Service difficulty report · Pressure Switch · Boeing 7377H4
FAA SDR system
- Difficulty date
- November 28, 2025
- Submitted
- December 1, 2025
- Operation
- Air carrier
- Make and model
- Boeing 7377H4
- Aircraft serial
- 32541
- Aircraft time
- 58,936 hours, 35,557 cycles
- Part
- Pressure Switch
- Condition
- Faulted
- Location
- Zone 100
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU LOW OIL PRESSURE LIGHT ILLUMINATED IN CRUISE, RESULTING IN SINGLE ELECTRICAL SOURCE. OVERWEIGHT LANDING PERFORMED IAW AOM 12-1-7. SMLDW EXCEEDED BY 10.3. SERVICED APU OIL & REPLACED LOW OIL PRESSURE SWITCH. CHKD GOOD IAW AMM 49-94-22