{"id":"F2006B05146","name":"AD/CESSNA 188/11 - Throttle Bellcrank","slug":"ad-cessna-188-11-throttle-bellcrank","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":45227,"registerId":"commonwealth-F2006B05146-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 188/11 - Throttle 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 188 (Agwagon) Series Aeroplanes\n\n \n\nAD/CESSNA 188/11 Throttle Bellcrank 4/69\n\nApplicability: All models fitted with P/N 0750163-1 throttle control bellcranks. Requirement: Action in accordance with Supplement 1 of Cessna SL No. SE 68-28.\n\nNote: FAA AD 69-4-2 refers.\n\n \n\nCompliance: Within 100 hours time in service after 15 April 1969.\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\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument sets a targeted requirement for all Cessna 188 aeroplanes fitted with throttle bellcranks P/N 0750163-1 and mandates compliance with the manufacturer’s Supplement 1 of Cessna SL No. SE 68-28 within a specified 100‑hour timeframe. The text contains no indication that it expands or reduces that applicability beyond what the directive states."},"complexity_factors":["Narrow, specific applicability (single part number P/N 0750163-1) reduces scope complexity","Mandatory referral to an external technical document (Supplement 1 of Cessna SL No. SE 68-28) adds dependency on an outside source for substantive detail","Fixed and short compliance timeframe (100 hours TIS after 15 April 1969) creates an operational deadline","Cross-reference to FAA AD introduces a secondary authoritative source to check but does not materially complicate the directive text","The AD text itself is short and does not set out alternative compliance paths or exceptions, simplifying interpretation but requiring consultation of the supplement for technical steps"],"plain_english_summary":"This Airworthiness Directive requires operators of Cessna 188 (Agwagon) aeroplanes fitted with throttle control bellcranks P/N 0750163-1 to carry out the actions in Supplement 1 of Cessna Service Letter SE 68-28, made mandatory, within 100 hours time-in-service after 15 April 1969. It affects owners/operators who must source and apply the manufacturer’s procedure and notes alignment with FAA AD 69-4-2."},"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 a specific aircraft type. It has not expanded beyond its original purpose of mandating a throttle bellcrank inspection/repair."},"complexity_factors":["Extremely short document (under 150 words)","Only one defined term (P/N 0750163-1, the part number)","Single, unambiguous compliance requirement (follow the Cessna service letter)","No nested exceptions or conditional logic","Clear applicability statement ('All models fitted with...')","Simple deadline calculation (100 hours time in service after fixed date)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It applies to specific **Cessna 188 'Agwagon' agricultural aircraft**.\n\n**What it does:**\n- Requires owners/operators to inspect or fix a problem with the **throttle bellcrank** (a mechanical lever that connects the throttle control to the engine) on affected aircraft.\n- The specific part number affected is **P/N 0750163-1**.\n- The work must follow **Cessna Service Letter SE 68-28, Supplement 1** — essentially the manufacturer's official repair instructions.\n\n**Who it affects:**\n- Anyone operating a Cessna 188 series aircraft with the specified throttle bellcrank part.\n\n**Why it matters:**\n- Throttle control failures in agricultural aircraft (which often fly low and slow over crops) could lead to loss of engine power control, potentially causing crashes. This AD prevents that by mandating a specific safety fix.\n\n**Compliance deadline:**\n- The work had to be done within **100 hours of flight time** after 15 April 1969.\n\n**Note:** This references an equivalent American FAA directive (AD 69-4-2), showing Australia was harmonising with US safety standards."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-188-11-throttle-bellcrank","history":"/api/acts/ad-cessna-188-11-throttle-bellcrank/history","analysis":"/api/acts/ad-cessna-188-11-throttle-bellcrank/analysis","conflicts":"/api/acts/ad-cessna-188-11-throttle-bellcrank/conflicts","importantCases":"/api/acts/ad-cessna-188-11-throttle-bellcrank/important-cases","documents":"/api/acts/ad-cessna-188-11-throttle-bellcrank/documents"}}