What was found
AIR TURN BACK, AFTER TAKEOFF THE CAPT'S ADI AND THE NR 1 INS FAILED. PLACING THE PLATFORM SWITCH TO POSITION 3 MADE NO DIFFERENCE. SWAPPED NR 1 AND NR 3 INU DUE TO NR 1 FAILED. OPS CHECKED GOOD ON NR 1 PLACED NR 3 ON DMI.
- Difficulty date
- January 1, 2008
- Submitted
- January 14, 2008
- Operation
- Air carrier
- Aircraft
- N526MC
- Make and model
- Boeing 7472D7B
- Aircraft serial
- 22337
- Aircraft time
- 95,931 hours, 19,697 cycles
- System (JASC)
- 3441 · Inertial Guidance System
- Part
- Inu
- Part number
- 46300181300413
- Part serial
- 1876
- Condition
- Failed
- Location
- Nr 1
- Stage of operation
- CL
- 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.