What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
The investigation revealed on approach to tisx airport, that ATC issued a vector of 150 degrees to allow an aircraft to overtake the SD3-60-200. The traffic was an airbus-atr. ATC then requested the SD3-60-200 to reduce airspeed. SIC asked the PIC if more flaps were required, the PIC indicated to the SIC to leave the flaps at 15 degrees for possible go-around. ATC then issued the landing clearance to the SD3-3-60-200. The SD3-3-60-200 made some s turns for spacing. However, the airbus-atr traffic remained on the runway. The PIC started a go-around maneuver. But during the go-around, the SD3-3-60-200 uncontrollably banked to the right. The left engine uncontrollably increased its power. To recover, the PIC reduced the power and maneuvered the SD3-60-200 towards the runway. During this maneuver, the stick shaker became active. The SD3-3-60-200 landed with the gear retracted. The passenger described the event as metal friction noise followed by a big bang, changing to a rolling over rocks sound until the aircraft stopped moving over the runway. PIC reported the incident to ATC.
Other facts, the landing gear warning horn will not activate with 15 degree flaps, the operator landing profiles requires 30 degrees flaps for landing.
As the FAA filed it
THE INVESTIGATION REVEALED ON APPROACH TO TISX AIRPORT, THAT ATC ISSUED A VECTOR OF 150 DEGREES TO ALLOW AN AIRCRAFT TO OVERTAKE THE SD3-60-200. THE TRAFFIC WAS AN AIRBUS-ATR. ATC THEN REQUESTED THE SD3-60-200 TO REDUCE AIRSPEED. SIC ASKED THE PIC IF MORE FLAPS WERE REQUIRED, THE PIC INDICATED TO THE SIC TO LEAVE THE FLAPS AT 15 DEGREES FOR POSSIBLE GO-AROUND. ATC THEN ISSUED THE LANDING CLEARANCE TO THE SD3-3-60-200. THE SD3-3-60-200 MADE SOME S TURNS FOR SPACING. HOWEVER, THE AIRBUS-ATR TRAFFIC REMAINED ON THE RUNWAY. THE PIC STARTED A GO-AROUND MANEUVER. BUT DURING THE GO-AROUND, THE SD3-3-60-200 UNCONTROLLABLY BANKED TO THE RIGHT. THE LEFT ENGINE UNCONTROLLABLY INCREASED ITS POWER. TO RECOVER, THE PIC REDUCED THE POWER AND MANEUVERED THE SD3-60-200 TOWARDS THE RUNWAY. DURING THIS MANEUVER, THE STICK SHAKER BECAME ACTIVE. THE SD3-3-60-200 LANDED WITH THE GEAR RETRACTED. THE PASSENGER DESCRIBED THE EVENT AS METAL FRICTION NOISE FOLLOWED BY A BIG BANG, CHANGING TO A ROLLING OVER ROCKS SOUND UNTIL THE AIRCRAFT STOPPED MOVING OVER THE RUNWAY. PIC REPORTED THE INCIDENT TO ATC.
OTHER FACTS, THE LANDING GEAR WARNING HORN WILL NOT ACTIVATE WITH 15 DEGREE FLAPS, THE OPERATOR LANDING PROFILES REQUIRES 30 DEGREES FLAPS FOR LANDING.