The Turn to Final
Base-to-final stall in a C172S — airspeed margin, crosswind, and the decision to go around
The scenario
Departing Sarasota Bradenton International Airport (KSRQ), Sarasota/Bradenton, FL — Runway 14, landing pattern in progress. Field elevation 30 ft MSL. You are a Private pilot with roughly 180 hours total time, current and proficient. This is a familiar airport; you have landed here a dozen times.
It is a warm afternoon in late spring: OAT 26°C, winds reported 160° at 12 gusting to 18 knots. Runway 14 is aligned 134° true. The crosswind component is roughly 8–10 knots, within limits, but the gusts are noticeable. Visibility 10 SM, scattered clouds at 3,500 ft. KSRQ tower is active (0600–0000 local); you are in Class C airspace, ceiling 4,000 MSL.
You are on base leg, 800 ft AGL, descending at 80 KIAS with 10° flaps. The turn to final is ahead. The runway is in sight. You have been flying this pattern a hundred times — it is routine. You are not thinking about stall speed, airspeed margins, or the crosswind. You are thinking about landing.
Aircraft: Cessna 172S, solo, within limits. Fuel-injected Lycoming IO-360, fixed-pitch prop, glass panel (G1000). Best glide 68 KIAS. Stall speed clean (Vs) is 48 KIAS; stall speed landing (Vs0) is 40 KIAS with full flaps.
Pilot: you — Private pilot, 180 hours, current. You have not practiced stall recovery in a month. You have never intentionally stalled in a crosswind. You are not thinking about the turn to final as a critical maneuver — it is just the turn to final.
- {'label': 'Field', 'value': 'KSRQ · Sarasota Bradenton'}
- {'label': 'Runways', 'value': '4/22 · 14/32'}
- {'label': 'Elevation', 'value': '30 ft'}
- {'label': 'Aircraft', 'value': 'C172S'}
- {'label': 'Dominant phase', 'value': 'Takeoff / Landing'}
The decision
Before we enter the decision tree — what do you know about stall speed and crosswind effects in the C172S? (Pick all that apply; this records your baseline.)
What the record shows
What the NTSB files show
NTSB CEN17FA111 (2017): A Cessna 172S conducting spin training maneuvers collided with a reservoir after the pilots failed to apply prompt and correct flight control inputs to recover from an intentional aerodynamic spin. The probable cause was the failure of the pilots to apply prompt and/or correct flight control inputs to adequately recover from the intentional aerodynamic spin. The lesson: stall and spin recovery requires immediate, correct action — lowering the nose to break the stall, not pulling back.
NTSB ERA14FA283 (2014): A Cessna 172S on an instructional night flight experienced a partial loss of engine power during initial climb after a touch-and-go landing at Daytona Beach and impacted the ground. The pilots decided to turn back to the airport, which led the airplane to exceed its critical angle of attack and experience an aerodynamic stall. The probable cause was the partial loss of engine power, with contributing factors including the pilots' decision to turn back to the airport at low altitude — a decision that compromised airspeed safety.
NTSB LAX89LA222 (1989, Grumman AA-1C, fatal): An American AA-1C aborted an approach and entered a low unstable pattern in gusting crosswind conditions, 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. The lesson: in crosswind conditions, maintain adequate airspeed margin; recognize unstable pattern early and go around rather than continue descent at marginal speed.
NTSB ERA10CA300 (2010, Piper PA-18-135): 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 accident was attributed to the pilot's failure to maintain adequate airspeed during the climbing turn. The lesson: recognize when an ATC request (or self-imposed maneuver) on final approach will compromise airspeed safety; request alternative spacing solution or go around rather than attempt marginal-speed turn.
NTSB ATL83LA356 (1983, Cessna 172C): A Cessna 172 stalled during short final approach at 200 feet with full flaps in crosswind conditions and struck the ground. The probable cause was the pilot allowing the aircraft to descend below stall speed during approach. The lesson: maintain adequate airspeed buffer above stall speed during final approach; recognize stall warning and execute go-around immediately rather than continuing descent.
The real accidents cited above occurred at other airports and in other aircraft types — NOT at KSRQ. However, KSRQ's own accident history shows that LOSS_OF_CONTROL_GROUND (19.2%), FORCED_LANDING (15.4%), RUNWAY_EXCURSION (11.5%), HARD_LANDING (11.5%), and LOSS_OF_CONTROL_INFLIGHT (11.5%) are the dominant patterns at this field. The base-to-final stall is a recurring theme in general aviation accidents nationwide, and the conditions at KSRQ — crosswind, gusting winds, and a busy pattern — make this scenario locally relevant.
The consistent thread across all these events: the base-to-final turn is a critical maneuver at low altitude. Airspeed loss during this turn is insidious — it builds gradually, and by the time the stall is obvious, there is no altitude to recover. The fix is simple: maintain adequate airspeed margin (Vref + 5–10 knots), recognize unstable approaches early, and go around rather than continue descent at marginal speed. A go-around is not a failure — it is airmanship.
Key lesson — The turn from base to final is a critical maneuver at low altitude. In crosswind conditions, maintain adequate airspeed margin above stall speed (Vref is 65 KIAS in the C172S; plan for 70–75 KIAS on base leg to account for the turn). Recognize unstable approaches early — decreasing airspeed, tightening turn, excessive drift — and go around rather than continue descent at marginal speed. A stall at 400 ft AGL in the turn to final is unrecoverable. At KSRQ, with crosswind and gusting winds, this scenario is not hypothetical — it is a real risk.
Debrief — teaching points
Stall speed increases in a turn due to load factor.
In a level flight, stall speed is Vs (48 KIAS clean) or Vs0 (40 KIAS landing). In a banked turn, the load factor increases and stall speed increases. In a 15° bank, load factor is 1.04 and stall speed increases roughly 2%. In a 20° bank, load factor is 1.06 and stall speed increases roughly 3%. In a 30° bank, load factor is 1.15 and stall speed increases roughly 7%. In a 45° bank, load factor is 1.41 and stall speed increases roughly 19%. A base-to-final turn at 20–30° bank can increase stall speed by 3–7%. If you are at 65 KIAS on base leg, stall speed in landing configuration is roughly 40 KIAS, but in a 20° turn it is roughly 41–42 KIAS. The margin is thin. Add airspeed before the turn or reduce bank angle to maintain margin.
Crosswind does not change stall speed, but it complicates the turn.
A crosswind does not change the stall speed of the airplane. However, a crosswind can increase the true airspeed needed to maintain a given groundspeed. If you are on base leg with a crosswind pushing you away from the runway, you may increase back pressure on the yoke to tighten the turn and maintain runway alignment. This increased back pressure increases angle of attack and decreases airspeed. In a crosswind, it is easy to inadvertently stall while trying to maintain runway alignment. The correct technique is to use coordinated aileron and rudder to maintain the desired track, not to increase back pressure.
Vref (approach speed) is 65 KIAS in the C172S; plan for 70–75 KIAS on base leg.
The C172S POH recommends Vref of 65 KIAS on final approach. This is the speed to fly on short final with full flaps. On base leg, plan for 70–75 KIAS to account for the turn to final and the transition to full flaps. If you are at 80 KIAS on base leg and descending, you have a 5–10 knot margin to lose before you reach Vref. In a turn, load factor increases stall speed, so the margin is even thinner. Maintain 70–75 KIAS on base leg; do not descend below this speed without adding power.
Recognize unstable approaches early and go around.
An unstable approach is characterized by: (1) airspeed too high or too low (not within 5 knots of Vref), (2) descent rate too high (more than 500 fpm), (3) altitude too high or too low (not on a 3° glide slope), (4) excessive drift (not aligned with runway), or (5) aircraft configuration not stabilized (flaps not set, trim not set). If any of these conditions exist, the correct action is to go around — not to continue descent and try to salvage the landing. A go-around is not a failure; it is airmanship. The NTSB LAX89LA222 and ERA10CA300 accidents both resulted from pilots continuing unstable approaches at low altitude rather than going around.
Stall recovery: lower the nose first, then level the wings.
If a stall occurs, the correct recovery technique is: (1) lower the nose to reduce angle of attack and break the stall, (2) apply full power, and (3) level the wings with coordinated aileron and rudder. Do NOT pull back on the yoke — this increases angle of attack and deepens the stall. Do NOT try to level the wings before lowering the nose — this can cause a spin. The NTSB CEN17FA111 accident resulted from failure to apply correct recovery inputs. At low altitude, the stall is unforgiving — there is no time and no altitude for recovery. Prevention is the only option: maintain adequate airspeed margin and recognize unstable approaches early.
At KSRQ, the base-to-final turn is a critical maneuver.
KSRQ's dominant accident patterns include LOSS_OF_CONTROL_INFLIGHT (11.5%), HARD_LANDING (11.5%), and RUNWAY_EXCURSION (11.5%). The base-to-final turn is a critical maneuver at low altitude, especially in crosswind and gusting wind conditions. Runway 14 is aligned 134° true; the prevailing wind is from the south/southeast, creating a crosswind on Runway 14. Maintain adequate airspeed margin on base leg (70–75 KIAS), recognize unstable approaches early, and go around rather than continue descent at marginal speed. The margin between a normal landing and a stall is measured in knots — not feet.
Built from the real accident record
Scenario built from NTSB CEN17FA111 (2017 C172S spin recovery failure), ERA14FA283 (2014 C172S stall during turn-back climb), WPR12FA230 (2012 C172S stall during aggressive pitch-up), LAX08LA191 (2008 C172S stall/spin at low altitude), and local-environment precedents LAX89LA222 (1989 AA-1C stall on final in crosswind), ERA10CA300 (2010 PA-18 stall during climbing turn on final), ATL83LA356 (1983 C172 stall on short final), and FTW99LA205 (1999 C150 stall during evasive maneuver). Anonymized and localized to KSRQ.
NTSB reports: CEN17FA111 · ERA14FA283 · WPR12FA230 · LAX08LA191 · LAX89LA222 · ERA10CA300 · ATL83LA356 · FTW99LA205
ACS tasks: PA.VII.A — Approach and Landing · PA.VII.B — Go-Around / Rejected Landing · PA.VIII.A — Stall Recognition and Recovery · PA.VIII.B — Spin Awareness · PA.I.H — Human Factors
Relevant FARs: §91.3 · §91.13 · §91.121
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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