{"id":"F2006B03770","name":"AD/BEECH 300/16 - Elevator Balance Weight Attachment","slug":"ad-beech-300-16-elevator-balance-weight-attachment","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43366,"registerId":"commonwealth-F2006B03770-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# ![](image.001.png)  \nAIRWORTHINESS DIRECTIVE\n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (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\nBeechcraft 300 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/BEECH 300/16 Elevator Balance Weight ","sectionType":"part","heading":"AD/BEECH 300/16 Elevator Balance Weight Attachment 2/2003","content":"# AD/BEECH 300/16 Elevator Balance Weight Attachment 2/2003\n\nApplicability: Models 300/300LW, B300, and B300C aircraft, with serial numbers listed in Raytheon Mandatory Service Bulletin (MSB) SB 27-3187, Revision 1, Revised September 2001.\n\nRequirement: 1. Check the aircraft logbook to determine whether the elevator(s) have been removed. If, by checking the logbook, it can be positively determined that the elevators have never been removed, no further action is required.\n\n    2. If, by checking the logbook, it can determined that the elevator(s) has/have been removed, or if complete records of elevator(s) do not exist, inspect the elevator balance weight attachment screws to determine if they are the correct length in accordance with the Accomplishment Instructions section of Raytheon MSB SB 27-3187 Revision 1. If the inspection reveals the elevator balance weight attachment screws are the correct length, no further action is required.\n\n    3. If, during the Requirement 2 inspection, the elevator balance weight attachment screw(s) are found to be incorrect length, remove and rebalance the elevator(s) by installing the balance weights with the appropriate new elevator balance weight attachment bolts in accordance with the Accomplishment Instructions section of Raytheon MSB SB 27-3187 Revision 1, and the applicable maintenance manua l.\n\n    4. Do not install, on any affected aircraft, an elevator that has been rebalanced unless it has been rebalanced by installing the balance weights with the appropriate new balance weight attachment bolts, part number in the range of NAS6703HU12 through NAS6703HU22, that have drilled heads and are secured with safety wire.\n\nNote: FAA AD 2002-23-11 Amdt 39-12955 refers.\n\nCompliance: For Requirements 1 and 2: Within 200 hours time in service after 20 February 2003.\n\nRequirement 3: Before further flight. Requirement 4: As of 20 February 2003.\n\nThis Airworthiness Directive becomes effective on 20 February 2003.","sortOrder":1}],"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":"Scope remains a targeted corrective requirement for specified Beechcraft 300-series aircraft/serial numbers to inspect and, if needed, replace elevator balance weight attachment hardware. The AD does not expand regulated subjects beyond the listed models/serials; it imposes verification, inspection and replacement obligations (check logbook, inspect screws, install specified bolts and safety-wire) with defined compliance timings."},"complexity_factors":["Technical specificity of required hardware and part numbers (NAS6703HU12–HU22) and the need for drilled-head bolts secured with safety-wire (Requirement 4).","Dependence on the accuracy and completeness of operator logbooks to determine whether physical inspection is needed (Requirement 1).","Procedural dependence on a manufacturer document for how to inspect and install parts (Raytheon MSB SB 27-3187 Rev 1 referenced in Requirement 2–3).","Time-critical compliance layers: routine inspections within 200 hours TIS but any corrective replacement must be done before further flight (Compliance; Requirement 3).","Applicability limited to particular models and serial numbers, requiring operators to check applicability lists before applying the AD (Applicability).","Cross-reference to an FAA AD (FAA AD 2002-23-11) and maintenance manuals increases coordination and record-keeping requirements."],"plain_english_summary":"This Airworthiness Directive requires operators of specified Beechcraft 300-series aircraft (serial numbers listed in Raytheon MSB SB 27‑3187 Rev 1) to verify logbooks and, where elevators have been removed or records are incomplete, inspect and, if necessary, replace elevator balance weight attachment screws with drilled‑head NAS6703HU12–HU22 bolts secured by safety‑wire. Inspections must occur within 200 flight hours and any incorrect bolts must be corrected before further flight; the AD addresses an unsafe condition in elevator balance attachment hardware."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a standard airworthiness directive addressing a specific unsafe condition (elevator balance weight attachment). It has not expanded beyond its original safety purpose."},"complexity_factors":["Short, single-purpose directive with only 4 numbered requirements","Minimal defined terms (relies on external manufacturer service bulletin MSB SB 27-3187)","Simple conditional logic (if-then structure in Requirements 1-3)","Single cross-reference to FAA AD 2002-23-11","Clear compliance deadlines with specific flight hour calculations","No nested exceptions or complex sub-clauses"],"plain_english_summary":"This safety order applies to owners/operators of Beechcraft 300/300LW, B300 and B300C aeroplanes named in the service bulletin. It requires checking logbooks within 200 flight hours from 20 Feb 2003 to see whether elevators were removed; if so (or records are unclear) mechanics must inspect the screws that secure elevator balance weights.\n\nIf incorrect screws are found, the elevators must be removed, rebalanced, and refitted using the specified drilled-head, safety-wired bolts (NAS6703HU12–HU22) before further flight to prevent weight loss and loss of control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-300-16-elevator-balance-weight-attachment","history":"/api/acts/ad-beech-300-16-elevator-balance-weight-attachment/history","analysis":"/api/acts/ad-beech-300-16-elevator-balance-weight-attachment/analysis","conflicts":"/api/acts/ad-beech-300-16-elevator-balance-weight-attachment/conflicts","importantCases":"/api/acts/ad-beech-300-16-elevator-balance-weight-attachment/important-cases","documents":"/api/acts/ad-beech-300-16-elevator-balance-weight-attachment/documents"}}