{"id":"F2006L03188","name":"AD/AMD 50/38 - Electrical Power Feeder Inspection","slug":"ad-amd-50-38-electrical-power-feeder-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":60490,"registerId":"commonwealth-F2006L03188-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AMD Falcon 50 and 900 Series Aeroplanes","sectionType":"division","heading":"AMD Falcon 50 and 900 Series Aeroplanes","content":"### AMD Falcon 50 and 900 Series Aeroplanes\n\n| AD/AMD 50/38 | Electrical Power Feeder Inspection | 11/2006 |\n| ------------ | ---------------------------------- | ------- |\n\n| Applicability: | Mystère-Falcon 900 aeroplanes, serial number (S/N) 188 through 202 inclusive, except those on which Dassault Aviation Service Bulletins (SB) F900-358 andF900-359 both dated 19 October 2005 have both already been implemented or Modification M3891 has already been incorporated. |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| | Falcon 900EX aeroplanes, S/N 82 through 146 inclusive, except those on which Dassault Aviation SB F900EX-241 and F900EX-251 both dated 19 October 2005 have both already been implemented or Modification M3891 has already been incorporated. |\n| Requirement: | 1. Mystère-Falcon 900 aeroplanes - |\n| | a. Inspect and protect the feeder from the right side partition wall at frames 22/23 in accordance with SB F900-358 or later EASA approved revision. |\n| | b. If the feeder is found damaged, accomplish all applicable related corrective actions specified in the Accomplishment Instructions of SB F900-359 or later EASA approved revision. |\n| | c. Modify the right side partition wall at frames 22/23 and protect and/or repair the feeder cable as instructed in the SB F900-359 or later EASA approved revision. |\n| | Implementation of both SB F900-358 and SB F900-359 or later EASA approved revision is considered to be a terminating action for the requirements of this Directive. |\n| | 2. Falcon 900EX aeroplanes - |\n| | a. Inspect and protect the feeder from the right side partition wall at frames 22/23 in accordance with SB F900EX-241 or later EASA approved revision. |\n| | b. If the feeder is found damaged, accomplish all applicable related corrective actions specified in the Accomplishment Instructions of the SB F900EX-251 or later EASA approved revision. |\n| | c. Modify the right side partition wall at frames 22/23 and repair the feeder cable as instructed in the SB F900EX-251 or later EASA approved revision. |\n\n| | Implementation of both SB F900EX-241 and SB F900EX-251 or later EASA approved revision is considered to be a terminating action for the requirements of this Directive. |\n| ----------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| | Note: EASA AD 2006-0270 refers. |\n| Compliance: | For Requirement 1 - |\n| | a. Within either 330 hours time in service (TIS) or seven months after the effective date of this Directive, whichever occurs first. |\n| | b. Before further flight after the Requirement 1.a. inspection. |\n| | c. At the first time the partition wall is removed, but no later than 3,750 flight cycles or 74 months after from the effective date of this Directive, whichever occurs first. |\n| | For Requirement 2 - |\n| | a. Within either 330 hours TIS or seven months after the effective date of this Directive, whichever occurs first. |\n| | b. Before further flight after the Requirement 1.a. inspection. |\n| | c. At the first time the partition wall is removed, but no later than 3,750 flight cycles or 74 months after from the effective date of this Directive, whichever occurs first. |\n| | This Airworthiness Directive becomes effective on 26 October 2006. |\n| Background: | The aircraft manufacturer has advised of the discovery of potential chafing between the electrical wire feeder bundle and the right side partition wall separating the cabin from the lavatory at frames 22/23. This chafing may damage the feeder bundle and cause a sustained smoke-generating short-circuit between the feeder and the partition wall made of resistive composite material. Smoke and a difficult-to-localize short-circuit may result in a hazardous situation. |\n\n![](image.001.png) \nJames Coyne \nDelegate of the Civil Aviation Safety Authority\n\n15 September 2006","sortOrder":0},{"sectionNumber":"AD/AMD 50/38","sectionType":"part","heading":"AD/AMD 50/38","content":"## AD/AMD 50/38","sortOrder":1},{"sectionNumber":"Electrical Power Feeder Inspection","sectionType":"part","heading":"Electrical Power Feeder Inspection","content":"## Electrical Power Feeder Inspection","sortOrder":2},{"sectionNumber":"11/2006","sectionType":"part","heading":"11/2006","content":"## 11/2006","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":false,"description":"The Directive targets a specific chafing risk on designated Falcon 900/900EX serial numbers by mandating inspection, protection, repair and modification measures; allowing compliance via specified Dassault service bulletins or Mod M3891 is built into the text as a terminating action and does not expand or narrow the safety scope described in the Background."},"complexity_factors":["Applicability limited to precise serial-number ranges for two aeroplane models (Mystère‑Falcon 900 S/N 188–202; Falcon 900EX S/N 82–146) (Applicability).","Conditional exceptions where prior implementation of specific Dassault Service Bulletins or Modification M3891 removes the requirement (Applicability; Requirement).","Multiple, different mandatory actions: inspect/protect, accomplish corrective actions if damage found, and later modify/repair the partition and feeder (Requirement 1–2).","Several compliance triggers and deadlines: initial inspection within 330 flight hours or seven months; corrective actions before further flight; modification at first partition removal or by 3,750 cycles/74 months (Compliance).","Dependence on external documents and approvals: actions must follow named Dassault Service Bulletins or later EASA‑approved revisions (Requirement).","A terminating action that requires implementation of two specific SBs (or Mod M3891) creates coordination between operator maintenance and manufacturer instructions (Requirement).","Operational/testing complexity from the hazard described: chafing could cause a sustained, hard-to-localise, smoke-generating short‑circuit, which affects inspection and repair difficulty (Background)."],"plain_english_summary":"This Airworthiness Directive requires operators of specific Mystère‑Falcon 900 and Falcon 900EX aeroplanes (listed serial numbers) to inspect, protect and, if necessary, repair or modify an electrical feeder bundle at the right-side partition wall (frames 22/23) to prevent chafing that can cause smoke‑generating short‑circuits.\n\nOperators pay for and schedule the work; compliance deadlines are an initial inspection within 330 flight hours or seven months, repairs before further flight, and modification when the partition is removed or within 3,750 cycles/74 months; completing specified Dassault service bulletins or Mod M3891 ends the requirement."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a standard single-issue airworthiness directive focused on a specific wiring inspection and repair. It has not expanded beyond its original safety purpose."},"complexity_factors":["Multiple overlapping applicability criteria (serial number ranges, exceptions for prior modifications, two different aircraft models treated separately)","Cross-references to external European Aviation Safety Agency (EASA) documents and Dassault Service Bulletins (SBs) rather than self-contained instructions","Nested conditional compliance deadlines (whichever occurs first logic applied to flight hours, months, and flight cycles)","Terminating action clause that requires implementation of paired service bulletins to end obligations","Technical aviation terminology requiring specialized knowledge (TIS, flight cycles, frames, feeder bundles)"],"plain_english_summary":"This CASA Airworthiness Directive orders operators of specified Dassault Mystère-Falcon 900 (S/N 188–202) and Falcon 900EX (S/N 82–146) jets to inspect and remediate electrical feeder chafing at the lavatory wall that can cause insulation wear, short circuits, smoke and fire. Required actions include inspection, protecting or repairing wiring, and modifying the partition, with an initial inspection within 330 flight hours or 7 months and final modification within 3,750 cycles or 74 months. Compliance eliminates the AD for that aircraft."},"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-amd-50-38-electrical-power-feeder-inspection","history":"/api/acts/ad-amd-50-38-electrical-power-feeder-inspection/history","analysis":"/api/acts/ad-amd-50-38-electrical-power-feeder-inspection/analysis","conflicts":"/api/acts/ad-amd-50-38-electrical-power-feeder-inspection/conflicts","importantCases":"/api/acts/ad-amd-50-38-electrical-power-feeder-inspection/important-cases","documents":"/api/acts/ad-amd-50-38-electrical-power-feeder-inspection/documents"}}