Power Loss on Climb — Lakeland
Partial engine failure at 400 ft AGL, constant-speed prop management, and the off-field reality of Runway 28 — a forced-landing decision in real time
The scenario
Departing Lakeland Linder International Airport (KLAL), Lakeland, FL — Runway 28, climbing out on a 270° heading. Elevation 142 ft MSL. It is a clear, calm morning: OAT 18°C, altimeter 30.02, light winds from the northeast. Visibility 10 SM. A routine local flight in a Diamond DA40 — you are a commercial pilot with 800 hours total, current and proficient in the DA40.
You have completed a standard preflight and engine run-up. The engine started normally, all systems are green, fuel selector is set to LEFT (the left tank is full; right tank has 15 gallons). Prop control is set to high RPM (full forward). You are cleared for takeoff on Runway 28.
Rotation at 54 KIAS (Vr), liftoff at 60 KIAS. You are climbing at 66 KIAS (Vy, best rate of climb) with the gear fixed, flaps retracted. At 400 ft AGL, heading 270°, the engine begins to lose power. The manifold pressure gauge is dropping. The tachometer is unwinding. You are climbing over medium development, evergreen forest, and low-density residential areas — the off-field environment off Runway 28's climb-out is POOR. The airport is behind you. You have roughly 30 seconds to make a decision.
Aircraft: Diamond DA40, solo, fuel selector LEFT (full tank), right tank 15 gallons. Fuel-injected Lycoming IO-360-M1A, constant-speed prop, fixed gear, G1000 glass panel. The airplane was airworthy at departure; nothing was written up.
Pilot: you — a Commercial pilot, 800 hours total, current in the DA40. You did not perform an in-flight engine-failure drill before this flight. You have never executed a forced landing in actual conditions. You are about to.
- {'label': 'Field', 'value': 'KLAL · Lakeland Linder'}
- {'label': 'Runways', 'value': '5/23 · 10/28'}
- {'label': 'Elevation', 'value': '142 ft'}
- {'label': 'Aircraft', 'value': 'DA40'}
- {'label': 'Dominant phase', 'value': 'Landing / Takeoff'}
The decision
Before we get into the decision tree — what do you already know about engine failure in the DA40? (Pick all that apply; this records your baseline.)
What the record shows
What the NTSB files show
NTSB ERA23LA285 (2023): A Diamond DA40 NG experienced partial engine power loss during climb due to fatigue failure of the diesel engine's turbocharger housing. The loss of intake air pressure reduced engine power, forcing a descent. The pilot made a forced landing to a school field. The turbocharger housing had failed due to metal fatigue — a mechanical failure that could not have been detected by a standard preflight inspection. The accident was survivable because the pilot recognized the power loss early and made an immediate decision to return to the airport.
NTSB ERA19LA272 (2019): A Diamond DA40 on a personal local flight experienced a partial loss of engine power on takeoff at 300 feet AGL. The pilot made a forced landing to a soybean field. The postaccident investigation revealed that a mechanic had failed to properly tighten the two clamps securing the flexible coupling from the intercooler to the induction inlet during a 100-hour inspection performed 15 hours before the accident. The loose coupling allowed induction air to escape, reducing manifold pressure and engine power. This failure was entirely preventable — a proper inspection and tightening of the clamps would have prevented the accident.
NTSB ERA18LA241 (2018): A Diamond DA40 experienced a total loss of engine power while on downwind approach to Maury County Airport. The pilot performed a forced landing to a field approximately 1 mile short of the runway threshold. The postaccident examination revealed no evidence of mechanical malfunctions or failures. The cause of the power loss could not be determined. This case illustrates the reality of engine failures: sometimes the cause is never found, and the pilot's only option is a controlled forced landing.
The real accidents cited above occurred at other airports and in other aircraft — NOT at Lakeland Linder International Airport. KLAL has its own accident history (see field dominant patterns: LOSS_OF_CONTROL_INFLIGHT 23.7%, LOSS_OF_CONTROL_GROUND 19.4%, FORCED_LANDING 17.2%), but these specific NTSB cases happened elsewhere. The scenario is localized to KLAL to make the off-field environment real and consequential for you as a student here.
The consistent thread across all these events: engine failures in the DA40 happen suddenly and without warning. A mechanic's failure to tighten a coupling (ERA19LA272) or a turbocharger housing fatigue failure (ERA23LA285) can occur on a routine local flight. The pilot's response — immediate recognition, best glide speed (73 KIAS), and a return to the nearest airport — is the entire lesson. Off Runway 28 at KLAL, the off-field environment is POOR: medium development, evergreen forest, and low-density residential. A forced landing there is difficult and dangerous. The airport is 1.5 nm behind you on the departure — well within glide range. Returning to KLAL is always the better choice than continuing forward into POOR terrain.
The DA40's constant-speed prop is a tool: reducing prop RPM lowers the descent rate and extends glide distance. The fuel selector is a hazard: LEFT / RIGHT with no BOTH position means a mis-set or empty selected tank is a starvation risk. Know your airplane's systems before you need them in an emergency.
Key lesson — Engine failures in the DA40 happen suddenly. At 400 ft AGL on the Runway 28 departure, with a failing engine and POOR off-field terrain ahead, the correct decision is an immediate return to KLAL at best glide speed (73 KIAS). Reduce prop RPM to lower the descent rate. Request the longest available runway (Runway 10, 8500 ft) and a straight-in approach. The airport is 1.5 nm behind you — well within glide range. Returning to the airport is always the better choice than continuing forward into POOR terrain.
Debrief — teaching points
Engine failures in the DA40 happen suddenly and without warning.
NTSB ERA19LA272 shows a mechanic's failure to tighten induction coupling clamps — a failure that occurred 15 hours after a 100-hour inspection and manifested as partial power loss at 300 ft AGL on takeoff. ERA23LA285 shows a turbocharger housing fatigue failure that reduced intake air pressure and engine power during climb. Neither failure would be detected by a standard preflight inspection. The lesson: assume an engine failure can happen on any flight. Know your best glide speed (73 KIAS for the DA40), know the location of the nearest airport, and know the off-field environment around your departure runway. At 400 ft AGL on the Runway 28 departure, with POOR terrain ahead, the only safe option is an immediate return to KLAL.
Best glide speed is 73 KIAS — establish it immediately and maintain it.
Best glide speed for the DA40 at gross weight is 73 KIAS. This speed maximizes glide distance and gives the most time and distance to manage the emergency. At 400 ft AGL on the Runway 28 departure, 1.5 nm from KLAL, best glide speed (73 KIAS) gives you roughly 4–5 minutes of glide time — more than enough to return to the airport. Establish best glide speed immediately; do not try to climb or stretch the glide. The math is simple: distance = time × speed. At 73 KIAS, you cover 1.5 nm in roughly 1.2 minutes. You have time.
The DA40's constant-speed prop is a tool: reduce RPM to lower the descent rate.
The DA40 has a constant-speed propeller. In a power-loss scenario, reducing prop RPM (pulling the prop control back) decreases the load on the engine and lowers the descent rate. This extends glide distance and buys time. At 400 ft AGL with a failing engine, reducing prop RPM is one of the few things you can do to improve your situation. It does not restore power, but it improves your glide performance — and in a forced-landing scenario, every extra 100 ft of altitude and every extra 0.2 nm of distance matters.
The DA40 fuel selector is LEFT / RIGHT only — no BOTH position. Know which tank is selected.
The DA40 fuel selector has no BOTH position. You must select LEFT or RIGHT. A mis-set fuel selector or an empty selected tank is a starvation risk. In this scenario, you departed with the left tank full and the right tank at 15 gallons. Switching to the right tank during a power loss is a reasonable diagnostic step — but only if you know which tank is selected and how much fuel is in each. In a preflight, verify fuel quantity in both tanks and set the selector to the fuller tank for takeoff. In flight, monitor fuel quantity and switch tanks as needed. A fuel-starvation failure is entirely preventable.
Off Runway 28 at KLAL, the off-field environment is POOR — return to the airport is the only safe option.
The off-field environment off Runway 28's climb-out (heading 270°) is POOR: mostly medium development, evergreen forest, and low-density residential. There is no clear field, no road wide enough for a safe landing, no open space. A forced landing in that terrain is difficult and dangerous. At 400 ft AGL on the Runway 28 departure with a failing engine, the only safe option is an immediate return to KLAL. The airport is 1.5 nm behind you — well within glide range at best glide speed (73 KIAS). Returning to the airport is always the better choice than continuing forward into POOR terrain.
Request the longest available runway and a straight-in approach.
At KLAL, Runway 10 and Runway 28 are both 8500 ft long. Runway 05 is 5000 ft. In a forced-landing scenario, the longest runway gives you the most margin for error. A straight-in approach is the shortest path to the runway and requires the least maneuvering. If you are descending toward KLAL on the Runway 28 departure heading (270°), requesting Runway 10 (heading 090°) requires a 180° turn, but Runway 10 is aligned with your descent and is the longest. Requesting Runway 28 keeps you on your current heading but is slightly less favorable. Requesting Runway 05 (heading 045°) requires a 45° turn and is the shortest runway. In a forced-landing scenario, prioritize the longest runway and the most favorable descent geometry.
Built from the real accident record
Scenario built from NTSB ERA23LA285 (2023 DA40 NG turbocharger housing fatigue failure / partial power loss on climb), ERA19LA272 (2019 DA40 induction coupling failure / forced landing at 300 ft AGL), and ERA18LA241 (2018 DA40 total power loss on downwind). Anonymized and localized to KLAL.
NTSB reports: ERA23LA285 · ERA19LA272 · ERA18LA241
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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