What was found
AFTER TAKEOFF, THE NR 1 AND NR 3 INS FAILED. CREW FOLLOWED COCKPIT OPERATING MANUAL AND RETURNED TO NRT. MAINTENANCE REPLACED NR 1 CADC AND PERFORMED BITE AND LEAK CHECK. SYSTEM CHECKED NORMAL. AIRCRAFT RETURNED TO SERVICE.
- Difficulty date
- March 4, 1995
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N601US
- Make and model
- Boeing 747151
- Aircraft serial
- 19778
- System (JASC)
- 3417 · Air Data Computer
- Part
- Cadc
- Part number
- 19039253
- Condition
- Malfunctioned
- Location
- E/E Bay
- Part time
- 41,402 hours
- Stage of operation
- TO
- Nature of condition
- J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.