Steep turns require both increased back pressure and a power addition to simultaneously maintain altitude and airspeed — a nuance that is aerodynamically correct and practically important, regardless of what the student's CFI emphasized. The core principle involves load factor and its direct effect on induced drag. As bank angle steepens, the vertical component of lift decreases, so the pilot must increase angle of attack (via back pressure) to compensate and prevent altitude loss. At 45° of bank, load factor reaches 1.41g; at 60°, it doubles to 2.0g. That elevated angle of attack dramatically increases induced drag — the drag component tied to lift production — and without a corresponding power addition, airspeed will decay across the duration of the turn.
The CFI's instruction was not wrong, but it was incomplete. Back pressure addresses the altitude equation; power addresses the energy equation. These are distinct aerodynamic problems occurring simultaneously. In a 45° bank steep turn in a typical trainer like a Cessna 172, students are generally taught to add approximately 100–200 RPM above cruise setting to offset the increased induced drag and hold target airspeed throughout the maneuver. Failing to do so typically results in a gradual airspeed bleed that, if undetected, drives the aircraft closer to the elevated stall speed that already accompanies the increased load factor. The stall speed in a 45° bank is roughly 19% higher than wings-level stall speed; in a 60° bank it is 41% higher.
From a standards standpoint, the FAA's Airman Certification Standards for both the Private and Commercial certificates require that steep turns be flown to specific tolerances — altitude within ±100 feet, airspeed within ±10 knots, and bank angle within ±5° — and those tolerances only become achievable when the student understands that power management is part of the technique, not an afterthought. Fixating on back pressure alone tends to produce altitude excursions, progressive airspeed decay, or overbanking corrections that cascade into each other. The maneuver is fundamentally an exercise in coordinated energy management under elevated load.
The broader aerodynamic principle at work here — that increased lift demand produces increased induced drag, which requires increased power to sustain airspeed — extends well beyond steep turn training. It is the same relationship governing energy management in circling approaches, maneuvering in instrument holds with tight protected airspace, low-altitude turning segments in obstacle departure procedures, and any close-in visual maneuvering in mountainous terrain. Turbine pilots encounter it in configuration changes and speed-controlled segments. Understanding that load factor and induced drag are tightly coupled, and that altitude control and airspeed control are not the same problem solved by the same input, is foundational aerodynamic literacy for any pilot operating beyond the traffic pattern.