{"id":"F2005L02957","name":"AD/BEECH 1900/47 - Elevators","slug":"ad-beech-1900-47-elevators","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":37766,"registerId":"commonwealth-F2005L02957-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Beechcraft 1900 Series Aeroplanes","sectionType":"division","heading":"Beechcraft 1900 Series Aeroplanes","content":"### Beechcraft 1900 Series Aeroplanes\n\n| AD/BEECH 1900/47 | Elevators | 12/2005 DM |\n| ---------------- | --------- | ---------- |\n\n| Applicability: | Model 1900 aircraft, serial number UA-3.Model 1900C aircraft, serial number UB-1 through UB-74, UC-1 through UC-174.Model 1900C aircraft, serial numbers UD-1 through UD-6.Model 1900D aircraft, serial numbers UE-1 through UE-439.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement:   | 1. Inspect all elevator hinge support attachments on both left and right elevators for loose or missing rivets; as specified in Raytheon Aircraft Company Safety Communique No. 261 dated August 2005, following the applicable Raytheon Aircraft Company Maintenance Manual, Chapter 5-20-07 and Structural Repair Manual, Chapter 51-40-02.If loose or missing rivets are evident, replace affected rivets before further flight.2. Inspect the elevator hinge joints for looseness and the clearance of each elevator to its stabiliser; as specified in Raytheon Aircraft Company Safety Communique No. 261, following the applicable Raytheon Aircraft Company Maintenance Manual, Chapter 5-20-07.If looseness of the elevator hinge joints or incorrect clearance between the elevators and their stabilisers is evident, correct the discrepancies before further flight.Note: FAA AD 2005-18-21 Amdt 39-14262 refers. |\n| Compliance:    | 1. Within 50 hours time in service after 4 October 2005.2. Within 50 hours time in service after 4 October 2005.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |\n|                | This Airworthiness Directive becomes effective on 4 October 2005.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |\n\n| Background: | The FAA received a report of an incident where the pilot of a Model 1900D aircraft experienced a binding elevator control column during takeoff. The pilot was able to free the control column. Inspection revealed a missing rivet and other loose rivets on the outboard hinge attachment that attaches the elevator to the horizontal stabiliser. The elevator counterweight horn showed evidence of rubbing against the horizontal stabiliser, indicating possible incorrect clearance. Loose rivets were found on other aircraft of the same type design. |\n| ----------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n29 September 2005","sortOrder":0},{"sectionNumber":"AD/BEECH 1900/47","sectionType":"part","heading":"AD/BEECH 1900/47","content":"## AD/BEECH 1900/47","sortOrder":1},{"sectionNumber":"Elevators","sectionType":"part","heading":"Elevators","content":"## Elevators","sortOrder":2},{"sectionNumber":"12/2005 DM","sectionType":"part","heading":"12/2005 DM","content":"## 12/2005 DM","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard reactive Airworthiness Directive issued in response to a specific safety incident. The scope remains tightly focused on the elevator hinge rivet issue that prompted the directive. No evidence of scope creep beyond the original safety purpose."},"complexity_factors":["Very short document (under 400 words)","Only 2 specific technical requirements with clear conditional triggers ('if loose or missing rivets are evident')","Single cross-reference to FAA AD 2005-18-21 for context only, not for operative provisions","No defined terms section — all language is plain technical aviation terminology","Simple compliance structure: one deadline (50 hours time in service) applies to both requirements","Limited applicability clearly specified by aircraft model and serial number ranges"],"plain_english_summary":"This AD requires owners/operators of specified Beechcraft 1900-series aircraft to inspect the elevators for defects—loose or missing rivets and hinge interference—and repair before further flight if problems are found.  \n\nIt affects roughly 700+ 1900/1900C/1900D aircraft by serial number and was prompted by a control‑column jam on takeoff; inspections were required within 50 flight hours of 4 Oct 2005 to prevent loss of control."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD stays within the original, stated scope: it addresses a specific safety hazard (loose or missing elevator hinge rivets and incorrect elevator-to-stabiliser clearance) for a defined set of Beechcraft 1900-series aircraft. It prescribes inspections and mandatory fixes referenced to the manufacturer’s maintenance and repair manuals. It does not expand the subject matter beyond those elevators/hinges or broaden applicability to other models or structural areas."},"complexity_factors":["Short document with two primary mandated actions (inspect hinge support rivets; inspect hinge joints and clearances).","Applicability limited to specific models and multiple serial-number ranges (several ranges listed).","Cross-reference to external service material: Raytheon Safety Communique No. 261 and specific chapters in the Raytheon Maintenance and Structural Repair Manuals.","Cross-reference to FAA AD 2005-18-21 (administrative cross-link).","Single, tight compliance deadline for both actions (within 50 hours time-in-service after 4 October 2005).","Immediate ‘before further flight’ repair requirement if defects are found (binary compliance outcome)."],"plain_english_summary":"**What this rule does (mechanically):**\n\n- Requires operators of specified Beechcraft 1900-series aeroplanes (listed by model and serial number in the Applicability) to:  \n  - Inspect all elevator hinge support attachments on both left and right elevators for loose or missing rivets and replace any affected rivets before further flight (Requirement 1).  \n  - Inspect elevator hinge joints for looseness and check the clearance between each elevator and its horizontal stabiliser; correct any looseness or incorrect clearance before further flight (Requirement 2).  \n- The inspections and any repairs must follow Raytheon Aircraft Company Safety Communique No. 261 and the cited chapters of the Raytheon Maintenance and Structural Repair Manuals (Requirement 1 & 2).  \n- Both inspections must be completed within 50 hours time-in-service after 4 October 2005 and the AD was made effective 4 October 2005 (Compliance).\n\n**Who has to act and who pays:**\n\n- Aircraft operators and their maintenance organisations must perform the inspections and repairs.  \n- The direct costs fall to the operator: labour time for inspections, any replacement rivets and parts, possible structural repair work, and aircraft downtime while inspections/repairs are done (Requirement, Compliance).\n\n**Why the rule exists (stated source rationale):**\n\n- The rule follows an incident where a Beechcraft 1900D pilot experienced a binding elevator control column during takeoff. Inspections found a missing rivet and other loose rivets at an outboard elevator hinge attachment and evidence that the elevator counterweight horn had been rubbing the stabiliser. Loose rivets were also found on other aircraft of the same type (Background).  \n- The AD cites the related FAA airworthiness directive (FAA AD 2005-18-21) and directs compliance with Raytheon service material (Requirement; Note).\n\n**Practical effects and operational mechanics:**\n\n- Operators must schedule and carry out the inspections within the 50-hour window or ground the aeroplane until compliance.  \n- If any rivets are loose/missing or hinge joints/clearances are incorrect, the operator must fix them before the aircraft next flies.  \n- The AD points maintenance staff to specific Raytheon manual chapters for correct inspection and repair procedures, so maintenance must follow those procedures to comply (Requirement).\n\n**Assessment of the claimed purpose and trade-offs:**\n\n- Stated purpose: to prevent elevator-control binding caused by loose or missing rivets and incorrect elevator-to-stabiliser clearance (Background).  \n- Benefits: reduces the immediate safety risk of elevator control restriction; benefits are concentrated on flight crews and passengers on affected aircraft and on operators avoiding in-service failures (Requirement; Background).  \n- Costs and burdens: inspection labour, replacement parts, potential structural repairs, and aircraft downtime. These are borne by operators; compliance may disrupt schedules and maintenance planning (Requirement, Compliance).  \n- Implementation risk: correct outcome depends on accurate inspection and repair per the Raytheon procedures named in the AD. If inspections are cursory or repairs are improper, the risk remains (Requirement).  \n- Incentives and behaviour change: operators are incentivised to perform timely, documented inspections and repairs to return aircraft to service and to avoid safety risk or regulatory enforcement. There is no discretionary opt-out; the AD requires correction before further flight when defects are found (Requirement, Compliance).  \n- Opportunity costs: maintenance resources diverted to these inspections could delay other scheduled maintenance or checks.  \n- Substitution effects/unintended consequences: if many aircraft require repairs, operators may face longer maintenance queues or the need for structural repairs beyond simple rivet replacement (Background; Requirement refers to Structural Repair Manual).\n\n(References in parentheses point to the AD sections: Applicability; Requirement 1 & 2; Compliance; Background; Note re FAA AD.)"},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-1900-47-elevators","history":"/api/acts/ad-beech-1900-47-elevators/history","analysis":"/api/acts/ad-beech-1900-47-elevators/analysis","conflicts":"/api/acts/ad-beech-1900-47-elevators/conflicts","importantCases":"/api/acts/ad-beech-1900-47-elevators/important-cases","documents":"/api/acts/ad-beech-1900-47-elevators/documents"}}