Service difficulty report · Unknown · Boeing 737890

Difficulty date
July 2, 2018
Submitted
July 6, 2018
Operation
Air carrier
Aircraft
N530AS
Make and model
Boeing 737890
Aircraft serial
36578
Aircraft time
32,232 hours, 9,571 cycles
Part
Unknown
Condition
Malfunctioned
Location
Autopilot Sys
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
K

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

What was found

AP A DISCONNECTED TWICE IN CRUISE. ALSO CAPT PITCH BAR WAS OUT OF VIEW WITH AP A IN USE. GROUNDED - YES. FAULT FLIGHT REVIEW SHOWED LEG 11 WITH 13 FAULTS RELATING TO NR 1 SMYD. NR 1 SMYD SHOWED FAULT MESSAGE 22-21001 LEGS 11, 33 & 40 ON THE GROUND AND INTERMITTENT. PERFORMED AMM TASK 22-23-00-810-801 NO FAULTS DETECTED, BITE TEST GOOD.