{"id":"F2006B02897","name":"AD/B737/196 - Elevator Power Control Unit Input Rods","slug":"ad-b737-196-elevator-power-control-unit-input-rods","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42239,"registerId":"commonwealth-F2006B02897-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \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\nBoeing 737 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/B737/196 Elevator Power Control Unit ","sectionType":"part","heading":"AD/B737/196 Elevator Power Control Unit Input Rods 11/2002","content":"# AD/B737/196 Elevator Power Control Unit Input Rods 11/2002\n\nApplicability: Model 737-600, \\-700, and \\-800 series aircraft, line numbers 1 through 477. Requirement: Action in accordance with the technical requirements of FAA AD 2000-07-09 Amdt\n\n39-11663.\n\nNote: Boeing Telegraphic Service Letter 737-SL-27-150 refers.\n\nCompliance: As specified in the Requirement document, with a revised effective date of 31 October 2002.\n\nThis Airworthiness Directive becomes effective on 31 October 2002.\n\nBackground: The FAA received reports of loose nuts on the bolts that connect the lower input crank arm and the vernier adjustment input rod of the elevator power control unit (PCU). Loose nuts on the bolts of the input crank arms of the elevator PCU could result in loss of the bolts and consequent loss of control of the aircraft during takeoff and landing.\n\n![Signature of David Villiers, Delegate of the Civil Aviation Safety Authority.](image.002.jpeg)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 12 September 2002\n\n![](image.001.png)","sortOrder":1}],"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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow Airworthiness Directive addressing a specific mechanical defect in specific aircraft. It has not expanded beyond its original safety purpose."},"complexity_factors":["Very short document (approximately 250 words)","Only 1 defined term implicitly referenced (line numbers)","No nested conditional logic — single straightforward applicability criterion","No cross-references to other Australian legislation beyond the enabling regulation (CAR 1998 subreg 39.1(1))","Delegates all technical requirements to an external FAA document rather than reproducing them","Simple structure: Applicability → Requirement → Compliance → Background"],"plain_english_summary":"This AD orders owners/operators of Boeing 737-600/‑700/‑800 airplanes (production line numbers 1–477) to inspect and correct the elevator power control unit input rods because reports of loose nuts could let bolts fall out and cause loss of pitch control during takeoff or landing. \n\nCompliance follows FAA AD 2000‑07‑09 (with Boeing 737‑SL‑27‑150 guidance) and was required by 31 October 2002 to prevent catastrophic accidents."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive implements the FAA corrective action for the same affected parts and aircraft and does not broaden or narrow the affected population; the only modification in this instrument is a revised effective date (Applicability; Requirement; Compliance)."},"complexity_factors":["Cross-reference to external FAA AD 2000-07-09 for the technical requirement (Requirement) — operators must obtain and follow another regulator's document.","Narrow applicability to specific models and line numbers (Applicability: 737-600/-700/-800, line 1–477) — limits who must comply but requires fleet identification.","Fixed compliance timing with a revised effective date (Compliance: effective 31 October 2002) — creates a scheduling deadline for operators.","Safety-critical maintenance tasks on flight-control hardware (Background) — work requires qualified maintenance, parts handling, and possible downtime.","Reference to Boeing telegraphic service letter (Note) — may require access to manufacturer service information and coordination with vendor guidance."],"plain_english_summary":"This Airworthiness Directive requires operators of Boeing 737-600, -700 and -800 aeroplanes (line numbers 1–477) to carry out the inspection and corrective actions specified in FAA AD 2000-07-09 for loose nuts/bolts on the elevator power control unit input crank arm and vernier input rod. CASA makes those FAA technical instructions mandatory in Australia and sets the compliance effective date as 31 October 2002.\n\nAircraft operators pay for inspections/repairs and must schedule the work to avoid the risk of bolt loss and possible control problems during takeoff and landing; the AD cross-references Boeing service information for technical detail."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b737-196-elevator-power-control-unit-input-rods","history":"/api/acts/ad-b737-196-elevator-power-control-unit-input-rods/history","analysis":"/api/acts/ad-b737-196-elevator-power-control-unit-input-rods/analysis","conflicts":"/api/acts/ad-b737-196-elevator-power-control-unit-input-rods/conflicts","importantCases":"/api/acts/ad-b737-196-elevator-power-control-unit-input-rods/important-cases","documents":"/api/acts/ad-b737-196-elevator-power-control-unit-input-rods/documents"}}