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SANDEL SG102 PILOT’S GUIDE
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CHAPTER 2
OPERATION
NORMAL OPERATION
Flying an aircraft equipped with an SG102 does not require any special
piloting skills; however there are a few key points for the pilot:
Preflight:
Refer to the Approved Flight Manual Supplement for the SG102.
Initialization periods (at 15°C):
o
Mod 0 (S/Ns below 11-2500 - Units shipped prior to
11/28/2008): 4-5 minutes.
o
Mod 1 (S/Ns 11-2500 to 11-3045): less than 3 minutes.
o
Mod 2 (S/Ns 11-3100 and above): approximately 1
Minute
o
SG102/D: approximately 1 Minute
During the initialization period the aircraft should not be moved.
When the Flag is removed from the heading display, the SG102
initialization is complete.
In Flight:
The SG102 supports two slaving modes: “Slaving ON” and
“Slaving OFF”. The “Slaving OFF” mode requires the installation
of Pilot-operated slaving switches.
Under normal conditions the SG102 should be operated with
“Slaving ON”, by moving the Slaving selector switch to the “ON”
position.
To operate in the “Slaving OFF” mode, move the Slaving selector
switch to the “OFF” position. The heading display can now be
adjusted with the CW or CCW manual slew switches as desired.
All displays driven by the SG102 will track the adjusted heading.
Move the Slaving On switch to the ON position to restore slaving
operation. All indicators will immediately slew to the current
magnetic heading.
82011-PG-E
SANDEL SG102 PILOT’S GUIDE
PAGE
2-2
ABNORMAL OPERATION
Outputs Flagged
If the SG102 is inoperative or detects an internal error, all outputs will be
flagged. Reference to an alternate heading source must be made.
Power Interruptions
The SG102 can withstand power interruptions of up to 30 seconds in flight
without losing its initialization. If longer power interruptions are
experienced and the gyro flag appears, it will be necessary to use an
alternate means of primary heading information for the remainder of the
flight.
