{"id":"F2006B10380","name":"AD/HS 125/102 Amdt 1 - Warming Ovens","slug":"ad-hs-125-102-amdt-1-warming-ovens","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":116025,"registerId":"commonwealth-F2006B10380-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/HS 125/102 Amdt 1 - Warming Ovens","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)  \nBritish Aerospace BAe 125 Series Aeroplanes\n\nAD/HS 125/102\n\nAmdt 1\n\n  \nWarming Ovens 9/91\n\nApplicability: All BAe 125 series aircraft fitted with warming ovens part no. 255B-LH-28/115, 255B-RH-28/115, and/or 255-362.\n\nRequirement: Replace warming ovens part no. 255B-LH-28/115; 255B-RH-28/115 and 255-362 with warming ovens part no. 255D-LH-28/115; 255D-RH-28/115 or 255-362A respectively.\n\nNote: BAe SB 25-54-9758A and B refers. This is classified as mandatory by the UK CAA.\n\nCompliance: The compliance date of the previous issue of this Directive was 2 May 1990. This revision is effective from 5 September 1991.\n\nBackground: Instances of thermal runaway have occurred in unmodified ovens.\n\nAmendment 1 is issued to correct a typographical error in the Requirement Document reference number.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a minor administrative amendment (Amendment 1) that corrects a typographical error in a document reference number. The substantive safety requirement and scope remain identical to the original 1990 directive."},"complexity_factors":["Very short document (under 200 words)","Only 3 defined part numbers in the applicability section","Single, unambiguous requirement with no conditional logic or exceptions","No cross-references to other legislation beyond a single service bulletin reference","Straightforward compliance date structure with clear grandfathering of previous deadline"],"plain_english_summary":"This is a **safety order for specific aircraft**. The Civil Aviation Safety Authority (CASA) is requiring owners and operators of British Aerospace BAe 125 series planes to replace certain warming ovens (the small heated compartments used to warm food on aircraft) with safer models.\n\n**What the problem is:**\nThe original warming ovens (part numbers 255B-LH-28/115, 255B-RH-28/115, and 255-362) have a dangerous fault. They can suffer \"thermal runaway\" — essentially overheating uncontrollably, which creates fire risk.\n\n**What must be done:**\n- **Who:** Anyone operating a BAe 125 aircraft with the affected oven models\n- **What:** Replace the old ovens with updated versions (part numbers ending in \"D\" instead of \"B\", or \"255-362A\" instead of \"255-362\")\n- **When:** The deadline was originally 2 May 1990; this updated version took effect from 5 September 1991\n\n**Why this matters:**\nThis is a mandatory safety directive. Aircraft operators cannot legally fly these planes without making this change. The amendment (Amendment 1) doesn't change the safety requirement — it simply fixes a typo in the document reference number pointing to the manufacturer's service bulletin."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"Amendment 1 corrects a typographical error in the Requirement Document reference number and does not change the set of affected aircraft, the replacement parts required, or the stated safety reason for the directive. The revised issue is effective from 5 September 1991 while the previous issue carried a compliance date of 2 May 1990 (Amendment 1; Compliance)."},"complexity_factors":["Narrow technical scope: specific aircraft model (BAe 125 series) and exact part numbers are listed (Applicability; Requirement).","Simple mandatory action: a single, well-defined replacement obligation reduces legal and operational ambiguity (Requirement).","Cross-reference to BAe service bulletin for technical installation details introduces a dependency on an external document (Note).","Compliance timing and record-keeping are stated at a high level but leave logistical details (parts supply, workshop scheduling) to operators, creating operational complexity despite legal simplicity (Compliance; Requirement).","Amendment is administrative (typographical correction) and does not alter substantive requirements (Amendment 1)."],"plain_english_summary":"Operators and owners of BAe 125 series aeroplanes must replace specified older galley warming ovens with upgraded part numbers to mitigate reported thermal‑runaway incidents. The directive is mandatory, places cost and downtime on the aircraft owner/operator, and depends on timely parts and correct installation per the BAe service bulletin. This amendment only corrects a typographical reference and does not change the technical requirement."}},"importantCases":[],"_links":{"self":"/api/acts/ad-hs-125-102-amdt-1-warming-ovens","history":"/api/acts/ad-hs-125-102-amdt-1-warming-ovens/history","analysis":"/api/acts/ad-hs-125-102-amdt-1-warming-ovens/analysis","conflicts":"/api/acts/ad-hs-125-102-amdt-1-warming-ovens/conflicts","importantCases":"/api/acts/ad-hs-125-102-amdt-1-warming-ovens/important-cases","documents":"/api/acts/ad-hs-125-102-amdt-1-warming-ovens/documents"}}