SDR ASAA2016032816120

Service difficulty report · Warning Light · Boeing 737890

Difficulty date: March 28, 2016
Submitted: March 30, 2016
Operation: Air carrier
Aircraft: N597AS
Make and model: Boeing 737890
Aircraft serial: 35689
Aircraft time: 30,556 hours, 9,412 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Warning Light
Condition: False Activation
Stage of operation: NR
How discovered: 9
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

ON PROGRESS, PAGE 1, RECEIVED THE FOLLOWING MESSAGES WHEN VNAV WAS SELECTED: "CHECK ALT TARGET AND "VNAV INVALID-PERFORMED". ACFT GROUNDED. PERFORMED FIM 34-61-TASK 801 BITE CHECK OF FMC, NO FAULTS FOUND. CHECKED ACFT POWER SYS RESTORED. SUSPECT INTERMITTENT FAULT.