Service difficulty report · Indication Sys · Boeing 75723A

Difficulty date
January 20, 2017
Submitted
January 20, 2017
Operation
Air carrier
Aircraft
N920FD
Make and model
Boeing 75723A
Aircraft serial
24289
Aircraft time
74,814 hours, 26,449 cycles
Part
Indication Sys
Condition
Malfunctioned
Location
Cockpit
Stage of operation
CR
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

SIGNIFICANT DISCREPANCY BETWEEN CAPTAIN`S AND FIRST OFFICER MINIMUM MANEUVERING SPEED INDICATORS AT 5000 FT, THERE WAS A 10KNOT DIFFERENCE, FO'S INDICATING A HIGHER MMS. THERE WAS A 10KNOT DIFFERENCE WITH THE STALL WARNING INDICATOR. AIRSPEED ON BOTH PFD'S WERE THE SAME. CARRIED OUT CADC BITE AND TEST IAW MM 34-12-00-5, NO FAULTS CARRIED OUT AOA TEST IAW MM 34-12-03-4-99 USING FPDS MX PAGE AND ALL GOOD. SWAPPED FOR TROUBLESHOOTING & RT STALL WARNING CARDS IAW MM 27-32-01-4 AND CARRIED OUT ADJ/TESTED GOOD IAW MM 27-32-00-5-99, AND NIL FAULTS STORED ON SWC'S FIM 27-32/805 CARRIED OUT AND ALL SATIS

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