The Turn to Final
Base-to-final stall/spin in the pattern — low altitude, tight turn, airspeed decay, and water below
The scenario
Departing Albert Whitted Airport (KSPG), St. Petersburg, FL — Runway 07, a touch-and-go landing and climb-out practice flight. Elevation 7 ft MSL. You are a Private pilot with roughly 150 hours total, 45 hours in the Piper Warrior. Your CFI is in the right seat, observing.
It is a breezy afternoon in late spring: OAT 26°C, wind from the southwest at 12 gusting to 18 knots. Runway 07 is the active runway (heading 062°). The wind is roughly a 30° crosswind on takeoff, but manageable. Visibility 10 SM, scattered clouds at 3,500 ft. KSPG tower is open and active (it is 1430 local). You are in Class D airspace, ceiling 1,500 ft MSL.
You have completed three touch-and-go landings on Runway 07. On the fourth approach, you are on base leg at 800 ft AGL, airspeed 75 KIAS, flaps 20°, descending toward final. The tower has cleared you to land. Your CFI is quiet — letting you fly the approach.
Aircraft: Piper PA-28-161 Warrior, solo (CFI is observing, not flying). Full fuel, within limits. Carbureted Lycoming O-320-D, fixed-pitch prop, fixed gear, LEFT/RIGHT fuel selector (fuel is on LEFT tank). Steam panel: airspeed indicator, turn coordinator, altimeter, VSI, heading indicator, engine instruments.
The turn from base to final is ahead. The runway is in sight. The wind is gusting. Your airspeed is 75 KIAS. The turn will be roughly 90° to the right, descending from 800 ft to pattern altitude.
- {'label': 'Field', 'value': 'KSPG · Albert Whitted'}
- {'label': 'Runways', 'value': '7/25 · 18/36'}
- {'label': 'Elevation', 'value': '7 ft'}
- {'label': 'Aircraft', 'value': 'PA-28-161'}
- {'label': 'Dominant phase', 'value': 'Landing / Takeoff'}
The decision
Before we get into the decision tree — what do you know about stall/spin risk during the base-to-final turn in a Piper Warrior? (Pick all that apply; this records your baseline.)
What the record shows
What the NTSB files show
NTSB NYC08FA237 (2008): A Piper PA-28-161 on an instructional flight stalled during initial climb from a touch-and-go landing at Newport State Airport, Rhode Island. The flight instructor failed to initiate a go-around during a high approach and did not take adequate remedial action during the attempted touch-and-go. The airplane stalled and impacted trees about 1,000 feet beyond the runway. The probable cause was the flight instructor's failure to initiate a go-around during a high approach and inadequate remedial action during the attempted touch-and-go.
NTSB NYC06FA029 (2005): A Piper PA-28-161 on a touch-and-go practice flight stalled during the go-around after landing at low altitude. The flight instructor failed to maintain adequate airspeed, resulting in an inadvertent stall and impact with trees and terrain. The probable cause was the flight instructor's failure to maintain airspeed, which resulted in an inadvertent stall and subsequent impact with trees and terrain.
NTSB ERA15LA257 (2015): A Piper PA-28-151 stalled during the final approach turn at low altitude due to inadequate airspeed management. The pilot failed to maintain proper approach speed while turning onto final approach. The probable cause was the pilot's failure to maintain sufficient airspeed during the final approach turn.
NTSB LAX89LA222 (1989, fatal): A Grumman AA-1C aborted an approach and entered a low unstable pattern in gusting crosswind conditions. The airplane stalled on final approach and impacted the ocean short of the runway. The probable cause was the pilot's failure to maintain sufficient airspeed to prevent a stall at an altitude too low for recovery.
NTSB ERA10CA300 (2010): A Piper PA-18-135 stalled and entered a spin during a climbing right turn on final approach when the pilot attempted to perform a 360-degree turn per ATC spacing request. The probable cause was the pilot's failure to maintain adequate airspeed during the climbing turn. The teaching angle: recognize when a maneuver exceeds aircraft capability and request alternative spacing solution.
The real accidents cited above occurred at other airports and in other aircraft — NOT at Albert Whitted Airport (KSPG). KSPG has its own accident history (LOSS_OF_CONTROL_INFLIGHT 20.0%, FORCED_LANDING 16.4%, STALL_SPIN 12.7%, 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: stall/spin during the base-to-final turn happens when airspeed decays in a turn at low altitude. The load factor in a turn increases the stall speed. A 20° bank increases stall speed by roughly 6%; a 30° bank by roughly 15%. At 75 KIAS on base with flaps 20° (stall speed 44 KIAS), you have 31 knots of margin. In a 20° turn, stall speed rises to roughly 47 KIAS — margin shrinks to 28 knots. A gust or a moment of inattention can decay airspeed below that margin. The fix is simple: add power before the turn, or increase airspeed, to maintain a comfortable margin. At low altitude, there is no room for error.
Off Runway 07 at KSPG, the off-field environment is open water — Tampa Bay. An engine-out or loss-of-control off that runway is a ditching, not a field landing. Off Runway 25, the environment is dense development — a forced landing there is into buildings and streets. Off Runway 18 and 36, the environment is mixed open water and development. Know your off-field options before you depart. If the approach is unstable, go around. The go-around is always available.
Key lesson — Stall/spin during the base-to-final turn is a low-altitude trap. Maintain adequate airspeed margin through the turn — add power before the turn, or increase airspeed, to account for the load-factor increase in the bank. At KSPG, off Runway 07 is open water (ditching); off Runway 25 is dense development. Know your off-field options. If the approach is unstable, go around. The go-around is always available.
Debrief — teaching points
Load factor in a turn increases stall speed.
In level flight, stall speed is Vs0 (44 KIAS in the Warrior, landing configuration). In a 20° bank, stall speed rises to roughly 47 KIAS (6% increase). In a 30° bank, stall speed rises to roughly 50 KIAS (15% increase). In a 40° bank, stall speed rises to roughly 55 KIAS (25% increase). The steeper the bank, the higher the stall speed. At 75 KIAS on base with flaps 20° (stall speed 44 KIAS), you have 31 knots of margin in level flight. In a 20° turn, margin shrinks to 28 knots. A gust or a moment of inattention can decay airspeed below that margin. The solution: add power before the turn, or increase airspeed, to maintain a comfortable margin.
Gusts decay rapidly in a turn.
A wind gust can briefly increase airspeed, but when the gust passes, airspeed decays rapidly — especially in a turn where the wing is already loaded. In the scenario, a gust pushed airspeed from 75 KIAS to 85 KIAS, then decayed to 68 KIAS in the turn. The decay is fast and can be hard to catch. The solution: add power before the turn to establish a stable airspeed that can absorb a gust decay without falling below stall speed.
The Warrior has no stall-warning system.
The Warrior has no stall horn, no stick shaker, no warning light. Stall recognition depends on feel (buffeting, control feel), sound (wind noise change), and instrument scan (airspeed indicator, turn coordinator). Missing the warning is easy, especially in a turn where the pilot is focused on the runway and the bank angle. Scan the airspeed indicator as part of your regular instrument scan, especially in the turn to final. If airspeed is decaying, add power or shallow the bank.
Unstable approach at low altitude is a stall/spin trap.
An unstable approach is one where airspeed is decaying, descent rate is high, or the airplane is not aligned with the runway. At 800 ft AGL, there is little room for error. If the approach becomes unstable, the correct response is to go around — level the wings, add full power, and climb back to pattern altitude. The go-around is always available. It is not a failure; it is airmanship. The NTSB data show that pilots who try to salvage an unstable approach at low altitude often stall or spin. Pilots who go around live to try again.
Approach speed in the Warrior is 63 KIAS (Vref, full flaps).
The POH specifies Vref as 63 KIAS with full flaps (40°). On base leg with flaps 20°, a good target is 70–75 KIAS. This gives a margin above stall speed (44 KIAS in landing configuration) and allows for gust decay in the turn. As you extend flaps to 40° on final, airspeed will decrease slightly — plan for 65–70 KIAS on final. If airspeed is decaying below 65 KIAS on final, add power or go around.
Off Runway 07 at KSPG is open water — a ditching, not a field landing.
The off-field environment off Runway 07's departure end (heading 062°) is open water — Tampa Bay. There is no alternate landing surface. An engine-out or loss-of-control off that runway is a ditching. Off Runway 25, the environment is dense development — a forced landing there is into buildings and streets. Off Runway 18 and 36, the environment is mixed open water and development. Know your off-field options before you depart. If the approach is unstable and you cannot recover, the outcome depends on where you are in the pattern.
Built from the real accident record
Scenario built from NTSB NYC08FA237 (2008 PA-28-161 stall during go-around), NYC06FA029 (2005 PA-28-161 stall on go-around), ERA15LA257 (2015 PA-28-151 stall on final turn), LAX89LA222 (1989 AA-1C stall on final in gusting conditions), and ERA10CA300 (2010 PA-18-135 stall/spin during climbing turn on final). Localized to KSPG with real off-field environment (open water off Runway 07 and 18 departure ends; dense development off Runway 25 departure end).
NTSB reports: CEN12FA188 · NYC08FA237 · NYC06FA029 · CHI05LA226 · LAX89LA222 · ERA10CA300 · ATL92LA146 · ERA15LA257
ACS tasks: PA.VII.A — Approach and Landing · PA.VII.B — Go-Around / Rejected Landing · PA.VIII.C — Stall Recognition and Recovery · PA.I.H — Human Factors · PA.II.A — Preflight Assessment
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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