What was found
CABIN ALT AUTO EICAS MSG. C/W QRH. RETURNED TO ANC(<P>FOUND MX MSG 21234, CHECK FAIL. R/R ICU PER AMM 21-31-10 & IPC 21-31-10-01 ITEM 236, TEST PASSED. R/R DIODES M3349 & 47008 PER SWPM 20-00-00, TEST PASSED. DMI 240995 CLOSED.
- Difficulty date
- October 28, 2025
- Submitted
- October 31, 2025
- Operation
- Air carrier
- Aircraft
- N498MC
- Make and model
- Boeing 74747UF
- Aircraft serial
- 29259
- Aircraft time
- 105,870 hours, 17,042 cycles
- System (JASC)
- 2130 · Cabin Pressure Control System
- Part
- Icu
- Part number
- 7968854002
- Part serial
- 98020609
- Condition
- Faulted
- Location
- Cabin Pressure
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- J, G
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.