SDR CA101007008

Service difficulty report · Limit Switch · Boeing 737*

Difficulty date: October 6, 2010
Submitted: January 4, 2011
Operation: Air carrier
Make and model: Boeing 737*
Aircraft time: 19,594 hours
Engine: Ge CFM567B24
System (JASC): 2741 · Stabilizer Position Indicating
Part: Limit Switch
Part number: 32EN214
Condition: Unserviceable
Location: Stab Trim
Part time: 22,293 hours
Stage of operation: CR
How discovered: O
Nature of condition: F
Precautionary procedure: A

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

What was found

CREW REPORTED, "STAB WILL NOT TRIM WITH AUTO PILOT ENGAGED". ACFT DIVERTED AS NOT ABLE TO CONTINUE TO FLY RVSM ROUTING DUE TO RESTRICTIONS. CARRIED OUT FIM 22-11, TASK 801, FOUND FAULT CODES 22-11167, 22-11173 AND 22-11181. REPLACED STAB TRIM MOTOR IAW MM 27-41-71. NO FIX, REPLACED S144 AND TESTED SERVICEABLE IAW AMM 27-41-94 AND 22-11-00. LAND VERIFY TEST CARRIED OUT IAW AMM 22-11-00-700-801 ACFT CAT II/III COMPLIENT.