Description of the engines:
Number of Engines: 1
Manufacturer / Model: Lycoming IO-540-AE1A5
Total Time: approx. 1,804 h
Time Since Overhaul: approx. 20 h
Serial Number: TBC
Type Certificate: EASA.IM.R.121
Passenger Capacity: 3 pilot
Engine Description / Details
The Lycoming IO-540-AE1A5 was overhauled in July 2026. Release to Service was issued at 1,784.37 h on 16
July 2026. The engine has therefore accumulated only approximately 20 operating hours since overhaul.
TBO: 2,000 h / 12 years
TBO following overhaul: 3,784.37 h or July 2038.
Avionics:
TBC details to follow.
Exterior:
TBC details to follow. See pictures.
Interior:
TBC details to follow. See pictures.
Status of the inspection:'
The required maintenance actions and inspections following the engine overhaul are documented in the aircraft operating-time overview.
Maintenance Status
The helicopter underwent extensive maintenance in July 2026. The 100-hour / annual inspection was carried out
on 16 July 2026 at 1,784.37 h.
Current time: approx. 1,804 h
Key upcoming maintenance intervals according to the operating-time overview:
100-hour / annual inspection: due at 1,884.37 h or July 2027
Various 12-year component inspections: September 2028
2,200-hour inspection: due at 2,200 h
Main Rotor Blades: approx. 1,717 h remaining, calendar limit April 2028
Tail Rotor Blades: approx. 2,116 h remaining, calendar limit February 2037
Engine: approx. 1,980 h remaining after overhaul, or just under 12 years until the next TBO.
Other comments:
Remarks / Additional Information
Very interesting Robinson R44 II with a recently overhauled Lycoming IO-540-AE1A5.
The engine was overhauled in July 2026 and has accumulated only approximately 20 operating hours since
Release to Service at 1,784.37 h.
The operating-time and maintenance overview dated 21 August 2026 documents the current operating times and
remaining lives of the relevant components.
The Main Rotor Blades were installed in 2016 and have approximately 1,717 h remaining, with a calendar limit until
April 2028.
The Tail Rotor Blades were installed in 2025 and have approximately 2,116 h remaining, with a calendar limit until
February 2037.
Engine overhaul 2026 only approx. 20 h since Release to Service.
