{"id":"F2006B09437","name":"AD/ELECT/62 - Inventum Water Heaters","slug":"ad-elect-62-inventum-water-heaters","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53854,"registerId":"commonwealth-F2006B09437-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ELECT/62 - Inventum Water Heaters","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 107 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nElectrical Equipment\n\nAD/ELECT/62 Inventum Water Heaters 5/94\n\nApplicability: Inventum Galley Products Division Model DR1 and DR6 series Water Heaters, part numbers and serial numbers as listed in Inventum Alert Service Bulletin (ASB) DR1/DR6-25-4 Revision A and ASB DR1/DR6-25-5 Revision A, both dated\n\n6 December 1993.\n\nNote: The water heaters are known to be installed in, but not limited to, the following aircraft models:\n\nBoeing 727 and 737\n\nMcDonnell Douglas DC-9\n\nFokker F28 (except Mk. 1000)\n\nRequirement: 1. Perform a one time inspection on all affected water heaters to determine whether:\n\n    a pressure relief valve has been installed in accordance with Inventum Service Bulletin (SB) 25-330 dated 8 July 1976, SB 25-331 Revision 1 dated\n\n28 September 1977 or ASB DR1/DR6-25-4 Revision A dated 6 December 1993 as applicable; and\n\n    b. two 3-phase safety devices have been installed in accordance with Inventum SB 25-340 dated 7 July 1977, SB 25-344 dated 18 January 1978, SB 25-345 dated 16 February 1978, SB 25-346 dated 16 February 1978 or ASB DR1/DR6-25-5 Revision A dated 6 December 1993 as applicable.\n\n    2. If a pressure relief valve and/or two 3-phase safety devices (as applicable) have not been installed, then either:\n\n    remove the water heater from the aircraft and install a modified water heater, or\n\n    b. deactivate the water heater and install a placard stating “Not to be used”.\n\n    3. Inventum Model DR1 and DR6 water heaters are not to be fitted to aircraft as replacement items, unless modified in accordance with the referenced Inventum Service Bulletins.\n\nNote: RLD AD 93-168 (AB) dated 17 December 1993 refers.\n\nCompliance: 1 \\- Prior to 1 July 1994.\n\n2 \\- Prior to further flight after the Requirement 1 inspection. 3 - With effect 28 April 1994.\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 107 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\nBackground: The RLD has received a report of an aircraft Inventum DR6 galley water heater exploding during an overheat test in a maintenance facility. Investigation revealed that the heater did not have a pressure relief valve or 3-phase safety devices installed. Since this condition may exist on other similar Inventum water heaters, this Directive is issued to prevent explosions of water heaters and subsequent injuries to passengers or cabin crew members.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The Directive targets Inventum Model DR1 and DR6 water heaters as specified by the referenced ASBs and SBs (Applicability; Requirement). It confines actions to inspection, modification/removal, deactivation/placarding, and replacement prohibition of unmodified units, matching the stated objective to prevent explosions; the scope therefore aligns with the instrument's stated purpose."},"complexity_factors":["Technical inspection requirements: Verifying specific safety fittings (pressure relief valve; two 3‑phase safety devices) requires technical knowledge and access to service records/parts lists (Requirement 1).","Multiple cross‑referenced service bulletins: Compliance depends on several Inventum SBs and ASBs (SB 25‑330, 25‑331 Rev 1, 25‑340, 25‑344, 25‑345, 25‑346, ASB DR1/DR6‑25‑4 and ‑25‑5) which implement the modifications (Requirement 1).","Multiple compliance pathways: Operators may modify/replace the heater, remove it, or deactivate and placard it—each option has different operational and cost consequences (Requirement 2).","Parts/serial number specificity: Applicability is limited to part/serial numbers listed in the referenced ASBs, requiring record checks against those lists (Applicability).","Operational impact and grounding risk: Non‑compliant heaters must be deactivated before further flight, creating potential immediate operational disruption (Requirement 2; Compliance).","Deadlines and timing: Stated compliance windows (inspection prior to 1 July 1994; further‑flight restrictions; effective date for replacement prohibition) create scheduling pressure for operators (Compliance).","Scope across aircraft types: Heaters are known to be installed on multiple aircraft models (Boeing 727/737, DC‑9, Fokker F28) but are 'not limited to' those models, complicating fleetwide searches (Applicability).","Liability and documentation burden: Demonstrating compliance requires retaining inspection/modification records and using Inventum documentation referenced by the AD (Requirement; Note)."],"plain_english_summary":"This airworthiness directive requires a one‑time inspection of Inventum DR1 and DR6 galley water heaters to confirm a pressure relief valve and two 3‑phase safety devices are fitted. If the devices are missing, the heater must be modified or removed, or deactivated and placarded “Not to be used”, and unmodified DR1/DR6 heaters may not be fitted as replacements.\n\nThe stated purpose is to prevent heater explosions after an overheat‑test failure; aircraft operators pay inspection and modification costs and must ground or placard non‑compliant units."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains its original narrow scope — addressing a specific safety defect in specific water heater models. The directive does not expand beyond its original purpose of preventing heater explosions through inspection and modification requirements."},"complexity_factors":["Single-issue directive with one specific safety defect and clear remedy path","Only 2 defined product models (DR1 and DR6) with explicit part/serial number references to external Service Bulletins","Simple conditional structure: inspect → if non-compliant then (replace OR deactivate)","Three distinct compliance dates but all clearly specified and unambiguous","Heavy reliance on external documents (5 different Service Bulletins) for technical specifications, though these are standard in aviation maintenance","No nested exceptions or complex definitional sections"],"plain_english_summary":"This CASA Airworthiness Directive orders operators to inspect Inventum DR1 and DR6 galley water heaters for missing pressure-relief valves and 3‑phase safety cutouts after a heater exploded in testing. It affects aircraft using these heaters (e.g., Boeing 727/737, McDonnell Douglas DC‑9, Fokker F28). Heaters lacking the features must be replaced with modified units or disabled and placarded; after 28 Apr 1994 no unmodified replacements may be fitted."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-elect-62-inventum-water-heaters","history":"/api/acts/ad-elect-62-inventum-water-heaters/history","analysis":"/api/acts/ad-elect-62-inventum-water-heaters/analysis","conflicts":"/api/acts/ad-elect-62-inventum-water-heaters/conflicts","importantCases":"/api/acts/ad-elect-62-inventum-water-heaters/important-cases","documents":"/api/acts/ad-elect-62-inventum-water-heaters/documents"}}