The Turn to Final
Base-to-final stall/spin in the pattern — airspeed decay, bank angle, and the decision to go around
The scenario
Departing Tampa North Aero Park Airport (X39), Tampa, FL — Runway 14, a 3,541-foot asphalt strip at 68 ft MSL. You are a Private pilot with roughly 180 hours total time, current and proficient. This is your second visit to X39; you are not familiar with the field's pattern or approach environment.
It is a clear, calm afternoon: winds 090° at 4 knots, visibility 10+ statute miles, scattered clouds at 3,500 ft, OAT 24°C. A textbook VFR day. You have completed three touch-and-go landings on Runway 14 and are setting up for your fourth approach. The pattern is empty; no other traffic.
You are on base leg, 600 ft AGL, descending at 70 KIAS, flaps 20°, power at 1,200 RPM (descent power). The runway is in sight ahead and to the left. You begin a left turn to final. The turn is shallow at first — maybe 10° of bank — but as you roll in, you tighten the bank to 20°, then 25°, to align with the runway. The airspeed is 68 KIAS and holding steady.
Aircraft: Piper PA-28-161 Warrior, solo, within weight and balance limits. Fuel selector is on LEFT tank (you switched from RIGHT on the downwind leg per your normal procedure). The engine is running smoothly. Nothing was written up; the airplane is airworthy.
Pilot: you — Private, 180 hours, current, but this is only your second visit to X39. You have not flown a pattern here before. You are focused on the turn to final and aligning with the runway. You are not actively monitoring airspeed during the turn.
- {'label': 'Field', 'value': 'X39 · Tampa North Aero Park'}
- {'label': 'Runways', 'value': '14/32'}
- {'label': 'Elevation', 'value': '68 ft'}
- {'label': 'Aircraft', 'value': 'PA-28-161'}
- {'label': 'Dominant phase', 'value': 'Takeoff / Landing'}
The decision
Before we get into the decision tree — what do you know about stall/spin risk during the base-to-final turn in the Piper Warrior? (Pick all that apply; this records your baseline.)
What the record shows
What the NTSB files show
NTSB CEN12FA188 (2012, FATAL): A Piper PA-28-161 stalled during takeoff from a soft grass airstrip with a quartering tailwind. The probable cause was the pilot's failure to maintain airplane control during takeoff, resulting in an aerodynamic stall and collision with trees at the departure end. Contributing factors included inadequate preflight planning for the soft field conditions and failure to obtain a weather briefing.
NTSB NYC08FA237 (2008, FATAL): A Piper PA-28-161 on an instructional flight stalled during initial climb from a touch-and-go landing. 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. The airplane impacted trees about 1,000 feet beyond the runway.
NTSB NYC06FA029 (2005, FATAL): A Piper PA-28-161 on a touch-and-go practice flight stalled during the go-around after landing at low altitude. The probable cause was the flight instructor's failure to maintain adequate airspeed, resulting in an inadvertent stall and impact with trees and terrain.
NTSB CHI05LA226 (2005, FATAL): A Piper PA-28-161 lost engine power due to left magneto failure during initial climb after takeoff and subsequently stalled. The probable cause was partial failure of the left magneto due to improper maintenance, with contributing factors including the instructor's failure to maintain airspeed and follow emergency procedures.
Regional base-to-final stall precedents: NTSB FTW91DRG06 (1991, Questair Venture), SEA07CA125 (2007, Cessna 170B), ERA12CA019 (2011, Aeronca 7AC), and ERA10CA300 (2010, Piper PA-18-135) all document stall/spin events during the base-to-final turn or climbing turn on final approach. The common thread: airspeed decay during a turn at low altitude, with insufficient altitude for recovery.
The real accidents cited above occurred at other airports and in various aircraft — NOT at Tampa North Aero Park Airport (X39). However, X39's own accident corpus shows LOSS_OF_CONTROL_INFLIGHT as 27.3% of accidents and STALL_SPIN as 9.1% — a pattern consistent with pattern-work and approach-phase loss of control.
Off Runway 14's departure end (heading 141°), the off-field environment is medium development, low-density development, and wooded wetland — no open field for a forced landing. An uncontrolled descent into this environment is unrecoverable.
The consistent lesson across all these events: the base-to-final turn is a critical phase. Airspeed decay is insidious — the pilot is focused on alignment and descent, not the airspeed indicator. Stall speed increases by 1.4× to 1.5× in a 20–25° bank. At 600 ft AGL, recovery altitude is marginal. The decision to go around must be made early, before airspeed decays to stall speed.
Key lesson — In the Piper Warrior, stall speed in landing configuration (flaps 40°) is 44 KIAS, but with partial flaps (20°) it is higher, around 48–50 KIAS. In a 25° bank, stall speed increases to approximately 70 KIAS. During the base-to-final turn at 600 ft AGL, continuous airspeed monitoring is non-negotiable. If airspeed decays below 70 KIAS in a 25° bank, reduce the bank angle immediately and apply power. If the approach is unstable — high, fast, misaligned, or showing any sign of airspeed decay — execute a go-around. At 600 ft AGL, recovery altitude from a stall or spin is marginal. The go-around is the safe choice.
Debrief — teaching points
Stall speed increases dramatically in a turn.
In the Piper Warrior, stall speed in landing configuration (flaps 40°) is 44 KIAS in level flight. But in a 20° bank, stall speed increases to approximately 62 KIAS (1.4× level-flight stall speed). In a 25° bank, it increases to approximately 70 KIAS (1.5× level-flight stall speed). In a 30° bank, it increases to approximately 76 KIAS (1.7× level-flight stall speed). During the base-to-final turn, if you are flying at 68 KIAS in a 25° bank, you are flying at stall speed. Any further increase in bank angle or decrease in airspeed will result in a stall. Continuous airspeed monitoring during turns is non-negotiable.
Airspeed decay during the base-to-final turn is insidious.
The pilot is focused on aligning the airplane with the runway and managing the descent. The airspeed indicator is in the peripheral vision. Airspeed decays gradually — 70 KIAS to 68 to 66 to 64 — and by the time the pilot notices, the airplane is at or below stall speed in the turn. The recovery window is narrow. At 600 ft AGL, recovery altitude is marginal. The solution: scan the airspeed indicator continuously during the turn. Maintain at least 1.4× stall speed (approximately 70 KIAS in landing configuration) during the turn. If airspeed decays below this threshold, reduce the bank angle immediately and apply power.
The go-around is not a failure — it is airmanship.
If the approach is unstable — high, fast, misaligned, or showing any sign of airspeed decay — the correct decision is a go-around. Apply full power, reduce flaps to 20°, and pitch for Vy (79 KIAS). Climb back to pattern altitude and enter downwind for another approach. The go-around costs time and fuel, but it is infinitely cheaper than a stall/spin at low altitude. The NTSB accident data shows that pilots who attempt to salvage unstable approaches often stall. Pilots who go around live to fly another day.
Know the stall warning signs in your airplane.
In the Piper Warrior, stall warning signs include: (1) a mushy feel in the controls — the airplane becomes sluggish and less responsive; (2) a slight buffeting or vibration in the airframe as the airflow over the wing becomes turbulent; (3) a decrease in the rate of descent despite maintaining pitch attitude; (4) difficulty maintaining altitude or a tendency to sink despite applying back pressure. If you sense any of these signs during the base-to-final turn, reduce the bank angle immediately, lower the nose, and apply power. Do not wait for the stall to develop fully.
At X39, the off-field environment off Runway 14 is unforgiving.
Off Runway 14's departure end (heading 141°), the off-field environment is medium development, low-density development, and wooded wetland. There is no open field for a forced landing. An uncontrolled descent into this environment is unrecoverable. This is not a worst-case scenario; it is the geographic reality of X39. If you are on the base-to-final turn and the approach is unstable, the go-around is the only safe option. You cannot land in the trees.
Built from the real accident record
Scenario built from NTSB CEN12FA188 (2012 PA-28-161 stall on takeoff, soft field), NYC08FA237 (2008 PA-28-161 stall during go-around after high approach), NYC06FA029 (2005 PA-28-161 stall on go-around at low altitude), CHI05LA226 (2005 PA-28-161 loss of engine power and stall during climb), and regional base-to-final stall precedents FTW91DRG06 (1991 Questair stall during base-to-final turn), SEA07CA125 (2007 Cessna 170B stall during base-to-final), ERA12CA019 (2011 Aeronca 7AC stall/spin during downwind turn), and ERA10CA300 (2010 PA-18-135 stall/spin during climbing turn on final). Localized to Tampa North Aero Park Airport (X39).
NTSB reports: CEN12FA188 · NYC08FA237 · NYC06FA029 · CHI05LA226 · FTW91DRG06 · SEA07CA125 · ERA12CA019 · ERA10CA300
ACS tasks: PA.II.E — Approach and Landing · PA.II.F — Go-Around / Rejected Landing · PA.III.A — Stall Recognition and Recovery · PA.III.B — Spin Awareness · PA.I.H — Human Factors
Relevant FARs: §91.3 · §91.13 · §91.119
Step through the full decision tree, make the calls, and see where each choice leads — then debrief it with your CFI.
Open the interactive scenario →All sample scenarios · More Piper Warrior scenarios · More scenarios at X39