{"id":"F2006B08503","name":"AD/CF700/14 - Compressor Discs","slug":"ad-cf700-14-compressor-discs","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51217,"registerId":"commonwealth-F2006B08503-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CF700/14 - Compressor Discs","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 106 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nGeneral Electric Turbine Engines \\- CF700 Series\n\nAD/CF700/14 Compressor Discs 9/85\n\nApplicability: CF700-2C, \\-2D, \\-2D-2 engines with compressor discs identified by Serial numbers.\n\nRequirement: 1. Remove from service sixth stage compressor discs, P/N 37D401316P101, and seventh stage compressor discs, P/N 37D401317P101, having S/Nos. listed below and replace with serviceable discs:\n\n| Serial Numbers: |                                                         |\n| --------------- | ------------------------------------------------------- |\n| Stage 6:        | 07911, 07932,                                           |\n| Stage 7:        | 08742, 08745, 08756, 08760, 08761, 08767, 08806, 08815, |\n|                 | 08818, 08822, 08825, 08826, 08832, 08849, 08851, 08853, |\n|                 | 08867, 08873, 08876, 08879, 08891, 08895, 08897, 08899, |\n|                 | 09120, 09127, 09145.                                    |\n\nRequirement: 2. Inspect first stage compressor discs, P/Nos. 37E501428P102 and 37E50142SP106, with S/Nos. listed below for material properties in accordance with General Electric Company CJ610 engine alert SB No. (CJ610) A72-130, dated March 8, 1978, or CF700 engine alert SB No. (CF700) A72-140, dated March 8, 1978, as appropriate, or later approved revision.\n\nSerial Numbers: 09804, 09811, 09825, 09847, 09861.\n\n    3. Discs determined to be satisfactory per General Electric Company inspection procedures may be returned to service. Replace unsatisfactory discs with serviceable discs.\n\n    4. Discs removed from service are to be forwarded to General Electric Company for evaluation; or\n\nFAA AD 78-07-06 Amdt. 39-3169; or AD/GE-T/33\n\nCompliance: Within 10 flights after 17 March 1978.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive addressing a specific manufacturing defect in specific engine components. It has not expanded beyond its original purpose of grounding/inspecting specific defective parts."},"complexity_factors":["Very short document (approximately 200 words)","Only 4 operational requirements, clearly numbered","No defined terms section — all technical terms are explicit part/serial numbers","No cross-references to other legislation (only references to manufacturer service bulletins)","Simple conditional logic: 'if unsatisfactory, then replace'","Specific, closed list of affected items (27 serial numbers for removal, 5 for inspection)","Single compliance date with straightforward calculation (10 flights after fixed date)"],"plain_english_summary":"This AD requires operators of GE CF700-2C/ -2D/ -2D-2 engines (used on aircraft such as the Dassault Falcon 20) to immediately remove certain sixth- and seventh-stage compressor discs from service, inspect specified first-stage discs per GE procedures,replace any that fail, and return removed parts to GE for evaluation. It addresses a manufacturing-related safety risk that could cause catastrophic engine failure; compliance was due within 10 flights after 17 March 1978."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive confines action to specific CF700 engine models, part numbers and listed serial numbers and prescribes inspection and replacement procedures. It does not expand to other engines, parts or serial ranges beyond those listed; therefore the scope remains narrowly targeted as stated in the instrument."},"complexity_factors":["Narrow, technical scope defined by specific part numbers and serial-number lists increases tracking and record-keeping burden","Mandated inspections reference external GE service alerts (CJ610 A72-130 and CF700 A72-140), requiring access to and reliance on manufacturer procedures","Short compliance window (10 flights after 17 March 1978) creates scheduling and operational pressure for operators","Multiple actions required: removal, inspection, replacement and forwarding of removed parts to GE (administrative and logistical steps)","Cross-reference to FAA AD and another AD creates inter-jurisdictional links that may affect interpretation or supporting documentation"],"plain_english_summary":"This airworthiness directive requires operators of GE CF700-2C, -2D and -2D-2 engines to remove identified sixth- and seventh-stage compressor discs and to inspect listed first-stage discs for material properties; any discs failing inspection must be replaced. Operators must follow General Electric service alert procedures (or later approved revisions) and forward removed discs to GE. Actions must be completed within 10 flights after 17 March 1978, so operators pay for removals, replacements, inspections and shipping (Requirements 1–4; Compliance)."},"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-cf700-14-compressor-discs","history":"/api/acts/ad-cf700-14-compressor-discs/history","analysis":"/api/acts/ad-cf700-14-compressor-discs/analysis","conflicts":"/api/acts/ad-cf700-14-compressor-discs/conflicts","importantCases":"/api/acts/ad-cf700-14-compressor-discs/important-cases","documents":"/api/acts/ad-cf700-14-compressor-discs/documents"}}