What was found
AFTER TAKEOFF, RAISED GEAR HANDLE TO UP. RECEIVED A GEAR DOORS EICAS AND DOORS LIGHT. COMPLED WITH QRH. NO OTHER ASSOCIATED PROBLEMS. PERFORMED B757 FIM 32-09 FT804, PSEU BITE TEST, NO HISTORY FAULTS STORED OR CURRENT FAULTS PRESENT AT THIS TIME. FAULT IS NOT PRESENT ON EICAS AT THIS TIME. SUSPECT HYD LEAK ON RT GEAR WAS REASON FOR GEAR DOORS EICAS MESSAGE. TEMP INSTALLED 3 FLEX HYD LINES IN PLACE OF RIGID LINES IN ORDER TO CONTINUE T/S OTHER DISCREPANCIES. BLED THE TEMP INSTALLED LINES GOING TO THE TRUCK POSITION ACTUATOR. ERS 20-00566 IS SUBMITTED FOR APPROVAL TO USE THE 3 HYD FLEX LINES FOR REPAIR OF LEAKING RIGID LINE ON RT MLG. AWAITING RESPONSE. TEMP FLEX LINE INSTALLED FOR RT GEAR TILT ACTUATOR OK PER E.A. F-2902-T0352405 COMPLIED WITH INSTALLATION OF 3 EA HYD FLEX LINES, P/N 171141-6CR-0360, 171141-6CR-0120, AND 171141-6CR-0300, WITH 2 UNIONS MS21902-6J, IN PLACE OF RIGID LINE, P/N 271N6611-1020, ON RT MLG REF EA F-2902-T0352405 PT 1 AND B757 AMM 20-10-09-8. LEAK CHECK GOOD AT THIS TIME.