What was found
AIRSPEED AND ALTIMETER DISAGREE. EMERGENCY DECLARED. FLIGHT RETURNED TO DEPARTURE, LANDING UNEVENTFUL. AIRCRAFT WAS GROUNDED. REMOVED AND REPLACED THE CAPTAIN`S AIR DATA MODULE. LEAK CHECK GOOD IAW AMM 34-11-00. OPS CHECKED GOOD.
- Difficulty date
- February 18, 2017
- Submitted
- February 21, 2017
- Operation
- Air carrier
- Aircraft
- N975AN
- Make and model
- Boeing 737823
- Aircraft serial
- 29549
- Aircraft time
- 46,842 hours, 19,046 cycles
- System (JASC)
- 3420 · Attitude and Direction Data System
- Part
- Air Data Module
- Part number
- C17001BA01
- Part serial
- 2693
- Condition
- Malfunctioned
- Stage of operation
- CL
- 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.