What was found
MIA - FLT 144 - DURING CRUISE, NR 1 ENGINE, S/N 4318, OIL FILTER BYPASS LIGHT ILLUMINATED. REMOVED AND REPLACED PRESSURE SWITCH, MFG P/N 21SN04-149. OPERATION CHECK AND ENGINE RUN NORMAL. (M)
- Difficulty date
- February 1, 1997
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N93107
- Make and model
- Boeing 747131
- Aircraft serial
- 19673
- System (JASC)
- 7931 · Engine Oil Pressure
- Part
- Pressure Switch
- Part number
- 21SN04149
- Condition
- Failed
- Location
- Nr 1 Engine
- Stage of operation
- CR
- Nature of condition
- N
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.