CFRN Aviation Safety and Survival 3

Question 1

In helicopter operations, what is the 'dead man's curve' (height-velocity diagram)?

Accepted Answer

A combination of altitude and airspeed from which a safe autorotation is not possible

Answer

The dead man's curve identifies altitude-airspeed combinations where insufficient time or altitude exists for successful autorotation if engine failure occurs.

Question 2

A CFRN is caring for a ventilated patient at 8,000 feet MSL. How should the endotracheal tube cuff be managed during ascent?

Accepted Answer

Replace air in the cuff with saline or use a pressure-regulated cuff

Answer

Air in the ETT cuff expands at altitude, risking tracheal injury; filling with saline or using a pressure-regulated cuff prevents dangerous over-inflation.

Question 3

When approaching a helicopter in a field landing zone, which path is the safest approach direction?

Accepted Answer

From the side, within the pilot's field of vision, staying in the 3 o'clock or 9 o'clock position

Answer

Approaching from the 3 or 9 o'clock position keeps you in the pilot's field of vision and away from the invisible, deadly tail rotor.

Question 4

Which weather condition most commonly contributes to helicopter EMS accidents?

Accepted Answer

Inadvertent flight into instrument meteorological conditions (IIMC)

Answer

IIMC — where a VFR pilot inadvertently enters clouds or fog — is the most lethal weather-related cause of HEMS accidents.

Question 5

What is the purpose of the crew resource management (CRM) principle of 'assertiveness' in air medical transport?

Accepted Answer

To empower any crew member to voice safety concerns regardless of rank

Answer

CRM assertiveness means any crew member — including the nurse — can and must speak up about safety concerns, regardless of the pilot's authority.

CFRN - Certified Flight Registered Nurse Practice Test

CFRN - Certified Flight Registered Nurse Practice Test

CFRN Aviation Safety and Survival 3