{"id":"F2006B06172","name":"AD/PFP/14 Amdt 2 - Hub Inspection and Rework","slug":"ad-pfp-14-amdt-2-hub-inspection-and-rework","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":47012,"registerId":"commonwealth-F2006B06172-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PFP/14 Amdt 2 - Hub Inspection and Rework","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 107 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nPropellers \\- Fixed Pitch\n\nAD/PFP/14\n\nAmdt 2\n\n  \nHub Inspection and Rework 8/89\n\nApplicability: McCauley model 1A103/TCM/6958 propeller serial number 770001 through 777390 and BC-001 up to but not including JA001 originally fitted to Cessna 152, A152, Reims F152 and FA152.\n\nRequirement: Action in accordance with McCauley SB 169B.\n\nNote: Propellers previously inspected in accordance with McCauley SB 169A (Amdt 1) require additional inspection as detailed in paragraphs 4 and 5 of McCauley SB 169B.\n\nCompliance: For propellers with 1200 hours or more total time in service or if service history unknown inspect and rework propeller at next inspection for issue of a Maintenance Release after 30 June 1989.\n\nBackground: The manufacturer has received reports of two in-flight blade failures of affected propellers. Blade separation occurred in the area where the blade blended into the hub. Due to further blade failures the manufacturer has expanded the inspection to include the hub bolt holes.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is Amendment 2 to an existing Airworthiness Directive. The scope has remained consistent with the original directive's purpose (addressing propeller blade/hub failures). The amendment expands the inspection requirements to include hub bolt holes based on new failure data, which represents a refinement rather than scope creep. The applicability (affected aircraft and propellers) has not expanded beyond the original cohort."},"complexity_factors":["Single, specific applicability clause limited to defined propeller serial number ranges","Single compliance requirement referencing external technical document (McCauley SB 169B)","One conditional note regarding prior inspections under previous amendment","No defined terms section, no cross-references to other legislation, no nested exceptions","Total length: approximately 150 words","Clear, unambiguous compliance deadline tied to maintenance schedule"],"plain_english_summary":"This is an **Airworthiness Directive** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It requires owners and operators of specific Cessna aircraft to inspect and repair their propellers due to a serious safety risk.\n\n**What it does:**\n- Orders inspection and repair of McCauley fixed-pitch propellers (specific serial numbers) originally fitted to Cessna 152 series aircraft\n- Requires compliance with the manufacturer's Service Bulletin 169B (a technical instruction document)\n- Mandates additional checks for propellers previously inspected under an earlier version of the directive\n\n**Who it affects:**\n- Owners and operators of Cessna 152, A152, Reims F152 and FA152 aircraft with affected McCauley propellers\n- Specifically propellers with serial numbers 770001 through 777390, and BC-001 up to (but not including) JA001\n\n**Why it matters:**\n- **Safety critical:** Two in-flight blade failures have occurred where blades separated from the hub during flight\n- The manufacturer expanded the inspection scope to include hub bolt holes after further failures were reported\n- Non-compliance could result in catastrophic engine failure and loss of aircraft control\n\n**When to act:**\n- For propellers with 1,200+ flight hours or unknown service history: inspect and repair at the next scheduled maintenance check after 30 June 1989"},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"Scope was expanded from the earlier instruction (SB 169A) to require additional inspections, specifically including the hub bolt holes, in response to further in‑flight blade failures; the AD now mandates rework per McCauley SB 169B and refers to additional inspection paragraphs (4 and 5)."},"complexity_factors":["Narrow, technical applicability by model and serial number range","Mandatory compliance tied to a manufacturer Service Bulletin (SB 169B) rather than full text in the instrument","Conditional timing: applies at next inspection for MR after a specified date and at/above a service-hour threshold or when history is unknown","Amendment history: references prior inspection (SB 169A) and adds additional inspection requirements (paragraphs 4 and 5 of SB 169B)","Operational impact concentrated on owners/operators and maintenance organisations who must schedule, perform and fund rework","Safety-critical subject matter that may require specialist inspection/rework skills and parts"],"plain_english_summary":"**What it does:** Requires owners/operators of specific McCauley propellers (model 1A103/TCM/6958, serials 770001–777390, and BC-001 up to JA001) originally fitted to Cessna 152 variants to have the hub inspected and reworked following McCauley Service Bulletin 169B. Applies to propellers with 1,200+ hours or unknown history and must be done at the next inspection for issue of a Maintenance Release after 30 June 1989. Owners/operators must arrange and fund the work. The change responds to in‑flight blade separations and expands inspection to hub bolt holes."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pfp-14-amdt-2-hub-inspection-and-rework","history":"/api/acts/ad-pfp-14-amdt-2-hub-inspection-and-rework/history","analysis":"/api/acts/ad-pfp-14-amdt-2-hub-inspection-and-rework/analysis","conflicts":"/api/acts/ad-pfp-14-amdt-2-hub-inspection-and-rework/conflicts","importantCases":"/api/acts/ad-pfp-14-amdt-2-hub-inspection-and-rework/important-cases","documents":"/api/acts/ad-pfp-14-amdt-2-hub-inspection-and-rework/documents"}}