20230331005089A

Accident · Substantial damage

FAA accident report · Diamond Aircraft Ind DA 42 NG · Leesburg, FL · March 31, 2023

Date
March 31, 2023 · 16:48 local
Place
Leesburg, FL
Airport
Leesburg
Phase of flight
Landing: Touchdown
Operating rules
Pilot school (Part 141)
Operator
NX4S
Damage
Substantial damage
Aircraft
N306ER
NTSB investigation
NTSBERA23LA177
Reported as
Diamond Aircraft Ind DA 42 NG
Reported engine
AUSTRO E4 series
People aboard
2
Fatal injuries
0
Other injuries
0
Pilot’s certificates
Commercial pilot, flight instructor, private pilot
Pilot’s flight hours
1,322 total273 in this make and model227 in the last 90 days

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

Instructor/pic: my student and I were on an instructional flight at Leesburg, FL airport (klee) on Friday March 31, 2023 at 1648 local time on N306ER, and were involved in a porpoised landing resulting in a loss of control while practicing a short field landing maneuver. While enroute to Leesburg, we both listened to the ATIS which provided the winds of 150 at 11 gusting to 17 knots. Both my student and I had discussed during the arrival briefing that we would add half of the gust factor to our normal approach speed. Normal approach speed for the weight of the airplane that day is 84 knots, due to the gust factor we planned to add 3 knots to that speed which meant we would be maintaining 87 knots on final. The student was instructed to demonstrate a short field landing. On the first attempt, the airplane got too slow which prompted me to take the flight controls and execute a go around. Using a positive three way exchange of flight controls, I gave controls back to the student when it was safe to do so. The second attempt was for another short field landing, floated long and then made a full stop and taxied back to the runway. On the ground I told the student that we would do a normal takeoff and another short field landing. On takeoff, we practiced engine failure after liftoff, which went well, then I said that the student can have both engines again. On the downwind, abeam his point, the student extended the gear to prepare for a short field landing. Tower had cleared us for the option. The control tower reported the winds at 150 degrees at 11 knots and no gusts however I felt as though there was some gusting winds taking place and informed the student to add the gust factor. On final, as the airplane was descending I noticed that it was descending rapidly and advised the student to check airspeed and add power to correct. The student added power but took it out again as we descended below 100 feet and the plane began to sink rapidly. During the flare, I felt the nose wheel touch the runway first which prompted me to take the flight controls to add full power and execute a go around. However, the nose dropped and the plane began to porpoise down the runway while the stall warning was sounding. As the airplane porpoised, I attempted to keep the nose level to regain lift under the wings since the stall warning was sounding. The airplane bounced about 5 or 6 times before coming to rest about half way down the runway. After coming to a full stop I immediately secured the airplane by turning off the engine masters, the electric master, and shutting off the fuel selectors and asked if the student was physically okay, to which he replied yes. After exiting the aircraft, the privacy data omitted flight supervisor was called, and the FBO personnel transported us back to the FBO office.

Student: after having completed one go around and two landings, we came in for another approach practicing short field landing. Approach was a bit steep and fast due to gusty conditions. Upon wheels touching the ground, the aircraft had slowed to around 74 knots. After the wheels (do not remember if the main gear or all three gears) touched, the aircraft bounced. Instructor called out "go around" and stated "I have flight controls", then student removed hands from control stick. Once a go around was initiated the wings had no lift (heard stall warning) which in turn made the bounce turn into an accelerated porpoise. After porpoising 2-3 times the front canopy became unlatched. As I was no longer on the controls, to prevent getting hit by prop debris, I held down the canopy and held on to my seatbelt. At around 5-6 bounces the plane had one last bounce and veered off to the right side of runway 13 at Leesburg international airport.

As the FAA filed it

INSTRUCTOR/PIC: MY STUDENT AND I WERE ON AN INSTRUCTIONAL FLIGHT AT LEESBURG, FL AIRPORT (KLEE) ON FRIDAY MARCH 31, 2023 AT 1648 LOCAL TIME ON N306ER, AND WERE INVOLVED IN A PORPOISED LANDING RESULTING IN A LOSS OF CONTROL WHILE PRACTICING A SHORT FIELD LANDING MANEUVER. WHILE ENROUTE TO LEESBURG, WE BOTH LISTENED TO THE ATIS WHICH PROVIDED THE WINDS OF 150 AT 11 GUSTING TO 17 KNOTS. BOTH MY STUDENT AND I HAD DISCUSSED DURING THE ARRIVAL BRIEFING THAT WE WOULD ADD HALF OF THE GUST FACTOR TO OUR NORMAL APPROACH SPEED. NORMAL APPROACH SPEED FOR THE WEIGHT OF THE AIRPLANE THAT DAY IS 84 KNOTS, DUE TO THE GUST FACTOR WE PLANNED TO ADD 3 KNOTS TO THAT SPEED WHICH MEANT WE WOULD BE MAINTAINING 87 KNOTS ON FINAL. THE STUDENT WAS INSTRUCTED TO DEMONSTRATE A SHORT FIELD LANDING. ON THE FIRST ATTEMPT, THE AIRPLANE GOT TOO SLOW WHICH PROMPTED ME TO TAKE THE FLIGHT CONTROLS AND EXECUTE A GO AROUND. USING A POSITIVE THREE WAY EXCHANGE OF FLIGHT CONTROLS, I GAVE CONTROLS BACK TO THE STUDENT WHEN IT WAS SAFE TO DO SO. THE SECOND ATTEMPT WAS FOR ANOTHER SHORT FIELD LANDING, FLOATED LONG AND THEN MADE A FULL STOP AND TAXIED BACK TO THE RUNWAY. ON THE GROUND I TOLD THE STUDENT THAT WE WOULD DO A NORMAL TAKEOFF AND ANOTHER SHORT FIELD LANDING. ON TAKEOFF, WE PRACTICED ENGINE FAILURE AFTER LIFTOFF, WHICH WENT WELL, THEN I SAID THAT THE STUDENT CAN HAVE BOTH ENGINES AGAIN. ON THE DOWNWIND, ABEAM HIS POINT, THE STUDENT EXTENDED THE GEAR TO PREPARE FOR A SHORT FIELD LANDING. TOWER HAD CLEARED US FOR THE OPTION. THE CONTROL TOWER REPORTED THE WINDS AT 150 DEGREES AT 11 KNOTS AND NO GUSTS HOWEVER I FELT AS THOUGH THERE WAS SOME GUSTING WINDS TAKING PLACE AND INFORMED THE STUDENT TO ADD THE GUST FACTOR. ON FINAL, AS THE AIRPLANE WAS DESCENDING I NOTICED THAT IT WAS DESCENDING RAPIDLY AND ADVISED THE STUDENT TO CHECK AIRSPEED AND ADD POWER TO CORRECT. THE STUDENT ADDED POWER BUT TOOK IT OUT AGAIN AS WE DESCENDED BELOW 100 FEET AND THE PLANE BEGAN TO SINK RAPIDLY. DURING THE FLARE, I FELT THE NOSE WHEEL TOUCH THE RUNWAY FIRST WHICH PROMPTED ME TO TAKE THE FLIGHT CONTROLS TO ADD FULL POWER AND EXECUTE A GO AROUND. HOWEVER, THE NOSE DROPPED AND THE PLANE BEGAN TO PORPOISE DOWN THE RUNWAY WHILE THE STALL WARNING WAS SOUNDING. AS THE AIRPLANE PORPOISED, I ATTEMPTED TO KEEP THE NOSE LEVEL TO REGAIN LIFT UNDER THE WINGS SINCE THE STALL WARNING WAS SOUNDING. THE AIRPLANE BOUNCED ABOUT 5 OR 6 TIMES BEFORE COMING TO REST ABOUT HALF WAY DOWN THE RUNWAY. AFTER COMING TO A FULL STOP I IMMEDIATELY SECURED THE AIRPLANE BY TURNING OFF THE ENGINE MASTERS, THE ELECTRIC MASTER, AND SHUTTING OFF THE FUEL SELECTORS AND ASKED IF THE STUDENT WAS PHYSICALLY OKAY, TO WHICH HE REPLIED YES. AFTER EXITING THE AIRCRAFT, THE ^PRIVACY DATA OMITTED^ FLIGHT SUPERVISOR WAS CALLED, AND THE FBO PERSONNEL TRANSPORTED US BACK TO THE FBO OFFICE.

STUDENT: AFTER HAVING COMPLETED ONE GO AROUND AND TWO LANDINGS, WE CAME IN FOR ANOTHER APPROACH PRACTICING SHORT FIELD LANDING. APPROACH WAS A BIT STEEP AND FAST DUE TO GUSTY CONDITIONS. UPON WHEELS TOUCHING THE GROUND, THE AIRCRAFT HAD SLOWED TO AROUND 74 KNOTS. AFTER THE WHEELS (DO NOT REMEMBER IF THE MAIN GEAR OR ALL THREE GEARS) TOUCHED, THE AIRCRAFT BOUNCED. INSTRUCTOR CALLED OUT "GO AROUND" AND STATED "I HAVE FLIGHT CONTROLS", THEN STUDENT REMOVED HANDS FROM CONTROL STICK. ONCE A GO AROUND WAS INITIATED THE WINGS HAD NO LIFT (HEARD STALL WARNING) WHICH IN TURN MADE THE BOUNCE TURN INTO AN ACCELERATED PORPOISE. AFTER PORPOISING 2-3 TIMES THE FRONT CANOPY BECAME UNLATCHED. AS I WAS NO LONGER ON THE CONTROLS, TO PREVENT GETTING HIT BY PROP DEBRIS, I HELD DOWN THE CANOPY AND HELD ON TO MY SEATBELT. AT AROUND 5-6 BOUNCES THE PLANE HAD ONE LAST BOUNCE AND VEERED OFF TO THE RIGHT SIDE OF RUNWAY 13 AT LEESBURG INTERNATIONAL AIRPORT.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.

Other reports on N306ER · 1

Matched to the same aircraft by N-number and date.