What was found
LOST FLIGHT INSTRUMENTS SHORTLY AFTER TAKEOFF. FOUND THE GYRO INSTRUMENTS WOULD TUMBLE WHEN THE GEAR WAS RETRACTED AND INSTRUMENT AIR PRESSURE DROP TO NEAR ZERO. AIR PRESSURE AND INSTRUMENT OPERATION RETURNED TO NORMAL WHEN GEAR WAS EXTENDED. INSPECTION FOUND THE PLASTIC TUBING PROTRUDED INTO THE WHEELWELL FAR ENOUGH FOR THE NOSE WHEEL TO CONTACT AND OBSTRUCT IT WHEN THE GEAR WAS RETRACTED. EVIDENCE OF THE SAME CONDITION WAS NOTED ON ANOTHER AIRCRAFT MODEL V35B, S/N D9102, N-4042A.