In air traffic services terminology, identify the correct statements about FIR (Flight Information Region), FIC (Flight Information Centre), and the nominal radii of control area and control zone.
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AOnly FIR and FIC definitions are correct; the given radii are not.
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BOnly the stated radii are correct; FIR and FIC definitions are not.
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COnly FIR definition is correct.
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DAll the statements are correct.
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EOnly FIC definition and control zone radius are correct.
Answer
Correct Answer: All the statements are correct.
Explanation
Introduction / Context:Air traffic services (ATS) use standard blocks of airspace and service units to organize and provide en-route information and control. This question checks familiarity with four basic items: FIR, FIC, and indicative dimensions of a control area (CTA) and a control zone (CTR) often cited in exam literature.
Given Data / Assumptions:
- FIR stands for Flight Information Region—large en-route airspace blocks providing flight information and alerting services.
- FIC stands for Flight Information Centre—an ATS unit providing flight information services, commonly responsible for FIR coverage.
- Nominal control area radius given as 160 km and control zone radius as 40 km reflect typical exam-style, rounded values (local/state AIP may vary).
Concept / Approach:Different ATS terms address different layers: FIR/FIC are broader en-route constructs; CTA/CTR provide controlled airspace with indicative lateral/vertical limits around airports and along routes. Exams often use standard numbers for quick recall, even though operational values differ by state and aerodrome.
Step-by-Step Solution:
Confirm acronyms: FIR = Flight Information Region; FIC = Flight Information Centre. Both are standard ATS expansions.Relate radii: A CTA radius of about 160 km and a CTR radius of about 40 km are conventional rounded figures in many question banks.Therefore, each of the four statements holds within the intended exam context.Verification / Alternative check:
Cross-reference typical civil-aviation exam guides that present FIR/FIC and CTA/CTR dimensions as round-number memory aids.Why Other Options Are Wrong:
a/b/c/e: These reject one or more items that are standard in exam usage; the set expects acceptance of all four statements together.Common Pitfalls:
Arguing country-specific variations in controlled airspace dimensions; exam keys typically accept the rounded figures given.Final Answer:
All the statements are correct.