{"id":"F2006B02302","name":"AD/AL 60/6 - Wing - Lower Skin Inspection - Aileron Interference","slug":"ad-al-60-6-wing-lower-skin-inspection-aileron-interference","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41532,"registerId":"commonwealth-F2006B02302-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AL 60/6 - Wing - Lower Skin Inspection - Aileron Interference","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Aermacchi - Lockheed AL 60 Series Aeroplanes\n\n \n\nAD/AL 60/6 Wing - Lower Skin Inspection - Aileron Interference 6/63\n\nApplicability: Models AL 60 and AL 60B. Document:  Aermacchi Lockheed 60 SB No. 4.\n\nCompliance: At each daily inspection. 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\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-purpose airworthiness directive focused on a specific safety inspection for a specific aircraft type. It has not expanded beyond its original safety-critical purpose."},"complexity_factors":["Very short document (approximately 150 words)","Only 2 defined applicability terms (Models AL 60 and AL 60B)","Single compliance requirement with straightforward alternatives","No cross-references to other legislation beyond a single document reference (SB No. 4)","Simple conditional logic (pilot vs. engineer certification paths)","No nested exceptions or complex definitions"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — a mandatory safety instruction issued by Australia's Civil Aviation Safety Authority (CASA) for specific aircraft.\n\n**What it does:**\n- Requires owners and operators of **Aermacchi-Lockheed AL 60 and AL 60B aircraft** to inspect the **lower wing skin** for **aileron interference** (checking that the aileron — the movable flap on the wing that controls rolling — isn't rubbing against or damaging the wing's lower surface).\n\n**Who must comply:**\n- Anyone operating or maintaining these specific aircraft models.\n\n**When and how:**\n- **Every day** the aircraft flies (at each daily inspection).\n- If following older maintenance rules (ANO 100.5.1), this check must be written on the maintenance release as required maintenance.\n- **Pilots can do this check themselves** — no formal certification needed if they do it.\n- **Otherwise**, a Licensed Aircraft Maintenance Engineer (LAME) must perform and certify the inspection on the maintenance release.\n\n**Why it matters:**\nAileron interference can damage the wing structure, potentially leading to loss of control or structural failure. This AD ensures daily checks catch problems before they become dangerous."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The provided text sets a targeted, procedural requirement for AL 60 and AL 60B aeroplanes and does not indicate any alteration to that scope. There is no material in the text suggesting the scope of applicability or obligations has been expanded or narrowed from an earlier version; the Directive as presented applies only to the specified models and prescribes the daily inspection and the recording/certification options described (Applicability; Compliance)."},"complexity_factors":["Narrow applicability limited to two specific aircraft models (AL 60 and AL 60B) — reduces breadth of coverage (Applicability).","Single recurring action required (inspection at each daily inspection) — low procedural complexity but high frequency (\"At each daily inspection\").","Multiple performer/recording pathways: pilot in command may perform without certification; Licensed AME may perform and certify; aircraft under ANO 100.5.1 require maintenance release entry — creates conditional compliance steps (Compliance).","Operational detail deferred to an external document (Aermacchi Lockheed 60 SB No. 4) — requires cross‑reference to implement correctly (Document).","Regulatory interaction with ANO 100.5.1 — imposes an administrative recording step for aircraft under that rule (Compliance), adding a minor compliance burden depending on regulatory status."],"plain_english_summary":"What this instrument does (mechanical change)\n\n- Requires a specific inspection of the wing lower skin to check for aileron interference on Aermacchi‑Lockheed AL 60 and AL 60B aeroplanes (Applicability; Document: Aermacchi Lockheed 60 SB No. 4).\n- The inspection must be carried out at each daily inspection (\"At each daily inspection\").\n- For aircraft maintained under ANO 100.5.1, the Directive must be entered on the maintenance release as \"maintenance required\" (\"For aircraft maintained in accordance with ANO 100.5.1 this Directive shall be entered on the maintenance release as maintenance required\").\n\nWho is affected\n\n- Owners and operators of Aermacchi‑Lockheed AL 60 and AL 60B aircraft (Applicability).\n- Pilots in command who carry out daily inspections may perform this specific check themselves and, when they do so, no certification is required (\"The inspection may be performed by the pilot in command, in which case certification is not required\").\n- Licensed Aircraft Maintenance Engineers (AMEs) who may perform and certify the inspection, and other maintenance personnel who must record the inspection on the maintenance release where ANO 100.5.1 applies (\"This inspection may also be performed and certified by any Licensed Aircraft Maintenance Engineer\"; \"In all other cases certification may be made on the maintenance release\").\n\nWhy it matters (stated purpose and practical effects)\n\n- Stated purpose: to detect aileron interference by inspecting the wing lower skin (reference to the subject of the Directive and the referenced SB No. 4).\n\n- Who pays: the aircraft owner/operator bears the recurring cost (time or labour) of performing the daily inspection and any follow‑up repairs. The instrument does not provide funding or specify charges; it prescribes an operational requirement (Compliance: At each daily inspection).\n\n- Who decides and how: the rule prescribes when the inspection must occur (daily) and who may perform it: pilot in command (no certification required) or, alternatively, a Licensed AME (who may certify the work) or maintenance personnel who must record the work on the maintenance release if ANO 100.5.1 applies (Compliance provisions). There is little agency discretion in whether the inspection must occur; discretion remains in who performs it and how the inspection is recorded subject to the ANO requirement.\n\n- Behavioural and market effects: the requirement is operationally lightweight but recurring. It can shift some maintenance activity from paid AMEs to pilots (if pilots perform the inspection), reducing paid maintenance hours for some operators; alternatively, operators may continue to use AMEs and record the inspection on the maintenance release, sustaining demand for certified maintenance. The referenced Aermacchi Lockheed 60 SB No. 4 supplies the specific inspection procedure, so implementers must consult that document to know the technical steps.\n\nCosts, incentives, trade‑offs and risks (mechanisms, not verdict)\n\n- Compliance burden: recurring time cost at each daily inspection to perform the check and, where ANO 100.5.1 applies, to make a maintenance release entry. The text allows a low‑formality path (pilot performs without certification) which lowers immediate paperwork for some operators (\"may be performed by the pilot in command, in which case certification is not required\").\n\n- Incentives and substitution: permitting pilots to perform the inspection creates an incentive to substitute unpaid pilot inspections for paid AME work; permitting AMEs to perform and certify keeps the certified maintenance market available. The operator will choose between convenience (pilot inspection) and the formal record/certification route depending on their regulatory status, risk tolerance, and commercial factors.\n\n- Implementation risk: the Directive does not specify detailed inspection technique in the text provided; it references Aermacchi Lockheed 60 SB No. 4 for detail. That creates reliance on the referenced service bulletin for consistent inspection quality. If pilots perform the check without certification, there is a risk that less‑trained inspectors may miss defects that a licensed maintainer would catch (trade‑off between convenience and inspection quality).\n\n- Administrative cost vs. safety benefit: the daily recurring nature raises a small recurring cost (time, possible maintenance follow‑up) in exchange for earlier detection of aileron interference. The net effect depends on frequency and detectability of the underlying condition and on follow‑up repair costs.\n\nOperational mechanics to note\n\n- The Directive applies only to AL 60 and AL 60B models (Applicability).\n- The operator must consult Aermacchi Lockheed 60 SB No. 4 for the technical inspection procedure (Document reference).\n- Recording/certification requirements differ by regulatory status: aircraft under ANO 100.5.1 require an entry on the maintenance release; pilots may perform the inspection without certification; Licensed AMEs may both perform and certify it (Compliance provisions).\n\nSections cited: Applicability; Document: Aermacchi Lockheed 60 SB No. 4; Compliance (At each daily inspection; ANO 100.5.1 entry; pilot in command option; Licensed Aircraft Maintenance Engineer option)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-al-60-6-wing-lower-skin-inspection-aileron-interference","history":"/api/acts/ad-al-60-6-wing-lower-skin-inspection-aileron-interference/history","analysis":"/api/acts/ad-al-60-6-wing-lower-skin-inspection-aileron-interference/analysis","conflicts":"/api/acts/ad-al-60-6-wing-lower-skin-inspection-aileron-interference/conflicts","importantCases":"/api/acts/ad-al-60-6-wing-lower-skin-inspection-aileron-interference/important-cases","documents":"/api/acts/ad-al-60-6-wing-lower-skin-inspection-aileron-interference/documents"}}