/**
 * @fileoverview ourairports_find_navaids — navigation aids near a coordinate OR
 * serving a specific airport. Two-mode tool validated to exactly one mode:
 * coordinate mode runs a haversine scan over navaid positions; airport mode is a
 * lookup on the navaid→airport-ident join. Frequencies are stored in kHz for all
 * navaid types; MHz is added only where the type has a VHF or paired-VHF
 * frequency. Both modes report the match count before `limit` and disclose
 * truncation.
 * @module src/mcp-server/tools/definitions/find-navaids.tool
 */
import { z } from '@cyanheads/mcp-ts-core';
import { JsonRpcErrorCode } from '@cyanheads/mcp-ts-core/errors';
export declare const findNavaidsTool: import("@cyanheads/mcp-ts-core").ToolDefinition<z.ZodObject<{
    latitude: z.ZodOptional<z.ZodNumber>;
    longitude: z.ZodOptional<z.ZodNumber>;
    radius_km: z.ZodDefault<z.ZodNumber>;
    airport_code: z.ZodOptional<z.ZodString>;
    type: z.ZodOptional<z.ZodEnum<{
        DME: "DME";
        NDB: "NDB";
        "NDB-DME": "NDB-DME";
        TACAN: "TACAN";
        VOR: "VOR";
        "VOR-DME": "VOR-DME";
        VORTAC: "VORTAC";
    }>>;
    limit: z.ZodOptional<z.ZodNumber>;
}, z.core.$strip>, z.ZodObject<{
    mode: z.ZodEnum<{
        airport: "airport";
        coordinate: "coordinate";
    }>;
    airportIdent: z.ZodNullable<z.ZodString>;
    navaids: z.ZodArray<z.ZodObject<{
        id: z.ZodNumber;
        ident: z.ZodString;
        name: z.ZodString;
        type: z.ZodString;
        frequencyKhz: z.ZodNullable<z.ZodNumber>;
        frequencyMhz: z.ZodNullable<z.ZodNumber>;
        latitudeDeg: z.ZodNumber;
        longitudeDeg: z.ZodNumber;
        elevationFt: z.ZodNullable<z.ZodNumber>;
        isoCountry: z.ZodNullable<z.ZodString>;
        dmeChannel: z.ZodNullable<z.ZodString>;
        dmeFrequencyKhz: z.ZodNullable<z.ZodNumber>;
        usageType: z.ZodNullable<z.ZodString>;
        power: z.ZodNullable<z.ZodString>;
        magneticVariationDeg: z.ZodNullable<z.ZodNumber>;
        slavedVariationDeg: z.ZodNullable<z.ZodNumber>;
        associatedAirport: z.ZodNullable<z.ZodString>;
        distanceKm: z.ZodNullable<z.ZodNumber>;
        bearingDeg: z.ZodNullable<z.ZodNumber>;
    }, z.core.$strip>>;
}, z.core.$strip>, readonly [{
    readonly reason: "mode_conflict";
    readonly code: JsonRpcErrorCode.ValidationError;
    readonly when: "Coordinates are incomplete, both coordinate and airport modes were supplied, or neither mode was supplied.";
    readonly recovery: "Supply exactly one mode: either latitude and longitude (coordinate search) or airport_code (navaids serving an airport).";
}, {
    readonly reason: "unknown_code";
    readonly code: JsonRpcErrorCode.NotFound;
    readonly when: "airport_code did not match any airport in any identifier space.";
    readonly recovery: "Verify the code with ourairports_search_airports or ourairports_get_airport, then retry airport mode.";
}], {
    readonly totalCount: z.ZodNumber;
    readonly truncated: z.ZodOptional<z.ZodBoolean>;
    readonly shown: z.ZodOptional<z.ZodNumber>;
    readonly cap: z.ZodOptional<z.ZodNumber>;
    readonly notice: z.ZodOptional<z.ZodString>;
    readonly resolutionNote: z.ZodOptional<z.ZodString>;
}>;
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