Service difficulty report · Tube · Boeing 777222

Difficulty date
January 6, 2024
Submitted
January 10, 2024
Operation
Air carrier
Aircraft
N774UA
Make and model
Boeing 777222
Aircraft serial
26936
Aircraft time
100,940 hours, 18,880 cycles
Part
Tube
Part number
51U31001
Condition
Cracked
Location
Lh Eng
Stage of operation
TO
How discovered
O
Nature of condition
J
Precautionary procedure
C

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

What was found

ENG EEC MODE L ON TAKE OFF ,LOW SPEED RTO. ''ENG EEC MODE L'' STATUS MSG ERASED DURING MAINT EVALUATION- ASSOCIATED FAULT ''EPR P4.95 MANIFOLD...'' NEEDS FURTHER T-S. ADD FAULT: 77-61121 ADD PICS FOR: "ENG PRESS RATIO (EPR) (L ENG) P4.95 MANIFOLD IS BLOCKED OR LEAKING" FAULT... ADD FAULT: 77-61121 *DM* ITEM HAS EXTENSIVE HISTORY DATING BACK TO NOV - MULT RESETS AND P2T2 PROBE CHNGD - RECOMMEND FIM 77-11 TASK 805 FOR T/S - ACP MEL REQUIREMENTS. LOW SPEED RTO CHECKED TIRES AND BRAKES PRECAUTIONARY. NO DEFECTS NOTED. PLACED ON MEL PER FIM ADDING EEC M/E 27-7322-9-0001 IF NEEDED. AMM TASK 73-21-00-200-802-N00. & EPR P4.95 SYSTEM LEAK TEST, AMM TASK 77-11-01-710-801-N00 DO NOT CHANGE THE EEC BEFORE VERIFING NO CRACKED OR LEAKING LINES-COMMON. IADLM FOUND LINE CRACKED FOR 4.95 SENSE LINE. IPC 77-11-01-02 ITEM 60. PART # 51U310-01. M&E # 27-7100-3-0712. NIS IN DEN REPLACED N4.95 SENSE LINE IAW MM 77-11-02-420-802-N01. OPS CHECK GOOD NO DEFECTS NOTED.