As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON RETRACTION OF THE GEAR, THE BRAKE CALIPER FITTING P/N 754-857 OVERCENTERED INTO THE RIB CUT OUT AND THE GEAR WOULD NOT COME DOWN UPON EXTENSION. THE PILOT HAD TO 'G' LOAD THE AIRCRAFT AND EXTEND THE GEAR SIMULTANEOUSLY TO GET THE LEFT GEAR TO EXTEND. BOUNDRY LAYER RESEARCH ENGINEERING HAS APPROVED A CLEARANCE MODIFICATION TO PRECLUDE ANY FURTHER PROBLEMS WITH THE SUPER CHIEF II WING RIB REINFORCEMENT. STC SA002025E.