{"id":"F2006B04972","name":"AD/CESSNA 170/44 - Limited Elevator Movement - Placard","slug":"ad-cessna-170-44-limited-elevator-movement-placard","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44858,"registerId":"commonwealth-F2006B04972-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 170/44 - Limited Elevator Movement - Placard","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)  \nCessna 170, 172, F172, FR172 and 175 Series Aeroplanes\n\nAD/CESSNA 170/44 Limited Elevator Movement \\- Placard 9/81\n\nApplicability: All model 172 RG with S/Nos 172 RG 0001 to 172 RG 0769.\n\nRequirement: 1. Install a locally manufactured placard in clear view of the pilot, using letters at least 2.4 mm (3/32 inch) high, which reads:\n\n“ELEVATOR MOVEMENT MAY BE LIMITED WHEN RIGHT RUDDER IS APPLIED IF THIS CONDITION IS ENCOUNTERED, CENTER THE RUDDER PEDALS, LAND AS SOON AS PRACTICAL AND COMPLY WITH AD/CESSNA 170/45 PRIOR TO FURTHER FLIGHT.”\n\n2. Remove placard after compliance with AD/CESSNA 170/45.\n\nNote: FAA AD 81-14-06 Amdt 39-4158 and Cessna Single Engine Service Letter SE80-99 Rev 1 refer to this subject.\n\nCompliance: Before further flight.\n\nBackground: In-service failure of the jack screw shaft of the rudder trim/nose gear steering bungee could limit elevator control system movement and for safety, the aircraft should land as soon as practicable after the pilot experiences elevator control limited movement.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted airworthiness directive addressing a specific mechanical defect in a defined aircraft population. It has not expanded beyond its original safety purpose."},"complexity_factors":["Single, specific applicability (one aircraft model, defined serial number range)","Two straightforward requirements: install placard, then remove it later","No defined terms section","No cross-references to other legislation (only references to related FAA directive and Cessna service letter as background)","Simple conditional logic (compliance trigger is 'before further flight', removal trigger is completion of subsequent AD)","Total length: approximately 200 words"],"plain_english_summary":"This AD requires owners/operators of Cessna 172 RG serials 0001–0769 to install a cockpit warning placard before further flight alerting pilots to a potential jack screw shaft failure in the rudder trim/nose‑gear steering that can jam the elevator. The placard tells pilots how to recognise and respond (centre rudder, land ASAP) and must be removed after the referenced repair (AD/CESSNA 170/45) is completed."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"Scope remains a narrowly targeted, temporary placard requirement for the specified 172 RG serial numbers pending corrective action under AD/CESSNA 170/45. The directive does not broaden applicability beyond those aircraft or add new maintenance mandates beyond removal after compliance."},"complexity_factors":["Narrow applicability to a specific serial‑number range of 172 RG aircraft (Applicability)","Simple, single corrective action: install a placard with prescribed wording and minimum letter height (Requirement)","Immediate compliance required 'before further flight' imposes an operational constraint (Compliance)","Temporary dependency on compliance with another airworthiness directive (AD/CESSNA 170/45) for placard removal (Requirement 2)","Cross‑reference to FAA AD and manufacturer service letter adds external-document reliance (Note)","Safety‑critical operational instruction to pilots to centre rudder and land as soon as practicable (Background)"],"plain_english_summary":"**What this does:** Requires operators of Cessna 172 RG aircraft (S/N 172 RG 0001–0769) to install, before further flight, a cockpit placard (letters ≥2.4 mm) warning that elevator movement may be limited when right rudder is applied; remove the placard after complying with AD/CESSNA 170/45.  \n\n**Why it matters:** The instruction addresses an identified jack‑screw/bungee failure that can reduce elevator control; pilots are told to centre the rudder and land as soon as practicable. Costs and actions fall on aircraft owners/operators for immediate compliance and on pilots for altered in‑flight responses."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-170-44-limited-elevator-movement-placard","history":"/api/acts/ad-cessna-170-44-limited-elevator-movement-placard/history","analysis":"/api/acts/ad-cessna-170-44-limited-elevator-movement-placard/analysis","conflicts":"/api/acts/ad-cessna-170-44-limited-elevator-movement-placard/conflicts","importantCases":"/api/acts/ad-cessna-170-44-limited-elevator-movement-placard/important-cases","documents":"/api/acts/ad-cessna-170-44-limited-elevator-movement-placard/documents"}}