What was found
FLIGHT 0014, PHL-FRA: AFTER APPROXIMATELY 1 HOUR OF FLIGHT, LEFT, RIGHT AND CENTER IRU'S SHOW EXCESSIVE DRIFT (16 NM). FLIGHT RETURNED TO PHL. MAINTENANCE REPLACED THE CENTER AND RIGHT IRU'S. LEFT IRU CHECKED NORMAL.
- Difficulty date
- August 26, 2006
- Submitted
- August 28, 2006
- Operation
- Air carrier
- Aircraft
- N649US
- Make and model
- Boeing 767201
- Aircraft serial
- 23901
- Aircraft time
- 76,481 hours, 15,537 cycles
- System (JASC)
- 3441 · Inertial Guidance System
- Part
- Iru
- Part number
- HG1050AD04
- Part serial
- 2524
- Condition
- Failed
- Location
- Cockpit
- Part time
- 48,620 hours, 26,333 cycles
- Stage of operation
- CR
- 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.