Practice question

What glideslope indication is displayed to a pilot on final approach viewing a standard 4-box Precision Approach Path Indicator (PAPI) system when on the correct 3.0-degree glidepath?

  1. Two white lights on the left and two red lights on the right ('Two Red, Two White = On Glidepath').
  2. Four white lights ('Four White = Too Low').
  3. Four red lights ('Four Red = Too High').
  4. Alternating flashing green and amber lights.

Answer: A — Two white lights on the left and two red lights on the right ('Two Red, Two White = On Glidepath').

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