Energy Management on Short Final
A slippery DA40, excess approach speed, and a 3,200-foot runway — the float threatens a runway excursion
The scenario
Departing Tampa Executive Airport (KVDF), Tampa, FL — Runway 18, a 3,219-foot asphalt runway. Elevation 22 ft MSL. You are a commercial pilot, 800 hours total, with 120 hours in the DA40. This is a supervised solo instructional flight — your CFI is on the ground monitoring via radio.
It is a hot, humid Florida afternoon: OAT 32°C, dew point 24°C, altimeter 29.88 inHg. Density altitude is approximately 2,100 ft — the airplane will perform as if it is 2,100 ft above sea level, not 22 ft. Winds are light and variable, 3–5 kt. Visibility 10 SM. You have completed three full-stop landings on Runway 18 this session; this is landing number four.
You are on a 3-mile final for Runway 18 (heading 180°). The runway is ahead, straight and clear. You are configured for landing: flaps full (LDG, 91 KIAS max), landing gear fixed (always), constant-speed prop in high RPM (2,500 RPM cruise setting — you have not yet reduced it for landing). You are carrying 75 KIAS on short final — 5 knots above Vref (70 KIAS). The DA40 is a slippery airplane; it floats in ground effect.
Aircraft: Diamond DA40, solo, 2,400 lb (within limits). Fuel-injected Lycoming IO-360-M1A, constant-speed prop. Fixed gear. G1000 glass panel. The airplane is airworthy; nothing was written up.
Pilot: you — a commercial pilot, current, 800 hours total, 120 hours DA40. You have landed this airplane 40+ times. You are current and proficient. You are also task-saturated: you are hand-flying the approach (no autopilot), managing the constant-speed prop, monitoring the G1000, and planning the landing. The CFI is on the ground; you are responsible for the flight.
- {'label': 'Field', 'value': 'KVDF · Tampa Executive'}
- {'label': 'Runways', 'value': '5/23 · 18/36'}
- {'label': 'Elevation', 'value': '22 ft'}
- {'label': 'Aircraft', 'value': 'DA40'}
- {'label': 'Dominant phase', 'value': 'Landing / Takeoff'}
The decision
Before we get into the decision tree — what do you already know about energy management in the DA40 on approach and landing? (Pick all that apply; this records your baseline.)
What the record shows
What the NTSB files show
NTSB GAA19CA582 (2019): A Diamond DA40 on an instructional flight experienced a loss of control during an aborted go-around. The pilot initiated the go-around from a low altitude with insufficient runway remaining. The pilot cut power and applied brakes, attempting to land on the remaining runway. The airplane veered left, struck a concrete barrier, and came to rest. The probable cause was the pilot's decision to abort the go-around with insufficient runway distance and his failure to accurately communicate his intentions to air traffic control.
NTSB ERA21LA039 (2020): A Diamond DA40 on a Part 91 supervised solo instructional flight lost directional control during landing when the aircraft bounced and drifted left. The student pilot attempted to abort the landing, but the airplane was too low and too slow. The aircraft struck a taxiway sign and cartwheeled before impacting a security fence. The probable cause was the pilot's loss of directional control while landing, which resulted in a runway excursion.
NTSB GAA19CA038 (2018): A Diamond DA40 flown by a solo student pilot experienced a runway excursion and struck a taxiway sign after landing with excessive speed. The accident was attributed to the student pilot's excessive taxi speed during a turn from the runway to a taxiway. The underlying cause was poor energy management on approach — the airplane landed long and the pilot was unable to stop on the runway.
The common thread: the DA40 is a slippery, low-drag composite airplane. It floats in ground effect if approach energy is not managed carefully. Excess speed on short final (75 KIAS vs. Vref 70 KIAS) translates into a long landing. A long landing on a 3,219-ft runway leaves little margin for error. The pilot must either commit to the landing and manage the landing distance, or recognize the instability early and go around — not from 200 ft AGL, but from 500+ ft AGL when there is altitude and airspeed to spare.
At Tampa Executive Airport (KVDF), Runway 18 is 3,219 feet — adequate for a normal landing, but marginal if the airplane floats or if a go-around is aborted from a low altitude. The off-field environment off Runway 18's departure end (heading 180°) is low-density development, wooded wetland, and open developed areas (parks/large lots) — not a suitable forced-landing option. The lesson is not about off-field options; it is about managing approach energy to land on the runway.
The real accidents cited above occurred at other airports and in other aircraft — NOT at Tampa Executive Airport. KVDF has its own accident history (see field dominant patterns: LOSS_OF_CONTROL_GROUND 18.4%, HARD_LANDING 18.4%, FORCED_LANDING 15.8%). The scenario is localized to KVDF to make the runway length and the energy-management challenge real for you as a student here.
Key lesson — The DA40 is a slippery airplane. Approach energy management is critical. Vref is 70 KIAS; carrying 75 KIAS on short final will float the airplane and result in a long landing. On a 3,219-ft runway, a long landing leaves little margin. Manage approach energy carefully: reduce speed to Vref by 1 mile final, use a forward slip if needed to increase drag, and commit to the landing if you have sufficient runway. If the approach is unstable below 300 ft AGL, do not attempt a go-around — commit to the landing and manage the landing distance. A go-around from 200 ft AGL at 75 KIAS is a stall risk.
Debrief — teaching points
The DA40 is slippery — excess approach energy will float the airplane.
The DA40 is a composite, low-drag airplane. It floats in ground effect if approach energy is not managed. Vref (approach speed on short final) is 70 KIAS. Carrying 75 KIAS or higher on short final is excess energy that will result in a long landing. On a 3,219-ft runway, a long landing leaves little margin for error. Manage approach energy carefully: reduce speed to Vref by 1 mile final, and use a forward slip if needed to increase drag and force the airplane down.
The constant-speed prop must be in the correct landing configuration.
The DA40's constant-speed prop should be set to high RPM (2,500 RPM) for landing. If the prop is left in cruise setting or low RPM, the prop efficiency is reduced and the airplane will float more in ground effect. Confirm the prop is in the correct landing configuration before you begin the descent on final. This is a systems check that is easy to overlook when you are task-saturated.
A go-around must be initiated early — not from 200 ft AGL.
If the approach is unstable, a go-around is the correct decision. However, a go-around must be initiated early — ideally from 500+ ft AGL when there is altitude and airspeed to spare. A go-around from 200 ft AGL at 75 KIAS is marginal at best. The airplane is near stall speed in landing configuration. If you attempt to climb, the airspeed will decay and the airplane may stall. If the approach is unstable below 300 ft AGL, commit to the landing and manage the landing distance.
Density altitude affects landing distance — high DA means longer landing distance.
Today's density altitude is approximately 2,100 ft — the airplane will perform as if it is 2,100 ft above sea level, not 22 ft. This means the airplane will float more in ground effect and will require a longer landing distance. High density altitude is common in Florida in the summer. Be aware of the density altitude and plan for a longer landing distance. A 3,219-ft runway is adequate for a normal landing in standard conditions, but marginal in high-DA conditions if the approach energy is not managed.
Directional control on landing is critical — a bounce or drift can lead to a runway excursion.
The DA40 can bounce on landing if the touchdown is firm. A bounce can cause the airplane to drift left or right. Maintain directional control with rudder input throughout the landing and rollout. If the airplane drifts, apply rudder to correct the drift immediately. A runway excursion is a loss-of-control event on the ground — it is reportable and a sign of poor directional control or excess energy.
Runway 18 at KVDF is 3,219 feet — adequate, but not long.
Runway 18 at Tampa Executive Airport is 3,219 feet. This is adequate for a normal landing in standard conditions, but marginal if the approach energy is not managed or if the landing is long. The off-field environment off Runway 18's departure end is low-density development and wooded wetland — not a suitable forced-landing option. The lesson is to manage approach energy to land on the runway, not to plan for an off-field landing.
Built from the real accident record
Scenario built from NTSB GAA19CA582 (2019 DA40 aborted go-around / runway excursion), ERA21LA039 (2020 DA40 loss of directional control on landing), and GAA19CA038 (2018 DA40 excessive landing speed / runway excursion). Localized to Tampa Executive Airport (KVDF).
NTSB reports: GAA19CA582 · ERA21LA039 · GAA19CA038
ACS tasks: PA.V.A — Approach and Landing · PA.V.B — Go-Around / Rejected Landing · PA.V.C — Forward Slip · PA.I.H — Human Factors · PA.II.E — Flight Controls
Relevant FARs: §91.3 · §91.13 · §91.21
Step through the full decision tree, make the calls, and see where each choice leads — then debrief it with your CFI.
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