Service difficulty report · Symbol Generator · Boeing 737322

Difficulty date
May 7, 2002
Submitted
May 22, 2002
Operation
Air carrier
Aircraft
N395UA
Make and model
Boeing 737322
Aircraft serial
24670
Aircraft time
35,155 hours, 24,829 cycles
Engine
Ge CFM56*
Part
Symbol Generator
Part number
6229436101
Condition
Failed
Location
E/E Bay
Stage of operation
TO
How discovered
O
Nature of condition
I
Precautionary procedure
C

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

What was found

ABORTED TAKEOFF AT 100 KNOTS AFTER CAPTAINS ELECTRONIC ATTITUDE DIRECTION INDICATOR WENT BLANK. MAINTENANCE CONDUCTED AN EFIS BITE TEST VIA THE DFCS, RESULTING THE REPLACEMENT OF THE NR 1 SYMBOL GENERATOR MR41824-281. COMPONENT SHOP FOUND THAT THE UNIT HAD A CONFIRMED FAILURE OF THE A8U36 EEPROM DEVICE. ADDITIONAL DEVICES REPLACED AS A PRECAUTION.