{"id":"F2006L01681","name":"AD/JETSTREAM/102 - Steering Jack Gland Housing","slug":"ad-jetstream-102-steering-jack-gland-housing","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":59430,"registerId":"commonwealth-F2006L01681-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"British Aerospace BAe 3100 (Jetstream) S","sectionType":"division","heading":"British Aerospace BAe 3100 (Jetstream) Series Aeroplanes","content":"### British Aerospace BAe 3100 (Jetstream) Series Aeroplanes\n\n| AD/JETSTREAM/102 | Steering Jack Gland Housing | 7/2006 |\n| ---------------- | --------------------------- | ------ |\n\n| Applicability: | All Models HP137 Jetstream Mark 1, Jetstream Series 200, 3100 and 3200 aeroplanes.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement:   | For steering jack part number 6182-1 to 6182-5, install a serviceable steering jack in accordance with Jetstream Service Bulletin 32-JM5417 at Original Issue or later approved revision.Note: EASA AD 2006-0128 dated 18 May 2006 refers.                                                                                                                                                                                                                                                                                                                                                                                                             |\n| Compliance:    | At the next overhaul of the steering jack or by 1 July 2012, whichever occurs first, after the effective date of this AD.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |\n|                | This Airworthiness Directive becomes effective on 6 July 2006.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |\n| Background:    | Two incidents have been reported where the normal hydraulic supplies were lost due to the failure/loss of the steering jack gland housing. This has been attributed to pre-existing thread damage on the steering jack gland housing. Three previous failures may also be due to this failure mechanism.Failure of the steering jack gland housing resulted in significant damage to the right hand undercarriage bay door, and could result in the nose landing gear jamming in a fully or partially retracted position. Landing in such a condition is considered as potentially unsafe due to the degraded control of the aircraft post touch down. |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n24 May 2006","sortOrder":0},{"sectionNumber":"AD/JETSTREAM/102","sectionType":"part","heading":"AD/JETSTREAM/102","content":"## AD/JETSTREAM/102","sortOrder":1},{"sectionNumber":"Steering Jack Gland Housing","sectionType":"part","heading":"Steering Jack Gland Housing","content":"## Steering Jack Gland Housing","sortOrder":2},{"sectionNumber":"7/2006","sectionType":"part","heading":"7/2006","content":"## 7/2006","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow Airworthiness Directive targeting a specific known defect in a specific aircraft type. The scope remains tightly focused on the steering jack gland housing failure mode described in the background. No scope creep is evident."},"complexity_factors":["Single, specific mechanical component targeted (steering jack gland housing)","Only 5 part numbers affected (6182-1 through 6182-5)","Clear, single compliance pathway referenced to manufacturer service bulletin","Simple deadline structure: next overhaul OR fixed date (1 July 2012), whichever first","No nested exceptions, conditional logic, or cross-references to other legislation","Background narrative provided in plain language describing failure mode and safety risk","Total document length: approximately 250 words excluding formatting artifacts"],"plain_english_summary":"This AD mandates owners/operators of specified British Aerospace Jetstream models to replace or repair the nose-gear steering jack gland housing (per Service Bulletin 32-JM5417) by the next steering-jack overhaul or by 1 July 2012, whichever is earlier. Failures from damaged threads can cause hydraulic loss, undercarriage-door damage or a jammed nose gear — creating a serious landing hazard. Compliance is compulsory."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive is narrowly targeted at eliminating a specific unsafe condition (failure of the steering jack gland housing) on identified Jetstream models and specified part numbers. It does not broaden the regulation beyond that original safety purpose: it prescribes a single remedial action, ties compliance to a clear deadline or maintenance event, and relies on an established Service Bulletin for the technical procedure."},"complexity_factors":["Narrow applicability: specific aircraft models listed (HP137 Jetstream Mark 1, Series 200, 3100, 3200)","Limited number of affected part numbers (6182-1 to 6182-5)","Single prescriptive action: install a serviceable steering jack per Service Bulletin 32-JM5417","Cross-reference to an external document (Jetstream Service Bulletin 32-JM5417) and acceptance of later \"approved\" revisions","Compliance timing has a two-part condition: at next overhaul OR by a fixed date (1 July 2012), whichever occurs first","Reference to related foreign AD (EASA AD 2006-0128) rather than embedding additional technical requirements"],"plain_english_summary":"**What this instrument does**\n\n- Requires owners/operators of British Aerospace BAe 3100 (Jetstream) series aeroplanes (all Models HP137 Jetstream Mark 1, Jetstream Series 200, 3100 and 3200) to have any steering jack with part number 6182-1 to 6182-5 replaced or made serviceable in accordance with Jetstream Service Bulletin 32-JM5417 (original issue or a later approved revision).\n\n- Sets the compliance timing: the replacement or installation must occur at the next overhaul of the steering jack or by 1 July 2012, whichever happens first, measured from the AD's effective date (the AD became effective 6 July 2006).\n\n- Cross-references an EASA airworthiness directive (EASA AD 2006-0128) as related information.\n\n**Who this affects**\n\n- Aircraft owners and operators of the listed Jetstream models.\n- Maintenance organisations and engineers who perform jack overhauls or part replacements.\n- Parts suppliers and overhaul facilities that provide serviceable steering jacks or rebuild services for the affected part numbers.\n\n**Why it matters (technical rationale)**\n\n- The directive responds to reported incidents where the steering jack gland housing failed because of pre-existing thread damage. That failure led to loss of normal hydraulic steering supplies, significant damage to the right-hand undercarriage bay door in at least one case, and the potential for the nose landing gear to jam (fully or partly retracted). Those outcomes reduce control of the aircraft after touchdown and are judged to present an unsafe condition.\n\n**How it works mechanically**\n\n- The AD identifies the hazardous item by part number (6182-1 through 6182-5) and mandates installing a \"serviceable\" steering jack following the procedures in the manufacturer's Service Bulletin 32-JM5417 (original issue or later approved revisions). \"Serviceable\" in practice means a jack that meets the Service Bulletin's inspection/repair/replacement criteria.\n\n**Practical effects, incentives and costs**\n\n- Who pays: Owners/operators bear the direct costs of parts, overhaul labour, and aircraft downtime required to comply.\n- Who decides: Approved maintenance organisations carry out the work and must follow the referenced Service Bulletin; the regulator enforces the AD and must accept later revisions of the Service Bulletin where those are specified as \"approved.\"\n- Behaviour changes: Operators will schedule jack overhauls in line with the AD deadline (earlier if the next overhaul would be after 1 July 2012), may stock or source serviceable replacement jacks, or send jacks for overhaul to approved facilities.\n- Trade-offs: The AD trades the financial and availability costs of parts, labour and downtime against a reduction in the risk of hydraulic failure and associated landing-gear problems.\n- Implementation risks and compliance burden: Potential issues include part availability (especially for specific part numbers), lead times for authorised overhaul facilities, and administrative compliance (recording work to show the AD has been complied with). The AD’s acceptance of later \"approved\" revisions of the Service Bulletin introduces an approval step (who approves and how) that maintenance organisations must track.\n\n**Concrete mechanics for operators**\n\n- Identify steering jacks with P/N 6182-1 to 6182-5 on affected aircraft.\n- At the next steering-jack overhaul or by 1 July 2012 (whichever is sooner), perform the service/inspection/replacement steps set out in Jetstream Service Bulletin 32-JM5417 (original issue or later approved revision) so that only serviceable jacks remain installed.\n- Retain maintenance records demonstrating compliance with the AD for regulatory inspection/enforcement.\n\n(References in the text: Requirement and Compliance paragraphs; Background paragraph describing incidents.)"},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-jetstream-102-steering-jack-gland-housing","history":"/api/acts/ad-jetstream-102-steering-jack-gland-housing/history","analysis":"/api/acts/ad-jetstream-102-steering-jack-gland-housing/analysis","conflicts":"/api/acts/ad-jetstream-102-steering-jack-gland-housing/conflicts","importantCases":"/api/acts/ad-jetstream-102-steering-jack-gland-housing/important-cases","documents":"/api/acts/ad-jetstream-102-steering-jack-gland-housing/documents"}}