SDR ASAA2015121414261

Service difficulty report · Sensor · Boeing 737890

Difficulty date: December 14, 2015
Submitted: December 16, 2015
Operation: Air carrier
Aircraft: N588AS
Make and model: Boeing 737890
Aircraft serial: 35685
Aircraft time: 31,208 hours, 9,519 cycles
System (JASC): 2210 · Autopilot System
Part: Sensor
Condition: Failed
Stage of operation: IN
How discovered: C
Nature of condition: L
Precautionary procedure: K

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

What was found

LAND VERIFY BITE GROUP 49 IAW AMM 22-11-00 3 TIMES, FAILS AUTOTEST LIBRARY TEST 21 EA TIME ANALOG SENSOR A/B, WITH MSG 22-11649, SENSOR FAIL, SUSPECTED LRU: TRANSDUCER 2. ACFT GROUNDED. FFR SHOWS NO FAULTS, ACCOMPLISHED LAND VERIFY TEST SEVERAL TIMES WITH NO DISCREPANCIES NOTED, TEST PASSES EVERY TIME REF AMM 22-11-00/201.