Service difficulty report · Control Panel · Boeing 737890

Difficulty date
February 4, 2017
Submitted
February 7, 2017
Operation
Air carrier
Aircraft
N560AS
Make and model
Boeing 737890
Aircraft serial
35179
Aircraft time
40,033 hours, 12,094 cycles
Part
Control Panel
Part number
4082260939
Part serial
01727829
Condition
Failed
Location
Altitude
Part time
57,445 hours, 26,138 cycles
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

MCP ALTITUDE SELECTOR READOUT HAS DIGITAL NUMERIC BLEED THROUGH. ACFT GROUNDED. REMOVED AND REPLACED DFCS MODE CONTROL PANEL IAW AMM 22-11-34. ALT DEACT REVERSED. TESTS GOOD. PERFORMED DFCS LRU REPLACEMENT TEST FOR MCP TEST GROUP 32 IAW AMM 22-11-34, LAND VERIFY TEST-TEST GROUP 49 IAW AMM 22-11-00 AND HGS SENSOR TEST FOR FCC/AT IAW SMM 34-36-00. ALL TESTS PASS-NO FAULTS . AIRCRAFT REMAINS CAT IIIA AUTOLAND & HGS QUALIFIED. CAT STATUS SCREW REFLECTS SAME. GROUND VERIFICATION SUCCESSFULL.