{"id":"F2006B05140","name":"AD/CESSNA 185/48 - Upper Shoulder Harness Adjuster Spring","slug":"ad-cessna-185-48-upper-shoulder-harness-adjuster-spring","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":45206,"registerId":"commonwealth-F2006B05140-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 185/48 - Upper Shoulder Harness Adjuster Spring","content":"![](image.001.png)\n\n![](image.001.png)  \nAIRWORTHINESS DIRECTIVE\n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (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 the 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![](image.001.png)  \n\nCessna 185 Series Aeroplanes\n\nAD/CESSNA 185/48 Upper Shoulder Harness\n\nAdjuster Spring\n\n  \n13/2004\n\nApplicability: Models 185, 185A, 185B, 185C, 185D, 185E, and A185E aircraft, with serial numbers listed in Cessna Single Engine Service Bulletin (SB) SEB86-8 Revision 1, dated 28 July 2003.\n\nRequirement: 1. Inspect only the upper shoulder harness adjuster (part number 443030-401) for the presence of a retainer spring, in accordance with SB SEB86-8 Revision 1.\n\nIf a retainer spring is found during the above inspection of the upper shoulder harness adjuster (part number 443030-401), before further flight, remove the spring by cutting each side, and stamp out the -401 identification number; in accordance with SB SEB86-8 Revision 1.\n\nIf a retainer spring is not found during the above inspection of the upper shoulder harness adjuster (part number 443030-401), before further flight, make an entry in the aircraft log book showing compliance with this Directive.\n\n2. Only incorporate Cessna Accessory Kits that have been identified, inspected, and modified in accordance with the Requirement document.\n\nNote: FAA AD 2004-19-01 Amdt 39-13795 refers.\n\nCompliance: 1. Within the next 25 hours time in service or at the next annual inspection after 23 December 2004, whichever occurs first.\n\n2. As of the effective date of this Directive.\n\nNote: Compliance with SB SEB86-8 original issue, dated 21 November 1986, constitutes terminating action for the requirements of this Directive, if shoulder harness adjuster part number 443030-401 was used.\n\nThis Airworthiness Directive becomes effective on 23 December 2004.\n\nCessna 185 Series Aeroplanes\n\nAD/CESSNA 185/48 (continued)\n\nBackground: The manufacturer determined that some of the shoulder harness belt adjusters included in the affected shoulder harness accessory kits may have had a small wire spring inadvertently installed on the belt friction pin. The actions required by this Directive are intended to prevent slippage of the pilot/co-pilot shoulder harness, which could result in failure of the shoulder harness to maintain proper belt length adjustment and tension.\n\n![](image.002.png)  \n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority 12 November 2004\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 1 December 2004.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope. It addresses a specific manufacturing defect in a single shoulder harness component for a limited range of Cessna 185 aircraft. The terminating action provision (compliance with the 1986 service bulletin) does not expand scope but rather provides an alternative compliance path for aircraft already modified."},"complexity_factors":["Single, specific mechanical defect addressed (one part number: 443030-401)","Straightforward binary inspection outcome (spring present or not)","Clear compliance deadline with simple alternative timing","Only 7 aircraft models affected, with serial numbers referenced externally","Minimal cross-referencing (one FAA AD mentioned in a note, one service bulletin for instructions)","No nested conditions or exceptions beyond the terminating action note"],"plain_english_summary":"This safety order requires owners/operators of certain Cessna 185-series aircraft (specific serials per the manufacturer bulletin) to inspect the pilot’s upper shoulder-harness adjuster. If a small wire spring is present, it must be removed before flight; if not, the finding must be logged. The spring can allow the harness to slip and fail in a crash, increasing injury risk. Inspection is due within 25 flight hours or at the next annual inspection after 23 Dec 2004."},"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"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The Directive implements the manufacturer's identified corrective measure for a specific part and set of serial numbers and does not broaden applicability beyond that remedy. It requires the inspection/removal actions and logbook entry described in the service bulletin and offers the original SB as a terminating action (Background; Requirement; Note)."},"complexity_factors":["Narrow technical scope: applies only to specific Cessna 185 models and serial numbers (Applicability).","Single, prescriptive corrective action: inspect and remove spring or record compliance; low procedural discretion (Requirement).","Cross-reference to manufacturer's service bulletin for inspection/modification details increases reliance on external document (Requirement references SB SEB86-8 Rev 1).","Short, specific compliance window creates operational scheduling constraint (Compliance: within 25 hours TIS or next annual inspection).","Terminating action and accessory-kit limitation depend on prior compliance with original service bulletin, creating conditional closure of the AD (Note)."],"plain_english_summary":"Mandates inspection of the upper shoulder harness adjuster (p/n 443030-401) on listed Cessna 185 aircraft for an unintended retainer spring; if present, operators must cut out the spring and deface the -401 mark, and record compliance. It affects aircraft owners, operators and maintenance organisations and requires action within 25 flight hours or by the next annual inspection; only accessory kits inspected and modified per the Cessna service bulletin may be incorporated."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-185-48-upper-shoulder-harness-adjuster-spring","history":"/api/acts/ad-cessna-185-48-upper-shoulder-harness-adjuster-spring/history","analysis":"/api/acts/ad-cessna-185-48-upper-shoulder-harness-adjuster-spring/analysis","conflicts":"/api/acts/ad-cessna-185-48-upper-shoulder-harness-adjuster-spring/conflicts","importantCases":"/api/acts/ad-cessna-185-48-upper-shoulder-harness-adjuster-spring/important-cases","documents":"/api/acts/ad-cessna-185-48-upper-shoulder-harness-adjuster-spring/documents"}}