Buttigieg, Pete (4 de junio de 2023). «14 CFR Part 91.211 Supplemental oxygen». ecfr.gov. National Archives. Consultado el 27 de junio de 2023. «14 CFR Part 91.211(b)(1)(ii) & (b)(2) using an oxygen mask [&] shall put on and use an oxygen mask».
(USDA) Forest Service. George Washington National Forest Hiking Map (South Half) [mapa], 1/2"=1 mi. Cartografía por Regional Office R-5 Atlanta USGS and USFS Topographic Quadrangles furnished by the Dept of the Interior National Park Services Polyconic Projection. (1985) Consultado el 2023-06-24.
Gerhardt, Adam; Mitchell, Mitch A.; Tsai, Helen; Aresenio, Richard J.; Gibson, Kurt; Studtmann, David; Rushworth, Randolph W. (21 de junio de 2023), Aviation Investigation Preliminary Report [Informe preliminar de investigación de aviación](PDF)(en inglés), Montebello, Virginia: NTSB, p. 3, «According to recent maintenance inspection records, the airplane as of May 2023 was equipped with a cockpit voice recorder (CVR), however, at the time of this publication, a CVR had not been located. The airplane was not equipped with a flight data recorder, nor was it required to be.».
