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activated automatically.
Above every seat group (ABC + DEF) an
additional mask will fall down.
Boarding Sequence
passenger bridge/jetway or one stair L1
1. preboarding
2. rows 20-38
3. rows 01-19
two stairs L1 + L4
1. preboarding
2. rows 01-19 (front entry) and
¨
A318/A319/A320/A321
NONDESTRUCTIVE TESTING MANUAL
PART 1 - GENERAL
ALI NO. 55-20-07
EFFECTIVITY: A318,A319,A320,A321 55-20-07 Page 101
Aug 01/07
Printed in Germany
1. DESCRIPTION
A. This procedure covers the inspection of the sandwich structure of the elevator
panels using thermographic technique for trapped water inside the honeycomb
core cells.
B. This inspection is to be done from the outside after artificial thermal
excitation of the elevator.
C. Three alternative thermal excitation methods can be applied:
- METHOD A: Heating the whole elevator inside an oven.
- METHOD B: Heating the elevator with blankets.
- METHOD C: Cooling the whole elevator inside a refrigerator.
D. Inspection must be performed away from any type of hot or cold source and in
ambient temperature within the range of 10 to 30º C (50 to 86º F).
E. In order to perform this inspection two people are recommended, one NDT
inspector and one assistant. The assistant will scan the inspection areas and
the inspector will mark out the trapped water areas on the skin.
NOTE: AIRBUS gives a specific thermographic course for this inspection. AIRBUS
recommends you do this training course before you do this inspection.
F. For those thermographic trapped water indications partially hidden by
lightning strips, a X-Ray inspection procedure is provided. This X-Ray
inspection is an alternative procedure to remove the lightning strip and
repeat the thermographic inspection.
2. PREFERRED INSPECTION
A. 55-20-07, PART 10 - THERMOGRAPHIC, Page Block 1001
3. ALTERNATIVE INSPECTION
A. 55-20-07, PART 2 - X-Ray, Page Block 201, (only for lightning strip areas)
A318/A319/A320/A321
NONDESTRUCTIVE TESTING MANUAL
PART 2 – X-RAY
ALI NO. 55-20-07
EFFECTIVITY: A318,A319,A320,A321 55-20-07 Page 201
Aug 01/07
Printed in Germany
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
1.5 mm x 1.5 mm (0.059 in. x 0.059 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
it is recommended to use 10 in. x 12 in.
films and overlap if needed.
NOTE: Any comparable X-Ray equipment may be used provided that it is capable of
meeting the requirements of this procedure.
5. PREPARATION FOR INSPECTION
WARNING: OBSERVE STANDARD WARNINGS AND CAUTIONS BEFORE WORKING ON, OR NEAR
HORIZONTAL STABILIZER
A. Make sure that the surface of the inspection area is clean and smooth.
B. Check the inspection area for any visible damage or discontinuities.
A318/A319/A320/A321
NONDESTRUCTIVE TESTING MANUAL
PART 2 – X-RAY
ALI NO. 55-20-07
EFFECTIVITY: A318,A319,A320,A321 55-20-07 Page 202
Aug 01/07
Printed in Germany
C. Place the X-ray films to mark out their limits on the skin.
NOTE: Overlap films if needed.
D. Mark out the center point of each film location for further X-ray source
positioning.
6. INSPECTION PROCEDURE
WARNING: NATIONAL SAFETY PRECAUTIONS RELATED TO RADIATION MUST BE FOLLOWED DURING
THIS X-RAY INSPECTION PROCEDURE.
A. Place one X-ray film in its correct position.
B. Position the X-ray tube perpendicular to the upper panel and centered to the
film to be shot. Refer to Figure 202 for typical examples of X-ray tube and
film positioning.
C. When inspecting an area with two or more films, each film must be placed and
　
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