{"id":"F2006B11402","name":"AD/MU-2/8 Amdt 1 - Front Windshield Outer Pane - Inspection and Windshield De-Fogging Air Temperature Warming System - Installation","slug":"ad-mu-2-8-amdt-1-front-windshield-outer-pane-inspection-and-windshield-de-fogging-air-temperature-wa","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":57303,"registerId":"commonwealth-F2006B11402-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/MU-2/8 Amdt 1 - Front Windshield Outer Pane - Inspection and Windshield De-Fogging Air Temperature Warming System - 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)  \nMitsubishi MU-2 Series Aeroplanes\n\nAD/MU-2/8\n\nAmdt 1\n\n  \nFront Windshield Outer Pane \\- Inspection and Windshield De-Fogging Air Temperature Warming System - Installation\n\n  \n10/82\n\nApplicability: MU-2B/-10/-15/-20/-25/-26: S/N 005 thru S/N 328.\n\nMU-2B-30/-35/-36: S/N 501 thru S/N 673. except S/N 313, 321, 652, 661 and\n\naircraft previously modified by MU-2 Service Recommendation No. 027A. Document: Mitsubishi MU-2 SB No. 163B dated 16 November, 1978.\n\nCompliance: Unless already accomplished, at every pre-flight inspection after 31 October, 1982.\n\nNote: For aircraft maintained in accordance with ANO 100.5.1, this Directive shall be entered on the maintenance release as maintenance required. The inspection may be performed by the pilot in command, in which case certification is not required. In all other cases certification may be made on the maintenance release. This inspection may also be performed and certified by any Licensed Aircraft Maintenance Engineer.\n\nBackground: Optical distortion and instances of cracking in the front windshield outer pane have been reported. Abnormally hot de-fogging air due to malfunctioning of the air conditioning system has been stated as cause of the occurrences.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a narrow, targeted safety directive addressing a specific airframe defect. The scope remains exactly as originally intended: preventing windshield failures in MU-2 aircraft through inspection and system modification."},"complexity_factors":["Single, specific technical requirement with clear applicability criteria","Only 4 defined serial number ranges/exceptions to track","Simple conditional compliance: 'unless already accomplished' + date trigger","One cross-reference to external document (Mitsubishi Service Bulletin 163B)","Straightforward operational note distinguishing pilot-performed vs engineer-certified maintenance","No nested exceptions or recursive definitions"],"plain_english_summary":"CASA has issued a mandatory Airworthiness Directive for certain Mitsubishi MU‑2B aircraft requiring a preflight visual inspection of the front windshield outer pane and installation of a windshield de‑fogging air temperature warming system. It applies to owners/operators of MU‑2Bs from roughly 1963–1980s serial numbers (excluding certain modified aircraft).\n\nThe action responds to windshields cracking from excessively hot de‑fogging air, causing optical distortion and structural risk. Pilots may perform the preflight check; maintenance engineers must record and certify work where required."},"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 a recurring inspection requirement for listed MU‑2 serial numbers to address reported windshield distortion/cracking caused by overheated de‑fogging air. It confines applicability to specified serial numbers and excludes aircraft already modified by Service Recommendation No. 027A, aligning with the service bulletin it cites. There is no expansion of scope beyond the listed aircraft or the stated inspection purpose; ambiguity exists only between the title's reference to 'installation' and the body’s inspection mandate."},"complexity_factors":["Detailed serial-numbered applicability with specific inclusions and exclusions (multiple S/N ranges and listed exceptions).","Recurring compliance frequency (every pre‑flight inspection after a set date) creating ongoing operational burden.","Certification rule split: pilot-in-command may perform inspection without certification in some cases; otherwise certification/maintenance‑release entry required (cross‑references ANO 100.5.1).","Reference to an external service bulletin (Mitsubishi MU‑2 SB No. 163B) and exclusion for aircraft modified by Service Recommendation No. 027A — reliance on other documents for technical content.","Operative text requires inspection but the title refers to 'Installation' of a warming system, producing a potential ambiguity between required inspections and any installation obligation.","Potential for follow‑on corrective work (repair or system adjustment) is implied but not prescribed, leaving scope of required remedial action and cost allocation open.","Delegation of technical judgement to pilots or Licensed AMEs for defect identification creates variability in enforcement and compliance."],"plain_english_summary":"Requires pilots/operators of specified Mitsubishi MU‑2 serial numbers to inspect the front windshield outer pane at every pre‑flight after 31 October 1982. The check — which may be performed and certified by the pilot‑in‑command (or by a Licensed Aircraft Maintenance Engineer where required) and entered on the maintenance release per ANO 100.5.1 — responds to reported optical distortion and cracking attributed to abnormally hot de‑fogging air; operators bear inspection time and any corrective work."}},"importantCases":[],"_links":{"self":"/api/acts/ad-mu-2-8-amdt-1-front-windshield-outer-pane-inspection-and-windshield-de-fogging-air-temperature-wa","history":"/api/acts/ad-mu-2-8-amdt-1-front-windshield-outer-pane-inspection-and-windshield-de-fogging-air-temperature-wa/history","analysis":"/api/acts/ad-mu-2-8-amdt-1-front-windshield-outer-pane-inspection-and-windshield-de-fogging-air-temperature-wa/analysis","conflicts":"/api/acts/ad-mu-2-8-amdt-1-front-windshield-outer-pane-inspection-and-windshield-de-fogging-air-temperature-wa/conflicts","importantCases":"/api/acts/ad-mu-2-8-amdt-1-front-windshield-outer-pane-inspection-and-windshield-de-fogging-air-temperature-wa/important-cases","documents":"/api/acts/ad-mu-2-8-amdt-1-front-windshield-outer-pane-inspection-and-windshield-de-fogging-air-temperature-wa/documents"}}