The Downwind Turn
Uncoordinated turn at low altitude, weight and balance creeping, and a stall that leaves no room for recovery
The scenario
Departing Lakeland Linder International Airport (KLAL), Runway 10, on a personal sightseeing flight to a nearby destination. Elevation 142 ft MSL; runway heading 090°. It is a hot, humid Florida summer afternoon: OAT 34°C, dew point 26°C, altimeter 29.89. Density altitude is approximately 3,200 ft — the airplane will perform as if it is 3,000 ft higher than it actually is. Scattered clouds at 4,000 ft, visibility 10 SM. Light wind from the southeast, 3 knots.
Aircraft: Cessna 172R, fixed gear, fixed-pitch prop, fuel-injected Lycoming IO-360-L2A (160 hp). Steam panel (vacuum-driven attitude indicator, turn coordinator, suction gauge). Fuel selector on BOTH. You have not flown this particular airplane in two weeks.
Pilot: you — a Private pilot, current, roughly 250 hours total. You completed a preflight inspection this morning, but you did not weigh the airplane or verify the weight and balance envelope. The last known weight and balance was from six months ago, when the airplane was at gross weight (2,450 lb). Since then, the school has added a new intercom system and upgraded the interior. You did not ask about the weight change.
Passengers: two friends, both roughly 180 lb each. You are 170 lb. Fuel: full tanks (52 gallons usable). Baggage: a cooler, a beach bag, and a camera case — roughly 60 lb total. You did not weigh the baggage or calculate the new CG.
Takeoff roll: the airplane feels sluggish. It takes longer to reach rotation speed (51 KIAS) than you remember. You rotate at 51 KIAS and the airplane climbs, but the climb rate is poor — you are climbing at roughly 200 ft/min instead of the expected 600+ ft/min. You are at 400 ft AGL, heading 090°, airspeed 60 KIAS, and the airplane is not climbing as it should. The runway is behind you. Off Runway 10's departure end (heading 090°), the off-field environment is low-density development, open developed areas (parks/large lots), and dense development — marginal for a forced landing, but possible.
- {'label': 'Field', 'value': 'KLAL · Lakeland Linder'}
- {'label': 'Runways', 'value': '5/23 · 10/28'}
- {'label': 'Elevation', 'value': '142 ft'}
- {'label': 'Aircraft', 'value': 'C172R'}
- {'label': 'Dominant phase', 'value': 'Landing / Takeoff'}
The decision
Before we get into the decision tree — what do you know about stall/spin accidents in the C172R at low altitude? (Pick all that apply; this records your baseline.)
What the record shows
What the NTSB files show
NTSB WPR21FA258 (2021): A Cessna 172R on a personal flight departed overweight at high density altitude, entered a box canyon, and stalled at low altitude. The probable cause was the pilot's failure to maintain airspeed, compounded by the aircraft's weight exceedance and high density altitude conditions that degraded climb performance. The pilot did not verify the weight and balance before departure.
NTSB CEN14FA453 (2014): A Cessna 172R on a personal sightseeing flight failed to climb after takeoff and impacted terrain during an attempted return to the airport. The probable cause was the pilot's failure to maintain control during the return turn, with contributing factors including inadequate preflight planning that resulted in the aircraft exceeding maximum gross weight. The pilot did not calculate the weight and balance.
NTSB WPR11FA242 (2011): A Cessna 172R stalled during a downwind turn while executing a go-around from a landing attempt and entered an unrecoverable spin. The probable cause was the pilot's failure to maintain adequate airspeed during the downwind turn, with contributing factors including inadequate preflight planning and exceedance of the approved weight and balance envelope. The pilot did not verify the CG before departure.
The consistent thread across all three accidents: the pilots did not verify the weight and balance before departure. In each case, the airplane was overweight, the CG was out of limits, or both. The overweight condition degraded climb performance and made the airplane more prone to stalling. The aft CG made the airplane more pitch-sensitive and more prone to stalling in turns. In each case, a low-altitude turn (either a return to the airport or a go-around) required a steep bank angle. The stall speed in the turn was elevated. The pilot was at an airspeed below the stall speed for the bank angle. The airplane stalled and entered a spin. There was no altitude to recover.
At KLAL, the off-field environment off Runway 10's departure end (heading 090°) is low-density development, open developed areas (parks/large lots), and dense development — marginal for a forced landing. An engine failure on the Runway 10 departure would require a forced landing in that environment. But these accidents were not engine failures — they were stall/spin accidents caused by weight and balance problems and low-altitude turns.
The real accidents cited above occurred at other airports and in other aircraft — NOT at KLAL. But the scenario is localized to KLAL to make the weight and balance problem real and consequential for you as a student here. The lesson is universal: verify the weight and balance before every flight. Do not assume the airplane is within limits. Do not skip the calculation because you are in a hurry. The weight and balance envelope exists for a reason — it ensures the airplane will perform as designed and will not be prone to stalling or spinning in normal maneuvers.
Key lesson — The Cessna 172R's performance is sensitive to weight and balance. An overweight airplane stalls at a higher airspeed and climbs more slowly. An aft CG makes the airplane more pitch-sensitive and more prone to stalling in turns. At high density altitude (like KLAL in summer), these effects are magnified. A sluggish takeoff and poor initial climb are red flags — they indicate the airplane is not performing as designed. Investigate immediately. Have the airplane weighed and the weight and balance verified. Do not continue the flight if the airplane is overweight or the CG is out of limits. The three NTSB accidents cited above all involved pilots who did not verify the weight and balance before departure. In each case, a low-altitude turn required a stall recovery that was not possible at the altitude available. Verify the weight and balance. Every flight. No exceptions.
Debrief — teaching points
Weight and balance must be verified before every flight.
The C172R's weight and balance envelope is not a suggestion — it is a limit. An overweight airplane stalls at a higher airspeed, climbs more slowly, and is more difficult to control. An aft CG makes the airplane more pitch-sensitive and more prone to stalling in turns. At KLAL's high density altitude (3,200 ft in summer), these effects are magnified. Do not assume the airplane is within limits. Do not skip the calculation because you are in a hurry. Calculate the weight and balance for every flight. If the airplane is overweight or the CG is out of limits, remove weight or redistribute the load. Do not dispatch an airplane that is out of limits.
A sluggish takeoff and poor initial climb are red flags.
If the airplane does not climb as expected on takeoff, something is wrong. The most common causes are: (1) the airplane is overweight, (2) the CG is out of limits, (3) the density altitude is higher than expected, or (4) there is a mechanical problem with the engine or propeller. Do not ignore a sluggish takeoff. Investigate immediately. If you cannot identify the cause, return to the airport and land. A precautionary landing after an unusual takeoff is the correct decision. Do not continue the flight and hope the problem goes away.
The stall speed in a turn is higher than the stall speed in straight flight.
The stall speed increases with the load factor (G-load) in a turn. In a 20° bank, the load factor is 1.06 G and the stall speed increases by about 3%. In a 30° bank, the load factor is 1.15 G and the stall speed increases by about 7%. In a 45° bank, the load factor is 1.41 G and the stall speed increases by about 19%. At KLAL, the C172R's stall speed in clean configuration (Vs) is 44 KIAS in straight flight. In a 45° bank, the stall speed is approximately 52 KIAS. If you are at 50 KIAS in a 45° bank, you are below the stall speed and the airplane will stall. A stall in a turn at low altitude is a spin, and a spin at low altitude is unrecoverable.
An aft CG makes the airplane more prone to stalling in turns.
An aft CG shifts the center of pressure aft, making the airplane more pitch-sensitive. The elevator becomes more effective, and the pilot can more easily pitch the nose up. An aft CG also reduces the elevator's ability to lower the nose in a stall recovery. In a turn at low altitude with an aft CG, the pilot may pitch the nose up too much trying to maintain altitude, causing a stall. The stall recovery is then more difficult because the aft CG reduces the elevator's effectiveness. The three NTSB accidents cited above all involved aft CG conditions. Do not dispatch an airplane with an aft CG.
A go-around from a landing attempt is a high-risk maneuver at low altitude.
A go-around requires a steep bank to return to the airport. At 400 ft AGL on final approach, a go-around requires a 20–30° bank to turn back to the runway. If the airplane is overweight or the CG is aft, the stall speed in the turn is elevated. If the pilot is at an airspeed below the stall speed for the bank angle, the airplane will stall. A stall at 400 ft AGL in a turn is a spin, and a spin at 400 ft AGL is unrecoverable. NTSB WPR11FA242 was a stall/spin during a go-around downwind turn. Know the stall speed for the bank angle you are flying. Maintain an airspeed above the stall speed for the bank angle. If you cannot maintain that airspeed, reduce the bank angle.
High density altitude degrades climb performance and increases stall speed.
At KLAL in summer, the density altitude can be 3,000 ft or higher. The airplane performs as if it is 3,000 ft higher than it actually is. The climb rate is reduced, the takeoff distance is increased, and the stall speed is slightly increased. An overweight airplane at high density altitude is a dangerous combination. The climb performance is severely degraded, and the airplane is more prone to stalling. Do not dispatch an overweight airplane at high density altitude. If you must fly at high density altitude, reduce the weight and ensure the CG is within limits.
Built from the real accident record
Scenario built from NTSB WPR21FA258 (2021 C172R stall, overweight, high DA), CEN14FA453 (2014 C172R stall on return to airport, overweight), and WPR11FA242 (2011 C172R stall during go-around downwind turn, overweight and out of CG). All three accidents involved the pilot's failure to maintain airspeed in a turn at low altitude, compounded by weight/balance exceedance. Localized to KLAL.
NTSB reports: WPR21FA258 · CEN14FA453 · WPR11FA242
ACS tasks: PA.I.B — Airworthiness Check · PA.I.C — Weight and Balance · PA.II.A — Preflight Inspection · PA.III.A — Normal Takeoff · PA.III.C — Go-Around / Rejected Landing · PA.V.A — Stall Recognition and Recovery · PA.I.H — Human Factors
Relevant FARs: §91.3 · §91.9 · §91.13
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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