SDR HNAA2016092300291

Service difficulty report · O-Ring · Dhav DHC8102

Difficulty date: September 23, 2016
Submitted: September 23, 2016
Operation: Air carrier
Aircraft: N941HA
Make and model: Dhav DHC8102
Aircraft serial: 161
Aircraft time: 66,876 hours, 75,367 cycles
System (JASC): 2910 · Hydraulic System, Main
Part: O-Ring
Condition: Leaking
Location: Hyd System
Stage of operation: CL
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

DURING CLIMB OUT AT ABOUT 11K, BOTH NR 1 HYDRAULIC ISO AND ROLL SPOILER INBOARD CAUTION LIGHTS ILLUMINATED WITH NR 1 HYDRAULIC QUANTITY RAPIDLY DROPPING TO .7 QUARTS. HYDRAULIC PRESSURE REMAINED AT 3000. NSPECTED AND FOUND PRESSURE FITTING ON NR 1 EDHP LOOSE AND LEAKING. REMOVED AND REPLACED THE O-RING AND INSPECTED CASE DRAIN HYDRAULIC FILTER. NO CONTAMINATION FOUND. SERVICED NR 1 HYDRAULIC QUANTITY . GROUND RAN GOOD. LEAKED CHECKED GOOD.