TM 11-4920-292-15
part numbers for parts which have
brated or preindexed. The compass calibrator is
no other identification.
through the application of compass transmit-
a. Mount Remote Compass Transmitter ML-
ters that are preindexed or precalibrated. A
1, used in OV-1 aircraft in accordance with
preindexed compass transmitter eliminates the
optical transfer procedure described in para-
(1) Remove the following equipment from
the MK-1040A/ASN:
eliminates the calibrating and optical transfer
(a) CX-10934/ASN (W17 cable).
(b) Two angular ring spacers (part No.
and 9-6. Until preindexed or precalibrated com-
2557365).
ble aircraft, the complete procedure described
(c) Two flag ring spacers (part No.
in this manual must be performed to accurately
2557364).
calibrate the compass system. Mount the com-
(2) Insert the flat spacers under the front
posts of the turntable assembly, and the angular
accordance with a, b, c, or d below.
spacers on top of the posts but under the front
of the transmitter mounting plate (part No.
NOTE
2580974). The result should be a 6 incline from
Part numbers shown in parentheses
rear to front.
throughout this section are Sperry
on turntable assembly for U-S aircraft.
9-3