{"id":"F2013L01928","name":"AD/A320/14 Amdt 1 — Landing Gear – Interruption of Retraction Sequence","slug":"ad-a320-14-amdt-1-landing-gear-interruption-of-retraction-sequence","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":128061,"registerId":"commonwealth-F2013L01928-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 Aeroplane","content":"### Airbus Industrie A319, A320 and A321 Series Aeroplane\n\n| AD/A320/14 Amdt 1 | Landing Gear - Interruptionof Retraction Sequence | 23/2013 |\n| ----------------- | ------------------------------------------------- | ------- |\n\n| Applicability: | This AD applies to all Airbus Industrie A320 models without Airbus Industrie modification 21920.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |\n| -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | The registered operator is required to take action in accordance with Airbus Industrie Service Bulletin A320-32-1048.Note: Direction Générale de l’Aviation Civile (DGAC) AD 90-026-007(B)R2 also refers.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |\n| Compliance:    | The registered operator must take the required action before the end of 31 December 2013.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |\n|                | The effective date of this AD is 14 November 2013.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |\n| Background:    | Airbus Industrie has advised that an interruption of electrical power during the landing gear retraction sequence can cause the de-energisation of relay 48GA. This in turn can result in hydraulic pressure being removed from the landing gear retraction system thus allowing the landing gear to extend and lock in the down position due to the effect of gravity.AD/A320/14 was issued in 1990 and applied to A320-111, A320-211 and A320-231 aircraft. It referenced DGAC AD 90-026-007(B)R1.In 1992, the DGAC issued AD 90-026-007(B)R2.This AD is issued to update the DGAC AD reference and to apply the requirement to all A320 models.There are no changes to the initial requirement in AD/A320/14. |\n\n![](image.001.png)  \nPeter Nikolic  \nDelegate of the Civil Aviation Safety Authority\n\n11 November 2013","sortOrder":0},{"sectionNumber":"AD/A320/14 Amdt 1","sectionType":"part","heading":"AD/A320/14 Amdt 1","content":"## AD/A320/14 Amdt 1","sortOrder":1},{"sectionNumber":"Landing Gear - Interruptionof Retraction","sectionType":"part","heading":"Landing Gear - Interruptionof Retraction Sequence","content":"## Landing Gear \\- Interruption  \nof Retraction Sequence","sortOrder":2},{"sectionNumber":"23/2013","sectionType":"part","heading":"23/2013","content":"## 23/2013","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":true,"description":"The original 1990 directive applied only to three specific A320 variants (A320-111, A320-211, A320-231). This 2013 amendment expands coverage to 'all A320 models' including the A319 and A321 series, significantly broadening the scope while maintaining the same technical requirement."},"complexity_factors":["Very short document (approximately 250 words)","Only 1 defined term implicitly referenced (modification 21920)","Single compliance requirement referencing an external technical document (Airbus Service Bulletin)","No nested conditional logic or exceptions","Straightforward applicability test (all models without specific modification)","Background section provides clear context without legal cross-referencing"],"plain_english_summary":"This CASA Airworthiness Directive mandates owners/operators of Airbus A319/A320/A321 aircraft that don’t have factory modification 21920 to carry out the repair in Airbus Service Bulletin A320-32-1048. It fixes an electrical fault where loss of power to relay 48GA during gear retraction can drop and lock the wheels.\n\nCompleted by 31 December 2013, the measure prevents in‑flight gear deployment that could cause drag, damage, or control problems."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The AD expands applicability from specific A320 variants named in the original 1990 AD (A320-111, -211 and -231) to all A320 models without mod 21920 and updates the referenced DGAC AD to 90-026-007(B)R2, while keeping the original required action unchanged (Background; Applicability)."},"complexity_factors":["Narrow technical focus: single failure mode (electrical interruption during retraction) and single mitigation (service bulletin action).","Limited applicability: applies to aircraft without Airbus modification 21920, requiring careful fleet identification (Applicability).","External cross-references: mandates compliance with Airbus Service Bulletin A320-32-1048 and updates a DGAC AD reference, increasing document-tracking requirements (Requirement; Background).","Fixed compliance deadline requiring operational scheduling before 31 December 2013 (Compliance).","No change to substantive technical requirement from the original AD, but scope broadened to all A320 models, which affects which operators must act (Background)."],"plain_english_summary":"This Airworthiness Directive requires operators of Airbus A319/A320/A321 aircraft (those without Airbus modification 21920) to carry out the corrective actions set out in Airbus Service Bulletin A320-32-1048 to prevent the landing gear from extending and locking if electrical power is lost during retraction (Applicability; Requirement; Background). Registered operators must complete the work by 31 December 2013; the operator arranges and pays for the work and must follow the Service Bulletin (Compliance; Requirement)."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-14-amdt-1-landing-gear-interruption-of-retraction-sequence","history":"/api/acts/ad-a320-14-amdt-1-landing-gear-interruption-of-retraction-sequence/history","analysis":"/api/acts/ad-a320-14-amdt-1-landing-gear-interruption-of-retraction-sequence/analysis","conflicts":"/api/acts/ad-a320-14-amdt-1-landing-gear-interruption-of-retraction-sequence/conflicts","importantCases":"/api/acts/ad-a320-14-amdt-1-landing-gear-interruption-of-retraction-sequence/important-cases","documents":"/api/acts/ad-a320-14-amdt-1-landing-gear-interruption-of-retraction-sequence/documents"}}