Definition
An airport surface sign with a white inscription on a red background, marking the location on a taxiway where an aircraft must hold short to avoid entering the protected approach or departure area of a runway. The sign typically displays the runway designation followed by a dash and the abbreviation 'APCH' (for example, '15-APCH'), indicating that crossing without clearance could place the aircraft inside the area used by other aircraft landing or departing on that runway.
Plain English
A red and white sign next to a taxiway that tells you to stop before going any further, because past this point you would be in the space that aircraft landing or taking off on a nearby runway need to keep clear.
Context Anchor
Pilots encounter this sign while taxiing on an airport surface, especially near a taxiway that passes close to the end of a runway or under the path used by landing aircraft.
Derivation
The phrase combines four ideas: 'runway approach area' (the airspace and ground area aircraft use when approaching to land or just after takeoff), 'holding position' (the spot where an aircraft must stop and wait), and 'sign' (the physical marker). Knowing that 'approach area' refers to the protected zone for arrivals and departures — not just landings — explains why this sign exists separately from the standard runway holding position sign.
Why Pilots Care
Prevents unauthorized entry into critical approach zones, reducing runway incursion risk and maintaining safe separation from landing traffic.
Grounding Statement
Picture a taxiway near the end of a runway: this sign marks the point where you wait so the runway’s landing and takeoff path stays clear.
Intuition Check
Do not read “approach area” as just any area near a runway. Here it means a protected runway area that must stay clear for aircraft landing or departing.
Example Sentence 1
Ground instructed us to taxi to the ramp, and we held short at the runway approach area holding position sign until we received clearance to cross.
Example Sentence 2
In low-visibility conditions the aircraft held short at the Runway Approach Area Holding Position Sign until given further instructions.