W DOC AIRBUS | AMM A320F

Check of the Electrical Bonding of Antenna Fairing (without Non-Conductive Finish paint) with a Megohmmeter

TASK 20-28-00-720-010-A-01
Check of the Electrical Bonding of Antenna Fairing (without Non-Conductive Finish paint) with a Megohmmeter

1. Reason for the Job
This alternative test lets you do the check of the continuity between the antenna fairing and the aircraft structure.
This procedure is applicable only if there is no non-conductive finish paint on the antistatic paint.
This procedure is not applicable to the aircraft nose radome.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
MEGOHMETER MULTIRANGE
 B. Referenced Information
REFERENCE
DESIGNATION
TASK 20-28-00-720-010-A
Check of the Electrical Bonding of External Composite Panels with a Resistivity - Test Set
TASK 20-28-00-869-002-A
Table of the Maximum Permitted Resistance-Values
3. Job Set-up
Subtask 20-28-00-869-084-A
A. General
   (1) The recommended procedure for the check of the electrical bonding of the external composite panels and the antenna fairing (with or without non-conductive finish paint on the antistatic paint) uses a resistivity test set (Ref. AMM TASK 20-28-00-720-010).
4. Procedure
Subtask 20-28-00-869-085-A
A. Measurement of the Electrical Resistance
   (1) Equipment
     (a) MEGOHMETER MULTIRANGE, with the applicable leads and prods:
  • Diameter 4 mm (0.16 in.).
  • Set the range to 200 MOHMS.
  • Set the tension to 500 VDC.
   (2) Put one prod on the composite panel:
  • A minimum of 50 mm (1.97 in.) (Typical 100 mm (3.94 in.)) from the edge of the panel and from the bonding point.
   (3) Put the other prod to the adjacent primary metallic structure.
   (4) Measure the resistance value:
   (5) Remove the test equipment.
5. Close-up
Subtask 20-28-00-942-112-A
A. Make sure that the work area is clean and clear of tools and other items.
[Rev.10 from 2021] 2026.03.31 23:00:12 UTC
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