L3 FA2100 CVR Component Maintenance Manual With Illustrated Parts List page 278

A. Underwater Acoustic Beacon Assembly & Installation
(See Figure 713 and IPL Figure 1, Item 80)
The Underwater Acoustic Beacon is mounted on the Model FA2100's CSMU front
bracket with the beacon's water switch facing to the left (refer to Figure 713, 1–80).
NOTE:
NOTE:
When converting from a 30−Day ULB to a 90−Day ULB, the L−3AR ULB Conversion
Kit, P/N 068E5542−00, is recommended. This kit contains the 90−Day ULB and the
attaching hex mounting screws. Converted CVR units must be marked with MOD−
DOT #15. Refer to FA2100CVR SB022 for more details.
NOTE:
NOTE:
NOTE:
(1) Insert the Underwater Acoustic Beacon (1-80) into the right and left beacon
mount bracket (1-70) with the beacon water switch facing left and replacement
date label visible to the front.
Apply thread-locking adhesive, Table 701 item1, to four 1/4–20, 1" hex-cap
(2)
bolts (1-75).
Insert and tighten secure the
(3)
to the CSMU. Torque mounting bolts (1-75) in a cross−pattern as shown in Figure 713
to 75 in/lbs.
(4)
For those units with customer installed beacons, p/n's: 2100-1020−98 and
2100-1020-99, remove the temporary label which covers the standard identity
label.
(5) Perform a return-to-service test on the recorder in accordance with Section 100
of this CMM.
Use or disclosure of information on this sheet is subject
to the restrictions on the cover page of this document.
The document reference is online, please check the correspondence between the online documentation and the printed version.
AVIATION RECORDERS
COMPONENT MAINTENANCE MANUAL
FA2100CVR
When replacing the 30−day ULB it is recommended that
new mounting hex screws (MS 16995-54) are used to en-
sure a secure connection to the CSMU.
When replacing the 90−day ULB it is REQUIRED that four
new mounting hex screws (L-3AR p/n 2290200424) that are
used to secure the ULB brackets to the CSMU.
Once a unit has been changed to a 90−Day ULB, it can not
revert to a 30−Day ULB due to the Hardware MOD−DOT
marking.
Refer to the IPL effectivity column, as some specific
FA2100CVR Part Numbers that only are allowed only
90−Day ULBs to be installed.
For complete testing of the ULB and battery replacement
procedures, refer to the 90−Day Underwater Locator Bea-
con CMM, L-3 p/n 165-E5542-00.
right and left beacon mount bracket (1-70) with beacon
23–70–04
Assembly
Temp. Rev. 16 Page 721
Apr. 15/16