Service difficulty report · Module · Boeing 757251

Difficulty date
October 7, 2019
Submitted
October 9, 2019
Operation
Air carrier
Aircraft
N557NW
Make and model
Boeing 757251
Aircraft serial
33393
Aircraft time
50,869 hours, 22,137 cycles
Part
Module
Condition
Leaking
Location
Flap/Slats
Stage of operation
CR
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

DIVERTED DUE TO LOSS OF LT HYDRAULIC FLUID. FOUND LEAKS AT FLAP/SLAT DEPRESSURIZATION MODULE AND LT EDP. REPLACED DAMAGED SEAL AT FLAP/SLAT DEPRESSURIZATION MODULE AND LT EDP. R & R LT ACMP AND CASE DRAIN FILTER, LT RTN FILTER MODULE, AND PTU AS PRECAUTIONARY. LEAK CK AND OPS CK GOOD.