Uncoordinated Turn on the Initial Climb
Carburetor ice, partial power loss, and a low-altitude turn — the stall/spin trap in the Piper Warrior
The scenario
Departing Lakeland Linder International Airport (KLAL), Lakeland, FL — Runway 10, climbing out on a 090° heading. Elevation 142 ft MSL; the runway is essentially at sea level.
It is a hazy Florida afternoon in late spring: OAT 27°C, dew point 21°C, altimeter 29.92. Scattered clouds at 2,500 ft, light rain shower three miles to the northeast. Visibility 8 SM. Classic Gulf Coast conditions — warm, moist, and exactly the environment the FAA icing probability chart marks as 'serious icing at glide power, moderate icing at cruise power.'
You are 500 ft AGL, climbing through 79 KIAS (Vy, best rate of climb), heading 090°, when the engine begins to run rough. Power is noticeably down — the tachometer is dropping. The terrain ahead is a mix of low-density development, open parks, and patches of dense development. KLAL's tower is 24-hour and is active; you are in Class D airspace (ceiling 2,600 MSL).
Aircraft: Piper PA-28-161 Warrior, solo, full fuel (both tanks), within limits. Carbureted Lycoming O-320-D, fixed-pitch prop, steam panel, fuel selector on RIGHT (you switched to right tank after takeoff per the checklist). Nothing was written up; the airplane was airworthy at departure.
Pilot: you — a Private pilot, current, roughly 180 hours total. You did not apply carburetor heat during the run-up because the engine ran smoothly. You did not apply it after takeoff because you were focused on the climb and the tower frequency.
- {'label': 'Field', 'value': 'KLAL · Lakeland Linder'}
- {'label': 'Runways', 'value': '5/23 · 10/28'}
- {'label': 'Elevation', 'value': '142 ft'}
- {'label': 'Aircraft', 'value': 'PA-28-161'}
- {'label': 'Dominant phase', 'value': 'Landing / Takeoff'}
The decision
Before we get into the decision tree — what do you already know about carburetor ice and stall/spin risk in the Piper Warrior? (Pick all that apply; this records your baseline.)
What the record shows
What the NTSB files show
NTSB LAX03LA238 (2003): A Piper PA-28-161 encountered carburetor ice during initial climb from Torrance, California. The engine lost power. During a go-around attempt, the pilot failed to maintain adequate airspeed, resulting in a stall and collision with power lines and terrain. The probable cause was carburetor icing and the pilot's failure to use carburetor heat and maintain airspeed during the aborted landing.
NTSB CHI05LA226 (2005, FATAL): A Piper PA-28-161 on an instructional flight from Culver, Indiana, lost engine power due to left magneto failure during initial climb after takeoff. The airplane subsequently stalled. The probable cause was partial magneto failure caused by improper maintenance, with contributing factors including the flight instructor's failure to maintain airspeed and follow emergency procedures. The stall occurred at low altitude and was fatal.
NTSB CEN12FA188 (2012, FATAL): A Piper PA-28-161 stalled during takeoff from a soft grass airstrip with a quartering tailwind and struck trees at the departure end of the runway. The probable cause was the pilot's failure to maintain airplane control during takeoff, which resulted in an aerodynamic stall. Contributing factors included inadequate preflight performance planning for the soft field conditions and failure to obtain a weather briefing.
The consistent thread across all these events: the PA-28-161 is a docile, forgiving trainer, but at low altitude with partial power loss and degraded airspeed, it is vulnerable to an uncoordinated stall/spin. The stall can develop very quickly — faster than a pilot expecting a simple engine-out scenario can respond. The fix is immediate: apply carburetor heat at the first sign of roughness, maintain airspeed (73 KIAS best glide), and keep the airplane coordinated (ball centered). Delay on any of these points — delay on carb heat, delay on lowering the nose, delay on coordinating the turn — and the stall/spin trap closes.
The real accidents cited above occurred at other airports and in other aircraft types — NOT at Lakeland Linder International Airport. KLAL has its own accident history (see field dominant patterns: LOSS_OF_CONTROL_INFLIGHT 23.7%, LOSS_OF_CONTROL_GROUND 19.4%, FORCED_LANDING 17.2%), but these specific NTSB events happened elsewhere. The scenario is localized to KLAL to make the off-field environment real and consequential for you as a student here.
Off Runway 10's departure end (heading 090°), the off-field environment is mixed low-density development, open parks, and patches of dense development — MARGINAL for a forced landing. Off Runway 28's departure end (heading 270°), the environment is medium development, evergreen forest, and low-density development — POOR for a forced landing. The runway you choose to depart from, and the decisions you make in the first 500 ft, determine whether an engine failure is a manageable forced landing or a stall/spin into trees.
Key lesson — In warm, moist Gulf Coast air, the PA-28-161's carbureted O-320-D can accumulate serious carburetor ice even at cruise power and above-freezing temperatures. Apply full carburetor heat at the first sign of engine roughness or unexplained RPM loss. At low altitude on the initial climb, the decision window is measured in seconds — not minutes. Maintain 73 KIAS best glide, keep the ball centered, and do not attempt an uncoordinated turn back to the airport at 500 ft AGL. A stall/spin at low altitude is fatal. A controlled forced landing in the best available terrain is survivable.
Debrief — teaching points
Carburetor ice forms in conditions you would not expect.
The FAA icing probability chart shows 'serious icing at glide power' at temperatures between roughly 20°C and 30°C when relative humidity is high — exactly the Gulf Coast afternoon conditions at KLAL. You do not need visible ice, freezing temperatures, or IMC. Warm, moist air at reduced power is the classic carb-ice environment. The PA-28-161's Lycoming O-320-D is carbureted; it has no fuel injection. Carburetor heat is the only tool. Scan the tachometer as part of your regular instrument scan, especially in conducive conditions.
The first symptom is subtle — a dropping tachometer and engine roughness.
In a fixed-pitch airplane like the PA-28-161, carburetor ice first shows as engine roughness and an unexplained RPM decrease. There is no dramatic power cut. Pilots who are not actively monitoring the tachometer miss the early warning. By the time the roughness is obvious, significant ice has accumulated. At 500 ft AGL on the initial climb, that delay is fatal.
Apply full carburetor heat — not partial — and expect an initial RPM drop.
When you apply carb heat to an iced carburetor, the RPM will drop further before it rises. This is expected and normal: the heat is melting ice and the resulting water is briefly disrupting combustion. Do not remove carb heat when the RPM drops — that is the heat working. Hold it full on. The RPM will recover as the ice clears, typically within 15–30 seconds depending on ice accumulation. Partial carb heat can worsen the situation by partially melting ice into water ingestion without fully clearing the restriction.
The PA-28-161 has LEFT / RIGHT fuel selector with NO BOTH position — tank management is your job.
Unlike some Cessnas, the Warrior has no BOTH position. You must actively switch tanks during flight. Fuel starvation from forgetting to switch tanks is a real risk in the PA-28-161. In this scenario, you switched to RIGHT after takeoff per the checklist — that is correct. But do not confuse a fuel selector change with a carburetor heat response. If the engine is rough and the tachometer is dropping, carb heat is the first diagnosis, not the fuel selector.
At low altitude with partial power loss, maintain 73 KIAS best glide and keep the ball centered.
The PA-28-161's best glide speed is 73 KIAS. At 500 ft AGL with a rough engine, lowering the nose to 73 KIAS is not optional — it is the only way to maintain control authority and avoid a stall. An uncoordinated turn at 500 ft AGL with degraded airspeed is a stall/spin trap. Keep the ball centered. Do not attempt a steep turn back to the airport; a shallow, coordinated turn is the only safe option.
Off Runway 10 at KLAL, the departure environment is MARGINAL for a forced landing.
The off-field environment off Runway 10's departure end (heading 090°) is mixed low-density development, open parks, and patches of dense development — classified as MARGINAL. If the engine fails on the Runway 10 departure and altitude is insufficient to return to the airport, a forced landing in an open park or large developed lot is the best available option. This is not a ditching or a stall/spin into trees — it is a controlled forced landing in the best available terrain. Survival rates are significantly better than in uncontrolled stall/spin scenarios.
Proactive carb heat use in conducive conditions is not optional.
The PA-28-161 POH and the FAA Pilot's Handbook of Aeronautical Knowledge both recommend applying carburetor heat when conditions are conducive to icing — before the symptom appears. In a Gulf Coast summer departure, with OAT near 27°C and dew point near 21°C, that means applying carb heat during the run-up check (and confirming the expected RPM drop, then recovery) and considering its use during climb in visible moisture or high humidity. Waiting for the roughness to appear at 500 ft AGL is waiting too long.
Built from the real accident record
Scenario built from NTSB LAX03LA238 (2003 PA-28-161 carburetor ice / stall on go-around), CHI05LA226 (2005 PA-28-161 magneto failure / stall on initial climb, fatal), and CEN12FA188 (2012 PA-28-161 stall on soft-field takeoff, fatal). Localized to Lakeland Linder International Airport (KLAL), Lakeland, FL.
NTSB reports: LAX03LA238 · CHI05LA226 · CEN12FA188
ACS tasks: PA.I.F — Weather Information · PA.I.G — Cross-Country Flight Planning · PA.II.A — Preflight Inspection · PA.II.B — Engine Starting / Systems Preflight · PA.III.A — Normal Takeoff and Climb · PA.IX.C — Emergency Approach and Landing · PA.I.H — Human Factors
Relevant FARs: §91.3 · §91.13 · §91.185
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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