diff --git a/src/features/popular-requests/components/PopularRequestsPanel.test.tsx b/src/features/popular-requests/components/PopularRequestsPanel.test.tsx
new file mode 100644
index 00000000..829663ab
--- /dev/null
+++ b/src/features/popular-requests/components/PopularRequestsPanel.test.tsx
@@ -0,0 +1,287 @@
+import { describe, it, expect, vi, beforeEach } from "vitest";
+import { render, screen, waitFor } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+import { PopularRequestsPanel } from "./PopularRequestsPanel";
+import type { PopularRequest } from "../types";
+
+// ---------------------------------------------------------------------------
+// Mocks
+// ---------------------------------------------------------------------------
+
+// Mock the usePopularRequests hook
+const mockUsePopularRequests = vi.fn<
+  () => { requests: PopularRequest[]; loading: boolean; error: Error | null }
+>();
+
+vi.mock("../hooks/usePopularRequests.js", () => ({
+  usePopularRequests: () => mockUsePopularRequests(),
+}));
+
+// Mock i18n
+vi.mock("@/i18n/provider.js", () => ({
+  useTranslation: () => ({
+    t: (key: string) => key,
+    i18n: { language: "en" },
+  }),
+}));
+
+// Mock useCityName
+vi.mock("@/shared/hooks/useDictionaries.js", () => ({
+  useCityName: (code: string) => code,
+}));
+
+// ---------------------------------------------------------------------------
+// Test data
+// ---------------------------------------------------------------------------
+
+const mockRequests: PopularRequest[] = [
+  {
+    mode: "FlightNumber",
+    carrier: "SU",
+    flightNumber: "9027",
+    type: "Onlineboard",
+  },
+  {
+    mode: "FlightNumber",
+    carrier: "SU",
+    flightNumber: "9006",
+    type: "Onlineboard",
+  },
+  {
+    mode: "Route",
+    departure: "KUF",
+    arrival: "ABA",
+    type: "Onlineboard",
+  },
+  {
+    mode: "Route",
+    departure: "RTW",
+    arrival: "ABA",
+    type: "Onlineboard",
+  },
+];
+
+// ---------------------------------------------------------------------------
+// Tests
+// ---------------------------------------------------------------------------
+
+describe("PopularRequestsPanel", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("renders nothing while loading", () => {
+    mockUsePopularRequests.mockReturnValue({
+      requests: [],
+      loading: true,
+      error: null,
+    });
+
+    const { container } = render(
+      <PopularRequestsPanel onRequestClick={vi.fn()} />,
+    );
+
+    expect(container.innerHTML).toBe("");
+  });
+
+  it("renders nothing on error (graceful degradation)", () => {
+    mockUsePopularRequests.mockReturnValue({
+      requests: [],
+      loading: false,
+      error: new Error("API failure"),
+    });
+
+    const { container } = render(
+      <PopularRequestsPanel onRequestClick={vi.fn()} />,
+    );
+
+    expect(container.innerHTML).toBe("");
+  });
+
+  it("renders nothing when requests array is empty", () => {
+    mockUsePopularRequests.mockReturnValue({
+      requests: [],
+      loading: false,
+      error: null,
+    });
+
+    const { container } = render(
+      <PopularRequestsPanel onRequestClick={vi.fn()} />,
+    );
+
+    expect(container.innerHTML).toBe("");
+  });
+
+  it("renders the title and up to 4 request items", () => {
+    mockUsePopularRequests.mockReturnValue({
+      requests: mockRequests,
+      loading: false,
+      error: null,
+    });
+
+    render(<PopularRequestsPanel onRequestClick={vi.fn()} />);
+
+    expect(screen.getByText("BOARD.POPULAR-CHAPTERS")).toBeInTheDocument();
+    // Should render 4 items
+    const items = screen.getAllByRole("button");
+    expect(items).toHaveLength(4);
+  });
+
+  it("calls onRequestClick when a flight number item is clicked", async () => {
+    mockUsePopularRequests.mockReturnValue({
+      requests: [mockRequests[0]!],
+      loading: false,
+      error: null,
+    });
+
+    const onRequestClick = vi.fn();
+    render(<PopularRequestsPanel onRequestClick={onRequestClick} />);
+
+    const button = screen.getByRole("button");
+    await userEvent.click(button);
+
+    expect(onRequestClick).toHaveBeenCalledWith(mockRequests[0]);
+  });
+
+  it("renders flight number with carrier and number", () => {
+    mockUsePopularRequests.mockReturnValue({
+      requests: [mockRequests[0]!],
+      loading: false,
+      error: null,
+    });
+
+    render(<PopularRequestsPanel onRequestClick={vi.fn()} />);
+
+    // SU\u00a09027 (non-breaking space)
+    expect(screen.getByText("SU\u00a09027")).toBeInTheDocument();
+  });
+
+  it("renders route request with departure and arrival", () => {
+    mockUsePopularRequests.mockReturnValue({
+      requests: [mockRequests[2]!],
+      loading: false,
+      error: null,
+    });
+
+    render(<PopularRequestsPanel onRequestClick={vi.fn()} />);
+
+    expect(screen.getByText("KUF - ABA")).toBeInTheDocument();
+  });
+
+  it("limits display to 4 items even with more data", () => {
+    const manyRequests: PopularRequest[] = [
+      ...mockRequests,
+      {
+        mode: "Arrival",
+        arrival: "SVO",
+        type: "Onlineboard",
+      },
+    ];
+
+    mockUsePopularRequests.mockReturnValue({
+      requests: manyRequests,
+      loading: false,
+      error: null,
+    });
+
+    render(<PopularRequestsPanel onRequestClick={vi.fn()} />);
+
+    const items = screen.getAllByRole("button");
+    expect(items).toHaveLength(4);
+  });
+
+  it("renders arrival request mode", () => {
+    mockUsePopularRequests.mockReturnValue({
+      requests: [
+        {
+          mode: "Arrival",
+          arrival: "SVO",
+          type: "Onlineboard",
+        },
+      ],
+      loading: false,
+      error: null,
+    });
+
+    render(<PopularRequestsPanel onRequestClick={vi.fn()} />);
+
+    expect(screen.getByText("BOARD.ARRIVAL")).toBeInTheDocument();
+    expect(screen.getByText("SVO")).toBeInTheDocument();
+  });
+
+  it("renders departure request mode", () => {
+    mockUsePopularRequests.mockReturnValue({
+      requests: [
+        {
+          mode: "Departure",
+          departure: "DME",
+          type: "Onlineboard",
+        },
+      ],
+      loading: false,
+      error: null,
+    });
+
+    render(<PopularRequestsPanel onRequestClick={vi.fn()} />);
+
+    expect(screen.getByText("BOARD.DEPARTURE")).toBeInTheDocument();
+    expect(screen.getByText("DME")).toBeInTheDocument();
+  });
+
+  it("renders schedule route with correct label", () => {
+    mockUsePopularRequests.mockReturnValue({
+      requests: [
+        {
+          mode: "Route",
+          departure: "SVO",
+          arrival: "LED",
+          type: "Schedule",
+        },
+      ],
+      loading: false,
+      error: null,
+    });
+
+    render(<PopularRequestsPanel onRequestClick={vi.fn()} />);
+
+    expect(screen.getByText("SCHEDULE.SCHEDULE-OUTBOUND")).toBeInTheDocument();
+  });
+
+  it("renders RouteWithBack with full-route label", () => {
+    mockUsePopularRequests.mockReturnValue({
+      requests: [
+        {
+          mode: "RouteWithBack",
+          departure: "SVO",
+          arrival: "JFK",
+          type: "Schedule",
+        },
+      ],
+      loading: false,
+      error: null,
+    });
+
+    render(<PopularRequestsPanel onRequestClick={vi.fn()} />);
+
+    expect(
+      screen.getByText("SCHEDULE.SCHEDULE-FULL-ROUTE"),
+    ).toBeInTheDocument();
+  });
+
+  it("supports keyboard activation (Enter key)", async () => {
+    mockUsePopularRequests.mockReturnValue({
+      requests: [mockRequests[0]!],
+      loading: false,
+      error: null,
+    });
+
+    const onRequestClick = vi.fn();
+    render(<PopularRequestsPanel onRequestClick={onRequestClick} />);
+
+    const button = screen.getByRole("button");
+    button.focus();
+    await userEvent.keyboard("{Enter}");
+
+    expect(onRequestClick).toHaveBeenCalledWith(mockRequests[0]);
+  });
+});