![HAESL engine bay](/sites/default/files/styles/crop_freeform/public/2024-05/1_bay_at_haesl_copy.jpeg?itok=yjpyI204)
50 Engine Bays
HAESL’s facility is set up with 50 engine bays that allow maintainers to disassemble and rebuild the repaired engine in the same bay.
![Trent engine at HAESL](/sites/default/files/styles/crop_freeform/public/2024-05/2_red_cloth_covering_trent_copy.jpeg?itok=UFHj1FQe)
Red Cloth Service
Red cloth sleeves protect Trent XWB fan blades in the shop.
![HAESL overhead crane](/sites/default/files/styles/crop_freeform/public/2024-05/3_overhead_crane_at_haesl_copy.jpeg?itok=-eh1TZKW)
Overhead Transport
Overhhead cranes transport engines to a bay.
![Trent engine rigging](/sites/default/files/styles/crop_freeform/public/2024-05/4_trent_700_rigging_copy.jpeg?itok=kvIcf2pG)
Rigging A Trent
Maintainers are rigging this Rolls-Royce Trent 700 so it’s ready to be tested.
![HAESL tool label](/sites/default/files/styles/crop_freeform/public/2024-05/5_xwb_tooling_copy.jpeg?itok=99781TUg)
Visual ID
Throughout HAESL, visual signs identify engine MRO—from electronic ones at each bay showing the work status to labels on the floor and on equipment.
![HAESL Trent XWB MRO](/sites/default/files/styles/crop_freeform/public/2024-05/6_phase_6_haesl_copy.jpeg?itok=7k5pedwQ)
Bigger Area For Big Engine
Phase 6 is the newest area of HAESL. This is where the larger Trent XWB is serviced.
![HAESL component repair](/sites/default/files/styles/crop_freeform/public/2024-05/9_parts_cleaning_and_repair_copy.jpeg?itok=WqHXJTXL)
In-House Repairs
Component repair occurs in Phase 5 of the building. After an engine is stripped, piece parts come here to be washed, inspected and repaired.
![Parts cleaning at HAESL](/sites/default/files/styles/crop_freeform/public/2024-05/10_galvatek_parts_cleaner_copy.jpeg?itok=Rcsnd0vD)
Automatic Cleaning
This Galvatek machine automatically cleans parts, which saves time. HAESL is expanding its capacity for this work.
![honeycomb repairs in an engine](/sites/default/files/styles/crop_freeform/public/2024-05/11_honeycomb_repair_copy.jpeg?itok=G8pQ4mGS)
Honeycomb Repairs
HAESL is a center of excellence for honeycomb removal and replacement.
![Trent XWB Blade-Tip Repairs](/sites/default/files/styles/crop_freeform/public/2024-05/8_xwb_blade_grinding_copy.jpeg?itok=ogSlPzyS)
Blade-Tip Grinding
A Trent XWB high-pressure compressor drum in the blade-tip grinding area of HAESL’s shop.
![HAESL uses Lean in engine shop](/sites/default/files/styles/crop_freeform/public/2024-05/12_continuous_improvement_copy.jpeg?itok=CS64cAuy)
Continuous Improvement
HAESL employs Lean, Six Sigma and other continuous improvement tools. It achieved a record 300 outputted in 2023 and strives to get to 360 engines in 2025.
![HP system](/sites/default/files/styles/crop_freeform/public/2024-05/14_high-pressure_system_xwb_copy.jpeg?itok=UWhc9GfR)
High-Pressure System
The high-pressure system of a Rolls-Royce XWB shown here. The HP system is the hottest area of the engine and is one of eight powerplant modules. The white parts are nozzle guide vanes.
![engine part balancing machine](/sites/default/files/styles/crop_freeform/public/2024-05/15_balancing_system_copy.jpeg?itok=3--97YXu)
Balance Work
HAESL has several balancing machines, which basically balances any engine part that spins in order to reduce vibration.
![Trent XWB at HAESL](/sites/default/files/styles/crop_freeform/public/2024-05/16_incoming_xwb_inton_shop_copy.jpeg?itok=zovy5hJk)
Next Up
An incoming Rolls-Royce XWB at HAESL in Hong Kong.
![engine borescope inspection](/sites/default/files/styles/crop_freeform/public/2024-05/17_borescope_inspection_copy.jpeg?itok=xMXWA2uA)
Engine Borescope Inspection
Mechanics performing a borescope inspection on this Trent 800.
![HAESL's engine test cell](/sites/default/files/styles/crop_freeform/public/2024-05/18_haesl_test_cell_copy.jpeg?itok=BqmHm-WW)
Engine Test Cell
HAESL has one engine test cell. An XWB, weighing 846 kg (1,865 lbs.), was in for tests during our visit.
![Trent XWB Module](/sites/default/files/styles/crop_freeform/public/2024-05/modular_work.jpg?itok=PtkXdMft)
Modular Work
A Rolls-Royce XWB low-pressure compressor case.
We toured Hong Kong Aero Services Ltd. (HAESL), a joint venture between the HAECO Group and Rolls-Royce, on April 25 as part of Aviation Week Network’s Aero-Engines Asia-Pacific. Here’s a look at HAESL, which provides MRO services for Trent engines as well as the RB211 at its facility in Hong Kong.