Rough Climb from Brooksville
Partial power loss on initial climb in a Piper Cherokee 180 — carburetor ice, fuel starvation, or maintenance failure? The decision window is narrow.
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.
It is a hazy Florida afternoon in late spring: OAT 27°C, dew point 21°C, altimeter 29.91. Scattered clouds at 2,800 ft, light rain shower three miles to the northeast. Visibility 9 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 350 ft AGL, climbing through 72 KIAS (near Vy of 74 KIAS), heading 090°, when the engine begins to run rough. Power is noticeably down — the tachometer is dropping. The off-field environment ahead is open developed land (parks, large lots) and pasture — workable forced-landing terrain. KBKV's tower is part-time (0700–2200) and is open; you are in Class D airspace.
Aircraft: Piper Cherokee 180, solo, full fuel (both tanks), within limits. Carbureted Lycoming O-360-A, fixed-pitch prop, steam panel, fuel selector on RIGHT (you switched from LEFT after takeoff per standard practice). Nothing was written up; the airplane was airworthy at departure.
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 immediately recognize the roughness as icing rather than a transient hiccup.
- {'label': 'Field', 'value': 'KBKV · Brooksville–Tampa Bay'}
- {'label': 'Runways', 'value': '3/21 · 9/27'}
- {'label': 'Elevation', 'value': '76 ft'}
- {'label': 'Aircraft', 'value': 'PA-28-180'}
- {'label': 'Dominant phase', 'value': 'Landing / Cruise'}
The decision
Before we get into the decision tree — what do you already know about the Piper Cherokee 180's fuel system and carburetor icing? (Pick all that apply; this records your baseline.)
What the record shows
What the NTSB files show
NTSB ATL03LA148 (2003): A Piper PA-28-180 on a personal flight experienced engine power loss during takeoff climb after extended ground operation in conditions favorable for carburetor icing. The probable cause was the pilot's failure to apply carburetor heat prior to takeoff, allowing ice to form in the induction system. The pilot had not applied carb heat during the run-up because the engine ran smoothly — exactly the complacency trap in this scenario.
NTSB DEN07CA035 (2006): A Piper PA-28-180 on a personal flight lost engine power on base leg due to carburetor icing and made a forced landing attempt on a road. The pilot swerved to avoid car lights and struck a tree, resulting in substantial damage. The probable cause was carburetor icing in conditions conducive to serious icing. The lesson: when forced landing is inevitable, pick the smoothest, most open terrain available — do not try to thread the needle between obstacles.
NTSB NYC03LA096 (2003): A Piper PA-28-180 on an instructional flight experienced partial engine power loss on initial climb after takeoff and made a forced landing in a field. The accident resulted from an inadequate 100-hour inspection that failed to detect a loose fuel line connection. This is a maintenance failure, not a pilot error — but the pilot's response (forced landing in a field) was correct.
NTSB ANC25LA094 (2025): A Piper PA-28-180 experienced partial engine power loss with vibration during climb-out and made a forced landing in terrain. The accident resulted from engine malfunction that prevented continued climb. The pattern across all these events: partial power loss on climb-out is survivable if the pilot recognizes it early, applies the correct response (carb heat, fuel selector check, or return to airport), and does not delay.
The real accidents cited above occurred at other airports and in other aircraft types — NOT at Brooksville–Tampa Bay Regional Airport. 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 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: carburetor ice in the PA-28-180 is insidious. It builds gradually, the first symptom is roughness and a dropping tachometer (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.
Key lesson — In warm, moist Gulf Coast air, the PA-28-180's carbureted O-360-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 on climb-out, the decision window is measured in seconds — not minutes. Off Runway 09 at KBKV, the off-field environment is open developed land and pasture: workable forced-landing terrain. A delayed response means a forced landing, not a return to the airport.
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 KBKV. You do not need visible ice, freezing temperatures, or IMC. Warm, moist air at reduced power is the classic carb-ice environment. The PA-28-180's Lycoming O-360-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 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.
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 PA-28-180 fuel selector is LEFT / RIGHT only — no BOTH position.
This is the signature difference from Cessna fuel systems. The PA-28-180 requires active tank switching. Running a selected tank dry — or taking off on a near-empty tank — is the classic starvation trap. On climb-out, if the engine roughens, a fuel selector switch to the other tank is a valid diagnostic step. But do not confuse a fuel starvation roughness (which improves with a selector switch) with carburetor ice (which requires carb heat). Know your fuel gauges before takeoff and switch tanks on a schedule, not on demand.
At KBKV Runway 09, an engine failure on departure is a forced landing in open terrain.
The off-field environment off Runway 09's departure end (heading 090°) is open developed land (parks, large lots) and pasture. There is no water, no dense forest. This is workable forced-landing terrain. 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 that open terrain. Best glide is 65 KIAS. Fuel selector on the fullest tank. 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 09.
Proactive carb heat use in conducive conditions is not optional.
The PA-28-180 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 350 ft AGL over open terrain is waiting too long.
Built from the real accident record
Scenario built from NTSB DEN07CA035 (2006 PA-28-180 carburetor ice on base leg), ATL03LA148 (2003 PA-28-180 carb ice on takeoff climb), NYC03LA096 (2003 PA-28-180 loose fuel line / 100-hour inspection failure), and ANC25LA094 (2025 PA-28-180 partial power loss on climb-out). Anonymized and localized to KBKV.
NTSB reports: DEN07CA035 · ATL03LA148 · NYC03LA096 · ANC25LA094
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.
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