Flying the Rolls Royce B747 Test Bed - An Experimental Flight with 100% SAF - YouTube
Rolls-Royce North America Boeing 747-200 Trent 1000 engine test-bed climbing out after take-off with undercarriage retracting. Part of the special Boe Stock Photo - Alamy
Boeing 747-267B (N787RR) Aircraft Pictures & Photos - AirTeamImages.com
Qantas 747-400 gets a new life as a Rolls-Royce test bed - Airline Ratings
Rolls-Royce Boeing 747-200 - Features - Infinite Flight Community