What was found
AIRCRAFT WAS GROUNDED: FLIGHT AIR RETURNED TO SFO ON ACCOUNT OF ELECTRONIC AND NAVIGATION FAIL MESSAGE. NO EMERGENCY DECLARED. MAINTENANCE REPLACED #1 ADIRU IAW AMM 34-12-34. OPS CHECKS GOOD.
- Difficulty date
- August 29, 2019
- Submitted
- September 2, 2019
- Operation
- Air carrier
- Aircraft
- N920US
- Make and model
- Airbus A321231
- Aircraft serial
- 6490
- Aircraft time
- 16,326 hours, 6,294 cycles
- System (JASC)
- 3441 · Inertial Guidance System
- Part
- Adiru
- Part number
- 46502003030316
- Part serial
- 0018860
- Condition
- Failed
- Location
- Nr 1
- Part time
- 16,332 hours, 6,296 cycles
- 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.