{"id":"F2006B02893","name":"AD/B737/192 Amdt 1 - Elevator Tab Mast Fitting","slug":"ad-b737-192-amdt-1-elevator-tab-mast-fitting","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42235,"registerId":"commonwealth-F2006B02893-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B737/192 Amdt 1 - Elevator Tab Mast Fitting","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Safety Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \n\nAIRWORTHINESS DIRECTIVE\n\n![](image.001.png)  \n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/B737/192 and issues the following AD under subregulation 39.1 (1) of CASR 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\nBoeing 737 Series Aeroplanes\n\nAD/B737/192\n\nAmdt 1\n\n  \nElevator Tab Mast Fitting 13/2003\n\nApplicability: Model 737-700 and \\-800 series aircraft, line numbers 1 through 190.\n\nRequirement: Action in accordance with the technical requirements of FAA AD 99-18-01 Amdt 39- 11267.\n\nNote 1: Boeing Alert Service Bulletins 737-55A1068 Revision 1 and 737-55-1063 refer.\n\nCompliance: As specified in the Requirement document, with a revised effective date of 31 October 2002. Compliance with AD/B737/210 (FAA AD 2003-03-22) constitutes terminating action for the requirements of this Directive.\n\nThe compliance time remains unchanged by this issue. This Amendment becomes effective on 25 December 2003.\n\nBackground: The FAA received a report of a severe vibration incident on a Model 737-800 series aircraft. Inspection revealed fracturing of the elevator tab mast fitting and excessive freeplay in the elevator tab. This condition, unless corrected, could result in loss of controllability of the aircraft.\n\nAmendment 1 is issued to introduce terminating action for the requirements of this Directive.\n\nThe original issue of this Airworthiness Directive became effective on 31 October 2002.\n\n![Signature of David Villiers, Delegate of the Civil Aviation Safety Authority.](image.002.png)  \n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority 13 November 2003\n\n![](image.001.png)\n\nThe above AD is notified in the Commonwealth of Australia Gazette on 3 December 2003.\n\n  \n\nPage 1 of 1","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment maintains the original scope (737-700/-800 aircraft, line numbers 1-190). It adds only a terminating action provision, which is a standard administrative mechanism in airworthiness directives and does not expand the substantive scope beyond the original safety purpose."},"complexity_factors":["Short, single-page document with straightforward structure","Only 4 defined elements: applicability (specific aircraft models/line numbers), requirement (reference to external FAA document), compliance (external reference plus specific date), and terminating action (cross-reference to another AD)","Heavy reliance on external technical documents — the actual work requirements are contained in FAA AD 99-18-01 and Boeing Service Bulletins, not in this text","Simple conditional logic: if you comply with AD/B737/210, you can stop complying with this one","No nested exceptions or complex definitional sections"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators of Boeing 737-700/800 line numbers 1–190 to follow FAA AD 99-18-01 inspections and repairs on the elevator tab mast fitting to prevent cracking that can cause severe vibration and possible loss of control. Amendment 1 adds a terminating option: compliance with the later AD/B737/210 (FAA AD 2003-03-22) permanently satisfies the inspection requirement."},"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":3,"scope_assessment":{"changed":true,"description":"Amendment 1 modifies the original AD by introducing a terminating action: if an operator complies with AD/B737/210, that compliance terminates the requirements of AD/B737/192 (as stated in the Compliance paragraph). The amendment does not change the original compliance times but revises the effective date and adds the terminating-path option."},"complexity_factors":["Narrow, specific applicability (Model 737-700 and -800, line numbers 1–190) limits stakeholder scope","Cross-reference to an external FAA AD (99-18-01) makes compliance dependent on another instrument's technical content","Introduction of a terminating action (compliance with AD/B737/210) creates regulatory interdependence","Compliance timing is unchanged but effective dates are revised, requiring attention to dates","Technical aviation maintenance work (inspection/repair of elevator tab mast fitting) requires specialised skills and resources"],"plain_english_summary":"This Airworthiness Directive (AD/B737/192 Amdt 1) directs operators of Boeing 737-700 and -800 aircraft (line numbers 1–190) to carry out the technical actions specified in FAA AD 99-18-01 to inspect and fix the elevator tab mast fitting, addressing fractured fittings and excessive freeplay that could risk loss of control. CASA issued the amendment to add a terminating option: complying with AD/B737/210 ends the obligations of this Directive. CASA decides; operators pay inspection and repair costs and must change maintenance actions."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b737-192-amdt-1-elevator-tab-mast-fitting","history":"/api/acts/ad-b737-192-amdt-1-elevator-tab-mast-fitting/history","analysis":"/api/acts/ad-b737-192-amdt-1-elevator-tab-mast-fitting/analysis","conflicts":"/api/acts/ad-b737-192-amdt-1-elevator-tab-mast-fitting/conflicts","importantCases":"/api/acts/ad-b737-192-amdt-1-elevator-tab-mast-fitting/important-cases","documents":"/api/acts/ad-b737-192-amdt-1-elevator-tab-mast-fitting/documents"}}