SDR CA150429006

Service difficulty report · Display · Boeing 737*

Difficulty date: April 28, 2015
Submitted: August 5, 2015
Operation: General aviation
Make and model: Boeing 737*
Aircraft time: 1,038 hours
Engine: Cfmint CFM567B27E
System (JASC): 3160 · Central Display
Part: Display
Condition: Faulted
Location: Cockpit
Stage of operation: CR
How discovered: O
Nature of condition: N
Precautionary procedure: A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(CAN) FLIGHT CREW REPORTED THAT APPROX 100NM PRIOR TO ETOPS ENTRY, BOTH DISPLAY SOURCE FLAGS ILLUMINATED SIMULTANEOUSLY. AN AIR TURN BACK WAS INITIATED. AFTER APPROX 5 MINUTES THE FLAGS CLEARED ON THEIR OWN. TESTED SYSTEMS & FOUND FAULT CODE 31-67830, NO VOR 1 DATA, DURING CDS BITE. VOR 1 & 2 WERE SWAPPED FOR TROUBLESHOOTING & BOTH SYSTEMS PASSED TESTING. FAULT WAS DEEMED INTERMITTENT & ACFT OK FOR SERVICE.