{"id":"F2013L01791","name":"AD/TSA-600/39 Amdt 3 - Main Cabin Upper Door","slug":"ad-tsa-600-39-amdt-3-main-cabin-upper-door","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":127877,"registerId":"commonwealth-F2013L01791-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/TSA-600/39 Amdt 3 - Main Cabin Upper Door","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 20.2\ntitle: AIRCRAFT\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\n \n\nAIRWORTHINESS DIRECTIVE\n\nOn the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/TSA-600/39 Amdt 2 under subregulation 39.001 (1) of CASR 1998 and subsection 33 (3) of the Acts Interpretation Act 1901, and issues the following AD under subregulation 39.001 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct an unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\n| AD/TSA-600/39 Amdt 3 | Main Cabin Upper Door | 21/2013 |\n| --- | --- | --- |\n\n\n \n\n| Applicability: | This AD applies to each Ted Smith Aerostar, Piper Aerostar or Aerostar Aircraft model 600, 601, 601P, 602P and 700P aeroplane with a serial number (S/N) listed in Piper Mandatory Service Bulletin (SB) 908, dated 3 May 1989. |\n| --- | --- |\n| Requirement: | 1. The registered operator of the aircraft must inspect and rig the cabin door and latch system in accordance with Chapter 52 of the Aerostar Maintenance Manual and Instruction I of Piper Mandatory SB 908.
2. The registered operator of the aircraft must install cabin door placards in accordance with Instruction II of Piper Mandatory SB 908. Operating instructions for emergency exits (which include entrance doors) in aircraft with a seating capacity of more than 6 persons must comply with subregulation 90.135 (6) of CASR 1998.
3. The registered operator of the aircraft must modify the cabin door latching system by installation of a door ajar warning system in accordance with Instruction III of Piper Mandatory SB 908 or an equivalent method approved by CASA.
Note: FAA AD 89-03-04 refers to Requirements 1, 2 and 3.
4. For:
(a) model 600 aeroplanes with S/N from 60-0001-003 to 60-0933-8161262 inclusive; and
(b) model 601 aeroplanes with S/N from 61-0001-004 to 61-0880-8162157 inclusive;
the registered operator of the aircraft must install cabin door linkage modification kit Piper part number 765-387 in accordance with Instruction IV of Piper Mandatory SB 908. |\n| Compliance: | 1. The registered operator must take the action in Requirement 1:
(a) unless already taken in accordance with AD/TSA-600/39, AD/TSA-600/39 Amdt 1, or AD/TSA-600/39 Amdt 2 (a previous AD), by the later of the following:
(i) 100 hours time in service after 20 April 1989;
(ii) the next scheduled inspection for issue of a maintenance release after 20 April 1989; and |\n| | (b) at intervals not exceeding 12 calendar months from compliance with paragraph (a) or a previous AD.
2. & 3. The registered operator must take the action in Requirements 2 and 3, unless already taken in accordance with a previous AD, by the later of the following:
(a) 100 hours time in service after 20 April 1989;
(b) the next scheduled inspection for issue of a maintenance release after 20 April 1989.
4. The registered operator must take the action in Requirements 4, unless already taken in accordance with a previous AD, by the later of the following:
(a) 100 hours time in service after 7 September 1989;
(b) the next scheduled inspection for issue of a maintenance release after 7 September 1989. |\n| | The effective date of this AD is 18 October 2013. |\n| Background: | There have been reports from overseas of accidents or incidents that have occurred because of a failure to ensure that the cabin door was closed and latched prior to take‑off and improper door latching due to mis-rigging of the latch system. Amendment 1 to this AD drew attention to Emergency Exit Opening instructions luminosity requirements, for aircraft with more than 6 persons seating capacity.
Amendment 2 referenced the latest requirement document which superseded both previous documents and required, for some aircraft, the fitting of a door latch improvement kit and, for all aircraft, a repetitive inspection of doors and mechanisms.
Amendment 3 updates the reference for Emergency Exit Opening instructions luminosity requirements, which is now set out in subregulation 90.135 (6) of CASR 1998. |\n\n\n\n\nMike Higgins Delegate of the Civil Aviation Safety Authority\n\n8 October 2013\n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":6,"scope_assessment":{"changed":true,"description":"Amendment 3 revokes AD/TSA-600/39 Amdt 2 and reissues the AD while retaining the substantive requirements to inspect/rig doors, install placards and a door-ajar warning, and fit a linkage kit for certain serials. The explicit scope change is an update to the normative reference for Emergency Exit Opening instructions luminosity requirements, now citing subregulation 90.135(6) of CASR 1998 (Background). Mechanically, the AD continues prior obligations but replaces the previous reference and formalises the reissued AD status (opening paragraph; Background; Requirement 2)."},"complexity_factors":["Multiple specific aircraft models and serial-number ranges create targeted applicability (Applicability; Requirement 4).","Several distinct mandatory actions (inspect/rig, install placards, install warning system, install linkage kit) increase task variety and coordination (Requirement 1–4).","Deadlines tied to flight hours and the 'next scheduled inspection for issue of a maintenance release' create mixed temporal triggers for compliance (Compliance paragraphs).","Repetitive inspection interval requirement (annual maximum) imposes ongoing compliance costs and record-keeping (Compliance 1(b)).","Dependency on external technical documents: Aerostar Maintenance Manual Chapter 52 and Piper Mandatory SB 908 dictate procedures and parts (Requirement 1; Requirement references).","CASA discretion to accept 'an equivalent method' for the door-ajar warning introduces approval uncertainty and administrative interaction (Requirement 3).","Reference to a specific parts kit (Piper part number 765-387) requires sourcing and possible retrofitting logistics for affected serial ranges (Requirement 4).","Cross-references to other regulations (subregulation 90.135(6) CASR 1998) shift normative standards for placard/luminosity requirements and require regulatory interpretation (Requirement 2; Background).","The instrument revokes and reissues a prior AD, which can affect traceability of compliance history and legal status of prior actions (opening paragraph).","Technical safety inspections and rigging demand qualified maintenance personnel, creating skill and certification constraints on who can comply (Requirement 1; Compliance timing)."],"plain_english_summary":"This Airworthiness Directive requires operators of specified Ted Smith / Piper Aerostar 600, 601, 601P, 602P and 700P aeroplanes (S/Ns listed in Piper Mandatory SB 908) to inspect and rig cabin doors and latches, install door placards, fit a door-ajar warning (or a CASA‑approved equivalent) and, for certain serial ranges, install a door linkage kit. Compliance is tied to 100 hours time‑in‑service or the next maintenance release, with recurring inspections. CASA cites overseas incidents of unlatched doors as the reason; operators pay for inspections, modifications and any approvals."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":true,"description":"The original AD (implied by Amendment 1 and 2 references) appears to have started as a response to door closure failures. Amendment 1 added emergency exit luminosity requirements for aircraft with more than 6 seats. Amendment 2 expanded this to require door latch improvement kits for some aircraft and repetitive inspections for all. Amendment 3 updates regulatory references again. The directive has evolved from a simple door inspection order to a comprehensive system involving: periodic inspections, placards, warning systems, hardware modifications for specific models, and emergency exit lighting compliance — significantly broadening beyond the original 'ensure door is closed' problem."},"complexity_factors":["Multiple cross-references to external documents (Piper Mandatory Service Bulletin 908, FAA AD 89-03-04, Aerostar Maintenance Manual Chapter 52)","Four distinct requirements with different applicability and compliance dates","Conditional logic for compliance ('unless already taken in accordance with a previous AD')","Specific serial number ranges for Requirement 4 creating a subset of affected aircraft","Dual compliance triggers for most requirements (flight hours OR scheduled inspection, whichever is later)","Nested sub-paragraphs in Requirement 4 (model and serial number conditions)","Reference to CASR subregulations (39.001(1), 90.135(6)) and Acts Interpretation Act 1901","Repetitive inspection requirement (12-monthly intervals) creating ongoing obligations"],"plain_english_summary":"This mandatory CASA Airworthiness Directive requires owners/operators of specified Ted Smith/Piper Aerostar models to ensure cabin doors and latches are inspected/adjusted, warning placards and a door-ajar warning are fitted, and—for certain older serial numbers—a linkage modification is installed to prevent doors opening in flight.\n\nIt affects operators listed in Piper Service Bulletin 908 (private owners, schools, charter, maintenance). Issued after overseas incidents, it carried short compliance deadlines from April 1989 and requires annual door inspections."}},"importantCases":[],"_links":{"self":"/api/acts/ad-tsa-600-39-amdt-3-main-cabin-upper-door","history":"/api/acts/ad-tsa-600-39-amdt-3-main-cabin-upper-door/history","analysis":"/api/acts/ad-tsa-600-39-amdt-3-main-cabin-upper-door/analysis","conflicts":"/api/acts/ad-tsa-600-39-amdt-3-main-cabin-upper-door/conflicts","importantCases":"/api/acts/ad-tsa-600-39-amdt-3-main-cabin-upper-door/important-cases","documents":"/api/acts/ad-tsa-600-39-amdt-3-main-cabin-upper-door/documents"}}