The Turn to Final
Base-to-final stall/spin in a Piper Warrior — airspeed decay, steep bank, and 400 feet AGL. The decision window is measured in seconds.
The scenario
Departing Zephyrhills Municipal Airport (KZPH), Zephyrhills, FL — Runway 19, a touch-and-go practice flight. Elevation 90 ft MSL. You are a Private pilot with roughly 150 hours total time; this is your third solo touch-and-go sequence of the afternoon.
It is a clear, calm Florida afternoon: OAT 26°C, wind calm to 3 knots, visibility 10+ SM. KZPH is non-towered (CTAF); you self-announce on 122.8. The pattern is empty. You have completed two touch-and-go landings on Runway 19 without incident. This is the third approach.
You are on base leg, 600 ft AGL, turning left toward final. Airspeed is 65 KIAS — slightly above Vref (63 KIAS full flaps) but comfortable for the turn. You have 10° of flaps extended. The runway is in sight, about 1 mile ahead. You are planning to touch down, apply power, and climb out for another circuit.
Aircraft: Piper PA-28-161 Warrior, solo, 1,800 lb gross weight, within limits. Carbureted Lycoming O-320-D, fixed-pitch prop, fixed gear, steam panel. Fuel selector on RIGHT tank (you switched from LEFT on downwind, as planned). Nothing was written up; the airplane is airworthy.
Pilot: you — a Private pilot, current, 150 hours total. You have 12 hours in the Warrior. You are comfortable in the pattern and have landed this airplane many times. You are not fatigued, not rushed, and the conditions are benign. This is routine practice.
- {'label': 'Field', 'value': 'KZPH · Zephyrhills'}
- {'label': 'Runways', 'value': '19/1 · 5/23'}
- {'label': 'Elevation', 'value': '90 ft'}
- {'label': 'Aircraft', 'value': 'PA-28-161'}
- {'label': 'Dominant phase', 'value': 'Landing / Cruise'}
The decision
Before we get into the decision tree — what do you know about stall/spin accidents in the pattern, and what is your personal airspeed target for the base-to-final turn in the 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 impacted trees about 1,000 feet beyond the runway. The probable cause was the flight instructor's failure to initiate a go-around during an unstable approach.
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 during the go-around climb, resulting in an inadvertent stall and impact with trees and terrain. The probable cause was the flight instructor's failure to maintain airspeed.
NTSB CHI05LA226 (2005): A Piper PA-28-161 on an instructional flight lost engine power due to left magneto failure during initial climb after takeoff. The flight instructor failed to maintain sufficient airspeed to avoid a stall. The airplane impacted terrain. The probable cause was partial magneto failure due to improper maintenance, with contributing factors including the instructor's failure to maintain airspeed.
NTSB CEN12FA188 (2012): A Piper PA-28-161 stalled during takeoff from a soft grass airstrip with a quartering tailwind. The pilot's failure to maintain airplane control during takeoff resulted in an aerodynamic stall and collision with trees at the departure end of the runway. The probable cause was inadequate preflight planning for the soft-field conditions and failure to obtain a weather briefing.
The regional base-to-final stall precedents (FTW91DRG06, SEA07CA125, ERA12CA019, ERA10CA300) all describe the same failure mode: a pilot allowing airspeed to decay during a turn in the pattern, either because of a steep bank angle, distraction, or an attempt to tighten the turn to final. In every case, the stall occurred at 300–400 ft AGL — too low for recovery. The common thread: the pilot did not recognize or did not act on the airspeed decay until it was too late.
KZPH's own accident corpus shows that FORCED_LANDING (29.2%), LOSS_OF_CONTROL_INFLIGHT (29.2%), and STALL_SPIN (16.7%) are the dominant patterns at this field. The base-to-final stall/spin is a real, recurring risk in the pattern at KZPH and at similar non-towered fields across Florida and the Southeast.
The real accidents cited above occurred at other airports and in other aircraft — NOT at KZPH. The scenario is localized to KZPH to make the off-field environment and the pattern geometry real and consequential for you as a student here. The off-field environment off Runway 19 (heading 180°) is marginal — mostly open developed areas (parks, large lots), evergreen forest, and low-density development. A stall/spin at 300 ft AGL off Runway 19 would likely result in impact with trees or terrain, not an open field landing.
The consistent thread across all these events: airspeed decay in the pattern is insidious. It happens gradually, often without obvious warning. The stall, when it comes, is sudden and violent. At 300–400 ft AGL, there is no altitude to recover. The fix is simple: maintain airspeed through the turn, keep the bank angle shallow, and go around if the approach becomes unstable. The failure is always a delay or a refusal to go around.
Key lesson — In the Piper Warrior, the base-to-final turn is where stall/spin accidents happen. Maintain 65+ KIAS on base and through the turn to final. Keep the bank angle shallow (15° or less) to minimize the increase in stall speed. If airspeed decays below 63 KIAS (Vref), or if the descent rate increases, or if the bank angle steepens beyond 20°, add power and go around. There is no penalty for going around. There is a fatal penalty for trying to salvage a bad approach at 300 ft AGL.
Debrief — teaching points
Stall speed increases with bank angle — a steep turn to final is a stall trap.
In the Piper Warrior, stall speed in landing configuration (full flaps) is 44 KIAS in level flight. In a 20° bank, stall speed increases to roughly 47 KIAS. In a 30° bank, it climbs to 54 KIAS. In a 40° bank, it reaches 60+ KIAS. If you are at 65 KIAS on base and you increase the bank angle to 30° to tighten the turn to final, your stall speed jumps to 54 KIAS — leaving only 11 knots of margin. Any airspeed decay in that steep turn will quickly consume that margin. Keep the bank angle shallow (15° or less) on base and through the turn to final. A longer, shallower turn is always safer than a tight, steep turn.
Airspeed decay in the turn is the first warning sign — act immediately.
As you roll into the turn to final, scan the airspeed indicator. If the needle begins to move toward the lower end of the green arc, or if it drops more than 2–3 knots, that is a warning. The causes are usually: (1) a bank angle that is too steep, (2) insufficient power, or (3) a pitch-up that is too aggressive. The fix is immediate: reduce the bank angle, add power, or lower the nose slightly. Do not wait for the airspeed to drop further. At 400 ft AGL, you have only 15–20 seconds before the stall speed is reached.
Add power on the turn to final — it is not cheating, it is airmanship.
Many pilots are taught to reduce power on downwind and glide to the runway on base and final. This works fine in a stable approach, but it is a trap if the approach becomes unstable. A better practice: maintain a small amount of power (1,000–1,200 RPM) through the turn to final. This keeps the airspeed stable and gives you a margin of safety. If the approach is stable and you are high, you can reduce power gradually. If the approach is unstable, you have power available to go around immediately. The Warrior's O-320 is docile and responsive — use it.
Go around if the approach is unstable — there is no penalty.
An unstable approach is one where: (1) airspeed is decaying, (2) descent rate is increasing, (3) the bank angle is steeper than 20°, (4) you are high or low on the glide path, or (5) you are not aligned with the runway. If any of these are true at 500 ft AGL or below, go around. Add full power, reduce the bank angle to 15° or less, and climb away. There is no penalty for going around. There is a fatal penalty for trying to salvage a bad approach at 300 ft AGL. The NTSB accident reports are unanimous: the pilots who went around survived; the pilots who tried to salvage the approach did not.
Trim the airplane for approach speed — it reduces workload and improves stability.
On downwind, trim the airplane for approach speed (63 KIAS full flaps, or 70 KIAS with partial flaps). This reduces the pressure you need to hold on the yoke and makes the airplane more stable. As you turn to final and extend flaps, re-trim to maintain the same pitch attitude. This way, the airplane naturally wants to fly at approach speed, and any deviation is immediately obvious. If the airspeed is decaying, the nose will feel heavy — that is a warning to add power or reduce the bank angle.
The Warrior's wing is forgiving, but it will stall if you ask it to — respect the stall speed.
The Piper Warrior is a docile, stable airplane with a semi-tapered wing that is forgiving in slow flight. But it is not immune to stalls. If you exceed the stall speed in a steep bank, the wing will stall. The stall in the Warrior is not dramatic — there is no violent break — but it is sudden and the airplane will roll. At 300 ft AGL, there is no altitude to recover. Know the stall speed in every configuration (44 KIAS clean, 44 KIAS landing), know how bank angle increases it, and maintain a safety margin of at least 15 knots above stall speed at all times in the pattern.
Built from the real accident record
Scenario built from NTSB NYC08FA237 (2008 PA-28-161 stall during touch-and-go), NYC06FA029 (2005 PA-28-161 stall on go-around), CHI05LA226 (2005 PA-28-161 stall after partial power loss), CEN12FA188 (2012 PA-28-161 takeoff stall), and regional base-to-final stall precedents FTW91DRG06, SEA07CA125, ERA12CA019, ERA10CA300. Anonymized and localized to KZPH.
NTSB reports: CEN12FA188 · NYC08FA237 · NYC06FA029 · CHI05LA226 · FTW91DRG06 · SEA07CA125 · ERA12CA019 · ERA10CA300
ACS tasks: PA.I.F — Weather Information · PA.VII.A — Approach and Landing · PA.VII.B — Go-Around / Rejected Landing · PA.VIII.A — Slow Flight · PA.VIII.B — Stall Prevention and Recovery · PA.I.H — Human Factors
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 KZPH