
Stationary hazards are marked by a yellow three-sided solid mounted on a pole with a round base. These hazards are found on airfields and are used to indicate that taxiing on the grass is not permitted. Other markers of stationary hazards include yellow flags, a white triangle on a pole, and a white canvas V.
| Characteristics | Values |
|---|---|
| Shape | Three-sided solid |
| Colour | Yellow |
| Mounting | Mounted on a pole with a round base |
| Marker | White canvas V with a red band |
| Flag | Yellow |
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What You'll Learn

Yellow flags
A yellow flag signifies a hazardous stationary object, bad ground, a helicopter landing area, or a closed taxiway. These hazards are also indicated by a yellow square.
The use of yellow flags and other visual markers is essential for ensuring safety at airfields and preventing accidents. By clearly indicating hazards and restricted areas, pilots can navigate their aircraft with precision and avoid potential dangers.
In addition to visual markers, airfields employ various communication aids to further enhance safety. These aids enable pilots to receive crucial information regardless of weather conditions, helping them make informed decisions and minimize risks during takeoff and landing.
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Three-sided solid on a pole
A three-sided solid on a pole with a round base is used to identify a stationary hazard. This type of hazard marker is used in airfields to indicate an obstruction. The pole is typically yellow and is used to signify hazards that are fixed in one place. These hazards do not move and are not affected by the movement of other objects.
Stationary hazards are distinct from mobile hazards, which can move or be moved. They are also different from bad ground hazards, which refer to areas where taxiing is not permitted. Good ground, on the other hand, indicates areas that are suitable for taxiing.
It is important to be able to identify hazards to prevent accidents and injuries. In the context of airfields, hazards can pose a significant risk to aircraft and ground personnel. A three-sided solid on a pole is a clear and visible marker that helps to identify and avoid potential dangers.
While a three-sided solid on a pole specifically indicates a stationary hazard, there are other types of hazard markers used in airfields. For example, yellow flags on light stakes can indicate bad ground, while a white canvas marker with a red band can also signify an area to avoid. Additionally, a white triangle on a pole indicates a stationary hazard, similar to the three-sided solid marker.
Identifying and understanding these hazard markers is crucial for maintaining safety in airfield operations. By recognizing and interpreting these markers, aircraft crews and ground personnel can navigate around potential dangers and mitigate risks effectively.
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White triangle on a pole
A white triangle on a pole is used to indicate a stationary hazard. This is distinct from yellow flags, which indicate mobile hazards.
Stationary hazards on airfields are marked with a yellow, three-sided solid mounted on a pole with a round base. At airfields where taxiing on the grass is permitted, bad ground is identified by one of three methods: a white canvas marker with a red band, a yellow-and-black striped solid, or yellow flags on light stakes.
A white triangle on a pole may also refer to an LDPA (as identified by a Reddit user), which covers a frequency range of approximately 290MHz to 2000MHz. This frequency range covers VHF/UHF radio, 900MHz Multiple Address Systems (MAS) used for SCADA communications to line switches and remote re-closers, and cellular. The presence of an LDPA and a GPS antenna on a pole indicates an Automated Metering Infrastructure (AMI) collector or router device.
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White canvas V
A white canvas V is used to indicate a stationary object that constitutes a hazard. It is one of several markers used to indicate hazards on airfields.
A white canvas V marker with a red band signifies a stationary hazard. Other markers used to indicate hazards include yellow flags or squares, and a three-sided solid mounted on a pole with a round base. These markers are used to indicate hazards on airfields, particularly when taxiing on the grass.
The white canvas V marker is an important visual indicator to alert aircraft crew and pilots of potential hazards on the airfield. It is essential for maintaining safety and preventing accidents during aircraft operations.
It is crucial for aircraft crew and pilots to be able to identify and recognize these markers to ensure safe aircraft operations. Proper training and familiarity with these markers are vital to navigate and operate within airfield environments effectively and avoid potential hazards.
The use of distinct markers, such as the white canvas V, is a standardized practice to enhance safety and facilitate efficient communication regarding potential hazards on airfields.
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Yellow and black striped solid
Hazards in the workplace can lead to injuries, illnesses, accidents, downtime, and property damage. They can be biological, ergonomic, physical, psychological, safety hazards, or chemical hazards, to name a few. A hazard is any source of potential harm, damage, or adverse health effects on a person or thing within the workplace.
Yellow and black striped markers are used to indicate hazards on airfields. These markers are used to identify areas of bad ground. Stationary hazards on airfields are marked with a yellow, three-sided solid mounted on a pole with a round base.
Stationary hazards are a type of hazard that does not move. These hazards can be identified by yellow flags, a three-sided solid mounted on a pole with a round base, or a white triangle on a pole. These markers are used to indicate that the ground is unserviceable for takeoffs or that there is an obstruction.
To identify hazards in the workplace, it is important to collect and review information about the hazards present or likely to be present. This can include conducting workplace inspections, investigating incidents and near misses, and reviewing medical records. By identifying hazards and their root causes, corrective actions can be prioritized to prevent future incidents and ensure the safety of workers.
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Frequently asked questions
A hazard is any source of potential harm, damage, or adverse health effects on someone or something within a workplace. Hazards can also present the potential for harm to the environment.
Some examples of stationary objects that constitute hazards include:
- Yellow flags
- A three-sided solid mounted on a pole with a round base
- A white triangle on a pole
- A white canvas with a red band
- A yellow and black striped solid
Hazard identification is a process of finding and evaluating hazards that exist or may arise in the workplace. It involves collecting and reviewing information about hazards, conducting workplace inspections, investigating incidents and near misses, and grouping similar incidents to identify trends.
Identifying hazards helps to protect workers from harm, improve their well-being and productivity, comply with legal obligations, reduce costs associated with accidents, and enhance the reputation of the organization.
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