✈️ When the Airspeed Disappears: A Real Approach That Became a Test of Control

 

🧭 Introduction — The Moment It Started

The coastline was clearly visible.

Approaching from the south, the aircraft descended toward the runway in Maricá, near Rio de Janeiro. The conditions were typical: warm air, good visibility, light winds coming off the ocean.

It was supposed to be a routine approach.

Then the airspeed needle moved.

At first, it was subtle — just a small fluctuation.
Then it stopped.
Moments later, it jumped again… but something was wrong.

Inside the cockpit, a quiet realization set in:

👉 The airspeed was no longer reliable.

And with that, a normal approach instantly became a high-risk situation.

⚠️ The Problem With Losing Airspeed

The airspeed indicator is not just another instrument.

It is a primary reference for:

• Energy management
• Approach stability
• Stall margin awareness

When it becomes unreliable, the pilot is left without one of the most critical pieces of information in flight.

👉 This condition is known as:

Unreliable Airspeed

And it has been a contributing factor in multiple loss-of-control accidents worldwide.

🧠 What Happens in the Cockpit

What makes this situation dangerous is not only the failure itself —
it is what happens next.

In a matter of seconds, the pilot must deal with:

• Conflicting instrument indications
• Rising workload
• Pressure to continue the approach
• Decreasing margin for error

👉 The brain tries to solve the problem.

But the problem cannot be solved by the instrument anymore.

🔄 The Critical Trap

One of the most dangerous reactions is instinctive:

👉 Trying to “fix” the airspeed.

Pilots may attempt to:

• Adjust pitch repeatedly
• Chase fluctuating indications
• Overcorrect control inputs

This creates a new problem:

👉 Loss of flight path control.

And once that begins, recovery becomes increasingly difficult.

🛫 Back to Fundamentals

In situations like this, there is only one correct response:

✔ Fly known pitch and power settings

✔ Trust attitude, not airspeed

✔ Monitor aircraft behavior

✔ Maintain a stable descent profile

👉 The principle is simple — but critical:

Fly the airplane, not the instrument.

🇧🇷 Why This Scenario Was More Challenging

The approach into Maricá adds complexity:

• Coastal environment with limited visual contrast
• Water surface affecting depth perception
• Potential wind variability

👉 When combined with unreliable airspeed:

• Situational awareness decreases
• Workload increases
• The safety margin shrinks rapidly

This is where small errors can escalate.

📊 The Chain of Events

Events like this follow a predictable pattern:

1. Instrument anomaly
2. Pilot uncertainty
3. Increased workload
4. Incorrect control inputs
5. Loss of control

👉 The key to safety is breaking this chain early.

🛑 What Prevents Accidents

Pilots who successfully manage unreliable airspeed situations rely on:

✔ Strong understanding of pitch-and-power relationships

✔ Training for instrument failure scenarios

✔ Discipline under pressure

✔ Immediate shift away from faulty indications

👉 In other words:

Preparation replaces panic.

📌 Conclusion — The Real Lesson

That day in Maricá, the aircraft did not lose control because an instrument failed.

👉 It became vulnerable because the situation demanded immediate adaptation.

And that is the real lesson.

In aviation:

Instruments can fail.
Situational awareness cannot.

📚 References

• Federal Aviation Administration (FAA) – Pilot’s Handbook of Aeronautical Knowledge
• ICAO – Annex 6 (Operation of Aircraft)
• ICAO – Human Factors in Aviation
• Aviation Safety Reports – Pitot-Static Failures

Marcuss Silva Reis – Pilot, aviation expert, and instructor with decades of experience in flight safety and operational analysis.