{"id":"F2006B03656","name":"AD/BEECH 1900/38 - Elevator Control System","slug":"ad-beech-1900-38-elevator-control-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43246,"registerId":"commonwealth-F2006B03656-current","compilationNumber":null,"startDate":"2026-04-01","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 1900 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/BEECH 1900/38 Elevator Control System","sectionType":"part","heading":"AD/BEECH 1900/38 Elevator Control System 3/2003","content":"# AD/BEECH 1900/38 Elevator Control System 3/2003\n\nTX\n\nApplicability: All Model 1900, 1900C, and 1900D aircraft.\n\nRequirement: 1. Perform a control column sweep inspection to verify full elevator travel to the primary up and down stops. Accomplish this inspection in accordance with the Raytheon Aircraft Company 1900, 1900C, or 1900D maintenance manual, as applicable; using the following procedures:\n\n    Remove the aft fairing from the vertical stabiliser to gain visual access to surface stop bolts on the elevator control horn support.\n\n    b. Perform a full pitch-down to full pitch-up control column sweep. Visually ensure that the elevator horns contact the surface stop bolts for both the full pitch-down and full pitch-up control column positions.\n\n    c. Measure the length of both elevator down stop bolts from the crown of the bolt head to the face of the elevator lower stop bolt support.\n\n    (i) If the dimension of each stop bolt is equal to or less than 1.00 inch, the bolts are acceptable for the purposes of this inspection.\n\n    (ii) If the dimension of either stop bolt is greater than 1.00 inch, before further flight, accomplish the travel board inspection procedures as specified in Requirement 3.a. of this Directive. If it passes the procedure specified in Requirement 3.a., the bolt is acceptable even though it exceeds 1.00 inch.\n\n    2. If the aircraft does not pass the control column sweep inspection or bolt length requirements of Requirements 1.b., 1.c. or 3.a. of this Directive:\n\n    Accomplish the elevator control rigging procedure in accordance with the applicable 1900, 1900C, or 1900D maintenance manual. Do not reinstall the aft fairing because access to the surface stop bolt is still necessary.\n\n    b. Perform a control column sweep inspection by accomplishing the actions in Requirements 1.b., 3.a., and 3.b. of this Directive. These actions are also referenced in Requirement 4 of this Directive.","sortOrder":1},{"sectionNumber":"Beechcraft 1900 Series Aeroplanes","sectionType":"part","heading":"Beechcraft 1900 Series Aeroplanes","content":"## Beechcraft 1900 Series Aeroplanes\n\nAD/BEECH 1900/38 (Continued)\n\n    c. When the aircraft passes the requirements of the above inspection, replace the aft fairing.\n\n    3. If the aircraft passes the inspection of Requirement 1 of this Directive, before further flight, replace the aft fairing; and accomplish Requirement 3.a. of this Directive within 100 hours time in service and any necessary actions before further flight after that as specified in Requirement 3.b. of this Directive:\n\n    Utilising the elevator travel boards, inspect to ensure that the surface stops on the control horn support allow the following:\n\n    (i) Up elevator travel of 20 degrees, +1 degree –0 degree; and,\n\n    (ii) Down elevator travel of 14 degrees, +1 degree –0 degree.\n\n    b. If the aircraft does not pass the inspection required by Requirement 3.a. of this Directive, before further flight, accomplish the elevator control system rigging procedures specified in Requirements 2.a., 2.b., and 3.a. of this Directive.\n\n    4. Perform a control column sweep inspection by accomplishing the actions of Requirements 1.a., 1.b., 2., 3.a., and 3.b. of this Directive. If the aft fairing is already removed, Requirement 1.a. action is not required.\n\n    5. Report the initial inspection and initial travel board inspection results to the Raytheon Aircraft Company.\n\nNote: FAA Emergency AD 2003-03-18 refers.\n\nCompliance: 1. Initially inspect no later than 2 February 2003. If necessary, accomplish the travel board inspection before further flight after the Requirement 1.c.(ii) inspection.\n\n    2. Before further flight after the applicable Requirement 1, 3, and 4 inspection.\n\n    3. Replace the aft fairing before further flight after the applicable inspection required by Requirements 1, 3, and 4 of this Directive. Unless accomplished per Requirement 1.c.(ii) of this Directive, accomplish the travel board inspection within 100 hours time in service after the initial inspection required by Requirement 1 of this Directive. Accomplish any necessary re-rigging before further flight after the inspection required by this Directive.\n\n    4. Before further flight after each time the elevator control system is re-rigged. Examples of items that require re-rigging, include, but are not limited to; changing the tension on the elevator primary control cables and replacing the elevator control system components such as cables, pulleys, push-pull tubes, and bellcranks.","sortOrder":2}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":false,"description":"The directive applies to all Model 1900, 1900C and 1900D aircraft as identified in the AD (Applicability). This matches the stated background that the same elevator control design affects those models and does not expand coverage beyond those aircraft types; it prescribes inspections, re‑rigging, and reporting rather than adding new operational limitations."},"complexity_factors":["Multiple conditional inspection and repair pathways across Requirements 1–4, creating branching compliance choices (Requirement: 1–4).","Numeric measurement threshold with an exception: stop‑bolt length limit 1.00 inch and an allowance under Requirement 1.c.(ii).","Tight, differing time limits: initial inspection by 2 February 2003, travel‑board inspection within 100 hours TSN, and reporting within 10 days (Compliance: 1–5).","Maintenance workflow impact: mandatory removal and staged replacement of aft vertical stabiliser fairing to access surface stop bolts; instructions to keep fairing removed until checks complete (Requirement 1.a; 2.a; 3.c).","Cross‑referencing to manufacturer maintenance manuals for procedures increases procedural complexity and reliance on external documents (Requirement 1: 'in accordance with the Raytheon Aircraft Company ... maintenance manual').","Reporting obligation to Raytheon of initial inspection results adds an administrative step and external data flow (Requirement 5; Compliance 5).","Re‑rigging triggers and recurrent inspections after any rigging work (including cable/pulley/component replacement) require repeated compliance actions before further flight (Requirement 2; Compliance 4).","Regulatory enforcement and decision-maker are a CASA delegate under subregulation 39.1(1) of CAR 1998, rather than ad hoc operator judgement (AD preamble).","Reference to FAA Emergency AD 2003-03-18 creates an external compliance context that operators must consider (Note)."],"plain_english_summary":"**Requires operators of Beechcraft 1900, 1900C and 1900D aeroplanes to inspect and, if necessary, re‑rig the elevator control system, measure specific stop‑bolt dimensions, replace or remove the aft stabiliser fairing for access, and report results to Raytheon.** The directive sets exact travel and bolt‑length checks, deadlines for initial and follow‑up inspections, and grounding‑until‑fixed rules enforced by CASA (delegate under subregulation 39.1(1) CAR 1998). Operators pay for inspections, any re‑rigging and reporting costs and must comply before further flight."},"kimi_summary":{"content_quality":"ok","complexity_score":6,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains its original scope as an emergency safety response to a specific accident involving elevator control rigging. The document does not show evidence of scope creep; it remains tightly focused on the identified unsafe condition in the Beechcraft 1900 series elevator control system."},"complexity_factors":["Multiple nested conditional pathways (Requirements 1, 2, 3, and 4 create branching logic where actions depend on pass/fail outcomes of previous inspections)","Extensive cross-referencing between requirements (e.g., Requirement 2.b. references Requirements 1.b., 3.a., and 3.b.; Requirement 4 references five separate earlier requirements)","Dual inspection methods with different tolerances (control column sweep vs. travel board inspection with precise angular measurements: 20° +1°/–0° up, 14° +1°/–0° down)","Multiple compliance timelines with different triggers (initial deadline of 2 February 2003, 100 hours time-in-service window, 'before further flight' requirements, and 10-day reporting deadline)","Specific technical measurement requirement (1.00 inch bolt length threshold with conditional override in Requirement 1.c.(ii))","Conditional exemptions (Requirement 4 exempts Requirement 1.a. if fairing already removed)"],"plain_english_summary":"This CASA safety order requires owners, operators and maintenance engineers of Beechcraft 1900/1900C/1900D aircraft to inspect and verify full elevator travel and rigging, using measurements and travel boards, and to re‑rig any systems that fail.  \n\nIt matters because restricted elevator movement can prevent proper pitch control—especially on heavy takeoffs—so the checks (and mandatory fixes) are intended to prevent loss-of-control accidents."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-1900-38-elevator-control-system","history":"/api/acts/ad-beech-1900-38-elevator-control-system/history","analysis":"/api/acts/ad-beech-1900-38-elevator-control-system/analysis","conflicts":"/api/acts/ad-beech-1900-38-elevator-control-system/conflicts","importantCases":"/api/acts/ad-beech-1900-38-elevator-control-system/important-cases","documents":"/api/acts/ad-beech-1900-38-elevator-control-system/documents"}}