{"id":"F2007L00098","name":"AD/AS 355/92 - Starter Generator","slug":"ad-as-355-92-starter-generator","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":68166,"registerId":"commonwealth-F2007L00098-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Eurocopter AS 355 (Twin Ecureuil) Series","sectionType":"division","heading":"Eurocopter AS 355 (Twin Ecureuil) Series Helicopters","content":"### Eurocopter AS 355 (Twin Ecureuil) Series Helicopters\n\n| AD/AS 355/92 | Starter Generator | 2/2007 |\n| ------------ | ----------------- | ------ |\n\n| Applicability: | All AS 355 N helicopters equipped with starter generators, all part numbers, without MOD 073344.                                                                                                                                                                                                                                                                 |\n| -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Install a placard indicating a revised maximum generator load above 10 000 feet, on the instrument panel, below the ammeter, in accordance with the instructions specified in paragraph 2.B. of Eurocopter AS 355 Alert Service Bulletin No 01.00.52 or later approved revision.                                                                                 |\n|                | Note: EASA AD 2006-0338 refers.                                                                                                                                                                                                                                                                                                                                  |\n| Compliance:    | No later than 110 hours time in service or 12 months after the effective date of this Directive, which ever occurs first.                                                                                                                                                                                                                                        |\n|                | This Airworthiness Directive becomes effective on 15 February 2007.                                                                                                                                                                                                                                                                                              |\n| Background:    | This Directive introduces a new placard on the instrument panel below the ammeter advising of that the maximum generator load at altitudes above 10 000 feet is 100 Amperes. This revised limitation is introduced as generator load above 10 000 feet can cause excessive power consumption thus reducing the engine margin which can result in engine failure. |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n4 January 2007","sortOrder":0},{"sectionNumber":"AD/AS 355/92","sectionType":"part","heading":"AD/AS 355/92","content":"## AD/AS 355/92","sortOrder":1},{"sectionNumber":"Starter Generator","sectionType":"part","heading":"Starter Generator","content":"## Starter Generator","sortOrder":2},{"sectionNumber":"2/2007","sectionType":"part","heading":"2/2007","content":"## 2/2007","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The Directive does not broaden regulated operations or alter equipment standards beyond adding a placard. It applies only to AS 355 N helicopters without MOD 073344 and mandates a warning label per the Alert Service Bulletin (Applicability; Requirement)."},"complexity_factors":["Narrow applicability: only AS 355 N helicopters without MOD 073344 (Applicability).","Single, simple corrective action: install a placard per Eurocopter AS 355 Alert Service Bulletin paragraph 2.B (Requirement).","Fixed compliance window: 110 flight hours or 12 months, whichever is sooner (Compliance).","Relies on an external technical document for installation details (Eurocopter Alert Service Bulletin) and cross‑refers EASA AD 2006-0338 (Requirement / Note).","No modification of aircraft systems required—administrative marking only (Background)."],"plain_english_summary":"Requires operators of Eurocopter AS 355 N helicopters without MOD 073344 to install an instrument‑panel placard stating the maximum generator load above 10,000 ft is 100 A, fitted per Eurocopter Alert Service Bulletin instructions (Requirement). Operators pay to fit the placard and must comply within 110 flight hours or 12 months (Compliance). The placard responds to a safety concern that high generator load above 10,000 ft can reduce engine margin and risk engine failure (Background)."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow Airworthiness Directive addressing a specific technical safety issue with a specific helicopter model. The scope remains tightly focused on the original safety concern regarding generator load at altitude."},"complexity_factors":["Single, unambiguous requirement (install one placard)","Only one defined term of note ('time in service')","No nested exceptions or conditional logic — only one exemption (MOD 073344)","Short document with clear compliance deadline","Cross-reference to only one external document (Eurocopter Alert Service Bulletin)"],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Eurocopter AS 355 N helicopters with a starter generator (unless modified by MOD 073344) to install a placard beneath the ammeter stating the maximum generator load above 10,000 ft is 100 A.\n\nThe placard must be fitted within 110 flight hours or 12 months of the AD (effective 15 Feb 2007) to help prevent engine strain and possible engine failure from electrical overloading at high altitude."},"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-as-355-92-starter-generator","history":"/api/acts/ad-as-355-92-starter-generator/history","analysis":"/api/acts/ad-as-355-92-starter-generator/analysis","conflicts":"/api/acts/ad-as-355-92-starter-generator/conflicts","importantCases":"/api/acts/ad-as-355-92-starter-generator/important-cases","documents":"/api/acts/ad-as-355-92-starter-generator/documents"}}