Pratt & Whitney

PW4000 94-Inch

The Pinnacle of Power and Precision in Aviation

The PW4000 94-inch engine family represents the forefront of high-thrust, wide-body aircraft engines. Developed by Pratt & Whitney, a pioneer in aviation technology, this series boasts a thrust range of 52,000 to 62,000 lb, affirming its position as a powerhouse in the industry. The PW4000 94-inch engines are renowned for their application across a diverse array of aircraft, including the Boeing 747, 767, MD-11, Airbus A300, and A310. With approval for 180-minute Extended-range Twin-engine Operations (ETOPS), these engines offer unparalleled operational flexibility and reliability, backed by advanced technologies like single-crystal superalloy materials and Full-Authority Digital Electronic Control (FADEC), which contribute to their superior fuel economy and dependability.

Pem-Air is pleased to offer specialized Engine Maintenance Services for the PW4000 94-inch engine variants:

PW4056/62/62A

Boeing 747, 767

PW4052/56/60/62/62A

Boeing 747, 767

PW4460/62

McDonnell Douglas MD-11

Our team of certified MRO professionals brings a wealth of experience and technical proficiency to every aspect of PW4000 engine maintenance. From preventative care to comprehensive overhauls, our technicians ensure meticulous attention to detail, optimizing engine performance and extending operational life. Collaborating closely with our clients, SkyTech Solutions develops tailored service programs that prioritize minimal downtime, cost efficiency, and the enhancement of engine value, solidifying the PW4000 94-inch engine's legacy as a leader in aviation excellence.

Light Maintenance (Minimal Penetration):

Boro-blending/Borescope blade blending for minor blade imperfections
Variable Stator Vanes (VSV)/Variable Bleed Valves (VBV), static rigging
Engine preservations
Borescope, digital measurement, and Non-Destructive Testing (NDT) Inspection
Troubleshooting Engine Performance

Hospital Visit (Check/Repair):

HPC repair/Top Case repair
Decoking of oil lines
Low-Pressure Turbine (LPT), Booster, High-Pressure Turbine (HPT) module changes

Performance Restoration (Gas Path):

HPT shroud grinding and refurbishing, repairing shroud components
High-Pressure Compressor (HPC) high-speed grinding
HPT high speed grinding
Low-Pressure Compressor (LPC)/HPC/HPT/LPT rotor balancing, dynamic and static
Moment weighing of blades, 1+2 HPC, Stage 1+2 HPT, All LPT Blades
Comprehensive vibration/trim balance assessments.

Full Restoration/Overhaul (All Modules):

Main Gearbox, Accessory Gearbox (AGB), and Transfer Gearbox (TGB) replacement or overhaul
VSV stage to stage rigging
VBV doors and actuator rigging
Full Quick Engine Change (QEC) swaps, conversions
Fan disk and blade replacement
Line-Replaceable Units (LRU) replacement
Full module repairs