EMER FORCED OFF ARPT LNDG.

Narrative

LCL INSTRUCTIONAL DUAL FLT; RADIO INTERMITTENT FAILURE DURING ILS PRACTICE APCHS; EVENTUALLY RADIO FAILED -- RETURN TO ARPT OF DEP AND ORIGINATION -- (1X) PRACTICED FEATHERING L ENG -- RE-START UNABLE SEVERAL TRIES -- INSTRUCTOR TOOK CTLS TO ENTER DOWNWIND RWY 27 -- WHILE MEI SET UP PATTERN I STARTED TO PUMP GEAR DOWN MANUALLY. ON BASE 0 GREEN INDICATOR LIGHTS -- CONTINUED PUMPING GEAR HANDLE -- SHORT FINAL FOR RWY PULLED CO2 BOTTLE; STILL NO 3 GREEN INDICATIONS -- I CONTINUED PUMPING HANDLE; MID RWY; NO LIGHTS; MY INSTRUCTOR ADDS PWR TO R ENG AFTER UNABLE TO SEE GEAR DOWN LIGHTS ON. PAST RWY 0 CLB POSSIBLE ON 1 ENG. L TURN TO LAND WITH ROWS IN FIELD -- FORCED LNDG IN MUDDY SOFT FIELD -- SOME DAMAGE TO GEAR AND PROP ON R ENG. NO INJURIES TO OCCUPANTS. 'HINDSIGHT' -- WITH RADIO PROBLEMS POSSIBLE ELECTRICAL PROBLEMS; EXERCISE TO FEATHER L ENG SHOULD HAVE BEEN AVOIDED; RADIO PROBLEM AND AMMETER INDICATED DISCHARGE -- 10 AMPS APPROX COULD INDICATE ALTERNATOR FAILURE OR GENERATOR SWITCH OFF CAUSING RUNNING OFF BATTERY. ALSO; CONSIDERING TERRAIN; LNDG COULD HAVE BEEN MADE STRAIGHT AHEAD. LNDG ON RWY WAS POSSIBLE BUT WITHOUT 3 GREEN INDICATOR LIGHTS IT WAS UNCERTAIN IF GEAR WAS LOCKED AT POINT OF TOUCHDOWN. ALSO EMER CHKLIST WASN'T USED AND THERE WAS TIME TO REVIEW CHKLIST AND TIME TO REVIEW SWITCHES ON; ETC. EMPHASIS IN TRAINING ON A 'SYS PERSPECTIVE' IF PROBLEMS OCCUR WITH THE RADIO; COULD THIS BE INDICATIVE OF A LARGER PROBLEM. THIS VIEW WITH DOMINO EFFECT COULD HAVE AFFECTED DECISION TO PRACTICE 'CRITICAL ENG OUT' MANEUVER. SUPPLEMENTAL INFO FROM ACN 205000: ALL GAUGES ON THE ACFT INDICATED THAT THE ELECTRICAL SYS ON THE ACFT WAS FUNCTIONING PROPERLY. I ELECTED TO LAND IN THE FIELD SINCE; WHILE WE WERE STILL ATTEMPTING TO GET THE GEAR DOWN AND LOCKED WHILE OVER THE RWY; I HIT ACTUAL VMC TWICE; WHICH TURNED THE PLANE 30 OR 40 DEGS TO THE L. FEELING THAT IT WAS NOT SAFE TO ATTEMPT A STRAIGHT AHEAD LNDG ON THE RWY; AND ALSO WANTING TO AVOID ANY CARTWHEELING OF THE ACFT. I CUT THE PWR TO THE R ENG AND LANDED WITH THE ROWS OF THE FIELD. MY STUDENT AND I WALKED AWAY UNHARMED.