What was found
E/E COOLING SYSTEM DIFFERENTIAL PERSSURE SWITCH FAILED FUNCTIONAL CHECK. REMOVED AND REPLACED PRESSURE SWITCH IAW 21-58-29-004-001 AND 21-58-29-404-013. OPS CHECK GOOD.
- Difficulty date
- August 12, 2025
- Submitted
- January 28, 2026
- Operation
- Air carrier
- Aircraft
- N563NC
- Make and model
- Boeing 7673BG
- Aircraft serial
- 30563
- Aircraft time
- 86,717 hours, 22,239 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Pressure Switch
- Condition
- No Test
- Location
- Zone 100
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.