What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS WHEN GEAR HANDLE SELECTED UP, HYD SYSTEM LO PRESS MASTER CAUTION LIGHT ON 6 PACK ILLUMINATED BRIEFLY THEN EXTINGUISHED. GEAR RETRACTED NORMALLY. MAINTENANCE REMOVED AND REPLACED THE #1 EDP IAW AMM 29-11-11-000-801-001. REMOVED/LOOSENED 2 LOWER PRESSURE LINE CLAMPS @ FAN CASE BEHIND IDG & STARTER IAW SUBTASK 020-004-101, STEP 5 . REMOVED L/G TRANSFER VALVE IAW AMM 32-31-71-020-801. ACCOMPLISHED ALL REQUIRED OPS AND LEAK CHECKS, SYSTEM OPS CHECKS NORMAL. (SEE SDR # AALA201907319010)