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https://cordis.europa.eu/programme/id/FP7_SP1-JTI-FCH.2010.1.5 Auxiliary Power Units for Transportation Applications | Programme | FP7 | CORDIS | European... auxiliary power units for transportation applications programme cordis https://cordis.europa.eu/programme/id/FP7_SP1-JTI-FCH.2013.1.4 Field demonstration of auxiliary power units for transport applications | Programme | FP7 | CORDIS... auxiliary power units https://www.honeywell.com/us/en/press/2021/1/honeywell-sichuan-airlines-ink-historic-deal-on-auxiliary-power-units Honeywell, Sichuan Airlines Ink Historic Deal on Auxiliary Power Units This is the largest APU retrofit deal in Honeywell's history. The 131-9A APU will help Sichuan Airlines reduce flight delays and cancellations. sichuan airlines honeywell ink historic deal