This setup is very sensitive to thin skin-to-core bonding. If the panel skin is 0.020 inch
thick or less, move the probe slowly over the skin and note the slight amplitude change
(bounce) as the probe senses alternately the honeycomb cell nodes and cell walls. Be
sure of panel configuration. Panel edges and attachment points may not be bonded
structure and do not normally contain honeycomb. These areas will respond similarly to
voids with the Bondmaster. Panels having rigidified skins are more easily scanned using
wide Teflon tape on the probe holder.
18.104.22.168 Marking and Recording of Inspection Results. Mark and record as required by paragraph 1.3.
Attention shall be directed to accurately marking the boundaries of all voids on both
sides of the panel. These markings will be needed to determine acceptance/rejection
criteria in accordance with the applicable technical manuals listed in Table 1-1.
Backup Method. None required.
System Securing. Reinstall acceptable panels that were removed for inspection in accordance with the
applicable technical manual listed in Table 1-1.
FLUID IN HONEYCOMB CORE FUSELAGE PANELS, VERTICAL FIN, ETC. (RT).
Description (Figure 4-1. Index No. 4). This inspection is applicable to parts or components made of
metallic/nonmetallic skins bonded to metallic/nonmetallic cores and laminations of facings of metal or fiberglass panels.
The structural assembly components identified for inspection are: forward fuselage honeycomb panels, decking
honeycomb panels, and vertical fin honeycomb panels.
Defects. Fluid in honeycomb core of fuselage panels, vertical fin, etc.
Primary Method. Radiography.
Assure compliance with all applicable safety precautions set forth in TM 55-1500-335-23
(Nondestructive Inspection Methods manual) listed in Table 1-1. A hazard associated
with exposure to ionizing radiation is that serious injury can be inflicted without pain,
burning, or other sense of discomfort during the exposure period. Radiation protection
shall be utilized in accordance with AR40-14/DLAR 1000.28.
22.214.171.124 NDI Equipment and Materials. (Refer to Appendix B.)
Tripod, X-ray tubehead stand