EASB - Eurocopter

EASB
- Restriction prohibiting operations which do not enable an emergency landing on the ground
within 10 minutes at Vy, for AS332 and AS532 helicopters, regardless of whether or not they are equipped
with a VHM system, and for EC225 and EC725 helicopters not equipped with a M’ARMS system, except if
a specific Non-Destructive Test (NDT) by Eddy current has been performed on the component, in the area
of the weld.
Indeed, EUROCOPTER has launched calculations to define the maximum values on the red thresholds of
the EuroArms and EuroHums indicators of AS332/AS532 helicopters, which are equivalent to the MOD-45
indicator of the M’ARMS system of the EC225/EC725 helicopters.
Pending the results, EUROCOPTER prohibits flights over these areas, except if a Non-Destructive Test
(NDT) by Eddy current is performed previously.
Revision 2 of this ALERT SERVICE BULLETIN affects compliance with Revision 1.
1.D. DESCRIPTION
This ALERT SERVICE BULLETIN defines the limitations of offshore flights of helicopters that are part of the
SUPER PUMA family:
- either by limiting the operational conditions,
- or by monitoring the bevel gear through the Vibration Health Monitoring system (VHM).
- or by checking the welded area condition by Eddy current check if necessary.
Revision 1:
- To extend effectivity to all serial numbers (S/N) of bevel gears with part numbers 332A32-5101-
00/05/10/15.
- To reduce the VHM data downloading interval.
- To prohibit flights over water for aircraft without operational VHM system.
Revision 2:
The purpose of Revision 2 of this ALERT SERVICE BULLETIN is to define the new flight conditions for
AS332, AS532, EC225 and EC725 helicopters regardless of the overflown areas.
Revision 0 2012-06-27 Page 4/15
Revision 2 2012-11-21 This document is available on the internet: www.eurocopter.com/techpub