What was found
E/E COOLING SYSTEM DIFFERENTIAL PERSSURE SWITCH FAILED FUNCTIONAL CHECK. REMOVED AND REPLACED PRESSURE SWITCH E/E COOLING SYSTEM IAW 21-58-29-004-001 AND 21-58-29-404-013. OPS CHECKED GOOD AMM 21-58-00-705174-008.
- Difficulty date
- September 14, 2025
- Submitted
- January 13, 2026
- Operation
- Air carrier
- Aircraft
- N563NC
- Make and model
- Boeing 7673BG
- Aircraft serial
- 30563
- Aircraft time
- 86,717 hours, 22,239 cycles
- System (JASC)
- 2120 · Air Distribution System
- Part
- Pressure Switch
- Condition
- No Test
- Location
- Zone 100
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.