Honeywell SPZ-8000 - Power-On and Alignment Operation

SPZ--8000 Digital Integrated Flight Control System
A28--1146--055
REV 2
LASEREF
R
II/III Inertial Reference System (IRS)
A--6
POWER--ON AND ALIGNMENT OPERATION
The power--on and alignment procedure is given in Table A--1.
Step
Procedure
1 Verify that MSU mode select switch is set to OFF.
CAUTION
NAVIGATION PERFORMANCE MAY BE DEGRADED IF
THE IRU IS ALIGNED AT LATITUDES ABOVE 70_
__
_.
2 Set aircraft circuit breakers for IRU to ON position. Make
sure that aircraft is stationary.
CAUTION
THE IRS DOES NOT COMPLETE ALIGNMENT IF THE
AIRCRAFT IS MOVED. VERIFY THAT THE AIRCRAFT IS
STATIONAR Y DURING ALIGNMENT.
3 If IRU is being aligned below 70_, set MSU mode select
switch to ALIGN or NAV. If IRU is being aligned above 70_
latitude, set mode select switch to ALIGN.
4 Initialize IRU through the FMS.
5 Wait until the alignment is complete. The ALIGN
annunciator goes out.
6 Move select switch to the NAV position.
Power--On Alignment Procedure
Table A- -1