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 MIL-HDBK-1023/4
Table 16
Preventive Maintenance Inspection Schedule for Runway End Identifier Lights (REIL)
D W M B S A
U
A K T I M N
N
Maintenance Requirement
I L H M A N
S
L Y L H N L
C
Y
Y Y Y Y
H
1. Check operation of lamps.
X
2. Check the operation of controls.
X
3. Check cleanliness of optical system.
X
4. Check for mechanical damage or misaligned parts.
X
5. Check operation of interlocks.
X
6. Check for vegetation around lights.
X
7. Check cabinets for cleanliness and moisture.
X
8. Check electrical connections.
X
9. Check alignment and elevation of unidirectional REIL;
X
Check elevation only of omnidirectional units.
10. Realign unidirectional REILs, as required.
X
11. Check baffles on REIL (if used).
X
12. Check power distribution equipment.
X
13 Check insulation resistance of cable.
X
14. Check resistance of grounding systems.
X
15. Service timer motor and contacts (if used).
X
16. Check need for painting.
X
5.11
Medium Intensity Approach Lighting Systems (MALSR)
5.11.1
Preventive Maintenance Inspection Procedures. A typical layout of the MALSR
System is shown in Figure 18. To perform PMIs contained in Table 17, proceed as follows:
a) Daily Check. Check and record burned-out lamps.
b. Weekly checks
(1) Request tower personnel to turn on the system and cycle through each
brightness step from the remote control panel. If the system is equipped with air-to-ground radio
control, check each brightness step for proper operation. During the sequence, the maintenance
technician should be in a position to observe the system operation.
(2) Replace burned-out lamps as necessary to meet the criteria in Appendix A,
Table A-2.
(3) Check the exterior optical surface of all lights. Clean as required.
68
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