C182 FLT CREW HAS ENG FAILURE IN THE VICINITY OF SDA AND MAKES AN OFF FIELD LNDG.

Narrative

PIC AND I WERE APCHING LINCOLN; NE; WHICH WAS THE LAST LEG OF THE FLT FOR THE DAY. WE WERE APPROX 2 HRS AND 45 MINS INTO THE FLT APCHING SHENANDOAH; IA; WHEN OUR ENG FAILED. AT THE TIME; PIC WAS NAVING; LOCATING OUR EXACT POS OFF LCL VOR'S AND I WAS HOLDING A HEADING FOR PIC WHILE HE NAVED. THE PLANE'S NAV EQUIP WAS ON THE LOWER L SIDE AND CONSISTED OF 2 VOR'S; 2 COMS; AND A XPONDER. I IMMEDIATELY ANNOUNCED THAT WE JUST HAD LOST OUR ENG. I THEN INCREASED ANGLE OF ATTACK TO BEST GLIDE AT 85 KTS AND THEN WENT TO FLOW CHKS. THESE FLOW CHKS CONSISTED OF INCREASING MIXTURES RICH; APPLYING CARB HEAT; AND SWITCHING THE FUEL SELECTOR FROM BOTH TO L SIDE. THE ENG FAILED TO RESTART; AND WE BOTH SPOTTED SHENANDOAH AT 12 O'CLOCK POS; ROUGHLY 4-5 MI. OUR ALT WAS ROUGHLY 6700 FT. WE BOTH AGREED TO TRY TO MAKE THE FIELD. PIC WAS BUSY WITH BOTH HANDS; TRYING TO COMPLETE RESTART FLOWS; SO I CONCENTRATED ON THE FLT CTLS IN ORDER TO REDUCE WORKLOAD. WITH THAT IN MIND; I KEPT WITH THE GLIDE DOWN TO THE ARPT. IT DIDN'T TAKE LONG TO REALIZE THAT WE WEREN'T GOING TO BE ABLE TO MAKE THE RWY; BUT WE DIDN'T STOP TRYING. IT HAPPENED SO FAST THAT IT'S HARD TO REMEMBER ALL THE INTRICATE DETAILS. WE ENDED UP LNDG INTO A DARK FIELD; WHICH I NOW KNOW WAS A CORNFIELD. DSNDING DOWN INTO GND EFFECT; I NOTICED PWR LINES STRAIGHT AHEAD AND I REMEMBER PIC STILL TRYING TO RESTART THE ENG. I KNEW WE WANTED TO HIT THE GND AT THE SLOWEST AIRSPD POSSIBLE. BEFORE WE HIT; I LOOKED FAR L TO THE PLT'S SIDE AND NOTICED WE WERE AT 40 KTS AND FLYING. SHORTLY AFTER THAT; WE TOUCHED DOWN AND CAME TO AN ABRUPT STOP. I WAS KNOCKED OUT; BUT I WAS VERY MUCH IN SHOCK; AS WAS PIC. WHEN THE ENG FAILED; IT GAVE NEITHER WARNING NOR MUCH ENG ROUGHNESS. IT SIMPLY POPPED LOUDLY TWICE AND WENT STRAIGHT TO WIND-MILLING. I COULDN'T REALLY RECALL LOOKING AT THE TACHOMETER BECAUSE COCKPIT LIGHTING DIDN'T LIGHT IT. I WISH I HAD MORE INFO; BUT IT HAPPENED SO QUICKLY IT'S DIFFICULT TO RECALL SMALL DETAILS. I WAS NOT THE PIC; HOWEVER; I DID LAND THE AIRPLANE IN ZZZ; US. I WISH I HAD MORE INFO ABOUT THE FLT PLANNING OF THE FLT. I LANDED THE AIRPLANE BECAUSE IT WAS THE ONLY THING I COULD HELP PIC WITH. IT IS A SINGLE PLT AIRPLANE; BUT I ALSO WAS A QUALIFIED PLT. IN A SIT LIKE THIS; THERE WAS NOTHING MORE THAN WE COULD DO; BUT HOPE FOR THE BEST.