Change 1 adds new safety requirements to DO-284. The bit error 
rate (BER) is now indicated in the integrity value and this 
update is included through the document. 

The number of operational hazards are increased in the 
Operational Hazard Assessment as outlined below:
-	Hazard Class 2 (must be extremely remote)4 hazards
-	Hazard Class 3 (must be remote)	20 hazards
-	Hazard Class 4 (may be probable)5 hazards

Safety goal requirements now total 33. In Appendix B1, 
Operational Safety Assessment, several tables are updated with 
new information regarding loss of communication hazards related 
to interference caused by an analog transmission. 

Numerous other minor changes are also included.