Service difficulty report · Pressure Switch · Airbus A321271NX

Difficulty date
August 25, 2025
Submitted
August 25, 2025
Operation
Air carrier
Aircraft
N4073J
Make and model
Airbus A321271NX
Aircraft serial
11129
Aircraft time
10,106 hours, 1,499 cycles
Part
Pressure Switch
Part number
38762552
Part serial
JB32449
Condition
Faulted
Location
Apu Oil Sys
Stage of operation
NR
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

FLT#32, AMS-BOS. (ETOPS) APU CLASS 2 MSG ( CLASS II MAINTENANCE MESSAGES DISPLAYED ); NO ACTIVE FAULTS. T/S PER TSM 49-00-81-810-868-A. ACCOMPLISHED CONTINUITY CHK OF LOW OIL PRESSURE SWITCH + A/C WIRING WITH NO DEFECTS. RESISTANCE SATISFACTORY/ WITHIN SPECIFIED RANGE. AS PRECAUTIONARY R/R LOW OIL PRESSURE SWITCH IAW AMM 49-94-14. OPS CHK GOOD. MDDR CLEARED. MX-4 UPDATED. PLACARD REMOVED.

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