Rough Climb and the Impossible Turn
Engine roughness at 400 ft AGL, an attempted return to the runway, and the aerodynamic trap that kills pilots
The scenario
Departing Brooksville–Tampa Bay Regional Airport (KBKV), Brooksville, FL — Runway 09, climbing out on a 090° heading. Elevation 76 ft MSL. The runway is essentially at sea level; the surrounding terrain is open developed (parks, large lots), pasture, hay, and medium development — good forced-landing options in all directions off the runway ends.
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 visible two miles to the south. 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 in Class D airspace; the tower is open and active (0700–2200 local).
You are 400 ft AGL, climbing through 80 KIAS (Vy, best rate of climb), heading 090°, when the engine begins to run rough. Power is noticeably down — the tachometer is dropping. The airplane is still climbing, but the climb rate is deteriorating. The runway is behind you; open fields and pasture are ahead and to your left and right.
Aircraft: Cessna 182 Skylane, solo, full fuel, within limits. Continental O-470 carbureted engine, constant-speed prop, cowl flaps set for climb cooling, steam panel, fuel selector on BOTH. Nothing was written up; the airplane was airworthy at departure.
Pilot: you — a Commercial pilot with a high-performance endorsement, current, roughly 400 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 did not immediately recognize the roughness as carb ice.
- {'label': 'Field', 'value': 'KBKV · Brooksville–Tampa Bay'}
- {'label': 'Runways', 'value': '3/21 · 9/27'}
- {'label': 'Elevation', 'value': '76 ft'}
- {'label': 'Aircraft', 'value': 'C182'}
- {'label': 'Dominant phase', 'value': 'Landing / Cruise'}
The decision
Before we get into the decision tree — what do you already know about engine failure at low altitude and the 'impossible turn'? (Pick all that apply; this records your baseline.)
What the record shows
What the NTSB files show
NTSB SEA05FA034 (2005, FATAL): A Piper PA-30 Twin Comanche lost engine power shortly after takeoff from Charleston International Airport. The pilot attempted to return to the runway but collided with terrain between runways during the attempted emergency return. The probable cause was fuel exhaustion due to inadequate preflight inspection and mismanagement of the fuel supply. The mechanism — low-altitude return attempt after power loss — is the same trap that kills single-engine pilots.
NTSB CEN15LA319 (2015): A Cessna 182E on a personal flight lost engine power shortly after takeoff. The pilot returned to the departure airport for a forced landing. The reason for the loss of power could not be determined despite engine examination, though weather conditions were conducive to carburetor icing. This case is the C182-specific precedent: a carbureted Continental O-470, warm moist air, and a power loss that could not be explained by mechanical failure.
NTSB GAA18CA552 (2018): A Cessna 182 returned to the departure airport for a precautionary landing after the engine began running rough with high cylinder head temperature. The accident resulted from the pilot's improper landing flare, which caused a hard bounced landing. The lesson: even a successful return to the airport can end badly if the approach and landing are not flown with discipline. The C182 is nose-heavy and fast; a soft, flat approach floats, and the nose drops into a porpoise.
NTSB WPR17FA152 (2017, FATAL): A Jansen Pazmany PL-2 lost engine power shortly after takeoff. The pilot attempted to return to the runway but stalled and spun at approximately 200 feet AGL, impacting terrain in a near-vertical attitude. The probable cause was fuel starvation and the pilot's decision to return to the runway at low altitude, which led to an aerodynamic stall and spin.
NTSB LAX93LA048 (1992, FATAL): A Rans S-10 Sakota experienced engine power loss shortly after takeoff and stalled/spun while maneuvering to land at 150–200 feet. The accident resulted from loss of engine power and pilot failure to maintain airspeed above stall speed, with insufficient altitude for recovery.
NTSB ERA14FA123 (2014, FATAL): A Sonex experimental aircraft experienced partial engine power loss due to an improperly seated spark plug during initial climb. The pilot made a steep 180-degree turn back toward the airport at low altitude, resulting in a stall and spiral descent into a canal. The probable cause was the pilot's failure to maintain adequate airspeed during the emergency return.
NTSB CEN17LA238 (2017): An Aeronca 7BCM stalled during initial climb after takeoff when the pilot, having recognized a partial loss of engine power, continued the takeoff and subsequently initiated a turn at low altitude to avoid obstacles. The accident was attributed to the pilot's failure to abort the takeoff after recognizing power loss and his subsequent inability to maintain adequate airspeed during the turn.
The real accidents cited above occurred at other airports and in other aircraft — NOT at Brooksville–Tampa Bay Regional Airport (KBKV). KBKV has its own accident history (see field dominant patterns: hard landing 26.9%, forced landing 11.5%, runway excursion 11.5%), but these specific stall/spin and impossible-turn events happened elsewhere. The scenario is localized to KBKV to make the off-field environment real and consequential for you as a student here.
The consistent thread across all these events: after engine failure at low altitude, the pilot's instinct is to return to the runway. The aerodynamic reality is that a 180° turn back to the runway at 400 ft AGL requires a steep bank that induces a stall. The stall occurs, the airplane spins, and there is insufficient altitude for recovery. The only escape is to commit to a forward landing in the best available field ahead. Off Runway 09 at KBKV, that field is open developed land (parks, large lots), pasture, and hay — good forced-landing options. The runway is behind you; the field is ahead. Commit to the field.
Key lesson — The 'impossible turn' is a real aerodynamic trap: at 400 ft AGL after engine failure, a 180° turn back to the runway requires a steep bank that induces a stall. The altitude is insufficient for recovery. The only safe option is a forward landing in the best available field ahead. Off Runway 09 at KBKV, that field is open developed land, pasture, and hay — good forced-landing options. Commit to the field, not the runway.
Debrief — teaching points
The 'impossible turn' is a real aerodynamic trap, not a myth.
At 400 ft AGL after engine failure, the pilot's instinct is to turn back to the runway. The aerodynamic reality is that a 180° turn requires a steep bank (roughly 25–30° in a C182) that increases the stall speed. At 80 KIAS in a 30° bank, the stall speed is roughly 63 KIAS — only 17 KIAS of margin. The stall occurs, the airplane spins, and there is insufficient altitude for recovery. The NTSB cases WPR17FA152, LAX93LA048, ERA14FA123, and CEN17LA238 all show the same pattern: steep turn at low altitude → stall → spin → impact. The only escape is to commit to a forward landing in the best available field ahead.
Carburetor ice in the C182 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 KBKV. You do not need visible ice, freezing temperatures, or IMC. Warm, moist air at reduced power is the classic carb-ice environment. The C182's Continental O-470 is carbureted; it has no fuel injection or alternate air system. Carburetor heat is the only tool.
The first symptom is subtle — a dropping tachometer and engine roughness.
In a constant-speed prop airplane like the C182, carburetor ice first shows as engine roughness and an unexplained RPM decrease. The prop governor tries to maintain RPM, but the ice restricts airflow. 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.
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.
Off Runway 09 at KBKV, the off-field environment is open developed land, pasture, and hay — good forced-landing options.
The USGS NLCD ground cover off Runway 09's departure end (heading 090°) is open developed (parks, large lots), pasture, hay, and medium development. There are no water hazards, no dense forest, no urban obstacles. If the engine quits on the Runway 09 departure and altitude is insufficient to return to the airport, the outcome is a controlled forced landing in open field — survivable. Know the off-field environment before you line up on the runway. It drives your decision-making at low altitude.
Proactive carb heat use in conducive conditions is not optional.
The C182 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 400 ft AGL is waiting too long.
Built from the real accident record
Scenario built from NTSB SEA05FA034 (2005 PA-30 impossible turn / fuel exhaustion), GAA18CA552 (2018 C182 hard landing after precautionary return), CEN15LA319 (2015 C182 power loss / carburetor icing conditions), and regional precedents WPR17FA152, LAX93LA048, ERA14FA123, CEN17LA238 (all stall/spin on attempted low-altitude return to runway). Real accidents occurred at other airports — NOT at Brooksville–Tampa Bay Regional (KBKV).
NTSB reports: SEA05FA034 · GAA18CA552 · GAA17CA361 · CEN15LA319 · WPR17FA152 · LAX93LA048 · ERA14FA123 · CEN17LA238
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 Cessna 182 Skylane scenarios · More scenarios at KBKV