Service difficulty report · Transmitter · Boeing 737990ER

Difficulty date
April 2, 2013
Submitted
April 5, 2013
Operation
Air carrier
Aircraft
N409AS
Make and model
Boeing 737990ER
Aircraft serial
41733
Aircraft time
451 hours, 137 cycles
Part
Transmitter
Part number
QA07656ISS1
Condition
Failed
Location
Nr1 Oil
Stage of operation
TX
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

AFTER LANDING, OIL FILTER BYPASS ILLUMINATED. WITH MAINT MESSAGE 79-31121, PERFORM FIM 79-21, TASK 806. REF SAME FIM, PERFORMED STEP G AT SCAVENGE OIL FILTER CLOGGING TRANSMITTER RECEPTACLE, DP0703, PINS 1702, .478 MEG OHMS. SHOULD BE LESS THAN 5 OHMS. S125 BAD. R & R OIL FILTER CLOGGING TRANSMITTER IAW AMM 79-21-07. REPLACED SCAVENGE OIL FILTER ELEMENT IAW AMM 79-21-06. CONFIRMED FAULT CLEARED IAW FIM TASK 79-21- 806. PERFORMED IDLE LEAK CK. LEAK CK GOOD. OK FOR SERVICE.