Service difficulty report · Warning Message · Boeing 777222

Difficulty date
July 17, 2012
Submitted
August 24, 2012
Operation
Air carrier
Aircraft
N793UA
Make and model
Boeing 777222
Aircraft serial
26946
Aircraft time
66,475 hours, 9,546 cycles
Engine
Pwa PW4090
Part
Warning Message
Condition
False Activation
Location
Rt Engine
Stage of operation
IN
How discovered
V
Nature of condition
N
Precautionary procedure
K

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

What was found

RIGHT ENGINE CONTROL IS IN A TIME LIMITED DISPATCH CONDITION. ENGINE CONTROL SYSTEM IS OPERATING WITH REDUCED REDUNDANCY. STATUS MESSAGE 01- ACTIVE CLIMB INTERMITTENT; 2.9 START BLEED VALVE TC PROBE (R ENG, CH B) TEMPERATURE SIGNAL IS OUT OF RANGE. DB- ELECTRONIC ENGINE CONTROL (R ENG, CH B) MSG02- NOT ACTIVE DESCENT INTERMITTENT; 2.9 START BLEED VALVE TC PROBE (R ENG) TEMPERATURE SIGNAL IS OUT OF RANGE. DB- ELECTRONIC ENGINE CONTROL (R ENG, CH B) MSG03- NOT ACTIVE DESCENT INTERMITTENT; 2.9 START BLEED VALVE TC PROBE (R ENG) TEMPERATURE SIGNAL IS OUT OF RANGE. RAN FIM TASK 75-32-TASK 827 MESSAGE CLEARED. PER 'MAT' MESSAGE CLEARED WITHIN 20 SECONDS, NO FURTHER ACTION REQUIRED.