The idler bellcrank (P/N 08421022) for the nose landing gear retraction linkage broke when the landing gear was selected to the up position. The pilot was unable to extend the nose gear. Upon landing, the nose gear retracted into the wheel well.

The technician discovered the idler bellcrank broke and caused the nose gear to be disconnected from the gearbox.

The submitter suspects improper rigging of the landing gear caused excessive stress on the bellcrank. He also stated that mechanics need to remember that due to the design of the landing gear system on the twin engine Cessnas, any adjustments made to any of the many components of the landing gear effects the entire system and requires a complete recheck of the landing gear rigging.

A search of the FAA Service Difficulty Reporting Program data base revealed 13 additional reports on the idler bellcrank (P/N 08421022), which is also used on the Cessna 320s.

Part total time-2,075 hours.