What was found
ETOPS SIGNIFICANT SYS - AIRSPEED INDICATOR (F-O) FLUCTUATES. ALTERNATE AD SELECTION FAILED TO CORRECT THE FAULT. R & R NR 2 MACH AIRSPEED INDICATOR, GROUND CHECKED OK IAW AMM74-13-02. OPS CHECKED GOOD.
- Difficulty date
- October 30, 2011
- Submitted
- October 31, 2011
- Operation
- Air carrier
- Aircraft
- N589HA
- Make and model
- Boeing 76733AER
- Aircraft serial
- 33422
- Aircraft time
- 35,012 hours, 6,478 cycles
- System (JASC)
- 3417 · Air Data Computer
- Part
- Indicator
- Part number
- 4039891906
- Part serial
- D2739109
- Condition
- Fluctuates
- Location
- Airspeed
- Part time
- 31,618 hours, 5,933 cycles
- 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.