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TM-1-1520-238-10 Helicopter Attack AH-64A Apache Manual | Next
BUCS ON Procedures |
TM 1-1520-238-10
2-48.2
Change 9
Table 2-3.
BUCS Flight – Transfer of Controls
CONDITION
CREWMEMBER IN BUCS
TRANSFER TO
ACTION
JAM
PILOT
CPG
The CPG must decouple
the SPAD and press the
BUCS select trigger switch
JAM
CPG
PILOT
The pilot must decouple
the SPAD
SEVERANCE AFT OF
PILOT SEAT
PILOT
CPG
No action required
SEVERANCE AFT OF
PILOT SEAT
CPG
PILOT
No action required
SEVERANCE BETWEEN
CREWSTATIONS
(NOT IN BUCS)
PILOT REMAINS IN
NORMAL MECHANICAL
CONTROL
CPG
The CPG must achieve
sufficient mistrack and
press the BUCS select trig-
ger switch
f. BUCS–Flight Procedural Steps
(1) Crewmember Control of BUCS
(a) If the pilot decouples his SPAD first:
1 The pilot will have control.
2 The CPG can obtain control if he de-
couples his SPAD and presses the CPG BUCS select trig-
ger switch.
3 Control cannot be transferred back to
the pilot.
(b) If the GPG decouples his SPAD first:
1 The CPG will have control.
2 The pilot can obtain control by decoup-
ling the applicable pilot SPAD.
(c) If a severance occurs between crewsta-
tions:
1 The pilot has mechanical control.
2 The CPG can obtain control by press-
ing the CPG BUCS select trigger switch and creating a
sufficient mistrack.
3 Control cannot be transferred back to
the pilot.
(d) If a severance occurs aft of the crewsta-
tions:
1 Either pilot obtains control as soon as
a mistrack is sensed.
2 There is a one (1) second easy–on to
achieve 100% control.
(e) If the CPG BUCS select trigger is pressed:
1 BUCS is engaged under CPG control.
2 Control cannot be transferred back to
the pilot.
(2) Jam and Severance BUCS Engagements
(a) Jam engagement.
1 If it is determined that a BUCS jam en-
gagement is warranted, make an aggressive application
of force in the jammed axis.
2 If more than one axis is jammed, de-
couple the axis that has the highest priority first.
3 After decoupling the SPAD, center the
control.
4 Fly the aircraft. Some control will be
available immediately and full control will be phased in
over a three (3) second period.
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