Rough Climb Over the Bay
Carburetor ice, partial power loss, and a high-performance Cessna 182 — the decision window is measured in seconds
The scenario
Departing Sarasota Bradenton International Airport (KSRQ), Runway 22, climbing out on a 218° heading over the coastal bay environment. Elevation 30 ft MSL; the runway is essentially at sea level. You are a high-performance endorsement holder — this is a Cessna 182 Skylane, not a 172. The Continental O-470 is carbureted, constant-speed prop, cowl flaps, and 230 hp. The workload is higher than a fixed-pitch airplane, and the energy is greater.
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 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.' The C182's carbureted O-470 is particularly susceptible in these conditions.
You are 450 ft AGL, climbing through 80 KIAS (Vy, best rate of climb), heading 218°, with the prop set to 2,500 RPM and cowl flaps open for climb cooling. The engine begins to run rough. Power is noticeably down — the manifold pressure gauge is sagging and the tachometer is unwinding. The bay and low-density development fill the windscreen ahead. KSRQ's tower is open (0600–0000 local) and is aware of your departure; you are in Class C airspace.
Aircraft: Cessna 182 Skylane, solo, full fuel, within limits. Carbureted Continental O-470, constant-speed prop, fixed gear, fuel selector on BOTH. Nothing was written up; the airplane was airworthy at departure. 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 prop and cowl flap management — the high-performance workload.
Pilot: you — a Commercial pilot with high-performance endorsement, roughly 400 hours total, 80 hours in type. You are current and competent in the C182, but you are not a carb-ice expert. You know it exists; you have not experienced it in flight. The conditions that cause it are not obvious to you at this moment.
- {'label': 'Field', 'value': 'KSRQ · Sarasota Bradenton'}
- {'label': 'Runways', 'value': '4/22 · 14/32'}
- {'label': 'Elevation', 'value': '30 ft'}
- {'label': 'Aircraft', 'value': 'C182'}
- {'label': 'Dominant phase', 'value': 'Takeoff / Landing'}
The decision
Before we get into the decision tree — what do you already know about carburetor ice in the C182 Skylane? (Pick all that apply; this records your baseline.)
What the record shows
What the NTSB files show
NTSB CEN19FA008 (2018, FATAL): A Cessna 182 on a cross-country flight from California to New Mexico experienced partial engine power loss due to induction system icing. The pilot attempted to reach Albuquerque but could not maintain altitude and made a forced landing on terrain near Canoncito, New Mexico. The probable cause was partial loss of engine power due to induction system icing, with a contributing factor: a fractured carburetor heat control cable that rendered the carburetor heat inoperative. The pilot had no way to apply heat.
NTSB NYC07FA145 (2007, FATAL): A Cessna 182C on an instructional flight experienced carburetor icing, resulting in loss of engine power. The pilot and instructor failed to maintain airspeed during the forced landing, resulting in a stall. The probable cause was carburetor icing and the pilots' failure to maintain adequate airspeed (best glide speed of 70 KIAS) during the forced landing. The stall was the fatal event.
NTSB ATL04FA069 (2004, FATAL): A Cessna 182A on a personal flight lost engine power due to carburetor ice during cruise and made a forced landing in a field near Traphill, North Carolina. The probable cause was loss of engine power due to carburetor ice, with contributing factors including atmospheric conditions conducive to carburetor icing.
NTSB WPR25LA175 (2025): A Cessna 182P descended at low power without carburetor heat in conditions conducive to icing. The engine lost power on base leg, and the pilot made a forced landing on a gravel bar, damaging the nose gear and forward fuselage. The probable cause was the pilot's failure to use carburetor heat, which resulted in a loss of engine power due to carburetor icing.
The local environment at KSRQ makes this scenario particularly unforgiving: Runway 22's departure end (heading 218°) is open water and low-density development — Tampa Bay and the coastal environment. An engine failure on the Runway 22 departure at low altitude is a ditching, not a field landing. There is no open field, no road, no park. The water is the off-field environment. This is not hypothetical; it is the NLCD ground cover off that runway end.
The real accidents cited above occurred at other airports and in other aircraft — NOT at Sarasota Bradenton International Airport. KSRQ has its own accident history (see field dominant patterns: LOSS_OF_CONTROL_GROUND 19.2%, FORCED_LANDING 15.4%, RUNWAY_EXCURSION 11.5%), but these specific carburetor ice events happened elsewhere. The scenario is localized to KSRQ to make the off-field environment real and consequential for you as a student here.
The consistent thread across all these events: carburetor ice in the C182 is insidious. It builds gradually, the first symptom is roughness and a sagging manifold pressure gauge (not a dramatic power cut), and by the time it is obvious, it may be too late for a comfortable recovery. The fix — full carburetor heat, immediately, at the first sign of roughness in conducive conditions — is simple. The failure is always a delay. In CEN19FA008, the carburetor heat cable was broken; the pilot had no option. In NYC07FA145 and ATL04FA069, the pilots did not apply carb heat early enough. In WPR25LA175, the pilot did not apply it at all.
Key lesson — In warm, moist Gulf Coast air, the C182's carbureted Continental O-470 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 manifold pressure loss. At low altitude over water (Runway 22 departure), the decision window is measured in seconds — not minutes. Off Runway 22 at KSRQ, the off-field environment is open water: a delayed response means a ditching, not a field landing. Maintain best glide speed (70 KIAS) and manage the constant-speed prop (reduce RPM to 1,500 for descent) if power is lost.
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 KSRQ. 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 carbureted Continental O-470 is particularly susceptible. Carburetor heat is the only tool.
The first symptom is subtle — a sagging manifold pressure gauge and engine roughness.
In the C182, carburetor ice first shows as engine roughness and an unexplained drop in manifold pressure. There is no dramatic power cut. Pilots who are not actively monitoring the manifold pressure gauge miss the early warning. By the time the roughness is obvious, significant ice has accumulated. Scan the manifold pressure gauge as part of your regular instrument scan, especially in conducive conditions. The constant-speed prop complicates the picture: if you are managing RPM, you may not notice the manifold pressure drop immediately.
Apply full carburetor heat — not partial — and expect an initial manifold pressure drop.
When you apply carb heat to an iced carburetor, the manifold pressure 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 manifold pressure drops — that is the heat working. Hold it full on. The manifold pressure 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.
At KSRQ Runway 22, an engine failure on departure is a ditching.
The off-field environment off Runway 22's departure end (heading 218°) is open water — the bay and coastal environment. There is no alternate landing surface. If the engine quits on the Runway 22 departure and altitude is insufficient to return to the airport, the outcome is a ditching. This is not a worst-case scenario; it is the geographic reality. Best glide is 70 KIAS. Reduce prop RPM to 1,500 for descent (less drag). Doors unlatched before water contact. Master off just before impact. Flaps for slowest possible touchdown speed — impact energy rises with the square of touchdown speed, so the slowest possible speed matters most. Know this before you line up on Runway 22.
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 manifold pressure drop, then recovery) and considering its use during climb in visible moisture or high humidity. Waiting for the roughness to appear at 450 ft AGL over the bay is waiting too long.
The C182's constant-speed prop and cowl flaps add workload — manage them proactively.
The C182 is a high-performance airplane: constant-speed prop (RPM management), cowl flaps (cooling management), and 230 hp. In an emergency descent, you need to manage all three: reduce throttle, reduce prop RPM to 1,500 (less drag, easier descent), and close cowl flaps (less cooling drag). The workload is higher than a fixed-pitch airplane. Practice this sequence on the ground and in the simulator before you need it in flight.
Maintain best glide speed (70 KIAS) during a forced landing — do not stall.
NTSB NYC07FA145 is a stark reminder: the pilot and instructor failed to maintain airspeed during the forced landing and stalled. The stall was the fatal event. Best glide speed for the C182 is 70 KIAS at gross weight. Maintain it. Do not try to stretch the glide by slowing below best glide — that is a stall trap. If you cannot reach the airport at best glide, commit to the best available off-field landing or ditching. The stall is worse than the landing.
Built from the real accident record
Scenario built from NTSB CEN19FA008 (2018 C182 induction icing / forced landing), NYC07FA145 (2007 C182C carburetor ice / stall on landing), ATL04FA069 (2004 C182A carburetor ice / forced landing), WPR25LA175 (2025 C182P carburetor heat failure / forced landing), and regional crosswind precedents GAA17CA105, ERA17CA149, GAA16CA149. Anonymized and localized to KSRQ.
NTSB reports: CEN19FA008 · NYC07FA145 · ATL04FA069 · WPR25LA175 · GAA17CA105 · ERA17CA149 · GAA16CA149
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 · PA.V.A — Constant-Speed Propeller Operations
Relevant FARs: §91.3 · §91.13 · §91.185 · §61.31
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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