What was found
ALT DISAGREE EICAS MSG LEVEL FLIGHT AT FL280 GREATER THAN 200' L 27760 R/R CAPT LH AIR DATA COMPUTER IAW AMM 34-12-01/401 AND IPC 25-71-31-01A. OPS CHECK GOOD</P>)
- Difficulty date
- February 22, 2026
- Submitted
- February 23, 2026
- Operation
- Air carrier
- Aircraft
- N493MC
- Make and model
- Boeing 74747UF
- Aircraft serial
- 29254
- Aircraft time
- 109,743 hours, 17,727 cycles
- System (JASC)
- 3417 · Air Data Computer
- Part
- Adc
- Part number
- 4040800911
- Part serial
- 90112559
- Condition
- Faulted
- Location
- Left
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.