{"id":"F2006B04278","name":"AD/BEECH 90/95 - Landing Gear Hand Pump - Modification","slug":"ad-beech-90-95-landing-gear-hand-pump-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44084,"registerId":"commonwealth-F2006B04278-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 90/95 - Landing Gear Hand Pump - Modification","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nBeechcraft 90 and 65-90 (King Air) Series Aeroplanes\n\nAD/BEECH 90/95 Landing Gear Hand Pump \\- Modification 9/99\n\nApplicability: All Beechcraft C90A model airplanes with serial numbers LJ1063 through LJ-1482. Requirement: Install a filter element in the landing gear hand pump suction line in accordance with\n\nRaytheon Mandatory Service Bulletin SB 32-3073 Revision 1 dated July 1998.\n\nNote: US FAA AD 99-09-10 Amdt 39-11143 dated 26 April 1999 refers.\n\nCompliance: Within 200 hours’ time in service (TIS), from the effective date of this Directive This Airworthiness Directive becomes effective on 9 September 1999.\n\nBackground: Experience has shown that debris can get into the landing gear hand pump system and prevent the successful operation of the system. This Directive introduces a modification to filter the suction line and prevent debris from migrating further into the system.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The Directive implements a targeted mechanical modification for a defined set of aircraft to address debris in the landing gear hand pump system. The text prescribes the specific modification and compliance window; it does not expand or narrow the set of actions required beyond installing the filter per the named service bulletin. Therefore the scope remains the specific retrofit obligation described in the Requirement and Applicability sections."},"complexity_factors":["Very narrow applicability (specific model and serial number range).","Single, clearly specified technical action (install filter element).","Mandates compliance with a single external technical document (Raytheon SB 32-3073 Rev 1).","Fixed, short compliance timeframe (200 hours’ time in service).","Cross-reference to an external regulator's AD (US FAA), adding context but not alternative compliance routes.","No conditional exemptions, alternatives, or complex compliance pathways in the text.","Operational impacts limited to parts procurement and maintenance scheduling (administrative rather than regulatory complexity)."],"plain_english_summary":"This Directive requires owners/operators of Beechcraft C90A aircraft serial numbers LJ1063–LJ1482 to install a filter element in the landing‑gear hand‑pump suction line per Raytheon Mandatory Service Bulletin SB 32‑3073 Revision 1. Compliance was required within 200 hours’ time‑in‑service after the Directive’s effective date (9 Sept 1999).\n\nThe change responds to debris found in the pump system that can prevent operation. Owners bear parts and labour costs; the Directive references a related FAA AD for context."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical defect in a specific aircraft model. It has not expanded beyond its original purpose of mandating a filter installation to prevent landing gear hand pump failures."},"complexity_factors":["Single, discrete technical requirement (install one specific component)","Narrow applicability (one aircraft model, specific serial number range)","No nested exceptions or conditional logic","Only one defined term used ('time in service' — TIS)","Clear compliance deadline with simple calculation (200 hours from effective date)","No cross-references to other legislation beyond a single note about the corresponding US FAA directive"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). Think of it as a \"recall notice\" for aircraft, but legally binding.\n\n**What it does:** It requires owners and operators of specific Beechcraft King Air aeroplanes (C90A models with serial numbers LJ1063 through LJ-1482) to install a filter in the landing gear hand pump system. This filter stops debris from clogging the system.\n\n**Why it matters:** The landing gear hand pump is a backup system used to lower the wheels if the main hydraulic system fails. If debris blocks this pump, pilots cannot extend the landing gear manually — which means a dangerous belly landing or crash. This modification prevents that failure mode.\n\n**Who must comply:** Anyone operating the affected aircraft must complete the modification within 200 hours of flight time after 9 September 1999.\n\n**Key details:**\n- **Affected aircraft:** Beechcraft C90A King Airs (specific serial numbers only)\n- **Action required:** Install filter per Raytheon Service Bulletin SB 32-3073 Rev 1\n- **Deadline:** Within 200 flight hours from 9 September 1999\n- **Legal basis:** Civil Aviation Regulations 1988, Part 39 (these regulations give CASA power to issue mandatory safety directives)"}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-90-95-landing-gear-hand-pump-modification","history":"/api/acts/ad-beech-90-95-landing-gear-hand-pump-modification/history","analysis":"/api/acts/ad-beech-90-95-landing-gear-hand-pump-modification/analysis","conflicts":"/api/acts/ad-beech-90-95-landing-gear-hand-pump-modification/conflicts","importantCases":"/api/acts/ad-beech-90-95-landing-gear-hand-pump-modification/important-cases","documents":"/api/acts/ad-beech-90-95-landing-gear-hand-pump-modification/documents"}}