The National Investigations Committee on Aerial Phenomena (Nicap)

Code	Date	Location	Witness	Description
M	1-7-48	Ft. Knox, Ky.	Capt. Thomas Mantell, Air National Guard (A.N.G.); many on ground	Pilot killed in crash of F-51 while chasing "huge . . . metallic" circular object. [8]
P	7-48	Pasco, Wash.	Don Newman, 6-year USAF veteran of WW II and Korean War	Disc diving and climbing.
AL	7-23-48	nr Montgomery, Ala.	Capt. C.S. Chiles, F/O J.B. Whitted, Eastern Airlines	Cigar with lights like portholes approached head-on, accelerated, climbed away.
M	10-1-48	Fargo, N.D.	Lt. George F. Gorman, A.N.G.; 3 others	"Dogfight" with disc; UFO outsped F-51. [9]
P	1-1-49	Jackson, Miss.	Tom Rush	Cigar crossed path of plane, accelerated rapidly.
M	7-3-49	Longview, Wash.	Cmdr. M.B. Taylor, USN; many others at air show	Round UFO wobbling on axis, sharp maneuvers. [Section IV]
M	11-3-49	nr Baja, Calif.	Capt. William H. Donnelly, USAFR	Four discs which cavorted in an "astounding manner. [Section III]
AL	3-8-50	Dayton, Ohio	TWA Captains W.H. Kerr, D.W. Miller, M.H. Rabeneck; plus USAF pilots	Round UFO tracked on radar, observed from ground and air, climbed away through clouds. [Section VIII, Radar]
P	3-18-50	nr Bradford, Ill.	Robert Fisher and family	Oval UFO, self-illuminated, sped past plane at estimated 600 to 1,000 mph.
AL	3-20-50	nr Little Rock, Ark.	Capt. Jack Adams, F/O G.W. Anderson, Jr.	Disc with apparent "portholes" flew above airliner in arc. [Section II]
P	3-26-50	nr Washington, D.C.	B.A. Totten, former USAF aircraft inspector	Disc flew below plane; when pilot dove at it, UFO "zoomed up into overcast." [10]
AL	4-27-50	nr Goshen, Ind.	Capt. Robert Adickes, Capt. Robert F. Manning, TWA; passengers	Disc paced plane, sped away when pursued.
AL	5-29-50	nr Washington D.C.	Capt. Willis T. Sperry, F/O Bill Gates, American Airlines	Elliptical object circled plane, raced away.
AL	6-24-50	California desert	F/O David Stewart, United Airlines	Cigar-shaped object paced plane for 20 miles. [11]
M	6-24-50	nr Daggett, Calif.	Navy transport pilot	Cigar-shaped object above desert [Section IV]
M	7-11-50	nr Osceola, Ark.	Lt(jg) J.W. Martin; Enlisted Pilot R.E. Moore, USN	Domed circular UFO passed in front of two Navy planes [confirmed by radar]. [Section IV]
AL	10-5-50	nr San Fernando, Calif.	Capt. Cecil Hardin, F/O Jack Conroy, California Central Airlines	UFO with body lights came head-on at plane, dipped down and passed below; "It appeared to be a wing," Captain Hardin said. "It had no fuselage." Bands of blue light were visible across its width. [12]
P	11-27-50	Evansville, Wisc.	Bill Blair, commercial pilot & flight instructor	Six elliptical objects in loose echelon formation, made sound similar to helicopters. Appeared to be at about 10,000 feet, travelling about 500 mph. [13]
AL	12-27-50	nr Bradford, Ill.	Capt. Art Shutts, TWA	Light source, making erratic and violent maneuvers.
AL	1-20-51	Sioux City, Iowa	Capt. Lawrence Vinther, F/O James F. Bachmeier, Mid-Continent Airlines; plus control tower operators.	Cigar with bright body light approached, reversed direction, climbed away.
AL	2-19-51	Mt. Kilimanjaro, Africa	Capt. Jack Bicknell, Radio Officer D.W. Merrifield, East African Airways; plus 9 passengers	Cigar-shaped object with vertical bands hovered for long period, ascended vertically at high speed. [Section X]
AL	5-22-51	nr Dodge City, Kans.	Capt. W.R. Hunt, American Airlines	Blue-white star-like object gyrated around airliner, "moved backward and forward, then up and down" and finally dove below plane and sped away. [14]
P	8-11-51	Portland, Ore.	R.O. Dodge, former US FO 47 pilot	Three disc-like UFOs in formation. [15]