{"id":"F2006B05676","name":"AD/PA-30/34 Amdt 1 - Main Landing Gear Side Brace Stud","slug":"ad-pa-30-34-amdt-1-main-landing-gear-side-brace-stud","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135422,"registerId":"commonwealth-F2006B05676-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-30/34 Amdt 1 - Main Landing Gear Side Brace Stud","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 revokes Airworthiness Directive (AD) AD/PA-30/34 and issues the following AD under subregulation 39.1 (1) of CAR 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\nPiper PA-30 & 39 (Twin Comanche) Series Aeroplanes\n\nAD/PA-30/34\n\nAmdt 1\n\n  \nMain Landing Gear Side Brace Stud 9/2002\n\nApplicability: Models PA30 and PA39 aircraft.\n\nRequirement: Remove both the left and right main gear side brace studs from the aircraft in accordance with the instructions contained in the Landing Gear section of the maintenance manual, and inspect each main gear side brace stud for cracks using fluorescent penetrant or magnetic particle inspection methods. Figure 1 of this Directive depicts the area where the sidebrace stud is to be inspected.\n\n![](image.002.jpeg)  \n\nFigure 1\n\nPiper PA-30 & 39 (Twin Comanche) Series Aeroplanes\n\nAD/PA-30/34 Amdt 1 (continued)\n\nThis figure is provided to depict the area of the sidebrace stud to be inspected. This is not intended to represent the configuration of all models affected.\n\nNote 1: All affected Models PA30 and PA39 aircraft were equipped at manufacture with part number 22512-00 main gear side brace studs.\n\nFor any main gear side brace stud found cracked, replace the cracked stud with an approved serviceable part in accordance with the instructions contained in the Landing Gear section of the applicable maintenance manual.\n\nNote 2: FAA AD 97-01-01 R1 Amdt 39-10864 refers.\n\nCompliance: Within the next 100 hours time in service after 4 January 1996, and thereafter at intervals not to exceed 1,000 hours time in service.\n\nThe original compliance times of this Airworthiness Directive are unchanged by this amendment.\n\nThis amendment becomes effective on 5 September 2002.\n\nBackground: The FAA received reports of main gear side brace stud cracks, including seven incidents where the main landing gear collapsed. The actions specified by this Directive are intended to prevent a main gear collapse caused by main gear side brace stud cracks, which could result in loss of control of the aircraft during landing operations.\n\nAmendment 1 updates the FAA AD reference.\n\nThe original issue of this Airworthiness Directive became effective on 4 January 1996.\n\n![](image.003.jpeg)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 23 July 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 14 August 2002.","sortOrder":0}],"analysis":{"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":3,"scope_assessment":{"changed":false,"description":"Amendment 1 only updates the FAA AD reference; the required inspection, removal, replacement actions, applicability to PA‑30/PA‑39 and the original compliance intervals remain unchanged. The amendment sets an effective date (5 September 2002) but does not broaden or narrow the AD's operational scope or obligations."},"complexity_factors":["Technical non‑destructive inspection methods required (fluorescent penetrant or magnetic particle)","Physical removal of studs before inspection increases labour and downtime","Replacement with an \"approved serviceable part\" requires parts procurement and possible certification","Compliance timing: initial 100‑hour window and recurring 1,000‑hour intervals impose recurrent maintenance planning","Cross‑reference to FAA AD and reliance on the aircraft maintenance manual for procedure details","Applicability limited to specific models and a single part number (22512‑00), so tracking affected fleet is straightforward"],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Piper PA‑30 and PA‑39 aircraft to remove and inspect both main landing‑gear side‑brace studs for cracks using fluorescent penetrant or magnetic particle inspection, and to replace any cracked stud with an approved serviceable part. It mandates an initial inspection within 100 hours time in service from 4 January 1996 and repeat inspections every 1,000 hours. The CASA delegate issued the amendment to update the FAA AD cross‑reference; the inspection, removal and replacement work (and its cost) falls on aircraft owners/operators and must follow the maintenance manual."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment maintains the exact same scope as the original 1996 directive. The only change is updating the FAA AD reference number (Note 2). The applicability (which aircraft), requirements (what must be done), and compliance times (when it must be done) are all unchanged. The document explicitly states: \"The original compliance times of this Airworthiness Directive are unchanged by this amendment.\""},"complexity_factors":["Single, specific mechanical component addressed (main landing gear side brace stud)","Only two aircraft models affected (PA-30 and PA-39)","Straightforward three-step requirement: remove, inspect, replace if cracked","Simple compliance schedule: initial 100 hours, then recurring 1,000 hours","Minimal cross-referencing (only one FAA AD reference and maintenance manual citations)","No nested exceptions or conditional logic — applies uniformly to all affected aircraft","Short document (approximately 400 words of substantive text)"],"plain_english_summary":"This CASA Airworthiness Directive mandates inspection and replacement of the left and right main landing‑gear side‑brace studs on Piper PA‑30 and PA‑39 Twin Comanches, using fluorescent penetrant or magnetic particle crack detection, with the first check within 100 flight hours and repeats every 1,000 hours. It affects owners/operators because cracked studs have caused seven gear collapses, risking loss of control and serious injury.\n\nThis amendment only updates the referenced FAA directive; the safety requirements and times remain unchanged."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-30-34-amdt-1-main-landing-gear-side-brace-stud","history":"/api/acts/ad-pa-30-34-amdt-1-main-landing-gear-side-brace-stud/history","analysis":"/api/acts/ad-pa-30-34-amdt-1-main-landing-gear-side-brace-stud/analysis","conflicts":"/api/acts/ad-pa-30-34-amdt-1-main-landing-gear-side-brace-stud/conflicts","importantCases":"/api/acts/ad-pa-30-34-amdt-1-main-landing-gear-side-brace-stud/important-cases","documents":"/api/acts/ad-pa-30-34-amdt-1-main-landing-gear-side-brace-stud/documents"}}