Mean Temp 12.1°C 53.78°F at Taegu
April 4, 1950 (Tuesday)
- A Gallup Poll was released showing that 37 percent of the Republicans surveyed were in favor of former General and World War II hero, Dwight D. Eisenhower, to be the party's nominee in the 1952 U.S. presidential election, compared to 17% for Robert A. Taft, 15% for Thomas E. Dewey, and 12% for Harold Stassen. In addition, 33 percent of independent voters said that they would vote for Eisenhower if he ran in 1952, a better showing than any potential Republican nominee had had in more than 20 years.
- The United States Navy issued a statement that it had seen evidence of "two or three probable foreign subs" off of Cape Mendocino in northern California, responding to reports of sightings of what were believed to be Soviet submarines in American territorial waters.
- The United Nations Trusteeship Council passed the "Statute on Jerusalem, declaring that the city should be considered international territory and a demilitarized zone. Neither Israel, which had control of West Jerusalem, or Jordan, which had East Jerusalem, agreed to let the United Nations send forces into the Holy City.
- Born: Christine Lahti, American actress (Chicago Hope), in Birmingham, Michigan; and Charles Bernstein, American poet, in New York City
It was pointed out, however, that before BuAer could proceed with the proposal, the Commandant would have to withdraw his previously submitted requirement for the 13- to 15-man helicopter as well as his support for the XH–16, both of which were seen as receiving favorable consideration . In matters of financing, the diversion of the remaining XH–16 Navy research and development funds was also viewed as meeting with CNO approval provided the Navy could be persuaded to terminate its support of the XH–16 project . 
The following week, the Navy's Air Readiness Division revised the operational requirements for an assault helicopter of the type specified in General Cates' letter of 12 January to reflect the recommendation of the conference of 28 March and transmitted it to BuAer for action. The specifications were contained in the Navy Research and Development Plan, Operational Requirement Number AO–17501 (Rotary Wing Assault Helicopter). The listed requirements were :
"develop a rotary wing assault craft capable o f transporting combat equipped troops (or the equivalent in combat equipment) from transport vessels to beachheads in support of landing operations.. ."
"that 20 combat equipped troop s be transported with the weight of each man computed at 225 pounds."
The assigned functions in AO–17501 for the helicopter were to
"operate from a CVE or larger carrier, or between carrier s and suitable equipped transport ships, carrying assault troops with their initial requirements in supply, communications and organic weapons... ." 
Two of the main features listed were that it be multi-engine equipped and of an overall dimension compatible with movement on the elevator of the CVE–105 class carrier. Although the operational requirement did not assign a model designation, the twin-engine assault helicopter would subsequently bear the Sikorsky S–56 trademark and the Navy designation of XHR2S–1* [H-19B]."
* Operational Requirement Number AO–17501 (Rotary Wing Assault Helicopter) may he referred to here - after in the text as the XHR2S–1.
- If I Knew You Were Comin’ I’d’ve Baked a Cake - Eileen Barton
- Dearie - The Guy Lombardo Orchestra (vocal: Kenny Gardner trio)
- Music, Music, Music - Teresa Brewer (2/18/2008 can't find)
- Long Gone Lonesome Blues - Hank Williams