What was found
FLYING WITH A PATIENT, TWO PILOTS & TWO MEDICS. WE WERE AWARE OF ADVISORIES FOR SEVERE TURBULENCE AT HIGHER ALTITUDES SO WE WERE AT FL260, 280 - 290KNOTS, AT ABOUT 94% POWER & NO ABNORMALITIES IN THE GAUGES & NO TURBULENCE. HAD THE MAIN GEAR DOOR LIGHTS ON & ABOUT 150 NM FROM ANCHORAGE, THE PLANE PITCHED UP, WE LOST ABOUT 40 - 50 KNOTS AIRSPEED & LOUD WINDY NOISE LIKE YOU GET WHEN THE GEAR COMES OUT OF THE WELLS. CONTINUED THE FLIGHT, AT SPEEDS LESS THAN 250 KNOTS & WHEN READY TO LAND THE GEAR CAME DOWN NORMALLY & THE MAIN DOOR LIGHTS EXTINGUISHED. FIRST OFFICER SAID HE SAW THE HYD PRESS RISE SLIGHTLY DURING THE INCIDENT. PERFORMED MULTIPLE GEAR SWINGS WITH NO DISCREPANCIES, REPLACED LT & RT GEAR UP SWITCHES. PERFORMED OVER SPEED RECOVERY LG INSPECTION IAW MM WITH NO DEFECTS NOTED. PERFORMED OPERATIONAL CHECK FLIGHT WITH SATISFACTORY RESULTS.