{"id":"F2012L00409","name":"AD/BEECH 33/48 Amdt 1 - Forward Elevator Cable","slug":"ad-beech-33-48-amdt-1-forward-elevator-cable","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":88517,"registerId":"commonwealth-F2012L00409-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Beechcraft 33 and 35-33 (Debonair/Bonanz","sectionType":"division","heading":"Beechcraft 33 and 35-33 (Debonair/Bonanza) Series Aeroplanes","content":"### Beechcraft 33 and 35-33 (Debonair/Bonanza) Series Aeroplanes\n\n| AD/BEECH 33/48 Amdt 1 | Forward Elevator Cable | 4/2012 |\n| --------------------- | ---------------------- | ------ |\n\n| Applicability: | All Beechcraft Debonair/Bonanza aeroplanes fitted with the forward elevator control cable configuration as detailed in figure 1 of this AD. |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement: | 1. Inspect the forward elevator control cable assembly for wear, broken wires and corrosion; or replace the forward elevator cable assembly.2. Remove from service any forward elevator control cable assembly found to be defective as a result of inspection conducted in accordance with Requirement 1 of this AD.3. Do not install on any aircraft a cable assembly or parts thereof that have been removed in accordance with Requirement 2 of this AD.Note 1: Inspections carried out in accordance with FAA AC 43-13-1B, chapter 7, Section 8, paragraph 7-149(d) or Beechcraft maintenance data are an acceptable means of compliance for the inspection called up by Requirement 1 of this AD. |\n| Compliance: | For Requirement 1.For those aircraft that have not had the forward elevator cable assembly replaced or inspected within the last maintenance release period - Remains unchanged as - Before further flight after the 16 January 2012 (the effective date of the original issue of this AD).For those aircraft located where the inspection cannot be carried out - one positioning flight (pilot only) is allowed to a place where the inspection can be carried out.Aircraft that have had the forward elevator cable assembly replaced or inspected in accordance with the original issue of this AD are considered to be in compliance with Requirement 1 of this AD. |\n\n| | For Requirement 2. Before further flight.For Requirement 3. After the effective date of this AD. |\n| ----------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| | This Amendment becomes effective on 27 February 2012. |\n| Background: | CASA has received a report describing a forward elevator cable failure (separation) immediately prior to take-off. The elevator remained firmly in the full ‘down’ position due to system spring tension.A second aircraft was inspected at the owner’s request immediately following the discovery of the failed cable. The forward elevator cable in this aircraft was found to be extensively frayed in the same location as the failed cable.Since the original issue of this AD, CASA has received reports of 5 more cables found to be unserviceable.This AD required immediate inspection of the forward elevator cable and replacement for elevator cables over 15 years old, and required continuing inspections of the entire elevator control system to preclude the unanticipated failure of the elevator flight control system which may result in loss of control of the aircraft.Requirements for repeat inspections and the mandatory removal of cables in excess of 15 years in service have been removed from this AD following the publication of Instructions for Continuing Airworthiness (ICA) by the manufacturer. Those ICA are considered satisfactory to ensure the failure of the elevator cable does not occur provided that the ICA is adhered to during the inspection process.This Amendment clarifies the applicability section of the AD by introducing additional criteria (Figure 1) to assist the registered operator in determining whether this AD is applicable to their aircraft.The original issue of this AD became effective on 16 January 2012. |\n| | |\n| | Figure 1 - Forward Elevator Control Cable - Adaptedfrom Beechcraft Illustrated Parts Catalogue. |\n\n![](image.002.png) \nPeter Boyd \nDelegate of the Civil Aviation Safety Authority\n\n23 February 2012","sortOrder":0},{"sectionNumber":"AD/BEECH 33/48 Amdt 1","sectionType":"part","heading":"AD/BEECH 33/48 Amdt 1","content":"## AD/BEECH 33/48 Amdt 1","sortOrder":1},{"sectionNumber":"Forward Elevator Cable","sectionType":"part","heading":"Forward Elevator Cable","content":"## Forward Elevator Cable","sortOrder":2},{"sectionNumber":"4/2012","sectionType":"part","heading":"4/2012","content":"## 4/2012","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":true,"description":"The original directive was broader, requiring repeat inspections and mandatory removal of cables over 15 years old. This amendment narrows the scope by removing those ongoing obligations and relying instead on the manufacturer's Instructions for Continuing Airworthiness (ICA). The scope shifted from prescriptive, regulator-mandated repeated actions to a one-time compliance action plus reliance on manufacturer maintenance data."},"complexity_factors":["Short, single-purpose directive focused on one mechanical component","Only 3 substantive requirements with clear compliance dates","One conditional exception (positioning flight provision)","Cross-reference to external standards (FAA AC 43-13-1B and Beechcraft maintenance data) for inspection methods","Some repetition and formatting artifacts in the source text (duplicate headings) that don't affect legal substance","Requires reference to Figure 1 (diagram) for applicability determination, creating mild visual dependency"],"plain_english_summary":"This AD requires owners and operators of certain Beechcraft Debonair and Bonanza (models 33 and 35‑33) with the forward elevator cable configuration shown in Figure 1 to inspect or replace the forward elevator control cable before next flight and remove any defective cables. It directly affects aircraft owners, operators and maintenance engineers.\n\nIssued after reports of frayed/failed cables that left elevators uncontrollable, the amendment drops prior repeat inspections and a 15‑year replacement mandate because the manufacturer now provides Instructions for Continuing Airworthiness, and it clarifies applicability."},"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":4,"scope_assessment":{"changed":true,"description":"Yes. Compared with the original AD, this amendment narrows the prescriptive scope by removing the mandatory 15‑year removal requirement and the mandated repeat-inspection schedule. Instead, it recognises the manufacturer's Instructions for Continuing Airworthiness (ICA) as the satisfactory ongoing inspection regime if followed. The amendment also expands clarity of scope by adding Figure 1 criteria to assist operators in determining whether their aircraft are affected. Mechanically, the amendment shifts from a time-based, regulator-prescribed regime to one that relies on manufacturer ICA for continuing inspections while retaining immediate mandatory inspections and removal of defective parts."},"complexity_factors":["Short, single-subject AD with three discrete mandatory requirements (inspect/replace; remove unserviceable; do not reinstall removed parts).","Applicability depends on visual/configurational identification (Figure 1), requiring operators to compare their installation to a drawing.","Cross-references to external documents as acceptable means of compliance (FAA AC 43-13-1B and Beechcraft maintenance data/ICA).","Conditional compliance timing (before further flight unless previously inspected/replaced; single pilot positioning flight allowed where inspection cannot be done immediately).","Change from original AD: removal of prior time-based mandatory removal (>15 years) and repeat-inspection requirements, replaced by reliance on manufacturer ICA.","Limited number of defined terms and short text reduces syntactic complexity, but reliance on external maintenance documents adds interpretive steps."],"plain_english_summary":"**What this instrument changes (mechanically)\n\n- This is an airworthiness directive (AD) that applies to Beechcraft Debonair/Bonanza (Model 33 and 35‑33) aeroplanes that have the specific forward elevator control cable arrangement shown in Figure 1 of the AD. The AD introduces a short set of mandatory actions for those aeroplanes.\n\n- Required actions:\n - Inspect the forward elevator control cable assembly for wear, broken wires and corrosion, or replace the entire forward elevator cable assembly (Requirement 1).\n - If the inspection shows a defective cable assembly, remove it from service before the next flight (Requirement 2).\n - Do not reinstall or use any cable assembly or parts that have been removed because they were found defective (Requirement 3).\n\n- Timing and compliance mechanics:\n - If the cable assembly has not already been inspected or replaced within the aircraft's last maintenance release period, the inspection or replacement must be done before the next flight after 16 January 2012 (the original AD effective date).\n - If an aircraft is located where the inspection cannot be carried out immediately, a single pilot-only positioning flight is allowed to reach a place where the inspection can be performed.\n - The removal-from-service requirement is effective immediately (no further flight permitted with a defective cable), and re‑installation of removed parts is prohibited after this AD's effective date.\n - The AD explicitly accepts inspections performed in accordance with FAA Advisory Circular AC 43-13-1B (chapter 7, section 8, paragraph 7-149(d)) or the manufacturer's maintenance data as meeting the inspection requirement (Note 1).\n\n**Who this affects and who pays\n\n- Directly affected: registered operators and maintenance organisations responsible for Beechcraft 33 and 35-33 aeroplanes that have the forward elevator cable configuration shown in Figure 1.\n- Who pays: the aircraft owners/operators pay for the inspection, any replacement cable assemblies, labour and associated downtime. Maintenance organisations perform the work and issue the maintenance release.\n- Who decides: the Civil Aviation Safety Authority (CASA) sets the AD; aircraft operators and maintenance certifying staff carry out and certify compliance. The AD also defers to manufacturer maintenance instructions and recognised FAA guidance as acceptable methods.\n\n**Why CASA issued the AD (stated rationale) and how the amendment changes the prior AD\n\n- CASA received reports of forward elevator cable failures and fraying, including a separation just prior to take-off where the elevator remained in a full 'down' position due to spring tension. These occurrences create a risk that an elevator control failure could lead to loss of aircraft control.\n- The original AD required immediate inspection, forced replacement for cables over 15 years old, and repeat inspections. This amendment removes the mandatory 15‑year removal rule and the repeat inspection requirements because the manufacturer issued Instructions for Continuing Airworthiness (ICA) that CASA accepts as a satisfactory inspection regime, provided those ICA are followed. The amendment also clarifies applicability by adding the Figure 1 cable-configuration criteria so operators can determine whether their aeroplane is subject to the AD.\n\n**Costs, incentives and practical consequences (mechanical effects and trade-offs)\n\n- Costs and who bears them: operators pay inspection and replacement costs and incur aircraft downtime. The AD lets operators use standard FAA or Beechcraft maintenance procedures, which can reduce ambiguity and potentially lower inspection costs.\n- Incentives: operators have a clear near-term incentive to inspect/replace the cable to regain legal fitness to fly; because removed parts cannot be re-used, there is an incentive to perform careful inspections to avoid unnecessary removals. Accepting manufacturer ICA as sufficient shifts some ongoing inspection planning to routine maintenance cycles rather than continual regulator-driven repeats.\n- Trade-offs and opportunity costs: removing the blanket 15‑year removal requirement reduces immediate replacement costs for older cables but relies on ongoing adherence to the manufacturer's ICA; if operators or maintenance providers do not follow the ICA rigorously, there is some residual safety risk.\n- Implementation risk and compliance burden: the AD is operationally straightforward (inspect or replace, remove defective parts). The main execution risks are correct identification of the specific cable configuration (Figure 1) and consistent application of the accepted inspection standards. The AD reduces bureaucratic discretion by specifying acceptable inspection references (FAA AC or Beechcraft data), but it requires maintenance personnel to exercise judgment during inspections.\n- Effects on private choice and markets: the measure constrains operator choice only to the extent of requiring inspection or replacement and forbidding reuse of unserviceable parts. Independent maintenance organisations continue to be able to perform the work; suppliers of replacement cables may see increased demand in the short term. There is no change to ownership or transferability of aircraft, but aircraft with the affected cable configuration will face immediate inspection costs and potential grounding until compliance.\n\n**Concrete mechanisms that reduce ambiguity\n\n- The AD provides: (a) a figure (Figure 1) to identify affected cable configurations; (b) an explicit permissible positioning flight where inspection cannot be immediately performed; and (c) explicit cross-reference to FAA and manufacturer inspection guidance as acceptable means of compliance.\n\n**Bottom line (mechanical summary)\n\n- Operators of Beechcraft 33/35‑33 aircraft with the Figure 1 forward elevator cable must inspect or replace that cable, remove defective cables before further flight, and must not reinstall removed defective parts. The amendment narrows prescriptive time-based removals (over 15 years) and repeat inspection mandates in favour of following the manufacturer's Instructions for Continuing Airworthiness, while clarifying which cable installations are covered."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-33-48-amdt-1-forward-elevator-cable","history":"/api/acts/ad-beech-33-48-amdt-1-forward-elevator-cable/history","analysis":"/api/acts/ad-beech-33-48-amdt-1-forward-elevator-cable/analysis","conflicts":"/api/acts/ad-beech-33-48-amdt-1-forward-elevator-cable/conflicts","importantCases":"/api/acts/ad-beech-33-48-amdt-1-forward-elevator-cable/important-cases","documents":"/api/acts/ad-beech-33-48-amdt-1-forward-elevator-cable/documents"}}