AN A300-600 THROTTLE MADE AN UNCOMMANDED RETARDATION TO IDLE PWR AS CLB THRUST WAS SELECTED AFTER TKOF.

Narrative

DURING THE INITIAL CLBOUT; AT APPROX 1000 FT AGL; AN UNCOMMANDED RETARDATION OF THE R THROTTLE OCCURRED. IT WAS FIRST PERCEIVED AS AN ENG FAILURE AND AN EMER WAS DECLARED AND A REQUEST WAS MADE FOR AN IMMEDIATE RETURN TO THE ARPT. CLB WAS CONTINUED TO 2000 FT AGL AND LEVELED OFF. UPON FURTHER INVESTIGATION; IT WAS DISCOVERED THAT THE THROTTLE WAS AT FLT IDLE; THE THROTTLE WAS IN MANUAL MODE AND THE ENG INDICATIONS WERE NORMAL FOR A FLT IDLE CONDITION. NO ECAM ALERTS WERE INDICATED. THE THROTTLES WERE REJOINED AND ENG RESPONDED NORMALLY. LATER THE AUTOTHROTTLES WERE ENGAGED AND ALSO OPERATED NORMALLY. UPON CONVERSATION BTWN THE CAPT AND MAINT CTL; IT WAS DECIDED THAT THE FLT WAS SAFE TO CONTINUER AND THE MAINT PROB WOULD BE ADDRESSED AT ZZZ. DISPATCH CONCURRED WITH THE CAPT AND THE DECISION WAS MADE TO CONTINUE. DISPATCH ALSO STATED THAT IT WAS LEGAL TO 'UN-DECLARE' AN EMER. THE FLT PROCEEDED WITHOUT ANY FURTHER INCIDENT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT THIS ACFT'S AUTO-STOW REVERSER SYS HAD BEEN WORKED ON JUST PRIOR TO THIS FLT. HIS ACR MAINT SUSPECT THAT A MOMENTARY REVERSE STOW COMMAND WAS GENERATED BECAUSE ENG OP CONTINUED NORMALLY TO THEIR DEST. BECAUSE HE WAS NOT LOOKING DIRECTLY AT THE ENG AS CLB THRUST WAS SELECTED; HE COULD NOT SAY IF THERE WAS A MOMENTARY AUTO REVERSE STOW ANNUNCIATION. SINCE THE ENG WAS OPERATING NORMALLY WITH INCREASED THRUST; THE DECISION WAS MADE TO CONTINUE THE FLT TO ITS ORIGINAL DEST.