{"id":"F2006B05613","name":"AD/PA-28/56 - Quick-Disconnect Seat Retention Mechanism - Inspection","slug":"ad-pa-28-56-quick-disconnect-seat-retention-mechanism-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135240,"registerId":"commonwealth-F2006B05613-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-28/56 - Quick-Disconnect Seat Retention Mechanism - Inspection","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\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)  Piper PA-28 Series Aeroplanes\n\n \n\nAD/PA-28/56 Quick-Disconnect Seat Retention Mechanism - Inspection\n\nApplicability:  Model PA-28-180 with S/Nos. 28-7105001 to 28-7505046.\n\n \n\nModel PA-28R-180 with S/Nos. 28R-7130001 to 28R-7130013. Model PA-28R-200 with S/Nos. 28R-7135001 to 28R-7535041. Model PA-28-235 with S/Nos. 28-7110001 to 28-7510016.\n\nDocument: Piper SL No. 763.\n\n \n\nCompliance:   Within 100 hours time in service after 30 January 1976.\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\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n\n1/76\n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical defect in specific aircraft. It has not expanded beyond its original purpose of ensuring seat retention mechanism integrity in affected Piper PA-28 variants."},"complexity_factors":["Very short document (under 200 words)","Only 4 specific aircraft models affected with precise serial number ranges","Single compliance action (inspection per Piper Service Letter 763)","No defined terms section","No cross-references to other legislation beyond the enabling Civil Aviation Regulations 1998","Simple temporal compliance requirement (100 hours time in service after fixed date)","No exceptions, exemptions, or conditional logic"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998.\n\n**What it does:** It requires owners and operators of specific Piper PA-28 series aircraft to inspect the \"quick-disconnect seat retention mechanism\" — that's the locking system that keeps the pilot and passenger seats secured to the floor. The inspection must follow Piper Service Letter No. 763.\n\n**Who it affects:** Owners and operators of specific Piper Cherokee aircraft with these exact serial numbers:\n- **PA-28-180** (S/N 28-7105001 to 28-7505046)\n- **PA-28R-180** (S/N 28R-7130001 to 28R-7130013) — the retractable gear version\n- **PA-28R-200** (S/N 28R-7135001 to 28R-7535041) — another retractable gear variant\n- **PA-28-235** (S/N 28-7110001 to 28-7510016) — the more powerful Cherokee Pathfinder/Dakota\n\n**Why it matters:** Seat retention failures are serious safety risks. If the quick-disconnect mechanism fails, seats could shift or detach during flight — particularly dangerous during turbulence, takeoff, or landing. This AD ensures a known defect gets checked before it causes an accident.\n\n**When compliance was required:** Within 100 hours of flight time after 30 January 1976 (so this is long historical, but remains on the books for aircraft still operating)."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"Based on the supplied text, there is no indication the scope has changed from the instrument's original terms. The directive lists specific models and serial-number ranges (Applicability), sets a single compliance requirement (an inspection) with a deadline in hours time in service after 30 January 1976 (Compliance), and references Piper SL No. 763 for technical detail (Document: Piper SL No. 763). The supplied text contains no amendment history or alternative scope language."},"complexity_factors":["Single, narrowly framed mandatory action (one inspection) reduces substantive legal complexity.","Applicability defined by multiple models and several serial-number ranges requires precise serial-number checks to determine coverage (Applicability).","Compliance deadline measured in hours time in service (not calendar days) requires record-keeping of flight/engine hours (Compliance).","The AD refers to an external technical document (Piper SL No. 763) for procedural details, so implementers must obtain that document to know exact inspection steps (Document: Piper SL No. 763).","Historical compliance deadline tied to a specific date (30 January 1976) may complicate retrospective application for record reconciliation (Compliance)."],"plain_english_summary":"This Airworthiness Directive mandates an inspection of the quick‑disconnect seat retention mechanism on specified Piper PA‑28 series aircraft (listed by model/serial range) to be completed within 100 hours TIS after 30 January 1976. The AD refers to Piper SL No. 763 for technical procedures.\n\nOwners/operators are responsible for compliance and will bear inspection, repair and downtime costs; maintenance organizations perform the work and must consult the referenced Piper document for inspection criteria."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-28-56-quick-disconnect-seat-retention-mechanism-inspection","history":"/api/acts/ad-pa-28-56-quick-disconnect-seat-retention-mechanism-inspection/history","analysis":"/api/acts/ad-pa-28-56-quick-disconnect-seat-retention-mechanism-inspection/analysis","conflicts":"/api/acts/ad-pa-28-56-quick-disconnect-seat-retention-mechanism-inspection/conflicts","importantCases":"/api/acts/ad-pa-28-56-quick-disconnect-seat-retention-mechanism-inspection/important-cases","documents":"/api/acts/ad-pa-28-56-quick-disconnect-seat-retention-mechanism-inspection/documents"}}