preparation of practice bombs for aircraft loading, refer
to the publication NAVAIR 11-140-5.
FULL-SCALE PRACTICE BOMBS (BDU-45)
Preparation and inspection of BDU-45 (fig. 13-14)
full-scale practice bombs are the same as the GP bombs
discussed earlier in this chapter with the following
exceptions. The spotting charge receptacles must be
checked to ensure they are clean, free of foreign
material and moisture, and not deformed.
CXU-4/B Spotting Charge
Prepare, inspect, and install the CXU-4/B spotting
charge as follows:
Check spotting charge for damage or leakage.
Ensure retaining ring and spring washer is
Install spring washer at base of spotting charge
Slide spotting charge into receptacle and
secure with retaining ring (pliers may be
MXU-735 Nose Plug
Inspect and install nose plug as follows:
Ensure threads are not damaged.
Install nose plugs, tighten with spanner wrench
or ratchet, and tighten nose setscrew.
Electric/Electronic Tail Fuzes
Procedures for inspection and installation of tail
fuzes FMU-139 and Mk 376 are the same as for GP
bombs, as outlined previously in this chapter.
Mk 89 Mod 0 Spotting Charge Adapter
Prepare and inspect the Mk 89 spotting charge
adapter (fig. 13-15) as follows:
instruction tag attached.
Remove inertia sleeve and compression safety
spring by unscrewing firing pin head from
Inspect all components, and reject adapter if
any components are damaged.
Figure 13-14.BDU-45/B (typical) practice bomb.