{"id":"F2006B01867","name":"AD/A320/12 Amdt 1 - Flight Controls - EFCS","slug":"ad-a320-12-amdt-1-flight-controls-efcs","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41063,"registerId":"commonwealth-F2006B01867-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/A320/12 Amdt 1 - Flight Controls - EFCS","content":"![](image.001.png)\n\n![](image.001.png)  \nAIRWORTHINESS DIRECTIVE\n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/A320/12 and issues the following AD under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\n![](image.001.png)\n\nAirbus Industrie A319, A320 and A321 Series Aeroplanes\n\nAD/A320/12\n\nAmdt 1\n\n  \nFlight Controls \\- EFCS 2/2002\n\nApplicability: Model A320 series 100 and 200 aeroplanes without Airbus Industrie Modification 22371 embodied during production or in accordance with Airbus Industrie Service Bulletin (SB) A320-27-1032.\n\nNote 1: Modification 22371 was embodied during production on MSN 158, 159, 190 and subsequent aeroplanes.\n\nRequirement: Action in accordance with Airbus Industrie SB A320-27-1031.\n\nNote 2: DGAC 90-138-014(B)R1 refers.\n\nCompliance: Initial compliance remains unchanged as “Prior to 8 August 1990, and thereafter at intervals not exceeding one week” until SB A320-27-1032 is incorporated.\n\nThis Amendment becomes effective on 21 February 2002.\n\nBackground: DGAC have advised that in order to avoid complete loss of pitch electrical control (reversion to pitch back-up) associated with increase of manual pitch trim control loads of Trimmable Horizontal Stabiliser (THS) (pitch trim wheel), action in accordance with the Requirement Document is necessary.\n\nThe original issue of this Directive required repetitive inspections to ensure that the THS actuator was not jammed. Additionally, the Directive imposed operational limitations.\n\nThis Amendment clarifies the applicability and introduces an optional terminating action for the repetitive inspections. The Amendment also removes the operational limitation from the Directive, which was included in the Airbus Industrie Master Minimum Equipment List by Temporary Revision 81.\n\nAirbus Industrie A319, A320 and A321 Series Aeroplanes\n\nAD/A320/12 Amdt 1 (continued)\n\nThe original issue of this Airworthiness Directive became effective on 8 August 1990.\n\n![](image.002.png)  \n\nEugene Paul Holzapfel\n\nDelegate of the Civil Aviation Safety Authority 18 December 2001\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 30 January 2002.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment stays within the original scope of the 1990 directive. It clarifies applicability and offers an optional terminating action, but does not expand beyond the original safety purpose of addressing pitch control system risks in A320 aircraft."},"complexity_factors":["Short, single-purpose document (2 pages)","Only 2 defined technical terms in notes (MSN — Manufacturer Serial Number, and cross-reference to French DGAC directive)","Simple conditional structure: applies to specific aircraft models UNLESS specific modification embodied","Clear compliance timeline with single terminating condition","Minimal cross-referencing (only to Airbus Service Bulletins and one French aviation directive)","No nested exceptions or complex definitional sections"],"plain_english_summary":"This AD revokes AD/A320/12 and requires owners/operators of certain Airbus A320-100/200 aircraft (those without Modification 22371) to comply with Airbus Service Bulletin A320-27-1031 for inspections/repairs. It clarifies affected airframes and removes prior operational limits.\n\nIt also adds an optional terminating action — install Mod 22371 per Service Bulletin A320-27-1032 to end repetitive inspections — addressing a risk of complete loss of electrical pitch control and increased pitch-trim effort."},"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":3,"scope_assessment":{"changed":true,"description":"This amendment narrows and clarifies applicability (explicitly targets series 100/200 aircraft without Mod 22371 and notes MSNs where the mod was embodied), removes a prior operational limitation, and introduces an optional terminating modification (SB A320-27-1032) for the repetitive inspections. Mechanically, it shifts from an indefinite operational restriction plus inspections to inspections until an optional modification is embodied."},"complexity_factors":["Narrow technical scope: applies only to A319/A320/A321 series 100/200 aircraft lacking Mod 22371 (explicit applicability reduces breadth but raises technical specificity).","Dependency on external documents: compliance and terminating action are defined by Airbus SB A320-27-1031 and SB A320-27-1032 (operators must obtain and follow SB instructions).","Repetitive compliance obligation: initial and continuing inspections are required weekly until the terminating SB is incorporated (ongoing maintenance burden).","Optional terminating action: modification in SB A320-27-1032 ends the inspection requirement, creating a one-off upgrade vs recurring cost trade-off for operators.","Operational change: removal of a prior operational limitation alters operator procedures and recordkeeping (coordination with MMEL revision noted).","Regulatory cross-reference: cites DGAC directive and production MSN exceptions (MSN 158, 159, 190 onward) requiring careful fleet applicability checks."],"plain_english_summary":"This AD replaces an earlier directive and requires operators of Airbus A319/A320/A321 (series 100/200) aeroplanes without production Modification 22371 to carry out weekly inspections of the Trimmable Horizontal Stabiliser (THS) actuator for jamming, following Airbus Service Bulletin A320-27-1031, until the optional terminating modification in SB A320-27-1032 is embodied. It also narrows and clarifies which aircraft are affected and removes a previously imposed operational limitation. The stated aim is to avoid loss of electrical pitch control caused by increased manual pitch‑trim loads."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-12-amdt-1-flight-controls-efcs","history":"/api/acts/ad-a320-12-amdt-1-flight-controls-efcs/history","analysis":"/api/acts/ad-a320-12-amdt-1-flight-controls-efcs/analysis","conflicts":"/api/acts/ad-a320-12-amdt-1-flight-controls-efcs/conflicts","importantCases":"/api/acts/ad-a320-12-amdt-1-flight-controls-efcs/important-cases","documents":"/api/acts/ad-a320-12-amdt-1-flight-controls-efcs/documents"}}