{"id":"F2006B02935","name":"AD/B737/34 - Forward Left Entry Door Fuselage Aft Frame Bottom Door Stop Fitting Bolts","slug":"ad-b737-34-forward-left-entry-door-fuselage-aft-frame-bottom-door-stop-fitting-bolts","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42277,"registerId":"commonwealth-F2006B02935-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B737/34 - Forward Left Entry Door Fuselage Aft Frame Bottom Door Stop Fitting Bolts","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Boeing 737 Series Aeroplanes\n\n \n\nAD/B737/34 Forward Left Entry Door Fuselage Aft\n\nFrame Bottom Door Stop Fitting Bolts\n\n\n13/89\n\n \n\nApplicability: Model 737-300 and -400 with line numbers 1770 to 1783, 1785, 1787 to 1789. Requirement:               Action in accordance with FAA Telegraphic AD T89-23-52 Inspection Requirements. Compliance:               Unless already accomplished - within 20 flights after 28 December 1989.\n\nBackground: Country of origin AD. Attachment bolts may have been omitted during manufacture.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, one-off safety directive from 1989 with no evidence of scope creep. It addresses a specific manufacturing defect on specific aircraft and has not expanded beyond its original technical purpose."},"complexity_factors":["Extremely short document — only 4 substantive paragraphs","Zero defined terms requiring interpretation","No cross-references to other legislation (only references external FAA document)","Simple conditional logic: 'Unless already accomplished' is the only qualifier","Narrow, specific applicability (14 specific aircraft line numbers)","Single compliance action with clear deadline","No exceptions, exemptions, or nested conditions"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order — issued by Australia's Civil Aviation Safety Authority (CASA) for specific Boeing 737 aircraft.\n\n**What it does:**\nOrders airlines and aircraft operators to inspect a particular part of the airplane — the bolts that hold the bottom door stop fitting on the forward left entry door's rear frame. The concern is that during manufacturing, these attachment bolts might have been accidentally left out.\n\n**Who it affects:**\nOnly specific Boeing 737-300 and 737-400 aircraft with production line numbers 1770–1783, 1785, and 1787–1789. This is a very narrow, targeted group of planes.\n\n**What must be done:**\nOperators must complete the inspection within 20 flights after 28 December 1989, unless they've already done it.\n\n**Why it matters:**\nMissing bolts on a door frame could compromise the structural integrity of the door — a critical safety component that keeps the cabin pressurized and secure during flight. This directive ensures potentially dangerous manufacturing defects are caught before they cause an accident.\n\n**Key point:** This is a time-critical safety mandate from 1989, adopted from an American (FAA) alert, showing how aviation safety authorities worldwide share urgent defect warnings."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive adopts and applies the country-of-origin (FAA) telegraphic AD to a narrowly defined set of Model 737-300 and -400 aircraft by line number. The instrument does not expand or narrow the described applicability beyond specifying those line numbers and directing compliance with the FAA AD; therefore the scope appears consistent with the original (country-of-origin) action as presented in the text. (Applicability; Requirement; Background)"},"complexity_factors":["Narrow technical applicability limited to specific airframe models and precise line numbers (Applicability).","Short, fixed compliance window (within 20 flights after 28 December 1989) creating a near-term operational deadline (Compliance).","Reliance on an external document (FAA Telegraphic AD T89-23-52) for detailed inspection procedures, requiring operators to obtain and interpret that foreign directive (Requirement).","Underlying safety trigger is a manufacturing omission (missing attachment bolts), which may require inspection and corrective work if found, adding technical and logistical burden (Background; Requirement).","Terse drafting: the AD is brief and delegates technical steps elsewhere, increasing the need to cross-reference and interpret the FAA AD for complete obligations (Requirement)."],"plain_english_summary":"This directive requires urgent inspections of specific Boeing 737‑300/‑400 airframes (listed line numbers) — following FAA Telegraphic AD T89‑23‑52 — because forward left entry door stop fitting attachment bolts may have been omitted during manufacture. It applies to the owners/operators of those aircraft and mandates inspection within 20 flights after 28 December 1989 to find and correct any missing bolts."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b737-34-forward-left-entry-door-fuselage-aft-frame-bottom-door-stop-fitting-bolts","history":"/api/acts/ad-b737-34-forward-left-entry-door-fuselage-aft-frame-bottom-door-stop-fitting-bolts/history","analysis":"/api/acts/ad-b737-34-forward-left-entry-door-fuselage-aft-frame-bottom-door-stop-fitting-bolts/analysis","conflicts":"/api/acts/ad-b737-34-forward-left-entry-door-fuselage-aft-frame-bottom-door-stop-fitting-bolts/conflicts","importantCases":"/api/acts/ad-b737-34-forward-left-entry-door-fuselage-aft-frame-bottom-door-stop-fitting-bolts/important-cases","documents":"/api/acts/ad-b737-34-forward-left-entry-door-fuselage-aft-frame-bottom-door-stop-fitting-bolts/documents"}}