A B727-200 IS UNABLE TO RETRACT THE INBOARD FLAPS AFTER TKOF FROM DCA. FLC DECLARES EMER AND LANDS AT IAD.

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TIME: XA57Z. FREQ/ALT: 133.9. FL200. ATC FACILITY: ZDC. LOCATION: SE OF OTT. BRIEFED FLT AS FO'S LEG. AFTER TKOF NOTED INBOARD FLAPS REMAINED AT 2 DEGS DOWN AFTER ACFT CLEANUP. WE MAINTAINED 225 KIAS AS WE CLRED NOISE SENSITIVE AND HVY AIR TFC AREAS. CLBING THROUGH 12000 FT MSL WERE FURTHER CLRED TO FL190 HDG 150 DEGS TO INTERCEPT J61 S OF OTT. I INSTRUCTED FO FLY HANDLE RADIOS FE AND WILL WORK JAMMED TRAILING EDGE FLAP PROB DECLARE AN EMER AND TELL CTR WE WANT LOWER 15000 FT NOW 10000 FT MSL ASAP. AT THIS TIME ATC RECLRED US TO INTERCEPT J61 HDG 210 DEGS AND CLB TO FL230. FO DECLARED EMER LEVELED FL200 AND RECEIVED CLRNC TO 15000 FT EXPECT 10000 FT MSL SHORTLY. WX WAS NIGHT CLR EXCELLENT VISIBILITY SMOOTH AIR. FE AND I WORKED TRAILING EDGE FLAP JAMMED EMER CHKLIST. FE PULLED AIRPHONE BREAKER. I BRIEFED FLT ATTENDANT #1 ON TEST ITEMS. ALL CHKLIST COMPLETED. ACFT GROSS WT 152400 LBS. LNDG TOUCHDOWN SPD 172 KIAS; WINDS 340 DEGS AT 14 KTS; LNDG RWY 1R. ROLLED TO END OF RWY AND EXITED RWY ONTO HOLDING PAD. CFR EQUIP SURROUNDED ACFT FOR BRIEF INSPECTION. CFR SUPVR SAID YOU LOOK GOOD SO WE TERMINATED THE EMER AND PROCEEDED TO THE CHALKS WITH 1 CFR CREW AS A PRECAUTION. PAX DEBRIEFED IN THE CHALKS AND RELEASED TO TERMINAL VIA PAX MOVERS TO GATES AND AGENTS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT THE FLAPS STOPPED AT 2 DEGS DURING RETRACTION AFTER LIFTOFF. HE AND THE SO WORKED ON GETTING THE INBOARD FLAPS ALL THE WAY UP; BUT TO NO SUCCESS. ALL OTHER FLAPS RETRACTED; INCLUDING THE LEADING EDGE DEVICES. THEY CLBED TO A HIGH ALT TO AVOID OTHER TFC WHILE WORKING ON THE FLAP PROB. AFTER DETERMINING THE FLAPS COULDN'T BE RETRACTED; AN EMER WAS DECLARED TO LAND AT IAD. FLC PLANNED WELL THE ABNORMAL APCH AND LNDG. ACFT TOUCHDOWN SPD WAS CLOSE TO 172 KTS; SO IT WAS ALLOWED TO ROLL TO THE END OF THE RWY. AFTER INSPECTION BY CFR; IT WAS DETERMINED THAT THE TIRES HAD NOT BUILT UP EXCESSIVE HEAT; AND THE ACFT WAS ALLOWED TO TAXI TO THE GATE. THE FLAPS WERE PREVENTED FROM RETRACTING BY A TRIPPED CIRCUIT BREAKER. ON THE GND; THE CIRCUIT BREAKER WAS RESET AND A WIRE WAS CHKED. THE WIRE WENT TO AN ELECTRIC CONNECTOR WHICH WAS DISCONNECTED AND THEN RECONNECTED. THEN THE FLAPS WORKED PROPERLY. THAT'S THE ONLY MAINT THAT WAS PERFORMED; BUT THAT'S ALL THAT WAS NEEDED FOR THE FLAPS TO WORK PROPERLY. SUPPLEMENTAL INFO FROM ACN 364089: PERFORMED TRAILING EDGE FLAP JAMMED CHKLIST WHILE BURNING DOWN FUEL TO MAX LNDG WT. DIVERTED TO IAD FOR LONGER RWY LENGTH. LANDED SAFELY.