive clarity for records and late compliance"],"plain_english_summary":"**What this does:** Requires owners/operators of Gulfstream (Grumman American/American Aviation) AA‑1 series aeroplanes (specified serial numbers) to inspect structural and control‑surface bondlines. **Who it affects and why it matters:** Applies to AA‑1/AA‑1A from S/N 0001 onward and AA‑1B S/N 0001–0641; inspections must occur within 25 hours' time‑in‑service after 21 September 1976 and then every 100 hours until the aeroplane is modified per Grumman American SB No.155 (or FAA AD 76‑17‑03). Owners/operators bear inspection and modification costs; CASA requires compliance."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive focused on a specific airworthiness issue in a specific aircraft type. It has not expanded beyond its original purpose of mandating inspections for bondline integrity."},"complexity_factors":["Very short document (approximately 150 words of substantive content)","Only 3 defined applicability criteria (model types and serial number ranges)","Single compliance requirement with clear time trigger (25 hours) and interval (100 hours)","One termination condition (modification per SB No. 155)","No cross-references to other legislation beyond the enabling Civil Aviation Regulations 1998","No nested exceptions or conditional logic","Straightforward reference to external technical documents (FAA AD and manufacturer service bulletin)"],"plain_english_summary":"This CASA Airworthiness Directive mandates owners/operators of Gulfstream AA‑1 series light aircraft (AA‑1/AA‑1A all serials; AA‑1B s/n 0001–0641) to inspect structural glued joints (“bondlines”) to prevent bond failure and loss of control. Initial inspection is required within 25 flight hours after 21 Sep 1976, then every 100 flight hours until the aircraft is modified per Grumman American Service Bulletin No. 155. The AD adopts an FAA finding and targets a critical inflight safety hazard."}},"importantCases":[],"_links":{"self":"/api/acts/ad-aa-1-16-structural-and-control-surface-bondlines-inspection","history":"/api/acts/ad-aa-1-16-structural-and-control-surface-bondlines-inspection/history","analysis":"/api/acts/ad-aa-1-16-structural-and-control-surface-bondlines-inspection/analysis","conflicts":"/api/acts/ad-aa-1-16-structural-and-control-surface-bondlines-inspection/conflicts","importantCases":"/api/acts/ad-aa-1-16-structural-and-control-surface-bondlines-inspection/important-cases","documents":"/api/acts/ad-aa-1-16-structural-and-control-surface-bondlines-inspection/documents"}}