PAPI
E764313
abbreviated precision approach path indicator
airfield visual aid
visual glide slope indicator system
PAPI is a visual glide slope indicator system used at airports to help pilots maintain the correct approach angle during landing.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| APAPI | 0 |
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
abbreviated precision approach path indicator
ⓘ
airfield visual aid ⓘ visual glide slope indicator system ⓘ |
| abbreviationOf | Precision Approach Path Indicator NERFINISHED ⓘ |
| category |
airfield lighting system
ⓘ
navigation aid ⓘ |
| consistsOf | four light units arranged in a horizontal row ⓘ |
| fullName | Precision Approach Path Indicator NERFINISHED ⓘ |
| glidePathAngle | typically around 3 degrees ⓘ |
| hasAdvantage | provides more precise glide path information than VASI ⓘ |
| hasComponent | light unit ⓘ |
| hasFewerLightUnitsThan | PAPI ⓘ |
| hasLightColor |
red
ⓘ
white ⓘ |
| hasNumberOfLightUnits | 4 ⓘ |
| hasStandard | ICAO Annex 14 NERFINISHED ⓘ |
| hasType | APAPI ⓘ |
| indicates |
on-slope condition with two white and two red lights
ⓘ
significantly high condition with four white lights ⓘ significantly low condition with four red lights ⓘ too high condition with more white than red lights ⓘ too low condition with more red than white lights ⓘ |
| locatedAt | side of the runway ⓘ |
| operatedBy | airport operator ⓘ |
| operationalStatus | can be turned on or off by air traffic control ⓘ |
| optimizedFor |
daytime visibility
ⓘ
nighttime visibility ⓘ |
| provides | visual approach slope information ⓘ |
| regulatedBy | International Civil Aviation Organization NERFINISHED ⓘ |
| replaced | VASI at many airports ⓘ |
| requires |
electrical power supply
ⓘ
proper calibration of light unit angles ⓘ |
| safetyRole |
helping prevent undershoot and overshoot landings
ⓘ
reducing risk of controlled flight into terrain on approach ⓘ |
| similarTo | VASI NERFINISHED ⓘ |
| supports |
non-precision approaches
ⓘ
visual flight rules operations ⓘ |
| typicallyLocated |
about 300 meters beyond the runway threshold
GENERATED
ⓘ
left side of the runway GENERATED ⓘ |
| usedAt |
aerodromes
ⓘ
airports ⓘ |
| usedBy |
commercial pilots
ⓘ
general aviation pilots ⓘ military pilots ⓘ |
| usedFor |
helping pilots maintain correct approach angle during landing
ⓘ
indicating whether an aircraft is above or below the ideal glide path ⓘ providing visual glide path guidance to pilots ⓘ |
| usedIn | aircraft landing phase ⓘ |
| visibleTo | approaching aircraft ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.