{"id":"F2006B03711","name":"AD/BEECH 200/59 - Pressurisation Control System Pneumatic Tubing Inspection","slug":"ad-beech-200-59-pressurisation-control-system-pneumatic-tubing-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43301,"registerId":"commonwealth-F2006B03711-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 200/59 - Pressurisation Control System Pneumatic Tubing Inspection","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)  \nBeechcraft 200 (Super King Air) Series Aeroplanes\n\nAD/BEECH 200/59 Pressurisation Control System\n\nPneumatic Tubing Inspection\n\n  \n2/98\n\nApplicability: All beech 200 series aircraft with serial numbers BB-114 through BB-1553, BL-1 through B-72, BL-124 through BL-140, BN-1 through BN-4 and BT-1 through BT- 38.\n\nRequirement: Inspect and re-route the environmental air conditioning and pressurisation control system pneumatic tubing in accordance with Raytheon Aircraft Mandatory SB 2676 dated January, 1997.\n\nNote: FAA AD 97-23-17 Amdt 39-10207 and DGAC AD 97-353-(AB) refers.\n\nCompliance: Unless previously carried out at the next schedule inspection but no later than the next 200 hours time in service from the effective date of this Directive.\n\nThis airworthiness directive becomes effective on 29 January 1998.\n\nBackground: This directive being raised on receipt of FAA AD and advice that when a pilot requested a passenger to open the cabin door a passenger was injured when ejected from the aircraft onto the tarmac.\n\nSubsequent investigation by the manufacturer confirmed that heat from the co pilot’s foot warmer outlet and associated plumbing can soften the plastic pressurisation control system pneumatic tubing sufficiently to cause permanent collapse when the line is subject to vacuum. This will result in loss of vacuum to the outflow/safety valves and this could prevent depressurisation of the aircraft. If the cabin door is operated with the aircraft partially pressurised injury to passengers and/or ground personnel may occur.\n\nThe de-icing indicator pneumatic tubing also has the potential for heat damage from the co-pilot’s foot warmer. This tubing could rupture rendering the de-icing indicator inoperative.","sortOrder":0}],"analysis":{"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"},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The directive implements the corrective action described by the FAA AD and Raytheon Mandatory SB for the listed Beech 200 serial numbers and confines obligations to inspection and rerouting per the SB. It does not broaden applicability beyond the specified serial ranges or add obligations beyond the manufacturer’s corrective procedure, so the stated scope remains consistent with the safety remedy set out in the instrument (Applicability; Requirement; Note)."},"complexity_factors":["Applicability limited to multiple specific serial‑number ranges requiring operators to check fleet serials before action (Applicability).","Technical task: inspection and physical rerouting of pneumatic tubing per a manufacturer service bulletin — requires qualified maintenance personnel and possibly parts (Requirement: Raytheon SB 2676).","Compliance timing: required at next scheduled inspection or within 200 flight hours; creates scheduling and downtime pressure for operators (Compliance).","Safety‑critical consequence depends on correct execution: collapsed tubing can cause loss of vacuum to outflow/safety valves with risk when operating doors (Background).","Directive relies on external documents and foreign ADs for context and method (FAA AD 97‑23‑17; DGAC reference; Note).","Cost and operational impact borne by aircraft operators (inspection, labour, possible parts and out‑of‑service time) (Compliance; Background)."],"plain_english_summary":"This Airworthiness Directive requires operators of the listed Beech 200 (Super King Air) aircraft to inspect and reroute environmental air‑conditioning and pressurisation pneumatic tubing per Raytheon Mandatory Service Bulletin 2676 to prevent tubing collapse or rupture from heat at the co‑pilot’s foot warmer (Requirement; Applicability). Work must be done at the next scheduled inspection or within 200 flight hours; operators pay for the inspection, labour and rerouting and may have aircraft out of service during compliance (Compliance; Background)."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a targeted safety directive addressing a specific mechanical defect in specific aircraft. It has not expanded beyond its original purpose of preventing pressurisation system failures caused by heat damage to pneumatic tubing."},"complexity_factors":["Single, specific mechanical requirement (inspect and re-route tubing)","Limited applicability (specific serial number ranges only)","Clear compliance deadline (next inspection or 200 hours)","No nested exceptions or conditional logic","Only one defined reference (Raytheon SB 2676)","Short document (under 300 words)"],"plain_english_summary":"This AD requires owners/operators of certain Beechcraft 200 (Super King Air) aircraft to inspect and re‑route plastic pneumatic tubes per Raytheon SB 2676 because heat from the co‑pilot’s foot warmer can soften the tubing. Collapsed or ruptured tubes can prevent proper depressurisation and de‑icing indication, creating a risk of violent ejection or loss of safety systems. Compliance is due at the next inspection or within 200 flight hours."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-200-59-pressurisation-control-system-pneumatic-tubing-inspection","history":"/api/acts/ad-beech-200-59-pressurisation-control-system-pneumatic-tubing-inspection/history","analysis":"/api/acts/ad-beech-200-59-pressurisation-control-system-pneumatic-tubing-inspection/analysis","conflicts":"/api/acts/ad-beech-200-59-pressurisation-control-system-pneumatic-tubing-inspection/conflicts","importantCases":"/api/acts/ad-beech-200-59-pressurisation-control-system-pneumatic-tubing-inspection/important-cases","documents":"/api/acts/ad-beech-200-59-pressurisation-control-system-pneumatic-tubing-inspection/documents"}}