SDR AALA201905159011

Service difficulty report · Deu · Boeing 737823

Difficulty date: May 13, 2019
Submitted: May 15, 2019
Operation: Air carrier
Aircraft: N355PU
Make and model: Boeing 737823
Aircraft serial: 31277
Aircraft time: 4,846 hours, 2,017 cycles
System (JASC): 3160 · Central Display
Part: Deu
Condition: Malfunctioned
Location: Cockpit
Stage of operation: DE
How discovered: O
Nature of condition: O
Precautionary procedure: K

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

What was found

AIRCRAFT NOT GROUNDED: PILOT REPORTS DURING DESCENT IN VNAV PATH, DESCENDING THROUGH FL 340 DISPLAY SOURCE ON PFD APPEARED. DISPLAY SOURCE DISAPPEARED AND RETURNED 3 MORE TIMES DURING DESCENT. MAINTENANCE ACCOMPLISHED BITE TEST OF BOTH CDS SYSTEMS- FOUND DEU 1 SOFTWARE RESET FAULT MAINT MSG 31-60041. ACCOMPLISHED DEU 1 SELF TEST IAW FIM 31-62-00-810-809 AND IAW 31-62-00-810-802 TEST OK.