
T400 Controller Facilities Manual
667/EB/20200/000 Page 19-9 Issue 9
Figure 19.4 - LMU Hold with losing phase delay
R/A
A
AMBER
AMBER
AMBER
AMBER
A
B
C
D
R/A
R/A
R/A
046 12
Time (secs)
E
F
G
H
STAGE 2......STAGE 1
Hold timer
started with
13 sec.
Intergreen
and gaining
phase delay
timers held.
Hold timer
expires and
hold
removed.
13 15 19
Intergreen
from C to H
started but
held.
The 6 sec
intergreen from C to
H only started when
the hold was
removed.
E & F would start
at this point but
are held off
Phase H would
start at this point
but is held off
Notes:-
(i) All intergreens are set to 6 seconds.
(ii) Hold time (SIE) set to 7 seconds.
(iii) 1st RLM fail active.
(iv) Losing phase delay of 6 seconds set from phase C.
(v) Phase C only conflicts with phase H.
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