What was found
EICAS IAS DISAGREE ON FINAL. CAPTS IAS 8K LOWER THAN F/O AND STBY. *S/D* REPLACED L-AIR DATA COMPUTER PER MM 34-1 2-01, ACCOMPLISHED LOW RANGE LEAK TEST PER MM 34-11-00. TESTED OK FOR SERVICE.
- Difficulty date
- May 25, 2007
- Submitted
- June 20, 2007
- Operation
- Air carrier
- Aircraft
- N179UA
- Make and model
- Boeing 747422
- Aircraft serial
- 25158
- Aircraft time
- 67,885 hours, 8,458 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 3417 · Air Data Computer
- Part
- Computer
- Part number
- 4040800911
- Part serial
- UNK
- Condition
- Faulty
- Location
- Captain Adc
- Stage of operation
- AP
- 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.