{"id":"F2006B05647","name":"AD/PA-28/92 Amdt 1 - Landing Light Seal","slug":"ad-pa-28-92-amdt-1-landing-light-seal","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135335,"registerId":"commonwealth-F2006B05647-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-28/92 Amdt 1 - Landing Light Seal","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)  \nPiper PA-28 Series Aeroplanes\n\nAD/PA-28/92\n\nAmdt 1\n\n  \nLanding Light Seal 3/99\n\nApplicability: This Directive is applicable to the following aircraft models and serial numbers:\n\nModel Serial Numbers\n\nPA-28-140 28-20000 through 28-7725290 inclusive PA-28-150, PA-28-160 and PA-28-180 28-1 through 28-1760\n\nRequirement: Replace the landing light support and seal assembly in accordance with Piper Aircraft Corporation Service Bulletin 975 dated 2 November 1994.\n\nNote: FAA AD 96-10-01 R1 Amdt 39-10862 refers.\n\nCompliance: Unless previously accomplished; within 100 hours time in service from the effective date of this directive or at the next replacement of the landing light, whichever occurs first.\n\nThis Amendment becomes effective on 25 March 1999.\n\nBackground: This directive was originally issued to address four reports of the landing light retainer support seal breaking apart and entering the carburettor. The directive is intended to prevent the landing light retainer support seal from being ingested by the carburettor, which could result in rough engine operation or possible engine failure.\n\nThis amendment limits PA-28-150, 160 and 180 aircraft applicable to original and “B” models, which recognises that the landing light assembly of concern is only fitted to early model aircraft.\n\nThe original issue of this Airworthiness Directive became effective on 18 July 1996.","sortOrder":0}],"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":true,"description":"This amendment narrows the scope compared to the original 1996 directive. The original AD applied more broadly to PA-28-150, 160 and 180 aircraft, but Amendment 1 limits applicability to only 'original and B models' of those variants, recognising that the problematic landing light assembly was only fitted to early production aircraft. This is a scope reduction rather than expansion."},"complexity_factors":["Single, specific mechanical repair requirement with clear reference to manufacturer service bulletin","Limited applicability — only two specific serial number ranges across four model variants","Simple compliance timeframe: 100 hours time-in-service or next maintenance event","No nested exceptions, conditional logic, or extensive cross-referencing beyond one FAA AD note","Short document (approximately 200 words) with straightforward structure: applicability, requirement, compliance, background"],"plain_english_summary":"This CASA Airworthiness Directive mandates replacement of a defective landing‑light support and seal on certain Piper PA‑28 Cherokee aeroplanes (specific serial‑number ranges) because the seal can disintegrate and be sucked into the carburettor, risking engine malfunction or failure.  \n\nOwners/operators must carry out the replacement per Piper Service Bulletin 975 (Nov 1994) within 100 flight hours after 25 March 1999 or at the next landing‑light replacement. Four occurrences prompted the directive."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The amendment narrows the affected population: PA‑28‑150, PA‑28‑160 and PA‑28‑180 applicability is limited to original and “B” models because the landing light assembly in question is only fitted to early models. This reduces the number of aircraft required to comply compared to the original directive (Background)."},"complexity_factors":["Specific serial‑number applicability requires checking individual aircraft records (Applicability).","Mandated work must follow an external document: Piper Service Bulletin 975 dated 2 November 1994 (Requirement).","Compliance deadline is operationally measured: within 100 hours time in service or at next landing light replacement (Compliance).","Safety‑critical failure mode (seal ingestion into carburettor) raises inspection and replacement urgency (Background).","Cross‑reference to FAA AD 96‑10‑01 R1 adds an international regulatory linkage (Note).","Amendment alters model applicability (limits PA‑28‑150/160/180 to original and “B” models), so implementers must re‑assess fleet scope (Background)."],"plain_english_summary":"**What it does:** Requires owners/operators of specified Piper PA‑28‑140, PA‑28‑150, PA‑28‑160 and PA‑28‑180 aeroplanes (by serial number) to replace the landing light support and seal assembly per Piper Service Bulletin 975 (2 Nov 1994). **Who it affects and why it matters:** Affected aircraft must have the part replaced within 100 hours time‑in‑service or at the next landing light replacement to stop the seal breaking apart and being ingested into the carburettor, which can cause rough engine operation or engine failure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-28-92-amdt-1-landing-light-seal","history":"/api/acts/ad-pa-28-92-amdt-1-landing-light-seal/history","analysis":"/api/acts/ad-pa-28-92-amdt-1-landing-light-seal/analysis","conflicts":"/api/acts/ad-pa-28-92-amdt-1-landing-light-seal/conflicts","importantCases":"/api/acts/ad-pa-28-92-amdt-1-landing-light-seal/important-cases","documents":"/api/acts/ad-pa-28-92-amdt-1-landing-light-seal/documents"}}