This setup is very sensitive to thin skin-to-core bonding. Move 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 rigidized skins are more easily scanned using wide Teflon tape on the probe
Marking and Recording of Inspection Results. Mark and record as required by paragraph
Attention shall be directed to accurately mark the boundaries of all voids. These
markings will be needed to determine acceptance or rejection criteria in accordance
with applicable technical manuals,
4.13.4 Backup Method. None required.
4.13.5 System Securing. If removed, install the work platforms in accordance with the applicable technical manuals
FORWARD LANDING GEAR SUPPORT STRUCTURE (ET).
4.14.1 Description (Figure 4-1. index No. 14). This inspection is applicable to both of the forward landing gear support
4.14.2 Defects. Defects may occur anywhere on the surface of the forward landing gear support structure. No cracks
4;14.3 Primary Method. Eddy Current.
Eddy Current Inspection Unit
Probe, straight, shielded surface, 100 KHz-500 KHz
Probe, right angle, shielded surface, 100 KHz-500 KHz, 901/2 inch drop
Reference Block, three-notched aluminum (0.008, 0.020, and 0.040 EDM notches)