What was found
BOTH ALTIMETERS ALTERNATED BETWEEN ALT AND NORMAL . AIRCRAFT DIVERTED INTO DEN. AIRCRAFT WAS GROUNDED BY MAINTENANCE. MAINTENANCE REPLACED CENTER DCU PER AMM 34-22-11. OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.
- Difficulty date
- December 29, 2022
- Submitted
- January 3, 2023
- Operation
- Air carrier
- Make and model
- Boeing 767338
- Aircraft serial
- 25575
- Aircraft time
- 94,841 hours, 32,040 cycles
- System (JASC)
- 3416 · Altimeter, Barometric/Encoder
- Part
- Control Unit
- Part number
- 9B840325
- Part serial
- 54439
- Condition
- Faulted
- Location
- Altmeters
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.