Narrative:

Gear handle was selected down, and before landing checklist was completed. However, there was no aural or visual indication of gear operation. Annunciators were tested to verify illumination. I asked sic to advise tower of a possible gear problem, and requested delay vectors to complete checklist procedures. I attempted to recycle gear. I asked the sic to pull the checklist for manual gear extension. We completed the manual gear checklist/procedures with sic pumping. I then tried to pump. A total of +200 pumps were made. Gear did not respond. I then had sic brief passenger, and I attempted to do some flight maneuvers to see if gear would respond. It did not. I then had the sic pull out the emergency pneumatic extension checklist. We completed the checklist/procedure. Gear then indicated left main down and locked, nose down and locked, no light on right main gear. Again, flight maneuvers were used to try and lock the right main gear. I and the sic then advised/requested 'fly-bys' from the tower. After 2 passes, tower advised that all 3 gear appeared down. I then advised tower of our landing intentions and requested the emergency equipment. I then briefed sic on landing procedures I would use, and we briefed the passenger of emergency and evacuate/evacuation procedures. Tower cleared us to land with the equipment in place (runway 36R). We landed as soft and slow as allowable, loft main first, followed by nose and right main gear. The aircraft rolled out briefly before the right gear main gear collapsed. Both engines were shut down prior to propeller contact on right side. Aircraft then proceeded to slip/skid to the right. I used left brake and nosewheel steering to hold the aircraft. The aircraft slid off the runway onto the taxiway, past hold short lines.

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Original NASA ASRS Text

Title: A PA42 CHEYENNE III WAS UNABLE TO EXTEND LNDG GEAR WITH NORMAL HYD SYS. GEAR WOULD NOT EXTEND WITH MANUAL SYS, EXTENDED GEAR WITH EMER PNEUMATIC SYS. ON LNDG, R MAIN GEAR COLLAPSED.

Narrative: GEAR HANDLE WAS SELECTED DOWN, AND BEFORE LNDG CHKLIST WAS COMPLETED. HOWEVER, THERE WAS NO AURAL OR VISUAL INDICATION OF GEAR OP. ANNUNCIATORS WERE TESTED TO VERIFY ILLUMINATION. I ASKED SIC TO ADVISE TWR OF A POSSIBLE GEAR PROB, AND REQUESTED DELAY VECTORS TO COMPLETE CHKLIST PROCS. I ATTEMPTED TO RECYCLE GEAR. I ASKED THE SIC TO PULL THE CHKLIST FOR MANUAL GEAR EXTENSION. WE COMPLETED THE MANUAL GEAR CHKLIST/PROCS WITH SIC PUMPING. I THEN TRIED TO PUMP. A TOTAL OF +200 PUMPS WERE MADE. GEAR DID NOT RESPOND. I THEN HAD SIC BRIEF PAX, AND I ATTEMPTED TO DO SOME FLT MANEUVERS TO SEE IF GEAR WOULD RESPOND. IT DID NOT. I THEN HAD THE SIC PULL OUT THE EMER PNEUMATIC EXTENSION CHKLIST. WE COMPLETED THE CHKLIST/PROC. GEAR THEN INDICATED L MAIN DOWN AND LOCKED, NOSE DOWN AND LOCKED, NO LIGHT ON R MAIN GEAR. AGAIN, FLT MANEUVERS WERE USED TO TRY AND LOCK THE R MAIN GEAR. I AND THE SIC THEN ADVISED/REQUESTED 'FLY-BYS' FROM THE TWR. AFTER 2 PASSES, TWR ADVISED THAT ALL 3 GEAR APPEARED DOWN. I THEN ADVISED TWR OF OUR LNDG INTENTIONS AND REQUESTED THE EMER EQUIP. I THEN BRIEFED SIC ON LNDG PROCS I WOULD USE, AND WE BRIEFED THE PAX OF EMER AND EVAC PROCS. TWR CLRED US TO LAND WITH THE EQUIP IN PLACE (RWY 36R). WE LANDED AS SOFT AND SLOW AS ALLOWABLE, LOFT MAIN FIRST, FOLLOWED BY NOSE AND R MAIN GEAR. THE ACFT ROLLED OUT BRIEFLY BEFORE THE R GEAR MAIN GEAR COLLAPSED. BOTH ENGS WERE SHUT DOWN PRIOR TO PROP CONTACT ON R SIDE. ACFT THEN PROCEEDED TO SLIP/SKID TO THE R. I USED L BRAKE AND NOSEWHEEL STEERING TO HOLD THE ACFT. THE ACFT SLID OFF THE RWY ONTO THE TXWY, PAST HOLD SHORT LINES.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.