SDR CALA2017090102950

Service difficulty report · Module · Boeing 757222

Difficulty date: September 1, 2017
Submitted: September 1, 2017
Operation: Air carrier
Aircraft: N597UA
Make and model: Boeing 757222
Aircraft serial: 28750
Aircraft time: 69,692 hours, 18,364 cycles
System (JASC): 2913 · Hydraulic Pump (Electric/Engine), Main
Part: Module
Condition: Leaking
Location: Edp Case Drain
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

LEFT HYD QTY EICAS MESSAGE, .21 INDICATED QTY. EMERGENCY DECLARED. FOUND AFT DPI LEAKING ON EDP PRESSURE CASE DRAIN FILTER MODULE. REPLACED THE AFT DPI IAW AMM 29-11-17-004-001, AND 29-11-17-404-027. MOTORED THE NR 1 ENG FOR 2 MINUTES, LEAK CHECKED GOOD, APPLIED HYD PRESSURE FROM ALL HYD SYSTEMS, LEAK CHECKED GOOD. NEW O-RINGS INSTALLED WITH NEW DPI.