Gusts and Ground Effect
A Diamond DA40 in a crosswind landing — directional control, energy management, and the point of no return
The scenario
Departing Sarasota Bradenton International Airport (KSRQ), Sarasota, FL — Runway 14, a 9,500 ft east-west runway. Elevation 30 ft MSL. You are a commercial pilot with 350 hours total time, 120 hours in the DA40, current and proficient. This is a routine local flight — a 1.5-hour round trip to a nearby field and back.
The weather is VFR: scattered clouds at 3,500 ft, visibility 10 SM, temperature 24°C, dew point 18°C. The wind is from 180° at 18 gusts 28 knots — a direct crosswind to Runway 14 (magnetic heading 134°). The demonstrated crosswind component for the DA40 is 15 knots. You are 3 knots over the limit. The tower is open and active (0600–0000 local). You are in Class C airspace.
You have flown into KSRQ dozens of times. You know the field. The DA40 is a slippery, responsive airplane — constant-speed prop, fuel-injected Lycoming, fixed gear, glass panel. Energy management on approach is critical; the airplane floats in ground effect if you arrive too fast or too high. You are current and proficient, but you have not flown in crosswinds this strong in the DA40 for several months.
Outbound flight was uneventful. You are now on a 10-mile final approach to Runway 14, descending through 1,200 ft MSL, airspeed 90 KIAS, flaps 25°. The wind is gusting noticeably. The runway is in sight. Tower clears you to land. You are committed to the approach.
- {'label': 'Field', 'value': 'KSRQ · Sarasota Bradenton'}
- {'label': 'Runways', 'value': '4/22 · 14/32'}
- {'label': 'Elevation', 'value': '30 ft'}
- {'label': 'Aircraft', 'value': 'DA40'}
- {'label': 'Dominant phase', 'value': 'Takeoff / Landing'}
The decision
Before we get into the decision tree — what do you know about crosswind landings in the DA40 and loss of directional control? (Pick all that apply; this records your baseline.)
What the record shows
What the NTSB files show
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's attempt to abort the landing was unsuccessful, and 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. The student pilot was injured; the airplane was destroyed.
NTSB GAA19CA582 (2019): A Diamond DA40 on an instructional flight experienced a loss of control during an aborted go-around when the pilot cut power and applied brakes with insufficient runway remaining. The accident resulted from the pilot's decision to abort the go-around without adequate runway distance and his failure to accurately communicate his intentions to air traffic control. The airplane struck a concrete barrier and was substantially damaged.
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 airplane was substantially damaged.
Regional precedent — NTSB ERA17CA149 (2017): A North American T-6G aircraft landed hard during a go-around attempt in gusting crosswind conditions; the right wingtip contacted the runway, the aircraft pivoted right, and nosed over. The accident resulted from the pilot's failure to maintain directional control during the landing roll and go-around in gusting wind conditions. The airplane was destroyed.
The real accidents cited above occurred at other airports and in other aircraft — NOT at KSRQ. KSRQ's own accident corpus shows LOSS_OF_CONTROL_GROUND (19.2%), FORCED_LANDING (15.4%), RUNWAY_EXCURSION (11.5%), and HARD_LANDING (11.5%) as dominant patterns. The scenario is localized to KSRQ to make the crosswind challenge and the runway geometry real for you as a student here.
The consistent thread across all these events: loss of directional control during landing rollout in crosswind or gusty conditions. The failure is always a delay in recognizing the loss of control or a failure to apply corrective inputs early. By the time the nose gear catches or the wing tip strikes the pavement, recovery is no longer possible. The decision point is earlier — during the approach, when you recognize the crosswind is at or above the demonstrated limit, or during the rollout, when you recognize the first sign of drift and apply immediate corrective action.
Key lesson — The DA40's demonstrated crosswind component is 15 knots. At KSRQ, a wind of 180° at 18 gusts 28 knots is a direct crosswind to Runway 14 that exceeds the limit by 3 knots at the gust peak. Exceeding the demonstrated limit in gusty conditions is a risk — not a certainty of failure, but a risk. The decision to land, go around, or divert is yours to make under 14 CFR §91.3. If you do land, the critical phase is the rollout: the first sign of drift requires immediate crosswind correction (aileron into the wind, opposite rudder to keep the nose aligned). A delay in corrective action or an over-correction can cascade into a loss of directional control, a skid, and a runway excursion. The nose gear catch and cartwheel (ERA21LA039, ERA17CA149) are the failure modes when directional control is lost and not recovered early.
Debrief — teaching points
The demonstrated crosswind component is a limit, not a suggestion.
The DA40's demonstrated crosswind component of 15 knots is the maximum crosswind the airplane was tested to handle safely during landing and takeoff. Exceeding this limit is not prohibited by regulation, but it is a demonstrated limit beyond which control authority becomes marginal. At KSRQ, a wind of 180° at 18 gusts 28 knots produces a crosswind component of 18 knots at the gust peak — 3 knots over the limit. The decision to land in these conditions is yours under 14 CFR §91.3, but you must understand the risk. A go-around or diversion is a defensible, conservative choice.
The DA40 floats in ground effect — energy management on approach is critical.
The DA40 is a slippery, efficient airplane. If you arrive on final too fast or too high, the airplane will float in ground effect and you may not have enough runway to stop. On approach to a 5,000 ft runway (Runway 22) in a crosswind, arriving at 90 KIAS instead of 70 KIAS (Vref) is a significant energy penalty. Plan your approach to arrive at Vref (70 KIAS) or slightly below, and be prepared to slip if necessary to lose altitude and energy.
Crosswind correction during landing rollout requires immediate, smooth inputs.
During landing rollout in a crosswind, the first sign of drift (the nose drifting downwind, the upwind wing lifting) requires immediate crosswind correction: aileron into the wind to keep the wing level, and opposite rudder to keep the nose aligned with the runway. The correction must be smooth and proportional — over-correcting can cascade into a skid. At 40–50 KIAS, aerodynamic control authority is weak; the correction must be made early, when airspeed is higher and control authority is stronger.
A loss of directional control during rollout requires a shift from recovery to damage mitigation.
If a gust or a delayed correction causes the airplane to skid (the nose drifting, the wing dropping), there is a point at which recovery is no longer possible. At 30–40 KIAS, with the left wing low and the right main gear lifting, the aerodynamic forces are too weak to recover. The focus must shift from recovery to damage mitigation: stop the airplane, accept the skid, and let the airplane slide to a stop on grass or soft ground rather than catching the nose gear on pavement. The NTSB ERA21LA039 and ERA17CA149 show the failure mode: a nose gear catch during a skid leads to a cartwheel and severe structural damage.
The constant-speed prop requires high RPM on approach for maximum control authority.
The DA40's constant-speed prop should be set to high RPM (prop control full forward) on approach and landing. This maximizes engine response and control authority. If the prop is set to a lower RPM, the engine response is sluggish and you have less control authority if you need to abort the landing or apply go-around power. On approach, the prop control is full forward; the throttle is used for descent rate and airspeed control.
Fuel selector management — LEFT / RIGHT, no BOTH — is a constant responsibility.
The DA40 has a LEFT / RIGHT fuel selector with no BOTH position. This is different from many other aircraft. On extended flights, you must actively manage the fuel selector to balance the tanks and avoid fuel starvation from a mis-set selector. On approach and landing, ensure the fuel selector is set to the tank with the most fuel, or switch to the other tank if one is significantly lower. A fuel starvation event during landing is catastrophic.
Built from the real accident record
Scenario built from NTSB ERA21LA039 (2020 DA40 landing loss of control / runway excursion), GAA19CA582 (2019 DA40 go-around abort / runway excursion), GAA19CA038 (2018 DA40 excessive landing speed / runway excursion), and regional crosswind-loss-of-control precedents GAA17CA105, ERA17CA149, GAA16CA149, CHI02TA149. Localized to KSRQ.
NTSB reports: ERA21LA039 · GAA19CA582 · GAA19CA038 · GAA17CA105 · ERA17CA149 · GAA16CA149 · CHI02TA149
ACS tasks: PA.III.A — Preflight Inspection · PA.III.B — Cockpit Management · PA.IV.A — Normal Takeoff and Climb · PA.IV.B — Normal Approach and Landing · PA.IV.C — Forward Slip to a Landing · PA.IV.D — Go-Around / Rejected Landing · PA.V.A — Steep Turns · PA.V.B — Slow Flight · PA.IX.C — Emergency Approach and Landing · PA.I.H — Human Factors
Relevant FARs: §91.3 · §91.13 · §91.103
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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