What was found
AIRCRAFT WAS NOT GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO SEA DUE TO THE FLIGHT CREW REPORTING THAT INFLIGHT AT GEAR RETRACTION STANDBY ATTITUDE ISIS (INTERGRATED STANDBY INSTRUMENT SYSTEM) WENT TO OUT OF ORDER. THE AIRCRAFT LANDED SAFELY AT SEA WITHOUT FURTHER INCIDENT. MAINTENANCE ACCOMPLISHED TSM 34-22-00-810-807-A, RESET ISIS INDICATOR AND FAULT CLEARED. MAINTENANCE ACCOMPLISHED BITE TEST AMM 34-22-25 WITH NO ISSUED NOTED.