SDR ASAA2019040538894

Service difficulty report · Display · Boeing 737990ER

Difficulty date: April 3, 2019
Submitted: April 5, 2019
Operation: Air carrier
Aircraft: N464AS
Make and model: Boeing 737990ER
Aircraft serial: 40714
Aircraft time: 19,828 hours, 6,403 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Display
Condition: Malfunctioned
Location: Cockpit
Stage of operation: DE
How discovered: O
Nature of condition: N
Precautionary procedure: O

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

What was found

DURING DESCENT RIGHT ND DISPLAYED VTK, FMC P/RST WARNING ON HEADING & PITCH GUIDANCE RETRACTED FROM VIEW. AFTER 15 SECONDS LIGHT WENT OUT & GUIDANCE RETURNED. GROUNDED - YES. ACCOMPLISHED FMCS BITE REF B737-900 FIM 34-61 TASK 801. NO SENSOR FAULTS LOGGED. INFLIGHT FAULT FOR FLIGHT 1 LOGGED INTERMITTENT FAULT "FMC-R PRESS POS LATE RATE" PERFORMED FIM 34-61 TASK 824 ACCOMPLISHED ADIRS BITE PROCEDURE REF FIM 34-21 TASK 801. BITE TEST PASS WITH NO FAULTS LOGGED.