Service difficulty report · Unknown · Boeing 737890

Difficulty date
June 27, 2017
Submitted
June 28, 2017
Operation
Air carrier
Aircraft
N585AS
Make and model
Boeing 737890
Aircraft serial
35683
Aircraft time
37,750 hours, 11,280 cycles
Part
Unknown
Condition
Malfunctioned
Location
Autopilot Sys
Stage of operation
NR
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

F/O MASTER, A/P ENGAGED. AT LOC CAPTURE F/O LOC FLIGHT DIRECTOR BAR REMOVED FROM VIEW. AT GS INTERCEPT, GS FD BAR ALSO REMOVED. AUTOPILOT REMAINED ENGAGED, CONTINUED CORRECT GUIDANCE. A/P MANUALLY DISENGAGED, CYCLED FLIGHT DIRECTORS (BOTH) CA FD REMAINED IN VIEW BUT F/O FD REMAINED EXTINGUISHED. AFTER TOUCHDOWN PSEU LIGHT ILLUMINATED AND EXTINGUISHED APPROXIMATELY 5 MINUTES LATER. GROUNDED - YES. REF LOGPAGE 11724652 FOR WORK PERFORMED: NO PREVIOUS RAD ALT FAULTS LOGGED IN DFCS, HGS, OR PSEU PRIOR TO FLIGHT LEG 3. RESET NR 2 RAD ALT C/B. ACCOMPLISHED RAD ALT OPS CHECK, REF AMM 34-33-00, TEST PASSED. LRU STATUS GREEN DURING BITE CHECK. NO EXISTING FAULTS IN PSEU, HGS, OR DFCS. LAND VERIFY AND HGS SYSTEM TEST PASSED, REF AMM 22-00-01 LLM MAINTENANCE PRACTICES.