Rough Climb Over Tampa Bay

Departing St. Petersburg Clearwater International Airport (KPIE), Pinellas Park, FL — Runway 04, climbing out on a 040° heading. Elevation 11 ft MSL; the runway is essentially at sea level. You are a commercial pilot with a high-performance endorsement, current in the Cessna 182 Skylane.

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 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 450 ft AGL, climbing through 80 KIAS (Vy, best rate of climb), heading 040°, when the engine begins to run rough. Power is noticeably down — the tachometer is dropping and the manifold pressure is unwinding. The water of Tampa Bay fills the windscreen ahead. KPIE's tower is active (0600–2300 local); you are in Class D airspace, ceiling 1,600 ft MSL.

Aircraft: Cessna 182 Skylane, solo, full fuel, within limits. Continental O-470, 230 hp, carbureted, constant-speed prop, cowl flaps, 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 heads-down on the climb and prop management.

Pilot: you — a Commercial pilot, high-performance endorsed, roughly 800 hours total, 120 hours in the C182. You know the airplane's systems. You did not brief the off-field environment before departure. Off Runway 04's climb-out (heading 040°), the NLCD ground cover is open water and open developed areas — Tampa Bay. An engine failure on this departure at low altitude is a ditching, not a field landing.

NTSB CEN19FA008 (2018): A Cessna 182 on a cross-country flight from California to New Mexico encountered 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 being a fractured carburetor heat control cable that rendered the carburetor heat inoperative. The pilot did not survive.

NTSB NYC07FA145 (2007): 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, with a contributing factor being the pilots' failure to maintain adequate airspeed during the forced landing. Both occupants were fatally injured.

NTSB ATL04FA069 (2004): 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 being 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 loss of engine power due to carburetor icing.

The local environment at KPIE makes the Runway 04 departure particularly unforgiving: off Runway 04's climb-out (heading 040°), the off-field environment is open water — Tampa Bay. An engine failure on the Runway 04 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.

NTSB LAX89LA222 (1989, fatal): A Grumman AA-1C stalled on final approach to a coastal airport after an unstable low-altitude approach in gusting winds. The airplane impacted the water short of the runway. The mechanism — low altitude, low airspeed, pilot trying to stretch the approach to the runway — is the same trap that kills pilots who delay the ditching decision and try to glide to the runway instead.

The real accidents cited above occurred at other airports and in other aircraft — NOT at KPIE. KPIE has its own accident history (loss of control in flight 21.2%, loss of control on ground 15.2%, stall/spin 12.1%, gear-up landing 9.1%, obstacle on takeoff/landing 9.1%), but these specific carburetor ice events happened elsewhere. The scenario is localized to KPIE 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 dropping tachometer/manifold pressure (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.