{"id":"F2006B05348","name":"AD/P68/20 Amdt 1 - Flap Bellcrank Attachment Mounting Brackets - Inspection and Modification","slug":"ad-p68-20-amdt-1-flap-bellcrank-attachment-mounting-brackets-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":45859,"registerId":"commonwealth-F2006B05348-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/P68/20 Amdt 1 - Flap Bellcrank Attachment Mounting Brackets - Inspection and Modification","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)  \nPartenavia P68 Series Aeroplanes\n\nAD/P68/20\n\nAmdt 1\n\n  \n\nFlap Bellcrank Attachment Mounting Brackets \\- Inspection and Modification\n\n  \n3/83\n\nApplicability: All models P68, P68B, P68C, P68C-TC and P68 observer aircraft with S/Nos. to 277\\. Document: Partenavia SB 56. Note: R.A.I. AD No. 82-228/P68-27 Rev. 1 refers.\n\nCompliance: 1. Unless already accomplished, inspect within 10 hours time in service after 22 September, 1982 for aircraft with more than 500 hours time in service.\n\n2. Repeat inspection at intervals not exceeding 100 hours time in service until modified.\n\nModify within 500 hours time in service after 31 March, 1983.\n\nBackground: Cracks in the area of the bellcrank attachment hole have been reported.\n\nThis AD has been amended to reference the service bulletin and modification requirements.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is Amendment 1 to an existing Airworthiness Directive. The amendment note states it was updated 'to reference the service bulletin and modification requirements' — a minor administrative clarification that does not expand the scope beyond the original safety purpose of addressing cracked flap bellcrank brackets."},"complexity_factors":["Very short document (approximately 150 words)","Only 2 defined terms implicitly used ('time in service' and 'S/Nos' [serial numbers])","No cross-references to other legislation sections","Simple conditional logic: only two compliance paths based on aircraft hours and modification status","Single technical reference to external service bulletin","No nested exceptions or layered definitions"],"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). Think of it as a \"recall notice\" for aircraft, but legally binding.\n\n**What it does:** It requires owners and operators of specific Partenavia P68 aircraft to **inspect and modify the flap bellcrank attachment mounting brackets** — metal parts that connect the aircraft's flaps (the moving surfaces on the wings that help control lift during takeoff and landing) to the control system.\n\n**Who it affects:** All Partenavia P68 series aircraft with serial numbers up to 277, including models P68, P68B, P68C, P68C-TC, and P68 Observer.\n\n**What must be done:**\n- **Inspection:** If not already done, aircraft with more than 500 flight hours must be inspected within 10 flight hours after 22 September 1982. After that, inspections must repeat every 100 flight hours until the modification is done.\n- **Modification:** The permanent fix must be installed within 500 flight hours after 31 March 1983.\n\n**Why it matters:** Cracks have been found around the bellcrank attachment hole. If these cracks aren't caught and fixed, the flap control system could fail — potentially causing loss of control during critical phases of flight like landing.\n\n**Key reference:** The directive points to Partenavia Service Bulletin 56 for technical details on how to perform the work."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The AD text states it \"has been amended to reference the service bulletin and modification requirements,\" which alters the instrument from an earlier form by adding an explicit reference to Partenavia SB 56 and by specifying the modification requirement and timing. (Final sentence; Document)"},"complexity_factors":["Clear, short set of mandatory actions with specific time limits (inspect within 10 hours; repeat every 100 hours; modify within 500 hours). (Compliance)","Applicability limited to specific models and serial-number range, which reduces scope but requires serial-number checking. (Applicability)","Reference to an external technical document (Partenavia SB 56) for inspection/modification methods adds a dependency on another source. (Document)","Two-stage regime (temporary recurring inspections until a defined modification is completed) creates operational scheduling complexity. (Compliance: 2)","Dates and hour-based thresholds anchored to historical dates and service-hour milestones introduce potential for interpretation errors if records are incomplete. (Compliance)"],"plain_english_summary":"This AD requires owners/operators of specified Partenavia P68 series aeroplanes (serials up to 277) to inspect and then modify the flap bellcrank attachment mounting brackets—per Partenavia SB 56—because of reported cracking. Inspections start quickly for aircraft over 500 hours and repeat regularly until the modification is completed within a set time window. Owners/operators bear inspection and modification costs and will incur recurring inspection workload and aircraft downtime until the one‑time modification is done."}},"importantCases":[],"_links":{"self":"/api/acts/ad-p68-20-amdt-1-flap-bellcrank-attachment-mounting-brackets-inspection-and-modification","history":"/api/acts/ad-p68-20-amdt-1-flap-bellcrank-attachment-mounting-brackets-inspection-and-modification/history","analysis":"/api/acts/ad-p68-20-amdt-1-flap-bellcrank-attachment-mounting-brackets-inspection-and-modification/analysis","conflicts":"/api/acts/ad-p68-20-amdt-1-flap-bellcrank-attachment-mounting-brackets-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-p68-20-amdt-1-flap-bellcrank-attachment-mounting-brackets-inspection-and-modification/important-cases","documents":"/api/acts/ad-p68-20-amdt-1-flap-bellcrank-attachment-mounting-brackets-inspection-and-modification/documents"}}