✈️ Aviation Brief — Issue #8
Weekly insights for student pilots and the instructors who train them.
THIS WEEK'S TOPIC
PA.V.B — Power-Off Stalls (Private Pilot ACS)
### 1. ACS STANDARDS SUMMARY
For Private Pilot Airplane ACS Task PA.V.B (Power-Off Stalls), the examiner expects you to demonstrate instructional knowledge, risk management, and the ability to perform power-off stalls in straight-ahead and turning flight. Key elements include: selecting an entry altitude of at least 1,500 feet AGL; configuring the aircraft for straight-ahead or turning flight (flaps as specified, e.g., approach or landing setting); slowing to stall speed while maintaining coordination; recognizing and announcing when the stall is imminent; inducing a stall with smooth back-pressure on the yoke; and recovering promptly by releasing back-pressure to reduce angle of attack (AOA), applying full power if directed, leveling wings with coordinated controls, and returning to straight-and-level flight without excessive altitude loss (max 100 feet) or airspeed excursion (max 10 knots above recovery airspeed). The aircraft must remain coordinated throughout, with no secondary stall or spin entry.
### 2. THREE COMMON STUDENT MISTAKES
- **Inadequate coordination during entry and stall**: Students often allow the aircraft to slip or skid (ball out of center) due to uncoordinated rudder use, leading to an off-center break and potential spin entry—examiners watch this closely in turning stalls.
- **Delayed or improper recovery technique**: Many pilots forget to first release back-pressure to break the stall (lowering the nose), instead adding power prematurely or pulling harder, which worsens the stall or causes excessive altitude loss.
- **Poor airspeed and altitude management on setup**: Entering too fast or too low (below 1,500 feet AGL), resulting in rushed recoveries near the ground or exceeding the allowed altitude loss, which fails the task on checkrides.
### 3. CFI PRO TIP
Teach the "slow is smooth" mantra: Have students practice airspeed control first by configuring early (e.g., full flaps for landing stall), trimming for hands-off straight flight at clean approach speed (around 65 KIAS in a C-172), then gradually increase back-pressure while verbalizing "buffet... mush... stall!" This builds muscle memory for smooth entries and instant recognition, turning shaky stalls into confident, precise demos every time.
### 4. SAFETY SPOTLIGHT
Power-off stalls mimic real-world landing scenarios, where low power and high AOA are common killers—NTSB data shows stalls during landing approach or base-to-final turns caused 12% of fatal GA fixed-wing accidents from 2018-2022 (over 100 incidents). ASRS reports frequently cite uncoordinated turns with flaps extended leading to loss of control; always prioritize coordination and a go-around mindset to avoid these pattern disasters.
### 5. DID YOU KNOW
In a properly executed power-off stall recovery, you should break the stall *before* adding power—FAA guidance emphasizes reducing AOA first to avoid prop strike or excessive nose drop, a sequence that prevents over 80% of stall-spin accidents per NTSB reviews.
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