Service difficulty report · Transfer Tube · Boeing 7378

Difficulty date
December 1, 2025
Submitted
December 4, 2025
Operation
Air carrier
Aircraft
N37342
Make and model
Boeing 7378
Aircraft serial
67606
Aircraft time
6,411 hours, 2,185 cycles
Part
Transfer Tube
Condition
Unsecure
Location
Nr 1 Hyd Pump
Stage of operation
DE
How discovered
O
Nature of condition
K, J
Precautionary procedure
A

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

What was found

FLT CREW REPORTS HYD SYS A LOW & DROPPING WITH ENG NR 1 PUMP LOW PRESSURE. FOUND TRANSFER TUBE PLUG BACKED OUT ON NR 1 EDP DUE TO UNSECURED SAFETY WIRE. TORQUED TRANSFER TUBE PLUG IAW CMM 849589 29-10-61. PERFORMED IDLE RUN, LEAK CKD GOOD. PACKING WAS FOUND DAMAGED AS WELL. R & R PACKING OF E1 EDP TRANSFER PLUG UNDER CMM 849589 29-10-61.

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