{"id":"F2008L01491","name":"AD/A320/214 - Rear Fuselage Structure Reinforcement","slug":"ad-a320-214-rear-fuselage-structure-reinforcement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":119836,"registerId":"commonwealth-F2008L01491-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Airbus Industrie A319, A320 and A321 Ser","sectionType":"division","heading":"Airbus Industrie A319, A320 and A321 Series Aeroplanes","content":"### Airbus Industrie A319, A320 and A321 Series Aeroplanes\n\n| AD/A320/214 | Rear Fuselage Structure Reinforcement | 6/2008 |\n| ----------- | ------------------------------------- | ------ |\n\n| Applicability: | All Model A321 aircraft, without AIRBUS modification 25791 incorporated in production or AIRBUS Service Bulletin A320-53-1130 incorporated in service.                                                   |\n| -------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with DGAC AD F-1999-051-125(B).Note: AIRBUS Service Bulletin A320-53-1130 original issue, or later DGAC/EASA approved revision, refers.                                             |\n| Compliance:    | Unless already accomplished, before 5 July 2008.                                                                                                                                                         |\n|                | This Airworthiness Directive becomes effective on 5 June 2008.                                                                                                                                           |\n| Background:    | The rear fuselage structure requires reinforcement between frames 62 and 64, in order to increase the strength margin in the case of undetected tail scrape of the rear of the fuselage with the ground. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n16 April 2008","sortOrder":0},{"sectionNumber":"AD/A320/214","sectionType":"part","heading":"AD/A320/214","content":"## AD/A320/214","sortOrder":1},{"sectionNumber":"Rear Fuselage Structure Reinforcement","sectionType":"part","heading":"Rear Fuselage Structure Reinforcement","content":"## Rear Fuselage Structure Reinforcement","sortOrder":2},{"sectionNumber":"6/2008","sectionType":"part","heading":"6/2008","content":"## 6/2008","sortOrder":3}],"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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific structural vulnerability in a specific aircraft type. It has not expanded beyond its original purpose of mandating rear fuselage reinforcement for tail scrape protection."},"complexity_factors":["Single, specific technical requirement (fuselage reinforcement)","Clear applicability criteria (specific aircraft model, specific exclusions for modified aircraft)","Simple compliance structure (one deadline, one action)","No nested exceptions or conditional logic","Short document length (approximately 150 words of substantive content)","Only one cross-reference to external technical document (DGAC AD and Airbus Service Bulletin)","No defined terms section"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators of specified Airbus A321s (those without Airbus mod 25791 or the A320-53-1130 repair) to install reinforcement on the rear fuselage between frames 62–64 to protect against tail-scrape damage that can weaken structure.\n\nThe AD took effect 5 June 2008 and mandates compliance by 5 July 2008, following the procedures in DGAC AD F-1999-051-125(B) and the referenced Airbus service bulletin."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive stays within its original scope: it targets A321 aeroplanes without the specified modification or service bulletin and prescribes a structural reinforcement between frames 62 and 64. There is no expansion of applicability or remedy beyond directing compliance with the referenced DGAC AD/service bulletin (Applicability; Requirement; Background)."},"complexity_factors":["Conditional applicability: only Model A321 aircraft lacking mod 25791 or SB A320‑53‑1130 are affected (Applicability).","External-reference dependency: mandated compliance references DGAC AD F‑1999‑051‑125(B) and the Airbus service bulletin, creating reliance on foreign authority documents (Requirement; Note).","Fixed compliance deadline: work must be done before 5 July 2008, requiring operators to schedule/finance maintenance within a short window (Compliance).","Technical nature of work: structural reinforcement between frames 62 and 64 requires licensed maintenance and potential downtime (Background).","Enforcement and effective date: directive effective 5 June 2008, placing enforcement responsibility with CASA and planning burden on operators (Compliance)."],"plain_english_summary":"This Airworthiness Directive requires operators of Airbus A321 aeroplanes that have not received Airbus modification 25791 or Service Bulletin A320‑53‑1130 to reinforce the rear fuselage between frames 62 and 64 to restore strength margin against undetected tail scrape (Applicability; Background). Work must be performed in accordance with DGAC AD F‑1999‑051‑125(B) or the stated service bulletin and completed by 5 July 2008; operators bear the cost and schedule the maintenance while CASA enforces the directive (Requirement; Compliance)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-214-rear-fuselage-structure-reinforcement","history":"/api/acts/ad-a320-214-rear-fuselage-structure-reinforcement/history","analysis":"/api/acts/ad-a320-214-rear-fuselage-structure-reinforcement/analysis","conflicts":"/api/acts/ad-a320-214-rear-fuselage-structure-reinforcement/conflicts","importantCases":"/api/acts/ad-a320-214-rear-fuselage-structure-reinforcement/important-cases","documents":"/api/acts/ad-a320-214-rear-fuselage-structure-reinforcement/documents"}}