What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Sunday, July 21. 2019, the pilot and student scheduled a multi-engine training flight in a Beech BE-76 duchess. During the lesson the landing gear worked properly, after completing the lesson, they returned to btp. When the gear handle was placed in the down position the main landing gear indicated down but not the nose landing gear. They checked the indicator, circuit breaker and the mirror on the right engine nacelle. Nose landing gear was confirmed in the up position. They notified CTAF and returned to the practice area.
The PIC and student used the pilot operating handbook to troubleshoot the problem. When troubleshooting failed, the instructor tried cycling the gear in zero-g. staying in the practice area for two hours burning off fuel, then notified the school, airport manager and emergency responders. When notified the responders were in position they returned to btp. The PIC did a fly-by to verify the doors were closed by maintenance. A firm touchdown was performed followed by a go around, NLG doors remained closed. An emergency landing was then executed with no injuries.
During an inspection of the NLG, the tube assembly that actuates the gear doors was found to be positioned too FAR back. The link assembly had over traveled past centerline backwards causing the NLG doors to lock in the closed position. The link assembly over traveled FAR enough to bend and split the sheet metal l-bracket structure behind it.
Inspection of the airframe logbook showed prior to this flight the aircraft recently had an issue with the main landing gear not properly deploying in flight. During troubleshooting maintenance was unable to duplicate the discrepancy for corrective action.
As the FAA filed it
SUNDAY, JULY 21. 2019, THE PILOT AND STUDENT SCHEDULED A MULTI-ENGINE TRAINING FLIGHT IN A BEECH BE-76 DUCHESS. DURING THE LESSON THE LANDING GEAR WORKED PROPERLY, AFTER COMPLETING THE LESSON, THEY RETURNED TO BTP. WHEN THE GEAR HANDLE WAS PLACED IN THE DOWN POSITION THE MAIN LANDING GEAR INDICATED DOWN BUT NOT THE NOSE LANDING GEAR. THEY CHECKED THE INDICATOR, CIRCUIT BREAKER AND THE MIRROR ON THE RIGHT ENGINE NACELLE. NOSE LANDING GEAR WAS CONFIRMED IN THE UP POSITION. THEY NOTIFIED CTAF AND RETURNED TO THE PRACTICE AREA.
THE PIC AND STUDENT USED THE PILOT OPERATING HANDBOOK TO TROUBLESHOOT THE PROBLEM. WHEN TROUBLESHOOTING FAILED, THE INSTRUCTOR TRIED CYCLING THE GEAR IN ZERO-G. STAYING IN THE PRACTICE AREA FOR TWO HOURS BURNING OFF FUEL, THEN NOTIFIED THE SCHOOL, AIRPORT MANAGER AND EMERGENCY RESPONDERS. WHEN NOTIFIED THE RESPONDERS WERE IN POSITION THEY RETURNED TO BTP. THE PIC DID A FLY-BY TO VERIFY THE DOORS WERE CLOSED BY MAINTENANCE. A FIRM TOUCHDOWN WAS PERFORMED FOLLOWED BY A GO AROUND, NLG DOORS REMAINED CLOSED. AN EMERGENCY LANDING WAS THEN EXECUTED WITH NO INJURIES.
DURING AN INSPECTION OF THE NLG, THE TUBE ASSEMBLY THAT ACTUATES THE GEAR DOORS WAS FOUND TO BE POSITIONED TOO FAR BACK. THE LINK ASSEMBLY HAD OVER TRAVELED PAST CENTERLINE BACKWARDS CAUSING THE NLG DOORS TO LOCK IN THE CLOSED POSITION. THE LINK ASSEMBLY OVER TRAVELED FAR ENOUGH TO BEND AND SPLIT THE SHEET METAL L-BRACKET STRUCTURE BEHIND IT.
INSPECTION OF THE AIRFRAME LOGBOOK SHOWED PRIOR TO THIS FLIGHT THE AIRCRAFT RECENTLY HAD AN ISSUE WITH THE MAIN LANDING GEAR NOT PROPERLY DEPLOYING IN FLIGHT. DURING TROUBLESHOOTING MAINTENANCE WAS UNABLE TO DUPLICATE THE DISCREPANCY FOR CORRECTIVE ACTION.