TM-5-5420-279-10
A.2.1.1
The following are the requirements for inspection and action when the bridge is in
service.
Inspection
Location
Time Interval
Action
Method
Every 12 months until
Visual
Zone A - CrackFirst
central band between
central area between 12mm
Fatigue Monitoring
12 mm holes has failed
holes and external area from
Gauges
then as detailed under
12mm holes to outside edge
'Action'.
of gauge. If central area is
more than 50% cracked,
increase inspection
missions.
If central area is fully
cracked, increase inspection
or each mission.
If whole gauge has cracked,
completely remove unit from
service.
continued