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SDR ASAA2014100909336

Open the Markdown

Service difficulty report · Autoland Sys · Boeing 737890

FAA SDR system

Difficulty date
October 9, 2014
Submitted
October 13, 2014
Operation
Air carrier
Aircraft
N508AS
Make and model
Boeing 737890
Aircraft serial
35691
Aircraft time
23,662 hours, 7,316 cycles
System (JASC)
2210 · Autopilot System
Part
Autoland Sys
Condition
No Test
Stage of operation
LD
How discovered
9
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

AUTOLAND EVALUATION UNSUCCESSFUL. HGS WAS SUCCESSFUL. ACFT TRACKED LOCALIZER ACCURATELY UNTIL ABOUT 200' AGL WHEN IT STARTED TO DRIFTING TO THE RIGHT. DISCONNECTED AUTOPILOT AT ABOUT 100' AND CORRECTED. ACFT WOULD HAVE BEEN MORE THAN 35' FROM CENTERLINE. PDX 10R ILS WX 25M-DZ OVC4 13/13 30.05 WIND 120/3. ACFT GROUNDED. COULD NOT DUPLICATE MALFUNCTION. NO FAULTS LOGGED IN FFR. LAND VERIFY OP CK NORMAL, REF BITE GROUP NR 49. HGS RTS NORMAL REF MM 34-36-00. LWMP STATUS REMAINS AUTOLAND & HGS QUALIFIED.