Service difficulty report · Sensor · Boeing 737990ER

Difficulty date
June 8, 2016
Submitted
June 10, 2016
Operation
Air carrier
Aircraft
N492AS
Make and model
Boeing 737990ER
Aircraft serial
44110
Aircraft time
1,964 hours, 672 cycles
Part
Sensor
Part number
APTE8A20007BARD
Part serial
DN046272G
Condition
Failed
Location
Oil Pressure
Part time
1,964 hours, 672 cycles
Stage of operation
TX
How discovered
O
Nature of condition
J
Precautionary procedure
D

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

What was found

DURING ENGINE NR 1 START OIL PRESSURE FAILED TO RISE ABOVE 5 PSI BY STATER CUTOUT. LOW OIL PRESSURE, REMAINED ILLUMINATED. AS I ANNOUNDED I WAS ABORTING START ENGINE SHUT ITSELF DOWN. DID QRH AND MOTORED STARTED FOR 60 SECONDS. ENGINE REACHED APPROXIMATELY 399 EGT. ACFT GROUNDED. PERFORMED ELECTRONIC ENGINE CONTROL NR 1 FAULT REVIEW. NO RECENT FAULTS LOGGED. CDS-DEU'S CURRENT STATUS GOOD. NO FAULTS LAST 3 FLTS. VISUAL INSPECTION FOUND NO DAMAGE OR LEAKS. REMOVED, INSPECTED, AND REINSTALLED MAG CHIP DETECTORS, REF AMM 79-21-05. FOUND NO DEBRIS. R & R OIL PRESSURE SENSOR, REF AMM 79-32-01. PERFORMED TEST (3A) ENGINE IDLE LEAK CHECK, REF AMM 71-00-00-700-801-F00. NO LEAKS FOUND. PERFORMED TEST, 7 ELECTRONIC ENGINE CONTROL TEST, REF AMM 73-21-00-700-804-F00. TEST PASSED. PERFORMED ENGINE RUN AND TAXI TEST, ALL ENGINE INSTUMENTS WITHIN LIMITS, REF MIG 137.