Service difficulty report · Symbol Generator · Boeing 767322

Difficulty date
August 7, 2025
Submitted
August 8, 2025
Operation
Air carrier
Aircraft
N666UA
Make and model
Boeing 767322
Aircraft serial
29238
Aircraft time
91,046 hours, 19,244 cycles
Part
Symbol Generator
Part number
6229436101
Part serial
2257
Condition
Faulted
Location
Zone 100
Part time
791,039 hours, 719,243 cycles
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

SG FAIL ON FO SIDE ADI AND HSI IN FLIGHT REMOVAL AND INSTALL THE EFIS SYMBOL GENERATOR IAW TASK 34-22-01-404-006. SOFTWARE LOAD. ELECTRONIC FLIGHT INSTRUMENT SYSTEM. MAINTENANCE PRACTICES REF 34-22-00/201. REMOVED AND REPLACED RT EFIS SYMBOL GENERATOR IAW AMM 34-22-01-404-006, OPS CHECK OK. NO FURTHER DEFECTS NOTED. SOFTWARE CHECK OK,