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 MIL-HDBK-1023/4
Table A-6
Runway and Taxiway Lighting Systems
Tolerance / limit
1/
Parameter
Standard
Initial
Operating
1. Runway lights
a. Threshold lights
All on
All on
75% on for VFR and non-
precision IFR runways 2/
b. End lights
All on
All on
75% on
c. Edge lights
All on
All on
85% on except for CAT 2
and 3 runways which
require 95% on
95% on
d. Centerline lights
All on
All on
e. Touchdown zone lights
All on
All on
90% on
2. Taxiway lights
a. Edge lights
All on
All on
85% on
b. Centerline lights
All on
All on
90% on
3. Lamp current
Amperes
Amperes
Amperes
(series circuit)
a. 3 step, 6.6 A
6.6
6.40-6.70
Same
5.5
5.33-5.67
as
4.8
4.66-4.94
initial
b. 5 step, 6.6 A
6.6
6.40-6.70
Same
5.2
5.04-5.36
as
4.1
3.98-4.22
initial
3.4
3.30-3.50
2.8
2.72-2.88
c. 5 step, 20 A
20.0
19.40-20.30
Same
15.8
15.33-16.27
as
12.4
12.03-12.77
initial
10.3
9.99-10.61
8.5
8.24-8.76
5%
4. Lamp voltage
Lamp voltage
+ 3%
(parallel circuits)
rating
121
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