H.E.R.O.S. Inc.

H.E.R.O.S. Inc. is a family owned engine shop in Chandler, Arizona. The name stands for Helicopter Engine Repair Overhaul Services. The shop trades as PAG Engine Services and is part of Precision Aviation Group. It is a factory authorized Rolls Royce M250 and RR 300 Authorized Maintenance, Repair and Overhaul Center.

The shop focuses on the M250 gas turbine engine. It repairs and overhauls M250 series engines and lists the engine series it rates for this work. These are the M250-B17, M250-C18, M250-C20, M250-C30 excluding the C30R and 3D versions, T63-A-720, M250-C40B, M250-C47B, M250-C47B/8 and M250-C47/M.

The company describes itself as an independent FAA and EASA authorized MRO facility. Parts can be supplied as new factory, airworthy or PMA material. The site says each engine component is disassembled, cleaned, inspected, assembled and tested to meet or surpass manufacturers' specifications.

The test cell runs functional and performance testing for M250 series engines. Testing covers diagnostics, analysis, troubleshooting and third party testing. The machine shop works with CNC 2.5 axis and 3 axis mills, a horizontal lathe, two jig grinders and a Mitutoyo CMM. It machines gearbox housings and covers, diffuser assemblies, oil sump covers, bleed valves, oil filter housings, scrolls, combustors and fuel pump bypass parts.

The accessory shop repairs and overhauls engine accessories. Each accessory is bench tested on one of seven test benches, which cover oil pumps, fuel pumps, power turbine governors, bleed valves, fuel controls and fuel nozzles. The shop offers flat rate overhaul and exchange options for eligible core part numbers.

The shop serves law enforcement, agriculture and civilian helicopter operators. The website describes the M250 as widely used in agricultural and civilian applications. The company says its customers can count on support and that its technicians are trained and experienced.

H.E.R.O.S. is part of Precision Aviation Group, which was founded in 1993. The group reports 26 FAA approved repair stations and 28 locations. The site says PAG is one of only 11 companies outside OEMs to hold unlimited FAA ratings, and it offers 24/7 AOG support.

Services

• Rolls Royce M250 engine overhaul
• Engine test cell
• Machine shop
• Accessory shop
• Flat rate overhaul and exchange
• Third party engine testing
• New factory, airworthy and PMA parts
• AOG support