SDR ASAA2013042694619

Service difficulty report · Autoland Sys · Boeing 737890

Difficulty date: April 26, 2013
Submitted: April 30, 2013
Operation: Air carrier
Aircraft: N590AS
Make and model: Boeing 737890
Aircraft serial: 35687
Aircraft time: 20,154 hours, 6,233 cycles
System (JASC): 2210 · Autopilot System
Part: Autoland Sys
Condition: Malfunctioned
Stage of operation: LD
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

AUTOLAND UNSUCCESSFUL. ACFT DOVE FOR RUNWAY DURING LAST 10 FEET CAUSING BOUNCING OF ACFT 3 FEET INTO THE AIR. ACFT GROUNDED. PERFORMED DFCS FAULT REVIEW (BITE GRP 20) IAW FIM 22-11, TASK 801, NO FAULTS. PERFORMED RECORDED FAULT REVIEW OF HGS IAW SMM REF 34-36-00, FOUND ILS ANOMALY APPROACH WORN LONG POS EXCEED. PRECAUTIONARY PERFORMED DFCS. LRU REPLACEMENT TEST FOR MMR/ILS IAW FIM 22-11, TASK 802 AND HGS SENSOR TEST FOR MMR/ILS IAW SMM REF 34-36-00. BOTH TESTS PASS.