Service difficulty report · Tube · Boeing 777222

Difficulty date
February 27, 2024
Submitted
March 1, 2024
Operation
Air carrier
Aircraft
N787UA
Make and model
Boeing 777222
Aircraft serial
26939
Aircraft time
105,444 hours, 14,204 cycles
Part
Tube
Part number
51U35001
Condition
Broken
Location
Rh Eng Sensing
Stage of operation
CL
How discovered
O
Nature of condition
J, M
Precautionary procedure
A, B

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

What was found

THRUST ASSYMETRY COMP FAULT TECH SUPPORT UPDATE. MBF SHOWING MAINT MESSAGE 77-61122. USE FIM 77-11 TASK 805 TO INVESTIGATE POSSIBLE P4.95 (P5) LINE LEAKAGE. IADLM MACINNES. FOUND P 4.5 (P5) LINE LEAKING AIR. REMOVED AND REPLACED RIGHT ENGINE, AFT MOST SEGMENT OF P4.95 / P5 LINE. NO OTHER DEFECTS NOTED. OK FOR ENGINE RUN AT THIS TIME. ACCOMPLISHED POWERPLANT POWER ASSURANCE TEST 9 #2 ENGINE REF AMM TASK 71-00-00-720-803-N00. ALL PARAMATERS READ WITHIN LIMITS AS REQUIRED DURING IDLE, FLIGHT IDLE AND 1.25 EPR. AIRCRAFT OK FOR SVC.