{"id":"F2006B09845","name":"AD/F50/2 - Aircraft Flight Manual and Minimum Equipment List Amendment","slug":"ad-f50-2-aircraft-flight-manual-and-minimum-equipment-list-amendment","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":54898,"registerId":"commonwealth-F2006B09845-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/F50/2 - Aircraft Flight Manual and Minimum Equipment List Amendment","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)  \nFokker F50 (F27 Mk 50) Series Aeroplanes\n\nAD/F50/2 Aircraft Flight Manual and Minimum Equipment List Amendment\n\n  \n9/88\n\nTX\n\nApplicability: F27 Mk 050 aircraft serial numbers 20103 to 20108 inclusive, and 20110 to 20120 inclusive.\n\nRequirement: (1) Amend Aircraft Flight Manual to incorporate RLD approved amendment AFM/50-081, dated May 09/88 concerning 2.09.01, 5.00.00, 5.02.01, 5.05.01.\n\n    (2) Aircraft cannot be dispatched with the TAT indication inoperative unless the engine anti-icing system and the ignition system is operative and switched on in visible moisture.\n\n    (3) Amend Master Minimum Equipment List AIA 34 page 2, version 01, issue 003.\n\nNote 1: Netherlands Airworthiness Directive BLA nr. 88.37 refers.\n\nNote 2: Formal Flight Manual amendment will be issued by applicable Regional Airworthiness Office.\n\nCompliance: (1) Prior to 25 June 1988.\n\n    (2) Effective 25 June 1988.\n\n    (3) Prior to 9 July 1988.\n\nBackground: This Directive has been issued to reflect the requirements of Netherlands Airworthiness Directive BLA nr. 88.37. The Directive requires amendment to the Aircraft Flight Manual and the Master Minimum Equipment List. The amendments are required to prevent power loss in heavy rain and icing conditions.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete airworthiness directive with a narrow, specific purpose: updating flight manuals and equipment lists for a particular aircraft type to address a specific safety risk (power loss in icing/heavy rain). The scope remains tightly focused on its original safety intent with no evidence of scope creep."},"complexity_factors":["Very short document (approximately 200 words)","Only 3 operative requirements with clear compliance dates","Minimal defined terms (only standard aviation acronyms: TAT, AFM, RLD)","No nested conditional logic or cross-references to other legislation","Single background reference to a foreign (Dutch) airworthiness directive","Straightforward applicability section using specific aircraft serial numbers"],"plain_english_summary":"This CASA safety directive for specific Fokker F50s (S/N 20103–20108, 20110–20120) requires Aircraft Flight Manual and Minimum Equipment List updates and adds a restriction: if the TAT indicator is inoperative, the engines’ anti‑ice and ignition systems must be serviceable and ON when flying in visible moisture. It aims to prevent engine power loss or flame‑out in heavy rain/icing and implements the Dutch AD (BLA nr. 88.37)."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD aligns Australian requirements with Netherlands Airworthiness Directive BLA nr. 88.37 and targets the same operational risk (power loss in heavy rain and icing). It does not expand the set of affected aircraft beyond the listed serial numbers; it prescribes administrative and operational changes consistent with the stated intent."},"complexity_factors":["Narrow applicability: specific serial numbers listed (Applicability).","Multiple, discrete compliance actions with different deadlines (Requirement (1)–(3); Compliance).","Operational conditionality affecting dispatch decisions: TAT inoperative permitted only if engine anti‑icing and ignition are operative and switched on in visible moisture (Requirement (2)).","Administrative burden to amend Aircraft Flight Manual and Master Minimum Equipment List and to incorporate an RLD‑approved AFM amendment (Requirement (1), (3); Note 2).","Cross‑reference to a foreign airworthiness directive (Netherlands BLA nr. 88.37) creates dependence on external certification rationale (Note 1; Background).","Formal issuance and oversight involve the Regional Airworthiness Office, adding an implementation step beyond operator updates (Note 2)."],"plain_english_summary":"Changes flight manuals and minimum-equipment lists for certain Fokker F27 Mk 50 aircraft. It requires operators to insert AFM amendment AFM/50-081, amend the Master Minimum Equipment List, and forbid dispatch with the total air temperature (TAT) indicator inoperative unless engine anti‑icing and ignition systems are on in visible moisture. Deadlines are set in the AD. The stated purpose is to reduce power‑loss risk in heavy rain and icing; compliance imposes procedural and equipment checks on operators and may require administrative updates to manuals."}},"importantCases":[],"_links":{"self":"/api/acts/ad-f50-2-aircraft-flight-manual-and-minimum-equipment-list-amendment","history":"/api/acts/ad-f50-2-aircraft-flight-manual-and-minimum-equipment-list-amendment/history","analysis":"/api/acts/ad-f50-2-aircraft-flight-manual-and-minimum-equipment-list-amendment/analysis","conflicts":"/api/acts/ad-f50-2-aircraft-flight-manual-and-minimum-equipment-list-amendment/conflicts","importantCases":"/api/acts/ad-f50-2-aircraft-flight-manual-and-minimum-equipment-list-amendment/important-cases","documents":"/api/acts/ad-f50-2-aircraft-flight-manual-and-minimum-equipment-list-amendment/documents"}}