PARIS (Reuters) - Aircraft leasing may face its biggest shake-up in almost a decade, as top two players AerCap and General Electric’s GECAS discuss a tie-up, financial sources said. The combination would create an industry titan with 2,608 planes under ownership or management or on order - compared with 856 at next-ranked Avolon’s, according data from aviation consulting firm IBA. Here is the global ranking of aircraft lessors by fleet: 1) AerCap: 1,080 aircraft owned or managed, 289 on order; Total 1,369 2) GECAS: 984 aircraft owned or managed, 255 on order; Total 1,239 3) Avolon: 593 aircraft owned or managed, 263 on order; Total 856 4) Air Lease Corp: 410 aircraft owned or managed, 365 on order; Total 775 5) SMBC Aviation Capital: 469 aircraft owned or managed, 230 on order; Total 699 6) Nordic Aviation Capital: 504 aircraft owned or managed, 79 on order; Total 583 7) BBAM: 526 aircraft owned or managed, 0 on order; Total 526 8) BOC Aviation: 392 aircraft owned or managed, 119 on order; Total 511 9) ICBC Leasing: 380 aircraft owned or managed, 123 on order; Total 503 10) Aviation Capital Group: 301 aircraft owned or managed, 65 on order; Total 366 (Source: IBA)