SDR ASAA2016041816447

Service difficulty report · Transmitter · Boeing 737990ER

Difficulty date: April 18, 2016
Submitted: April 20, 2016
Operation: Air carrier
Aircraft: N448AS
Make and model: Boeing 737990ER
Aircraft serial: 36356
Aircraft time: 99 hours, 43 cycles
Engine: Ge CFM567B24
System (JASC): 7920 · Engine Oil Distribution (Airframe Furnished)
Part: Transmitter
Part number: QA07656ISS2
Condition: Failed
Location: Nr 1 Engine
Stage of operation: TX
How discovered: O
Nature of condition: J
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, APPROXIMATELY 30 SECONDS ENGINE NR 1 OIL FILTER BYPASS LIGHT ILLUMINATED. LIGHT EXTINGUISHED AFTER ENGINE NR 1 SHUTDOWN. ACFT GROUNDED. ACCOMPLISHED STEPS A-E, 2, C OF FIM TASK 79-05, TASK 817. REPLACED NR 1 ENGINE SCAVENGE OIL FILTER CLOGGING TRANSMITTER, OPS/LEAK CHECK OK, REF AMM 79-21-07-400-801-F00. PERFORMED FIM 79-05, TASK 817. REPAIR CONFIRMATION, STEP F, PASSED CONFIRMATION.