TM 9-2320-366-10-1
Table 2-1. Preventive Maintenance Checks and Services (All Models) (Cont)
Location
Item
No.
Interval
Item to
Check/
Service
Crewmember
Procedure
Not Fully
Mission Capable
If:
45
Weekly
Heater/
Defrost
Controls
Check FAN switch, HEAT
control, VENT control, and
DEFR (defrost) control for
proper operation (para 2-
31).
2-87
