Rough Climb Over Brooksville
Partial engine power loss on initial climb from Runway 03 — no good forced-landing option ahead, and the decision window is seconds
The scenario
Departing Brooksville–Tampa Bay Regional Airport (KBKV), Brooksville, FL — Runway 03, climbing out on a 026° heading. Elevation 76 ft MSL. It is a warm, humid Florida morning in late spring: OAT 27°C, dew point 21°C, altimeter 29.94. Scattered clouds at 2,800 ft, light rain shower two miles to the east. Visibility 9 SM. The classic Gulf Coast environment — warm, moist air, reduced visibility, and exactly the conditions the FAA icing probability chart marks as conducive to carburetor ice even at cruise power.
You are 350 ft AGL, climbing through 68 KIAS (Vy, best rate of climb), heading 026°, when the engine begins to run rough. Power is noticeably down — the tachometer is dropping. Ahead and to the left is medium-density residential development; to the right is pasture and open lots. Behind you is the runway. The tower is open and aware of your departure. You are in Class D airspace.
Aircraft: Cessna 150M, solo, full fuel (26 gal usable), within limits. Continental O-200-A, 100 hp, carbureted, fixed-pitch prop, fuel selector on BOTH. Nothing was written up; the airplane was airworthy at departure. The engine ran smoothly during run-up.
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 did not anticipate icing conditions in warm air.
The C150 is a marginal-climb airplane, especially at gross weight in heat. Vy at sea level is 68 KIAS; best glide is 60 KIAS. The airplane climbs at roughly 300–400 fpm in these conditions. An engine failure or partial power loss at 350 ft AGL over residential development leaves almost no margin for error.
- {'label': 'Field', 'value': 'KBKV · Brooksville–Tampa Bay'}
- {'label': 'Runways', 'value': '3/21 · 9/27'}
- {'label': 'Elevation', 'value': '76 ft'}
- {'label': 'Aircraft', 'value': 'C150'}
- {'label': 'Dominant phase', 'value': 'Landing / Cruise'}
The decision
Before we get into the decision tree — what do you already know about engine failure on initial climb in the C150? (Pick all that apply; this records your baseline.)
What the record shows
What the NTSB files show
NTSB CEN23FA401 (2023): A Cessna 150K on an instructional flight experienced partial engine power loss due to fuel system blockage. The flight instructor failed to maintain adequate airspeed after the power loss, and the airplane entered an aerodynamic stall at low altitude. The accident was fatal. The probable cause was fuel starvation caused by a fuel system blockage and the flight instructor's failure to maintain airspeed discipline after the power loss.
NTSB CEN23FA077 (2023): A Cessna 150H on an instructional flight conducted a night visual approach to a non-towered airport in dark conditions. The flight instructor failed to apply carburetor heat, and the engine lost power due to carburetor icing. The aircraft descended below safe altitude and impacted a farm field 1.2 miles short of the runway. The accident was fatal. The probable cause was the flight instructor's failure to apply carburetor heat and subsequent failure to maintain control while maneuvering for a forced landing.
NTSB WPR09FA326 (2009): A Cessna 150 on a personal flight from Lake Tahoe Airport entered a spin seconds after takeoff at approximately 100 feet AGL. The accident resulted from partial loss of engine power due to a malfunctioning carburetor and the pilot's failure to maintain adequate airspeed while maneuvering to return to the runway. High density altitude was a contributing factor. The accident was fatal.
NTSB CHI92DER01 (1992): A Goehring Quickie lost engine power during initial climb after a touch-and-go landing and made a forced landing in a residential area after descending through trees and a house. The accident resulted from carburetor ice, with lack of suitable terrain for forced landing as a contributing factor. The pilot attempted to 'milk it around' over populated areas rather than committing early to the best available forced-landing site.
NTSB CHI03LA083 (2003): An amateur-built Steen Skybolt experienced partial engine power loss during takeoff. The pilot attempted to return to the runway, landing short in a field. The accident resulted from the pilot's improper decision to attempt a marginal runway return from low altitude rather than accepting a forced landing in the available field.
The real accidents cited above occurred at other airports and in other aircraft — NOT at Brooksville–Tampa Bay Regional Airport. KBKV has its own accident history (hard landings, forced landings, runway excursions), but these specific fatal 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: engine anomalies on initial climb in the C150 are unforgiving. The airplane climbs at only 300–400 fpm at gross weight in warm conditions. At 350 ft AGL with partial power loss, the decision window is measured in seconds — not minutes. Carburetor ice is the most common cause; the fix is immediate full carb heat. If power does not restore quickly, the forced-landing decision must be made and committed to fully, not stretched or delayed. Attempting to 'milk it back' to the runway from 300–350 ft AGL over development risks landing short in worse terrain or stalling the airplane in a bank.
Key lesson — In warm, moist Gulf Coast air, the C150's carbureted Continental O-200-A 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 over development, the decision window is measured in seconds. If power does not restore quickly, commit to a controlled forced landing in the best available site — pasture or open lot — rather than attempting a marginal return to the runway. The C150's marginal climb (300–400 fpm at gross in warm conditions) means altitude is your only asset; do not waste it trying to stretch a glide.
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 morning 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 C150's Continental O-200-A is carbureted; it has no alternate air system. Carburetor heat is the only tool.
The first symptom is subtle — a dropping tachometer and engine roughness.
In a fixed-pitch airplane like the C150, 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.
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 C150 is a marginal-climb airplane — altitude is your only asset in an emergency.
The C150 climbs at roughly 300–400 fpm at gross weight in warm, high-density-altitude conditions. Vy (best rate of climb) is 68 KIAS. At 350 ft AGL with partial power loss, you are consuming altitude at roughly 200 fpm while trying to diagnose and recover from the problem. The decision window is measured in seconds, not minutes. Proactive carburetor heat use before the symptom appears is not optional — it is the margin between a successful recovery and a forced landing.
At KBKV Runway 03, an engine failure on departure is a forced landing in development.
The off-field environment off Runway 03's departure end (heading 026°) is a mix of residential development, pasture, and open lots. There is no water, but there is no clear field either. If the engine quits on the Runway 03 departure and altitude is insufficient to return to the airport, the outcome is a forced landing in the best available site — pasture or open lot, not residential structures. This is not a worst-case scenario; it is the geographic reality. Best glide is 60 KIAS. Doors unlatched before touchdown. 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 03.
The C150's light wing loading makes it gust-sensitive and stall-prone on base-to-final.
The C150 has a light wing loading and is sensitive to stalls, especially on the base-to-final turn in a bank with reduced power or gusting winds. If you are attempting a partial-power return to the runway from 300 ft AGL, maintain a straight-in approach or a very shallow pattern. Do not attempt a full downwind-to-base-to-final sequence at low altitude with a sick engine — the bank, the gust sensitivity, and the reduced power create a stall trap. Airspeed discipline is critical: maintain at least 60 KIAS (best glide) and do not let the airplane slow below that in a turn.
Built from the real accident record
Scenario built from NTSB CEN23FA401 (2023 C150K fuel starvation / stall on descent), CEN23FA077 (2023 C150H carburetor ice / night approach), CEN17FA281 (2017 C150F engine roughness over water), WPR09FA326 (2009 C150 carburetor malfunction / spin on takeoff), and local-environment precedents CHI92DER01 (1992 engine-out over residential), CHI03LA083 (2003 partial power loss / forced landing), WPR12LA092 (2012 partial power loss over congested area), FTW85LA278 (1985 engine failure / forced landing over highway). Anonymized and localized to KBKV.
NTSB reports: CEN23FA401 · CEN23FA077 · CEN17FA281 · WPR09FA326 · CHI92DER01 · CHI03LA083 · WPR12LA092 · FTW85LA278
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 150M scenarios · More scenarios at KBKV