{"id":"F2006B08059","name":"AD/CESSNA 208/7 - Flap Bellcrank","slug":"ad-cessna-208-7-flap-bellcrank","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115147,"registerId":"commonwealth-F2006B08059-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 208/7 - Flap Bellcrank","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Cessna 208 Series Aeroplanes\n\n \n\nAD/CESSNA 208/7 Flap Bellcrank 5/90 DM\n\nApplicability: Model 208 and 208A: S/N 20800001 to 20800173.\n\n \n\n208B: S/N 208B0001 to 208B0202.\n\n \n\nRequirement: Action in accordance with Cessna SB CAB 89-34.\n\n \n\nNote: FAA AD 90-05-01 refers.\n\n \n\nCompliance: Inspect within 50 hours time in service after 11 April 1990. If cracked or deformed replace prior to further flight. If welds are incomplete or omitted replace the bellcrank within the next 50 hours time in service.\n\n \n\nBackground:  The FAA has received reports of failure of this bellcrank which has led to sudden unexpected flap retraction. The failures have occurred due to incomplete welding during fabrication.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical defect in specific aircraft. It has not expanded beyond its original purpose of mandating inspection and replacement of a defective flap bellcrank component."},"complexity_factors":["Very short document (approximately 200 words)","Only 2 defined applicability ranges (serial number ranges for two aircraft variants)","Single requirement referencing an external technical document (Cessna SB CAB 89-34)","Simple conditional logic: inspect → if cracked/deformed replace immediately; if welds incomplete replace within 50 hours","No nested exceptions or cross-references to other legislation beyond a note about the corresponding FAA directive","Clear, specific compliance timeframe (50 hours time in service)"],"plain_english_summary":"This is an **Airworthiness Directive** (a mandatory safety order) issued by Australia's Civil Aviation Safety Authority for specific Cessna 208 aircraft models.\n\n**What it does:**\n- Requires owners/operators of certain Cessna 208 and 208A aircraft (serial numbers 20800001 to 20800173) and 208B aircraft (serial numbers 208B0001 to 208B0202) to inspect a specific part called the **flap bellcrank** (a mechanical lever that controls the flaps on the wings)\n\n**Why it matters:**\n- The US Federal Aviation Administration (FAA) discovered that some of these bellcranks were failing due to **incomplete welding during manufacturing**\n- When this part fails, the aircraft's flaps can suddenly retract unexpectedly — a serious safety hazard during takeoff or landing\n\n**What must be done:**\n- **Inspect** the flap bellcrank within 50 hours of flying time after 11 April 1990\n- **If cracked or deformed:** Replace it before flying again\n- **If welds are incomplete or missing:** Replace it within the next 50 hours of flying time\n\n**Who must follow this:**\n- Anyone operating the specific Cessna 208 aircraft models listed above\n- The directive references Cessna Service Bulletin CAB 89-34 for the exact inspection procedure"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive applies to the specified serial-numbered Cessna 208/208A/208B aeroplanes and requires inspection and replacement actions consistent with the referenced Cessna service bulletin. The directive references the FAA AD but sets its own Australian applicability and compliance timing; the scope as stated in this instrument is limited to the listed aircraft and the actions described (Applicability; Requirement; Compliance; Note)."},"complexity_factors":["Narrow technical focus limited to a single part (flap bellcrank) and specific serial-numbered airframes (Applicability)","Prescriptive, short compliance timing (inspect within 50 hours after 11 April 1990) but no technical inspection detail in the directive itself (Compliance; Requirement)","Reference to an external technical document (Cessna SB CAB 89-34) for inspection/repair procedures increases reliance on another source (Requirement)","Safety-critical judgments (cracked, deformed, incomplete/omitted welds) require maintenance expertise and may produce conservative replacement decisions (Compliance; Background)","Link to an FAA AD (Note) requires cross-referencing between regulatory documents for full context"],"plain_english_summary":"This directive requires owners/operators of specified Cessna 208/208A/208B serial-numbered aircraft to inspect the flap bellcrank and replace it if cracked, deformed, or improperly welded, following Cessna Service Bulletin CAB 89‑34. The first inspection was due within 50 hours’ time in service after 11 April 1990, and defects must be rectified before further flight.\n\nIt responds to reported bellcrank failures from incomplete welding; compliance imposes inspection, repair costs and possible downtime on operators while aiming to prevent sudden flap retraction."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-208-7-flap-bellcrank","history":"/api/acts/ad-cessna-208-7-flap-bellcrank/history","analysis":"/api/acts/ad-cessna-208-7-flap-bellcrank/analysis","conflicts":"/api/acts/ad-cessna-208-7-flap-bellcrank/conflicts","importantCases":"/api/acts/ad-cessna-208-7-flap-bellcrank/important-cases","documents":"/api/acts/ad-cessna-208-7-flap-bellcrank/documents"}}