Test your heli knowledge – The Robinson R44

See how much you know about the R44, the world’s most commonly flown helicopter .

The quiz is multiple choice and you can take it as often as you like. Results are not shared but you have to provide an email address. These are quite advanced!

To see how you scored, click the FINISH button at the bottom of the page. Have fun!

Results

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#1. What is the recommended torque value for the main rotor blade retention nuts on the Robinson R44?

30-35 ft-lbs

30-35 ft-lbs

50-60 ft-lbs

50-60 ft-lbs

70-75 ft-lbs

70-75 ft-lbs

#2. During a 100-hour inspection, what is the required procedure for inspecting the Robinson R44's main rotor gearbox chip detectors?

Clean and inspect for metal particles

Clean and inspect for metal particles

Replace with new chip detectors

Replace with new chip detectors

Perform a magnetic particle inspection

Perform a magnetic particle inspection

#3. What is the maximum allowable play in the tail rotor pitch control mechanism before maintenance is required?

0.01 inches

0.01 inches

0.05 inches

0.05 inches

0.10 inches

0.10 inches

#4. How often should the hydraulic system fluid be drained and replaced in the Robinson R44?

Every 300 flight hours

Every 300 flight hours

Every 500 flight hours

Every 500 flight hours

Every 1000 flight hours

Every 1000 flight hours

#5. What is the purpose of the clutch actuator lower bearing lubrication, and how frequently should it be performed?

To reduce wear and prevent corrosion; every 100 hours

To reduce wear and prevent corrosion; every 100 hours

To ensure smooth operation of the clutch; every 200 hours

To ensure smooth operation of the clutch; every 200 hours

To maintain proper tension on the drive belts; every 500 hours

To maintain proper tension on the drive belts; every 500 hours

#6. What type of hydraulic fluid is approved for use in the Robinson R44's hydraulic system?

MIL-H-5606

MIL-H-5606

MIL-H-83282

MIL-H-83282

MIL-PRF-87257

MIL-PRF-87257

#7. During the main rotor gearbox drain and flush procedure, what is the recommended method for ensuring all old fluid is removed?

Use a vacuum pump to extract all fluid

Use a vacuum pump to extract all fluid

Allow the gearbox to drain overnight

Allow the gearbox to drain overnight

Flush with clean hydraulic fluid until it runs clear

Flush with clean hydraulic fluid until it runs clear

#8. What is the correct procedure for jacking the Robinson R44 for maintenance purposes?

Use the designated jack points on the skids

Use the designated jack points on the skids

Jack from the tail boom and nose

Jack from the tail boom and nose

Use the main rotor mast as the lifting point

Use the main rotor mast as the lifting point

#9. How should the Robinson R44 be prepared for long-term storage to prevent corrosion and degradation of components?

Store in a climate-controlled hangar with periodic engine runs

Store in a climate-controlled hangar with periodic engine runs

Apply a protective coating to all exposed surfaces and drain all fluids

Apply a protective coating to all exposed surfaces and drain all fluids

Cover with a tarpaulin and lubricate all moving parts

Cover with a tarpaulin and lubricate all moving parts

#10. What is the required inspection interval for the tail rotor gearbox according to the Robinson R44 maintenance manual?

Every 100 flight hours

Every 100 flight hours

Every 250 flight hours

Every 250 flight hours

Every 500 flight hours

Every 500 flight hours

Finish