SDR ASAA2016041516425

Service difficulty report · Warning Message · Boeing 737990ER

Difficulty date: April 15, 2016
Submitted: April 18, 2016
Operation: Air carrier
Aircraft: N409AS
Make and model: Boeing 737990ER
Aircraft serial: 41733
Aircraft time: 12,899 hours, 4,211 cycles
System (JASC): 2210 · Autopilot System
Part: Warning Message
Condition: Activated
Stage of operation: IN
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

WHILE PERFORMING NR 49 LAND VERIFY BITE STEP 49.35, FAILS FCC A AND FCC B FOR AILERON POSITION SENSOR NR 1 AND AILERON POSITION SENSOR NR 2, FAULT MAINTENANCE MESSAGES 22-11145 & 22-11146. ACFT GROUNDED. PERFORMED BITES 49.35 AND 60.35 NUMEROUS TIMES. NO HELP, REF FIM 22-12, TASK 813 FOR T/S. RAN LAND VERIFY IAW AMM 22-01-05, OPS NORMAL.