SDR ASAA12511041

Service difficulty report · Controller · Boeing 737890

Difficulty date: February 3, 2012
Submitted: February 6, 2012
Operation: Air carrier
Aircraft: N536AS
Make and model: Boeing 737890
Aircraft serial: 35203
Aircraft time: 19 hours, 16 cycles
System (JASC): 3442 · Weather Radar System
Part: Controller
Condition: Malfunctioned
Location: Weather Radar
Stage of operation: NR
How discovered: O
Nature of condition: O
Precautionary procedure: K

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

What was found

WX RADAR WORKS NORMALLY EXCEPT WHEN AUTO IS DESELECTED AND TRANSFER BUTTONS ARE DESELECTED THE LEFT TILT KNOB INDEX DOES NOT AGREE WITH ND DISPLAY ON CAPT'S ND. AFTER CHECKING TILT AND GROUND RETURNS WITH RIGHT COPILOT KD DISPLAY THE RIGHT INDEX KNOB NUMBER AGREES WITH THE COPILOT ND DISPLAY TILT NUMBER BUT THE CPT ND TILT READS 0 DEP WHEN LEFT TILT KNOB READS PLUS 4 DEGS. RE INDEXED CAPTS WX RADAR TILT CONTROL TO ZERO DEGREES.