Service difficulty report · Control Rod · Robsin R44

Difficulty date
August 18, 2024
Submitted
August 22, 2024
Operation
Air carrier
Aircraft
N740RH
Make and model
Robsin R44
Aircraft serial
2559
Aircraft time
4,737 hours
Engine
Lyc O540F1B5
Engine time
2,695 hours
Part
Control Rod
Part number
C12117
Condition
Deformed
Location
Tail Rotor
Part time
339 hours
Stage of operation
NR
How discovered
O
Nature of condition
F
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING ATTEMPTED ROTOR ENGAGEMENT FOLLOWING ENGINE START, TAIL ROTOR PEDALS DEFLECTED FULL LEFT. ENGINE WAS IMMEDIATELY SHUT DOWN AFTER LESS THAN 45 DEGREES OF ROTOR MOVEMENT. INSPECTION REVEALED CONTACT BETWEEN AFT FLEX PLATE AND TAIL ROTOR CONTROL ROD. FURTHER INSPECTION AND ROOT CAUSE PENDING.