BendixKing KHF 990 - Manual (Page 49)

The Message flag is reset when the Message page is viewed. The
message flag is also reset for AMD messages and Sounds if the
ENT, CLR, or SCAN key is pushed while the associated state is dis-
played on the ALE page. The Remote Lamp discrete is reset on any
operator action; microphone key, knob or key
Operation
3-12 KHF 950/990 Pilots Guide
Rev. 0
Dec/96
Source Message Flag Remote Lamp Audible Alert ALE Page State
“M”
AMD message received yes yes yes MsgRcv
Sound received yes no no SoundR
ALE link no yes yes Linked
Faults yes *some no
* Remote Lamp not set for VSWR fault
Table 3-1 Operator Alert Indications