Power Loss on Climbout — Off-Field Decision at KSPG
Engine failure at 300 ft AGL over Tampa Bay. The runway you chose determines whether you ditch or land on solid ground.
The scenario
Departing Albert Whitted Airport (KSPG), St. Petersburg, FL — Runway 07, climbing out on a 062° heading. Elevation 7 ft MSL. Clear skies, light winds from 090° at 4 kt, OAT 26°C, altimeter 29.92. Visibility 10 SM. A perfect VFR morning in Tampa Bay.
Aircraft: Diamond DA40, solo, full fuel (both tanks), within limits. Lycoming IO-360-M1A fuel-injected engine, constant-speed prop, fixed gear, G1000 glass panel. The airplane was released from a 100-hour inspection 18 hours ago. The mechanic's sign-off is in the logbook.
You are a Commercial pilot with 800 hours total, 120 in type. You completed a normal run-up: engine instruments green, prop cycle smooth, fuel selector on LEFT tank (you will switch to RIGHT at 500 ft AGL as part of your standard climb procedure). You are cleared for takeoff on Runway 07.
At 300 ft AGL, climbing at 66 KIAS (Vy, best rate of climb), the engine suddenly loses significant power. The manifold pressure drops from 28 inHg to 18 inHg. The engine is still running but producing only partial power — roughly 60% of normal. You are over Tampa Bay, heading 062°. The airport is behind you. You have seconds to decide: attempt to return to KSPG, or commit to an off-field landing ahead.
Runway 07's climb-out environment is open water — Tampa Bay. Runway 25's climb-out environment (heading 242°) is dense development — buildings, roads, no open fields. Runway 18 and Runway 36 are also available but require a turn. You are at 300 ft AGL with partial power. The decision window is measured in seconds.
- {'label': 'Field', 'value': 'KSPG · Albert Whitted'}
- {'label': 'Runways', 'value': '7/25 · 18/36'}
- {'label': 'Elevation', 'value': '7 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 failures in the DA40 and off-field landing priorities? (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 turbocharger housing. The pilot made a forced landing to a school field. The probable cause was the turbocharger housing fatigue failure, which reduced intake air and caused the power loss. The pilot's decision to land immediately on the available field prevented a more serious outcome.
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 during a 100-hour inspection performed 15 hours before the accident. The loose coupling allowed air to bypass the intake, reducing manifold pressure and power.
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 critical difference in this scenario: at Albert Whitted Airport (KSPG), Runway 07's departure environment is open water — Tampa Bay. An engine failure on the Runway 07 departure at 300 ft AGL over water is a ditching, not a field landing. The NTSB accidents cited above occurred at other airports with open fields available for forced landings. At KSPG, the runway choice at departure determines the outcome: Runway 07 departure over water = ditching; Runway 25 departure over land = field landing option.
The real accidents cited above occurred at other airports — NOT at Albert Whitted Airport. KSPG has its own accident history (see field dominant patterns: LOSS_OF_CONTROL_INFLIGHT 20%, FORCED_LANDING 16.4%, DITCHING 12.7%), but these specific NTSB events happened elsewhere. The scenario is localized to KSPG to make the off-field environment real and consequential for you as a student here.
The consistent thread across all these events: partial power loss in the DA40 is often caused by post-maintenance failures (loose couplings, improper assembly) or mechanical fatigue (turbocharger housing). The engine is still running, but manifold pressure is low. The pilot has time to diagnose and decide — but only if the off-field environment is survivable. At KSPG, that decision is runway-dependent.
Key lesson — In the DA40, a partial power loss on takeoff or climb may be caused by induction system failures (loose couplings, turbocharger issues) or fuel system problems — not always total engine failure. You have time to troubleshoot and decide. But at KSPG, the runway you choose at departure determines your off-field options: Runway 07 departure (heading 062°) is over open water — a ditching; Runway 25 departure (heading 242°) is over dense development — a forced landing in buildings and roads. If you depart Runway 07 and lose power at 300 ft AGL, your only option is a controlled ditching in Tampa Bay. Know this before you line up.
Debrief — teaching points
Partial power loss in the DA40 is often post-maintenance or mechanical — not always total engine failure.
NTSB ERA19LA272 shows a loose induction coupling left untightened after a 100-hour inspection — the mechanic's error caused the power loss 15 hours later on takeoff at 300 ft AGL. NTSB ERA23LA285 shows a turbocharger housing fatigue failure. These are not catastrophic engine failures; they are partial power losses that give the pilot time to diagnose and decide. Check the engine instruments: manifold pressure, RPM, fuel flow. A low manifold pressure with normal RPM suggests an induction system problem. Low fuel flow suggests a fuel system problem. Troubleshooting takes 10–15 seconds and may reveal a fixable issue (fuel selector, prop control) or confirm a mechanical failure requiring an immediate landing.
The DA40 fuel selector is LEFT / RIGHT with no BOTH position — tank selection is a pilot responsibility.
Unlike Cessnas with a BOTH position, the DA40 requires the pilot to actively select LEFT or RIGHT. An empty or low selected tank is a starvation risk. At KSPG, your standard climb procedure should include a fuel selector switch to the RIGHT tank at 500 ft AGL (or earlier if you depart on Runway 25 and want to balance fuel burn). Know which tank you are on at all times. If you experience a sudden power loss, fuel selector is one of the first checks — but do not assume it is the problem without confirming low fuel flow on the G1000.
Best glide in the DA40 is 73 KIAS — that is the speed to fly immediately if power is lost.
At 73 KIAS, the DA40 achieves maximum glide distance and gives you the most time and distance to manage the emergency. This is true whether you are returning to the airport or committing to an off-field landing. Establish 73 KIAS immediately when power is lost; do not climb, do not descend, do not slow below best glide. The DA40 is a slippery, efficient airframe — it floats at best glide speed. Energy management on approach matters; do not arrive at the runway threshold too high or too fast.
At KSPG, Runway 07's departure environment is open water — a ditching, not a field landing.
Off Runway 07's departure end (heading 062°), the off-field environment is open water — Tampa Bay. There is no alternate landing surface. If the engine fails on the Runway 07 departure at 300 ft AGL and altitude is insufficient to return to the airport, the outcome is a controlled ditching. This is not a worst-case scenario; it is the geographic reality. Best glide is 73 KIAS. Doors unlatched before water contact. Master off just before impact. Flaps for slowest possible touchdown speed — impact energy rises with the square of touchdown speed. Know this before you line up on Runway 07.
Runway 25's departure environment is dense development — a forced landing in buildings and roads is dangerous but possible.
Off Runway 25's departure end (heading 242°), the off-field environment is dense development — buildings, roads, low-density residential. An engine failure on the Runway 25 departure gives you the option of returning to the airport (Runway 07, heading 062°) or attempting a forced landing in the development ahead. A forced landing in dense development is dangerous and may result in impact with structures. The better choice is almost always to return to the airport if altitude permits. At 300 ft AGL with partial power, a 180° turn back to Runway 07 is tight but possible if you maintain 73 KIAS and descend at roughly 300 ft/min.
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 at 300 ft AGL / forced landing), and ERA18LA241 (2018 DA40 total power loss on approach / forced landing). Anonymized and localized to KSPG.
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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