Service difficulty report · Probe · Boeing 737990ER

Difficulty date
March 2, 2019
Submitted
April 9, 2019
Operation
Air carrier
Aircraft
N481AS
Make and model
Boeing 737990ER
Aircraft serial
44106
Aircraft time
14,172 hours, 4,704 cycles
Part
Probe
Part number
TC29603
Condition
Out Of Tolerance
Location
Nr 2 Engine
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

ENGINE 2 BITE TEST SHOWED: THE T3 SIGNAL IS OUT OF RANGE. MSG NR: 75-20832. LONG TIME FAULT. DEFERRED PER T/C 78273000. GROUNDED - YES. REPLACED S3 PROBE ON NR 2 ENG REF AMM 77-21-01-400-801-F00, EEC TEST NO FAULTS, OPS NML REF AMM 73-21-00-700-804-F00. S3 TEMP READS 1346.43, AFTER CHANGE READS: S1- 46.80 S2- 27.49 S3- 26.78 S4- 43.48. THIS CLEARS PLT.