Flight Controls, Stability, and Left-Turning Tendencies
- Episode: 4
- Version: 0.1.3
- Source verification: Publication-day FAA links and claimed-page mappings checked 2026-08-16; source-relevance review is recorded in the episode validation report.
In this episode
- Connect aileron, elevator, and rudder inputs to roll, pitch, and yaw about the airplane’s three axes.
- Explain why coordination means harmonizing coupled effects, not treating the controls as independent switches.
- Understand trim as relief of the pressure required to hold an established condition, including a desired airspeed.
- Connect flaps, leading-edge devices, spoilers, and trim to the changing airflow and force balance of a configuration.
- Separate static stability from dynamic stability and see how tail force, dihedral, and CG contribute to stability.
- Apply the four propeller-effect ideas as condition-dependent directional-control demands, not as fixed pedal settings.
Fact-check and source material
| Topic | Source type | Authoritative source | Locator | Verified |
|---|---|---|---|---|
| ACS anchor | FAA standard | Private Pilot ACS: left-turning tendencies | PA.IV.C.K6, printed p. 21 | 2026-08-16 |
| Primary controls | FAA guidance | PHAK: flight-control systems | Ch. 6, printed p. 6-2 | 2026-08-16 |
| Ailerons and adverse yaw | FAA guidance | PHAK: ailerons and adverse yaw | Ch. 6, printed p. 6-3 | 2026-08-16 |
| Coordinated controls | FAA guidance | PHAK: coordinated-turn control roles | Ch. 6, printed p. 6-4 | 2026-08-16 |
| Elevator | FAA guidance | PHAK: elevator | Ch. 6, printed p. 6-5 | 2026-08-16 |
| Rudder | FAA guidance | PHAK: rudder effectiveness | Ch. 6, printed p. 6-8 | 2026-08-16 |
| Flaps and leading-edge devices | FAA guidance | PHAK: flaps and leading-edge devices | Ch. 6, printed p. 6-9 | 2026-08-16 |
| Spoilers | FAA guidance | PHAK: spoilers | Ch. 6, printed p. 6-10 | 2026-08-16 |
| Leading-edge device functions | FAA guidance | PHAK: slats, leading-edge flaps, and cuffs | Ch. 6, printed p. 6-10 | 2026-08-16 |
| Trim setup | FAA guidance | PHAK: trim systems and trim tabs | Ch. 6, printed p. 6-10 | 2026-08-16 |
| Retrimming | FAA guidance | PHAK: retrimming for a new condition | Ch. 6, printed p. 6-11 | 2026-08-16 |
| Static stability | FAA guidance | PHAK: stability and static stability | Ch. 5, printed p. 5-14 | 2026-08-16 |
| Dynamic stability and CG | FAA guidance | PHAK: dynamic and longitudinal stability | Ch. 5, printed p. 5-15 | 2026-08-16 |
| Longitudinal stability | FAA guidance | PHAK: longitudinal stability and tail force | Ch. 5, printed pp. 5-16–5-17 | 2026-08-16 |
| Power changes and pitch stability | FAA guidance | PHAK: longitudinal stability and power changes | Ch. 5, printed p. 5-17 | 2026-08-16 |
| Lateral-stability definition | FAA guidance | PHAK: lateral stability and rolling | Ch. 5, printed p. 5-17 | 2026-08-16 |
| Lateral stability | FAA guidance | PHAK: dihedral and lateral stability | Ch. 5, printed p. 5-18 | 2026-08-16 |
| Directional stability | FAA guidance | PHAK: directional stability and the vertical axis | Ch. 5, printed p. 5-19 | 2026-08-16 |
| Torque and spiraling slipstream | FAA guidance | PHAK: torque reaction and corkscrew effect | Ch. 5, printed p. 5-31 | 2026-08-16 |
| Gyroscopic action and P-factor | FAA guidance | PHAK: gyroscopic action and asymmetric loading | Ch. 5, printed p. 5-32 | 2026-08-16 |
Correction status
This is a study resource, not flight instruction. Corrections and source updates are recorded in the episode production log before a revised version is published. Submit a source correction through the repository issue form or email [email protected]. Do not send credentials, private documents, or personal flight information.