There are several Service Bulletin related issues with the KX-155A. Several Service Bulletins are required during a unit's next repair or at the earliest opportunity. Service Bulletin 11 addresses the repair of the KX-155A if the transmitter should fail. This Service Bulletin requires the replacement of the transmitter. Units with serial numbers 24100 and below are affected. Honeywell requires that units affected by this Service Bulletin be returned to Honeywell. If the KX-155A unit is still under new product warranty, then Honeywell will issue warranty credit or payment. If the unit is not under warranty, then Honeywell will not perform the service bulletin and deems the unit unrepairable.

From a purchasing standpoint, Southeast Aerospace cannot purchase units under serial number 24100 since we offer a 6 month warranty when these units are sold. Since there is the possibility that the transmitter in the KX-155A could fail within 6 months, it is not practical to obtain units below serial number 24100.