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Aug 01/07
Printed in GermanyA318/A319/A320/A321
NONDESTRUCTIVE TESTING MANUAL
PART 2 – X-RAY
ALI NO. 55-20-07
1. COMPONENT OR AREA TO BE INSPECTED (Refer to Figure 201)
A. This procedure can be applied In-Service, to determine the extent of trapped
water behind a lightning strip, in cases where the full extent of a
thermographic finding may be partially hidden by the strip.
B. The X-ray procedure will be alternative to remove the lightning strip and
repeat the thermographic inspection.
2. DESCRIPTION OF POSSIBLE DAMAGE
A. Water in honeycomb cells located under lightning strips.
3. RELATED DOCUMENTS
A. NTM, Chapter 51-10-10, X-Ray inspection to detect water in honeycomb sandwich
parts
B. NTM, Chapter 51-20-00, Page Block 201, X-Ray - General
C. NTM, Chapter 51-21-01, Page Block 201, X-Ray Equipment
4. EQUIPMENT AND MATERIALS
A. The equipment used in the development of this procedure was as follows:
(1) X-Ray Unit : MG 161L from PHILIPS, tube being MCN166, kV range
15-160 kV, constant potential, Standard spot size
mm x mm ( in. x in.)
(2) X-Ray Film : Class 2, Type D7 from AGFA
(GE INSPECTION TECHNOLOGIES)
NOTE: Select film size related to the area to be
covered. In order to get well focused images
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