What was found
F/O DCP ALTIMETER ADJUSTMENT KNOB INTERMITTENTLY ADJUST MORE THAN COMMANDED. GROUNDED - YES. PERFORMED DCP ALTIMETER ADJUSTMENT KNOB TEST PER B737-800 AMM 22-11-34. COULD NOT DUPLICATE FAULT. OPS CHECK OK.
- Difficulty date
- June 19, 2021
- Submitted
- June 21, 2021
- Operation
- Air carrier
- Aircraft
- N559AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35178
- Aircraft time
- 52,655 hours, 15,541 cycles
- System (JASC)
- 2210 · Autopilot System
- Part
- Knob
- Condition
- Intermittent
- Location
- Altimeter
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.