{"id":"F2006B05650","name":"AD/PA-28/95 Amdt 1 - Engine Air Filter","slug":"ad-pa-28-95-amdt-1-engine-air-filter","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135341,"registerId":"commonwealth-F2006B05650-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-28/95 Amdt 1 - Engine Air Filter","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)  \n![](image.002.png)  \nPiper PA-28 Series Aeroplanes\n\nAIRWORTHINESS DIRECTIVE\n\n![](image.002.png)\n\n![](image.002.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD)AD/PA-28/95 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\nAD/PA-28/95\n\nAmdt 1\n\n  \nEngine Air Filter 8/2000\n\nApplicability: Model PA-28-140, \\-150, \\-160, \\-180, \\-181, \\-235, \\-201T, \\-28R-201T, \\-28S-160 and\n\n28S-180 aircraft , all serial numbers, and Model PA-28-151 and PA-28-161 aircraft incorporating Supplemental Type Certificate (STC) SA2946SO, equipped with a Puralator (FACET) air filter (P/N) 638873, model CA161PL or Piper P/N 460-632 (PS60007-2).\n\nNote 1: Filters of concern can be identified by accessing the filter and locating the brand name and part number. Filters of concern are branded “FACET 638873” in 0.250”(1/4”) high white characters with no date code.\n\nRequirement: 1: Inspect applicable air filters in accordance with Piper Service Bulletin (No.) 1022 and/or Purolator Service Bulletin No. SB090298.01.\n\n2: Replace applicable air filters with an approved air filter.\n\nReplacing the air filter with an approved filter other than a Puralator (FACET) P/N 638873 filter constitutes a terminating action for the requirements of this Directive.\n\nNote 2: FAA Airworthiness Directive 99-05-09 Amdt 39-11057 and FAA Airworthiness Directive 99-26-05 Amdt 39-11464 refer.\n\nCompliance: 1: Unless previously accomplished; at next inspection of the engine air inlet filter element or within 25 hours time in service from the effective date of this directive, whichever occurs first. Thereafter, re inspect at intervals not to exceed 25 hours time in service.\n\n2: Installed filters: At next periodic inspection or within 12 months time in service from the effect date of this Directive, whichever occurs first.\n\n3. Spare filters: Prior to installation in a engine.\n\nThis Amendment becomes effective on 10 August 2000.\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\nBackground: This directive was issued to address reports of cracking and break up of certain air filter elements. The defects resulted from evidence of manufacturing errors in filters produced during the period January 1997 though September 1998.\n\nThis amendment adds the PA-28S-160 and PA-28S-180 models and PA-28-151/161 aircraft modified in accordance with STC SA2946SO to the aircraft applicable and adds a terminating action.\n\nThe original issue of this Airworthiness Directive became effective on 9 September 1999.\n\n![](image.003.png)  \n\nEugene Paul Holzapfel\n\nDelegate of the Civil Aviation Safety Authority 30 June 2000\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 12 July 2000.","sortOrder":0}],"analysis":{"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"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":true,"description":"This is Amendment 1 to the original AD/PA-28/95. The scope expanded from the original September 1999 directive to include additional aircraft models (PA-28S-160 and PA-28S-180) and PA-28-151/161 aircraft with STC SA2946SO modification. It also added a terminating action option that didn't exist in the original, allowing operators to permanently satisfy the directive by switching to a different filter brand."},"complexity_factors":["Multiple aircraft models listed with specific serial number ranges and modification status (STC SA2946SO)","Cross-references to two manufacturer service bulletins (Piper SB 1022 and Purolator SB090298.01)","Three separate compliance deadlines depending on filter status (installed vs spare) and inspection timing","Reference to two FAA Airworthiness Directives (99-05-09 and 99-26-05) for additional context","Specific part number identification requirements including visual inspection criteria (0.250\" white characters, no date code)","Conditional terminating action clause (replacement with non-Puralator filter ends the obligation)"],"plain_english_summary":"CASA requires owners/operators of specified Piper PA‑28 Cherokees that use Puralator (FACET) filter P/N 638873 (Piper P/N 460‑632) to inspect and replace these filters because units made Jan 1997–Sep 1998 can crack and disintegrate, risking engine failure. Inspect within 25 flight hours and every 25 hours until replaced; replace with an approved alternative within 12 months (and check spares before fitting). This prevents debris/airflow problems that could cause in‑flight engine loss."},"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":true,"description":"The amendment expanded the applicability by adding PA-28S-160 and PA-28S-180 models and PA-28-151/161 aircraft modified under STC SA2946SO, and it explicitly added a terminating action (replace with an approved non‑Puralator filter) to end AD obligations. The Background states these additions and the amendment effective date (10 August 2000) relative to the original AD effective 9 September 1999."},"complexity_factors":["Multiple affected models and serial-number universality: covers many PA‑28 variants (PA‑28-140/150/160/180/181/235/201T/28R-201T/28S-160/28S-180 and certain PA‑28-151/161 with STC SA2946SO) increasing identification and tracking effort (Applicability).","Specific part identification method: requires accessing the filter to read brand/part marking (“FACET 638873” in 0.250” white characters, no date code) which requires hands-on inspection (Note 1, Requirement).","Dual-source service bulletin references: inspections must follow Piper Service Bulletin No. 1022 and/or Purolator Service Bulletin No. SB090298.01, creating dependence on two technical documents (Requirement 1).","Staggered and frequent compliance timings: initial inspection within 25 hours TIS or at next inspection, then recurring at ≤25 hours TIS; installed filters must be replaced at next periodic inspection or within 12 months; spare filters must be checked before installation (Compliance).","Terminating action available: replacing with an approved non‑Puralator filter ends AD obligations, affecting operators’ choice of replacement part and long‑term compliance costs (Requirement 2).","Cross-reference to FAA ADs and prior AD history: cites FAA ADs and revokes a prior AD, requiring operators to track related foreign directives and the AD’s amendment history (Notes and Background).","Regulatory enforceability and timing: effective date and Gazette notification establish legal deadlines and administrative records (Effective/Background)."],"plain_english_summary":"This amendment requires owners/operators of specified Piper PA‑28 aircraft fitted with Purolator (FACET) P/N 638873 engine air filters to inspect filter elements per Piper and Purolator service bulletins and to replace defective filters with an approved alternative; replacement with a non‑Puralator approved filter terminates the AD obligations. It sets inspection intervals for in‑service and spare filters and places the compliance burden and replacement costs on operators."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-28-95-amdt-1-engine-air-filter","history":"/api/acts/ad-pa-28-95-amdt-1-engine-air-filter/history","analysis":"/api/acts/ad-pa-28-95-amdt-1-engine-air-filter/analysis","conflicts":"/api/acts/ad-pa-28-95-amdt-1-engine-air-filter/conflicts","importantCases":"/api/acts/ad-pa-28-95-amdt-1-engine-air-filter/important-cases","documents":"/api/acts/ad-pa-28-95-amdt-1-engine-air-filter/documents"}}