{"id":"F2006B09285","name":"AD/DIAMOND/1 - Operational Limitation","slug":"ad-diamond-1-operational-limitation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53345,"registerId":"commonwealth-F2006B09285-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DIAMOND/1 - Operational Limitation","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nDiamond (HOAC) Series Aeroplanes\n\nAD/DIAMOND/1 Operational Limitation 9/97 DM\n\nApplicability: Diamond Aircraft Model DA 20 A1 “Katana” aircraft, with serial numbers 10002 through 10287.\n\nRequirement: 1. Install a placard on the cockpit instrument panel, in letters at least 2.54 mm (0.10 inch) high, in the vicinity of the existing limitations placard located above the airspeed indicator, to read:\n\nSPINS PROHIBITED\n\nA flight manual amendment is required.\n\n2. Modify the aircraft in accordance with the Accomplishment Instructions of Diamond Aircraft Service Bulletin DA20-53-01A, dated 5 June 1997.\n\nNote: Transport Canada Emergency AD CF-97-09 refers.\n\nCompliance: 1. Before further flight.\n\n2. Before 18 July 1997.\n\nThis airworthiness directive becomes effective on 18 June 1997.\n\nBackground: There has been an occurrence of a rudder pedal jam during a practice spin with a Katana aircraft. The jam was caused by the pilot’s shoe being caught between the rudder pedal and battery hardware.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive addressing a specific mechanical hazard. It has not expanded beyond its original purpose of preventing rudder pedal jam incidents in the specified aircraft model."},"complexity_factors":["Single, specific aircraft model and narrow serial number range (10002-10287)","Only two distinct requirements with clear deadlines","No defined terms section or interpretation provisions","No cross-references to other legislation (only references to manufacturer service bulletin and Canadian equivalent AD)","Straightforward conditional logic: if aircraft matches applicability, then compliance required","Background explanation included, reducing ambiguity about purpose"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's aviation safety regulator for specific aircraft.\n\n**What it does:**\n- **Targets:** Diamond DA 20 A1 \"Katana\" aeroplanes with serial numbers 10002 through 10287 (about 286 aircraft)\n- **Requires two safety fixes:**\n  1. **Immediate:** Install a cockpit placard (warning sign) saying \"SPINS PROHIBITED\" in letters at least 2.5mm high, placed near the airspeed indicator\n  2. **By 18 July 1997:** Modify the aircraft following specific manufacturer instructions (Service Bulletin DA20-53-01A) to fix a design flaw\n\n**Why it matters:**\nA pilot's shoe got trapped between the rudder pedal and battery hardware during a practice spin, jamming the controls. This could cause loss of control and crash. The AD prevents spins (where the problem occurs) immediately, then requires a permanent hardware fix.\n\n**Who must comply:**\n- Aircraft owners/operators of affected Katana models\n- Must be done before further flight (placard) and before deadline (modification)\n\n**Key point:** This is **not optional** — \"Before further flight\" means grounded until fixed."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"Scope remains as expressed in the instrument: it targets a defined subset of DA20 A1 aircraft (s/n 10002–10287) and mandates a placard, flight manual amendment, and the technical modification per the specified service bulletin within set deadlines. No expansion or narrowing beyond the printed applicability and requirements is made in this text."},"complexity_factors":["Narrow applicability to a specific model and serial-number range (DA20 A1, s/n 10002–10287) limits regulatory reach but requires serial verification.","Two-step compliance: immediate placard/flight-manual amendment before next flight (Requirement 1; Compliance) and technical modification by a fixed date (Requirement 2; Compliance).","Modification is defined by an external document (Diamond Service Bulletin DA20-53-01A), creating dependency on manufacturer instructions for execution and inspection.","Operational restriction (SPINS PROHIBITED) alters pilot behaviour and training/operations until modification is done.","Compliance timing is short (placard before further flight; modification by 18 July 1997), creating potential scheduling and grounding costs for owners/operators.","Source references an related foreign emergency AD (Transport Canada Emergency AD CF-97-09), indicating cross-jurisdictional coordination but no additional domestic procedural steps in the text."],"plain_english_summary":"Requires owners/operators of Diamond Aircraft DA20 A1 “Katana” serials 10002–10287 to fit a cockpit placard reading “SPINS PROHIBITED”, amend the flight manual, and carry out a modification per Diamond Service Bulletin DA20-53-01A. The placard must be fitted before the next flight and the modification completed by 18 July 1997 (Requirement 1–2; Compliance). The action responds to a rudder-pedal jam caused by a pilot’s shoe; owners bear the cost and maintenance organisations perform the modification."}},"importantCases":[],"_links":{"self":"/api/acts/ad-diamond-1-operational-limitation","history":"/api/acts/ad-diamond-1-operational-limitation/history","analysis":"/api/acts/ad-diamond-1-operational-limitation/analysis","conflicts":"/api/acts/ad-diamond-1-operational-limitation/conflicts","importantCases":"/api/acts/ad-diamond-1-operational-limitation/important-cases","documents":"/api/acts/ad-diamond-1-operational-limitation/documents"}}