MD-83
Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Critical
Flight Crew Diverted; Flight Crew Landed As Precaution; General Declared Emergency
Aircraft
I was the pilot flying during level cruise flight approximately 60 miles north of ZZZ. Captain's PFD attitude indications and NAV display/HDG information failed concurrently. We were approaching a line of weather and I elected not to continue IMC with a failed AHRS system. I declared an emergency requested a turn for ZZZ and we began a descent to maintain VMC. The QRH was referenced and complied with - the landing was uneventful. My decision to divert was reinforced; as I was concerned for the integrity of the remaining AHRS system. This decision was made based on the fact that on the previous leg (same aircraft) inbound to [destination] we had the First Officer's #2 AHRS fail and after a 6 hour delay it was replaced prior to [departure].
[Narrative 2 had no additional information]
MD-83 flight crew reported loss of #1 AHRS in cruise flight. They declared an emergency and diverted to a nearby suitable airport.