{"id":"F2006B01966","name":"AD/A320/77 - Loral DFDR F800 Damping Rack Installation","slug":"ad-a320-77-loral-dfdr-f800-damping-rack-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41188,"registerId":"commonwealth-F2006B01966-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/A320/77 - Loral DFDR F800 Damping Rack Installation","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)  \nAirbus Industrie A319, A320 and A321 Series Aeroplanes\n\nAD/A320/77 Loral DFDR F800 Damping Rack Installation 2/97\n\nApplicability: All A320 and A321 series aeroplanes, equipped with a Loral Data Systems Digital Flight Data Recorder (DFDR) F800, without Airbus Industrie modification 24959 or Airbus Industrie Service Bulletin (SB) A320-31-1088 Revision 2 dated 16 September 1996.\n\nRequirement: Install a DFDR rack incorporating improved damping and reroute the cable harness in accordance with Airbus Industrie SB A320-31-1088 Revision 2 dated 16 September 1996.\n\nNote: DGAC AD 96-272-098(B) refers.\n\nCompliance: Prior to 31 July 1998.\n\nThis Airworthiness Directive becomes effective on 30 January 1997.\n\nBackground: Airbus Industrie advises that under certain flight conditions the DFDR may not record all necessary data correctly. Action specified by this Directive are designed to rectify this discrepancy.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2464},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive remains tightly focused on the specific technical remedy for the Loral F800 DFDR damping defect identified in the background. There is no evidence of scope expansion beyond the original safety purpose."},"complexity_factors":["Requires cross-referencing external technical engineering documents (Airbus Service Bulletin)","Technical aviation terminology requiring specialized knowledge (DFDR, damping rack, cable harness)","Specific equipment applicability requiring verification of aircraft modification status","Single clear requirement with unambiguous compliance date"],"plain_english_summary":"This rule required operators of Airbus A319/A320/A321 aircraft fitted with Loral F800 flight data recorders (unless already modified per Airbus mod 24959 or SB A320-31-1088 Rev.2) to install a new, better-damped DFDR mounting rack and reroute recorder wiring per Airbus Service Bulletin A320-31-1088 Rev.2. It addresses vibration-induced data loss that could hamper accident investigations. The mandated work was to be completed by 31 July 1998."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-77-loral-dfdr-f800-damping-rack-installation","history":"/api/acts/ad-a320-77-loral-dfdr-f800-damping-rack-installation/history","analysis":"/api/acts/ad-a320-77-loral-dfdr-f800-damping-rack-installation/analysis","conflicts":"/api/acts/ad-a320-77-loral-dfdr-f800-damping-rack-installation/conflicts","importantCases":"/api/acts/ad-a320-77-loral-dfdr-f800-damping-rack-installation/important-cases","documents":"/api/acts/ad-a320-77-loral-dfdr-f800-damping-rack-installation/documents"}}