SDR 2002F00132

Service difficulty report · Adc · Boeing 747230B

Difficulty date
January 21, 2002
Submitted
February 12, 2002
Operation
Air carrier
Aircraft
N743SA
Make and model
Boeing 747230B
Aircraft serial
22671
Part
Adc
Condition
Faulty
Location
Nr 1
Stage of operation
CR
How discovered
O
Nature of condition
F, J
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

IN CRZ WITH A/P AND AUTO THROTTLE ENGAGED A/C PITCHED UP WITH ALT HOLD DISENGAGED. BOTH F/D IS INOPERATIVE NR 1 AND 3 INS LOST WIND AND G/S INFORMATION, ALL N1 IS INOPERATIVE. N1 LIMIT INOP TAT INOP TCAS INOP NR 1 MACH IND INOPERATIVE AND NR 1 ALTIMETER WENT TO STANDBY MOD. ALL SYSTEM CAME BACK TO NORMAL OPS AFTER 10-15 MINUTES SUSPECT NR 1 CADC. REMOVED AND REPLACED NR 1 CADC AS PER MM. OPS NORMAL AS PER MM 34-12-00. (M)