Power Loss on the Climb — Runway Selection and Off-Field Reality
A Diamond DA40 engine failure at 400 ft AGL forces an immediate off-airport landing decision. The runway you depart determines your options.
The scenario
Departing St. Petersburg Clearwater International Airport (KPIE), Pinellas Park, FL — Runway 04, climbing out on a 040° heading. Elevation 11 ft MSL. It is a clear, calm morning; OAT 18°C, altimeter 30.01, winds calm. Visibility unlimited. A routine local flight in a Diamond DA40 — the airplane is within limits, fuel is full, and the preflight was clean.
You are 400 ft AGL, climbing through 66 KIAS (Vy, best rate of climb), when the engine begins to lose power. The manifold pressure gauge is unwinding. The tachometer is dropping. The airplane is no longer climbing — it is maintaining altitude at best. You have roughly 30 seconds of useful decision time before altitude becomes critical. The airport is behind you. Ahead and to your left (north) is open water — Tampa Bay. To your right (south and east) is dense residential and commercial development.
Aircraft: Diamond DA40, solo, full fuel (48 gallons usable), within CG limits. Lycoming IO-360-M1A, fuel-injected, constant-speed prop, fixed gear. The 100-hour inspection was completed 15 hours ago. Nothing was written up; the airplane was airworthy at departure. You did not notice any anomalies during the run-up.
Pilot: you — a Commercial pilot, current, roughly 800 hours total. You are familiar with KPIE but have not flown from here in six months. You elected Runway 04 because it was the active runway and the tower was available. You did not brief the off-field environment before takeoff.
- {'label': 'Field', 'value': 'KPIE · St. Petersburg Clearwater'}
- {'label': 'Runways', 'value': '4/22 · 18/36'}
- {'label': 'Elevation', 'value': '11 ft'}
- {'label': 'Aircraft', 'value': 'DA40'}
- {'label': 'Dominant phase', 'value': 'Takeoff / Landing'}
The decision
Before we get into the decision tree — what do you already know about engine failures in the DA40 and forced-landing site selection? (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 reduced intake air caused the power loss. The pilot made a forced landing to a school field. The probable cause was the turbocharger housing fatigue failure.
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 probable cause was a mechanic's failure to properly tighten the two clamps securing the flexible induction coupling from the intercooler to the induction inlet during a 100-hour inspection performed 15 hours before the accident. A loose clamp allowed the coupling to separate, reducing intake air and causing the power loss.
NTSB ERA18LA241 (2018): A Diamond DA40 experienced 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 loss of engine power could not be determined based on postaccident examination, which revealed no evidence of mechanical malfunctions or failures.
The local environment at KPIE makes runway selection critical: Off Runway 04 (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. Off Runway 22 (heading 220°), the off-field environment is dense development — houses, roads, power lines, trees. Off Runways 18/36, the environment is marginal (medium development, parks) or ditching (open water). The runway you depart from determines your forced-landing options.
The real accidents cited above occurred at other airports — NOT at KPIE. ERA23LA285 was a DA40 NG (diesel), not the IO-360 DA40 in this scenario. ERA19LA272 was the critical case: a loose induction coupling clamp 15 hours after a 100-hour inspection caused a partial power loss at 300 ft AGL. The pilot landed in a soybean field. 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: engine failures in the DA40 happen suddenly and at low altitude. The DA40's fuel selector has LEFT / RIGHT only — no BOTH position. A pilot who forgets to switch tanks or selects an empty tank risks fuel starvation. Post-maintenance failures (loose clamps, improperly torqued fasteners) can cause partial or total power loss within hours of a maintenance event. The first symptom is often a dropping manifold pressure and tachometer on the climb. The decision window is measured in seconds — not minutes.
Key lesson — In the DA40, an engine failure on takeoff or climb forces an immediate decision: return to the airport (if altitude and engine power permit) or prepare for a forced landing off-field. The runway you depart from determines your options — Runway 04 departure offers ditching or dense development; Runway 22 offers dense development; Runways 18/36 offer marginal or ditching options. Best glide is 73 KIAS. The fuel selector has LEFT / RIGHT only — confirm it is set correctly before and during the flight. Post-maintenance failures can occur within hours of a maintenance event; brief the mechanic on any anomalies during the run-up. Off Runway 04 at KPIE, the off-field environment is Tampa Bay: a failed engine means a ditching, not a field landing.
Debrief — teaching points
The DA40 fuel selector has LEFT / RIGHT only — no BOTH position.
Unlike some Cessnas, the DA40 has no BOTH position on the fuel selector. The pilot must actively manage LEFT and RIGHT tanks. A pilot who forgets to switch tanks or selects an empty tank risks fuel starvation. At the start of the flight, confirm which tank you are on and plan your tank-switching schedule. During an engine anomaly, the fuel selector is the first thing to check — confirm it is on the correct tank, not between positions. This is a DA40-specific risk.
Post-maintenance failures can occur within hours of a maintenance event.
NTSB ERA19LA272 is the critical case: a mechanic failed to properly tighten the two clamps securing the flexible induction coupling during a 100-hour inspection. The coupling was loose. The airplane flew fine for 15 hours, then on the next takeoff, the coupling separated and the engine lost power at 300 ft AGL. The pilot landed in a soybean field. Always brief the mechanic on any anomalies during the run-up after a maintenance event. If something feels off — rough running, sluggish response, unusual vibration — do not fly. Have the mechanic re-inspect the work.
Engine failure on takeoff or climb forces an immediate decision: return or prepare for a forced landing.
At 400 ft AGL with a failing engine, you have roughly 30 seconds of useful decision time. The first step is to diagnose: fuel selector correct? Prop control responding? Engine instruments normal? If the engine is losing power and diagnosis does not reveal a correctable issue, you must decide: do you have altitude and distance to return to the airport, or do you prepare for a forced landing off-field? This decision is made in seconds, not minutes. Hesitation costs altitude.
Best glide in the DA40 is 73 KIAS — establish it immediately if engine power is lost.
Best glide speed for the DA40 is 73 KIAS at gross weight. This speed maximizes glide distance and gives the most time and distance to manage the emergency. Establish 73 KIAS immediately if engine power is lost. Trim for hands-off flight. This is the speed to fly whether you are attempting to return to the airport or preparing for a forced landing off-field.
The runway you depart from determines your forced-landing options.
At KPIE, Runway 04 departure (heading 040°) puts you over open water — Tampa Bay. An engine failure on the Runway 04 departure at low altitude is a ditching, not a field landing. Runway 22 departure (heading 220°) puts you over dense residential and commercial development — houses, roads, power lines, trees. Runways 18/36 offer marginal or ditching options depending on the direction. Before you line up on a runway, brief the off-field environment. If the engine fails on departure, where will you go? This is not optional — it is the geographic reality of the field.
A controlled ditching is survivable; an uncontrolled crash is not.
If the engine fails and altitude is insufficient to return to the airport, a controlled ditching in open water is the correct outcome — not a stall/spin trying to stretch a glide to the runway or a crash in dense development. Best glide at 73 KIAS, doors unlatched before water contact, master off just before impact, flaps for slowest possible touchdown speed. The DA40's composite airframe is relatively robust in water impact. Survival rates in controlled ditchings are significantly better than in uncontrolled ones. Ditching is not failure — it is airmanship.
Built from the real accident record
Scenario built from NTSB ERA23LA285 (2023 DA40 turbocharger housing fatigue failure, partial power loss on climb), ERA19LA272 (2019 DA40 induction coupling failure, 300 ft AGL forced landing), and ERA18LA241 (2018 DA40 total power loss on approach). Localized to KPIE; real events occurred at other airports.
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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