Honeywell Auxiliary Power Unit (APU) reliable performance exceeds 10,000 hours

Honeywell (NYSE: HON) announced on June 15 that the company's 131-9A auxiliary power unit (APU) has an average interval of over 10,000 hours between unplanned maintenance events, which is compared with similar size APU products The 70% extension has enabled the airline to obtain considerable cost savings and aircraft availability benefits.

The 131-9A APU is the most widely used auxiliary power unit in single-aisle commercial aircraft. Currently, Honeywell has more than 1,700 auxiliary power units in use for new and improved aircraft, as well as for Airbus A318, A319, A320 and A321 platforms. An auxiliary power unit is a small gas-powered turbine engine that can provide bleed air for starting the main engine and power for the cockpit and galley system.

John Bolton, President of Air Transportation, Honeywell Aerospace Division, said: "Honeywell APU has implemented reduction and exemption improvements, which reduced fuel consumption by 5%, further reducing emissions and APU life cycle. The total cost of ownership within, so that each aircraft can save more than 10,000 US dollars in operating costs per year. Compared with other APU, Honeywell APU also has a 10% energy advantage, can complete the cabin cooling or heating two minutes ahead of time jobs."

In addition, Honeywell 131-9A is also easy to maintain, requiring only nine common hand tools to complete line maintenance. Replaceable line unit (LRU) replacement takes less than 12 minutes, and engine replacement takes less than 30 minutes.

- Honeywell 131-9A APU reliability

Bolden said: "This design can not only save maintenance costs, but also complete aircraft deployment more quickly and ensure the availability of aircraft to airlines."

Due to the simplified maintenance process, the on-board maintenance time of the 131-9A has been reduced by 36% compared to similar APUs.

"Since the 131-9A was launched in 1998, Honeywell has continuously used the latest technology and engineering achievements to improve it, further improve its industry-leading reliability, reduce operating costs, and improve fuel efficiency." Honeywell Aviation Said Steven Chung, Vice President of the APU Product Line of the Aerospace Department.

Honeywell 131-9A has obtained the Extended Twin-Engine Operations license and can start and complete the flight at 41,000 feet, with a density of 52 pounds per square inch for the environmental control system and main engine start Provides 154 pounds of air per minute. The generator can supply 90 kW of full-load rated continuous power, has a maximum height of 35,000 feet, and weighs only 354 pounds. Before takeoff, the 131-9A APU will provide power to the aircraft's electrical and environmental systems. After flying into the air, the 131-9A can still provide enough power for these systems in an emergency.