Technical metadata for common files named 071.jpg often shows: Digital Technology Inc.. Resolution: 72 dpi with an aperture of ƒ/2.8.
Wikimedia Commons hosts an Aviation Accident Report image specifically titled after Flight 71. Digital Metadata for 071.jpg 071.jpg
The pilot, despite being warned by an instructor that he was not qualified for that specific high-performance model, convinced the owner to let him fly it solo. Technical metadata for common files named 071