The Impossible Turn
Partial engine power loss on initial climb, a low-altitude turnback attempt, and the aerodynamic trap that kills pilots
The scenario
Departing Tampa North Aero Park Airport (X39), Tampa, FL — Runway 14, initial climb on a 141° heading. Elevation 68 ft MSL. The runway is short (3,541 ft) and narrow; the off-field environment on both departure ends is poor: medium development, low-density residential, and wooded wetland. There is no open field, no road, no water. The terrain is built-up and obstacles are present.
It is a warm, humid Florida morning in late July: OAT 32°C, dew point 24°C, altimeter 29.89. Scattered clouds at 3,500 ft, visibility 10 SM. Density altitude is approximately 2,400 ft — the airplane will perform as if it is at 2,400 ft elevation, not 68 ft. The air is thick and sluggish.
You are a Private pilot with 180 hours total time, current, and you are flying solo in the Piper Cherokee 180. The airplane is within limits: 2,350 lb gross weight, fuel tanks full (36 gallons usable), CG in limits. You completed a normal run-up; the engine ran smoothly, both magnetos checked green, and you found no anomalies.
You line up on Runway 14, advance the throttle to full power, and begin the takeoff roll. The airplane accelerates normally. At rotation speed (approximately 55 KIAS), you ease back on the yoke and the nose comes up. The airplane lifts off at 60 KIAS. You are climbing at 74 KIAS (Vy, best rate of climb) at 200 ft AGL when the engine begins to run rough. The tachometer is unwinding — power is dropping noticeably.
Aircraft: Piper Cherokee 180, solo, full fuel, within limits. Lycoming O-360-A, carbureted, fixed-pitch prop, steam panel, fuel selector on LEFT (the takeoff tank). Nothing was written up; the airplane was airworthy at departure.
Pilot: you — a Private pilot, current, 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.
- {'label': 'Field', 'value': 'X39 · Tampa North Aero Park'}
- {'label': 'Runways', 'value': '14/32'}
- {'label': 'Elevation', 'value': '68 ft'}
- {'label': 'Aircraft', 'value': 'PA-28-180'}
- {'label': 'Dominant phase', 'value': 'Takeoff / Landing'}
The decision
Before we get into the decision tree — what do you already know about engine failure on initial climb in the PA-28-180? (Pick all that apply; this records your baseline.)
What the record shows
What the NTSB files show
NTSB LAX01FA199 (2001): A Piper PA-28-180 student pilot on a solo instructional flight at Big Bear City, California selected a downwind takeoff runway and stalled during initial climb at low altitude, striking trees. The accident was attributed to inadequate airspeed management and a downwind takeoff, with contributing factors including partial engine power loss from an inoperative right magneto and high density altitude. The probable cause: the student pilot's selection of a takeoff runway conducive to a tailwind and his failure to maintain airspeed, with an inadvertent stall during takeoff initial climb. The inoperative right magneto and high density altitude were contributing factors.
NTSB ANC90LA112 (1990): A heavily loaded Piper PA-28 crashed into trees approximately 40 seconds after takeoff from a closed dirt strip after encountering a downdraft. The accident resulted from the aircraft's inability to overcome the downdraft with available power, compounded by heavy loading and engine degradation from improper maintenance. The probable cause: the airplane encountered a downdraft shortly after takeoff from which the airplane could not overcome with power. Contributing factors: the heavily loaded airplane and the engine not developing full power due to improper maintenance.
Regional precedents show the same fatal pattern: NTSB WPR17FA152 (2017, Jansen Pazmany PL-2) — engine power loss shortly after takeoff, pilot attempted to return to the runway but stalled and spun at 200 ft AGL, impacting terrain in a near-vertical attitude. NTSB LAX93LA048 (1992, Rans S-10 Sakota) — engine power loss shortly after takeoff, stalled/spun while maneuvering to land at 150–200 ft. NTSB ERA14FA123 (2014, Williams Sonex) — partial engine power loss during initial climb, steep 180° turn back toward the airport at low altitude, stall and spiral descent into a canal. NTSB SEA90LA162 (1990, Vaden SA102 Cavalier) — engine power loss during initial climb, entered a spin when the pilot failed to maintain airspeed during the left turn.
The consistent thread: after engine failure at low altitude, attempting to return to the runway forces a steep turn that will exceed the stall margin. At 200 ft AGL in a PA-28-180, a 180° turn back to the departure runway requires a bank angle of 25–30° or more. At that bank angle, the stall speed increases significantly (roughly 1.4× the clean stall speed of 59 KIAS). If the engine is losing power and the airspeed is dropping, the turn will stall the airplane. At 150–200 ft AGL, there is no altitude for recovery. The spin develops and the airplane impacts terrain.
The real accidents cited above occurred at other airports and in other aircraft types — NOT at Tampa North Aero Park (X39). X39 has its own accident history (see field dominant patterns: 27.3% loss of control inflight, 18.2% loss of control ground, 9.1% stall/spin). The scenario is localized to X39 to make the off-field environment real and consequential for you as a student here. The terrain off both runway ends is medium development and wooded wetland — poor forced-landing options. A forward landing in that terrain at 65 KIAS is survivable; a stall/spin at 150 ft AGL is not.
The lesson is unambiguous: after engine failure at low altitude, the correct decision is to land straight ahead in the best available terrain, not to attempt a steep turn back to the runway. The 'impossible turn' is not a myth — it is a documented fatal trap that kills pilots every year.
Key lesson — After engine failure at low altitude (below 500 ft AGL), attempting to return to the runway forces a steep turn that will exceed the stall margin and cause a stall/spin. At 200 ft AGL in a PA-28-180, the stall speed in a 25–30° bank is approximately 82 KIAS; if the engine is losing power and the airspeed is dropping, the turn will stall the airplane. There is no altitude for recovery. The correct decision — land straight ahead in the best available terrain at 65 KIAS best glide — is the only one that survives. The 'impossible turn' is real.
Debrief — teaching points
Engine failure at low altitude is a forced landing, not a return-to-airport scenario.
The 'impossible turn' is a documented fatal trap. After engine failure below 500 ft AGL, the pilot's instinct is to turn back to the runway. But at 200 ft AGL in a PA-28-180, a 180° turn requires a bank angle of 25–30° or more. At that bank angle, the stall speed increases to approximately 82 KIAS (from 59 KIAS clean). If the engine is losing power and the airspeed is dropping, the turn will stall the airplane. At 150–200 ft AGL, there is no altitude for recovery. The spin develops and the airplane impacts terrain. The correct decision — land straight ahead in the best available terrain — is the only one that survives.
Carburetor ice in the PA-28-180 forms in warm, humid air at reduced power.
The Lycoming O-360-A is carbureted. The FAA icing probability chart shows serious carburetor icing risk at glide power and moderate risk at cruise power in the temperature range of roughly 20–30°C with high relative humidity. Warm, moist air — not freezing temperatures — is the classic carb-ice environment. The temperature drop across the carburetor venturi can be 20–30°C, easily producing ice even when OAT is well above freezing. At 32°C OAT and 24°C dew point on a Florida morning, you are in serious icing territory.
The first symptom of carburetor ice is a dropping tachometer and engine roughness.
In a fixed-pitch airplane like the PA-28-180, 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. Scan the tachometer as part of your regular instrument scan, especially in conducive conditions. At 200 ft AGL on initial climb, a rough engine is an emergency until proven otherwise.
Apply full carburetor heat immediately — 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-28-180 fuel selector is LEFT / RIGHT with no BOTH position — tank switching is mandatory.
Unlike Cessnas (which have a BOTH position), the PA-28-180 requires active fuel selector management. Running a selected tank dry — or taking off on a near-empty tank — is the signature starvation trap. Before takeoff, confirm both tanks are full and the selector is on the fuller tank (typically LEFT). During cruise, switch tanks every 30 minutes to balance fuel. Never take off with a tank below half-full. A fuel starvation event on initial climb is as fatal as carburetor ice; the symptom is the same (rough engine, dropping RPM), but the cause is different.
Built from the real accident record
Scenario built from NTSB LAX01FA199 (2001 PA-28-180 stall/spin on initial climb, partial power loss from inoperative magneto), ANC90LA112 (1990 PA-28-180 downdraft/power loss after takeoff), WPR21LA020 (2020 PA-28-180 partial power loss cruise), WPR13LA366 (2013 PA-28-180 partial power loss takeoff), and regional precedents WPR17FA152, LAX93LA048, ERA14FA123, SEA90LA162 (all fatal stall/spin during low-altitude turnback after engine failure). Anonymized and localized to Tampa North Aero Park (X39).
NTSB reports: LAX01FA199 · ANC90LA112 · WPR21LA020 · WPR13LA366 · WPR17FA152 · LAX93LA048 · ERA14FA123 · SEA90LA162
ACS tasks: PA.I.F — Weather Information · PA.I.G — Cross-Country Flight Planning · PA.IX.C — Emergency Approach and Landing · PA.I.H — Human Factors · PA.II.B — Engine Starting / Systems Preflight
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.
Open the interactive scenario →All sample scenarios · More Piper Cherokee 180 scenarios · More scenarios at X39