Float and Drift at St. Petersburg Clearwater
Excess approach energy, a slippery DA20, and crosswind gusts — the runway is narrower than it looks
The scenario
Departing St. Petersburg Clearwater International Airport (KPIE), Pinellas Park, FL — Runway 18, a 9,730 ft concrete runway. Elevation 11 ft MSL. You are on your third approach of the day in the Diamond DA20, a light, slippery composite trainer that floats in ground effect and is sensitive to crosswind gusts.
Current conditions: OAT 26°C, wind 180° at 12 kt gusting to 18 kt. Runway 18 is a headwind, but the gust component is pushing you from the right. The tower has cleared you for landing. Visibility 10 SM, scattered clouds at 3,000 ft, VFR all the way.
You are on a 3° glide slope, 500 ft AGL, configured for landing: flaps 15° (landing flap), gear down (fixed), mixture leaned for descent, trim set. You are flying Vref 55 KIAS on the approach. The runway is ahead, straight and clear.
Aircraft: Diamond DA20-C1, solo, within weight and balance limits. The DA20 is a fixed-gear, fixed-pitch trainer with a fuel-injected Continental IO-240 (125 hp). It has no carburetor heat — the engine is fuel-injected. The fuel selector is ON / OFF (single tank); there is no left/right management. The nosewheel is a castering design — directional control on the ground depends on differential braking and rudder authority, which diminishes as you slow.
Pilot: you — a Private pilot, current, roughly 180 hours total. You have about 25 hours in the DA20. You have landed this airplane a dozen times, but never in crosswind gusts this strong. Your CFI is not on board — this is a solo flight. You are focused and ready.
- {'label': 'Field', 'value': 'KPIE · St. Petersburg Clearwater'}
- {'label': 'Runways', 'value': '4/22 · 18/36'}
- {'label': 'Elevation', 'value': '11 ft'}
- {'label': 'Aircraft', 'value': 'DA20'}
- {'label': 'Dominant phase', 'value': 'Takeoff / Landing'}
The decision
Before we get into the decision tree — what do you already know about the DA20's landing characteristics and crosswind handling? (Pick all that apply; this records your baseline.)
What the record shows
What the NTSB files show
NTSB WPR20CA305 (2020): A Diamond DA20 on an instructional flight bounced during landing and veered left during a go-around attempt, impacting uneven terrain. The probable cause was the student pilot's improper landing flare and delayed remedial action to abort the landing, resulting in loss of aircraft control and runway excursion.
NTSB GAA19CA490 (2019): A Diamond DA20 flown by a student pilot on a first solo flight experienced right yaw during the third approach that could not be corrected with rudder input. The student attempted to abort the landing but the aircraft continued to descend with right yaw, exited the runway, and struck rough terrain. The probable cause was the student pilot's failure to maintain runway heading during an attempted aborted landing.
NTSB GAA19CA330 (2019): A Diamond DA20 student pilot flared too early during a crosswind landing, ballooned, and drifted left. When the instructor called for a go-around, the student maintained a strong grip on the controls, preventing the instructor from making control inputs. The aircraft veered off the runway and impacted runway lights. The probable cause was the student's failure to maintain runway heading and refusal to relinquish controls in gusting crosswind conditions.
NTSB WPR11CA099 (2011): A Diamond DA20C1 drifted left during landing rollout and struck a snow bank after the left main tire caught the bank edge. The probable cause was the pilot's failure to maintain directional control during landing.
The common thread across all four accidents: the DA20 is a light, slippery airplane that floats in ground effect and is sensitive to crosswind gusts. The nosewheel is castering — directional control on the ground depends on differential braking and rudder authority, which diminishes as the airplane slows. A flare that is too early or too aggressive causes a balloon. A balloon forces a choice: go around (the correct call) or salvage the approach (the wrong call). Salvaging leads to an unstable descent, drift during rollout, and loss of directional control. The accidents all occurred at different airports, but the mechanism is identical.
At KPIE, Runway 18 is 9,730 ft long and 150 ft wide — plenty of room for a stable landing. The off-field environment off the runway is medium development, open developed (parks/large lots), and dense development — not water, not mountains, but uneven terrain with structures. A runway excursion at KPIE is survivable if the airplane is under control; it becomes an accident if directional control is lost.
The real accidents cited above occurred at other airports — NOT at KPIE. The scenario is localized to KPIE to make the runway environment and off-field reality specific to your home field. The decision points are the same: stable approach, correct flare, clean go-around if unstable, and differential braking for directional control during rollout.
Key lesson — The DA20 floats in ground effect and is sensitive to crosswind gusts. An early or aggressive flare causes a balloon. A balloon forces a go-around decision. The correct call is always to go around — do not try to salvage an unstable approach. If you do land, maintain directional control during rollout using differential braking and rudder. The nosewheel is castering; rudder alone is not enough at low speed. At KPIE Runway 18, you have 9,730 ft of runway — use it wisely.
Debrief — teaching points
The DA20 floats in ground effect — excess approach energy is the enemy.
The DA20 is a light, composite airplane with a low wing loading. In ground effect (below 50 ft AGL), the airplane floats easily. Flying Vref 55 KIAS is the correct approach speed, but even at Vref, excess energy from a high approach or a shallow descent angle will cause a long float. A flare that is too early or too aggressive will balloon the airplane and eat runway. Know your landing distance required (LDR) for the conditions and the runway. At KPIE Runway 18 (9,730 ft), you have plenty of room, but do not assume you can salvage a bad approach by floating down the runway.
A balloon is a signal to go around — not to salvage the approach.
If the flare causes a balloon (a pitch-up that results in a climb), the approach is unstable. The correct response is to add power, pitch down, and go around. Do not try to salvage the approach by reducing power and pitching down steeply — that leads to an unstable descent, drift, and loss of directional control. A go-around at 250 ft AGL is safe and recoverable. A runway excursion at 20 kt is not.
The DA20's nosewheel is castering — differential braking is essential for directional control on the ground.
The DA20's nosewheel is a castering design, not a steerable nosewheel. On the ground, directional control depends on differential braking and rudder authority. As the airplane slows, rudder authority diminishes. At 20–30 kt, rudder alone is not enough to correct a drift. Differential braking (right brake to correct a right drift, left brake to correct a left drift) is the primary tool for directional control during rollout. Practice differential braking in crosswind conditions — it is the difference between a safe landing and a runway excursion.
Crosswind gusts require active rudder and differential braking during rollout.
In crosswind conditions, especially with gusts, the airplane will drift during rollout. The wind pushes the airplane sideways. The nosewheel is castering and will follow the drift. You must actively correct the drift using rudder (to align the fuselage with the runway) and differential braking (to stop the drift). Do not assume the drift will stop as the airplane slows — it will not. Correct it actively. At KPIE Runway 18, with wind 180° at 12 kt gusting to 18 kt, expect a right drift during rollout. Correct it with right brake and right rudder.
Vref 55 KIAS is the correct approach speed — flying faster increases landing distance and float.
Vref for the DA20 is 55 KIAS. This is the speed that gives the best combination of control authority and landing distance. Flying 65 KIAS (10 kt above Vref) increases landing distance by roughly 20% and makes the airplane more prone to float. If you are flying above Vref on approach, you are already committed to a longer landing. At KPIE with 9,730 ft of runway, this is not critical, but it is a bad habit. Fly Vref 55 KIAS on every approach.
Built from the real accident record
Scenario built from NTSB WPR20CA305 (2020 DA20 improper flare and go-around), GAA19CA490 (2019 DA20 first solo yaw and runway excursion), GAA19CA330 (2019 DA20 crosswind flare and control refusal), and WPR11CA099 (2011 DA20C1 directional control loss). Anonymized and localized to KPIE.
NTSB reports: WPR20CA305 · GAA19CA490 · GAA19CA330 · WPR11CA099
ACS tasks: PA.II.J — Approach and Landing · PA.II.K — Go-Around / Rejected Landing · PA.I.H — Human Factors · PA.II.A — Preflight Preparation
Relevant FARs: §91.3 · §91.13 · §91.209
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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