SFAR 73

Question 1

General Subject Areas

Answer 1

• Energy Management
• Mast Bumping
• Low Rotor RPM (Blade Stall)
• Low G Hazards
• Rotor RPM Decay

Question 2

R-22 PIC Requirements

Answer 2

CONDITION 1
- 20hrs dual instruction in R-22
- Enhanced training in autorotation procedures
- Engine/rotor rpm control w/out governor
- Low rotor rpm recognition and recovery
- Effects of Low g and proper recover
- CFI endorsement (valid for 90 days)
CONDITION 2
- Have Rotorcraft category and helicopter class ratings
- 200hrs in helicopters
- At least 50 in R-22
CONDITION 3
- Have Rotorcraft category and helicopter class ratings
- 10hrs dual instruction in R-22
- Enhanced training in autorotation procedures
- Engine/rotor rpm control w/out governor
- Low rotor rpm recognition and recovery
- Effects of Low g and proper recover
- CFI endoresement (valid for 12 months)

Question 3

R-44 PIC Requirements

Answer 3

CONDITION 1
- 20hrs dual instruction in R-22
- Enhanced training in autorotation procedures
- Engine/rotor rpm control w/out governor
- Low rotor rpm recognition and recovery
- Effects of Low g and proper recover
- CFI endorsement (valid for 90 days)
CONDITION 2
- Have Rotorcraft category and helicopter class ratings
- 200hrs in helicopters
- At least 50hrs in R-44
- 25hrs in R-22 may credit to R-44 50hrs
CONDITION 3
- Have Rotorcraft category and helicopter class ratings
- 10hrs dual instruction in any Robinson Helicopter
- At least 5hrs in R-44 specifically
- Enhanced training in autorotation procedures
- Engine/rotor rpm control w/out governor
- Low rotor rpm recognition and recovery
- Effects of Low g and proper recover
- CFI endoresement (Valid for 12 months)

Question 4

CFI SFAR73 Instructor Requirements

Answer 4

• 200hrs in helicopters
• 50hrs in EACH Robinson helicopter
  
  • 25hrs R-22 counts for R-44
• Endorsement from FAA Aviation Safety Inspector or DPE
• Completed training in R-22, R-44 or both in:
  
  • Enhanced training in autorotation procedures
  • Engine/rotor rpm control w/out governor
  • Low rotor rpm recognition and recovery
  • Effects of Low g and proper recover

Question 5

Flight Review Conditions

Answer 5

Flight reviews are only valid for SPECIFIC AIRCRAFT review was conducted in.
- R-22 review is NOT valid for R-44 and vice versa

Question 6

Mast Bumping

Answer 6

When the rotor system exceeds the flapping limits, causing the rotor hub to contact the mast, resulting in mast damage or separation of the main rotor system.

Causes
- Low G

Question 7

Low G

Answer 7

When the rotor disk is no longer supporting the weight of the helicopter during flight.

• Abrupt fore cyclic, esp from S&L or a climb
  
  • Turbulence induced inputs

Symptoms

• Weightlessness
• Uncontrolled roll to the right

Correction

• Immediate, smooth aft cyclic to reload rotors
• Once stable, roll to level attitude