Rf Core failing to report

Over the last few days one of our APs keeps losing sessions with connected SMs. In each case the SMs switch over to another sector at the same timestamps as these errors that I found in the AP event logs. Does anyone understand or have an explanation for this error message? I cannot find reference to it anywhere.

03/20/2014 : 09:59:22 MST : : Bridge Core : Rf Core failing to report.
03/21/2014 : 17:22:45 MST : : Bridge Core : Rf Core failing to report.
03/24/2014 : 09:53:42 MST : : Bridge Core : Rf Core failing to report.
03/24/2014 : 10:22:59 MST : : Bridge Core : Rf Core failing to report.
03/24/2014 : 10:23:02 MST : : Bridge Core : Rf Core failing to report.

AP Information:

Device Type :
5.7GHz MIMO OFDM - Access Point
Software Version :
CANOPY 12.2.2 AP-DES
Board Type :
P12
Combo Radio Mode :
MIMO OFDM Only
FPGA Version :
110713
FPGA Type :
C200
PLD Version :
16
Uptime :
17d, 15:43:08
System Time :
14:19:44 03/24/2014 MST
Last NTP Time Update :
14:18:54 03/24/2014 MST
Ethernet Interface :
100Base-TX Full Duplex
Regulatory :
Passed
Channel Center Frequency :
5735.0 MHz
Channel Bandwidth :
20.0 MHz
Cyclic Prefix :
1/16
Color Code :
58
Max Range :
12 Miles
Transmitter Output Power :
19 dBm

Engineering is looking into this RF core issue.

Was this ever addressed by engineering?

 I'm seeing these same entries on the event log for a 430AP running 13.4 firmware.

Many root causes of this symptom lead back toward hardware failure.  If the unit is under warranty, please open a support case to help address the issue.