FAA Advisory Circular 43.13-1B
Acceptable Methods, Techniques, and Practices
Aircraft Inspection and Repair
AC 43.13-1B | 5. Nondestructive Inspection (NDI) | 7. Ultrasonic Inspection | 5-95. Bond Testing Instruments
AC 43.13-1B
9/8/98
TABLE 5-7. Acceptable ultrasonic inspection methods associated with the example bonded structure configurations
shown in figure 5-21.
NUMBER
1
2
ACCEPTABLE METHODS
Either
(a) Pulse-echo straight or angle beam, on each side
or
(b) Through-transmission.
Pulse-echo, straight beam, on each skin.
3
Refer to 1 for methods. If all these methods fail to have sufficient penetration
power to detect reference defects in the reference standard, then the ringing
method, applied from both sides, should be used. Otherwise, the ringing method
is unacceptable.
4
Either
(a) Ringing, on each skin of the doubler.
or
(b) Through-transmission
or
(c) Damping.
5
Ringing.
6
Through-transmission. Dotted Line represents beam direction.
7
Either
(a) Through-transmission
or
(b) Damping.
NOTE
A variety of ultrasonic testing methods and instruments are available for adaptation to specific inspection
problems. Other bond inspection instruments can be used if detailed procedures are developed and
proven on the applicable reference standards for each configuration of interest. Some representative in-
struments, which can be used for the inspection of bonded structures are; the Sondicator, Harmonic Bond
Tester, Acoustic Flaw Detector, Audible Bond Tester, Fokker Bond Tester, 210 Bond Tester, and Bon-
dascope 2100.
Page 5-48
Par 5-95