{"id":"F2006B03073","name":"AD/B747/170 - Main Entry Door Girt Bar Support Fitting","slug":"ad-b747-170-main-entry-door-girt-bar-support-fitting","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42432,"registerId":"commonwealth-F2006B03073-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B747/170 - Main Entry Door Girt Bar Support Fitting","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)  \nBoeing 747 Series Aeroplanes\n\nAD/B747/170 Main Entry Door Girt Bar Support Fitting 3/97\n\nApplicability: Model 747 series with line numbers 1 through 868, excluding freighters and special freighters.\n\nRequirement: Inspect in accordance with FAA AD 96-23-05 Amdt 39-9810.\n\nNote: Boeing Service Bulletin 747-53A2378 Revision 1 refers.\n\nCompliance: As specified in the Requirement Document with an effective date of 27 February 1997.\n\nBackground: The FAA received reports of corrosion on the floor structure supports for the escape slides of the main deck entry doors. The corrosion was found during scheduled deployment tests of the main entry door escape slides. Uncontrolled corrosion could result in separation of the escape slide from the lower door sill during deployment, and subsequently prevent proper operation during an emergency.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1913},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow scope focused solely on inspection of main entry door girt bar support fittings for specific Boeing 747 models. There is no indication of scope creep or expansion beyond the original corrosion safety issue."},"complexity_factors":["Single operative requirement (inspection only)","No definitions section or defined terms","Relies entirely on incorporated external document (FAA AD 96-23-05) for technical procedures","Narrow applicability with specific line number exclusions (1-868) and aircraft type exclusions (freighters)","No conditional logic, exceptions, or cross-references to other legislative provisions"],"plain_english_summary":"This mandatory FAA airworthiness directive requires operators of Boeing 747 production-line aircraft 1–868 (except freight-only) to inspect girt bar support fittings at main deck exit doors for corrosion, following FAA AD 96-23-05 and Boeing Service Bulletin 747-53A2378.  \n\nThe inspections prevent slide detachment during evacuations; compliance was required per the AD’s schedule, effective 27 February 1997."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b747-170-main-entry-door-girt-bar-support-fitting","history":"/api/acts/ad-b747-170-main-entry-door-girt-bar-support-fitting/history","analysis":"/api/acts/ad-b747-170-main-entry-door-girt-bar-support-fitting/analysis","conflicts":"/api/acts/ad-b747-170-main-entry-door-girt-bar-support-fitting/conflicts","importantCases":"/api/acts/ad-b747-170-main-entry-door-girt-bar-support-fitting/important-cases","documents":"/api/acts/ad-b747-170-main-entry-door-girt-bar-support-fitting/documents"}}