Operating and Maintenance Manual
PAPI 400
5
1.
General
The PAPI units to be provided shall comply with ICAO photometric performances required
for a Precision Approach Path Indicator system except when otherwise stated herein.
PAPI system or APAPI system give pilots visual information for safe approach procedure of
aircraft. PAPI system is composed of 4 PAPI units and APAPI comprises of 2 PAPI units.
The system is placed on the left of the runway aimed outward into the approach zone on a
line parallel to the runway. Each beam of the unit has white color on upper side, red color on
lower side and transition sector between red and white color. The transition sector is very
accurate because that does not exceed 3 minutes of arc over the full beam width.
2. Compliance
ICAO : Annex 14. PARA 5.3.5
FAA : L-880 (AC 150/5345-28)
3. Environmental requirements
Altitude : below 2500m
Environmental Temperature : -15 ~ +55
℃
Relative Humidity : 95%
Weatherproof and sea corrosion-proof
4. Detailed Specifications
4.1 Electrical characteristics
The Consuming wattages of lights are as follows.
Type of lights
Lamp spec.
Lamp Q’ty
Consuming wattage
PAPI
6.6A, 200W
2EA
400W
