192
UNITED STATES NAVAL AVIATION 1910-1995
1951-Continued
Arming F9Fs 20mm guns 1030116
12 June Two PB4Y-2s of VP-772 were transferred
from NAS Atsugi, Japan, to Pusan, South Korea, to fly
flare dropping missions for Marine Corps night attack
aircraft. The success of the operation, which was con-
ducted as an experiment, was such that the practice of
assigning specially equipped patrol aircraft for this
purpose was continued.
17 June Postwar research on high-speed, jet-pro-
pelled seaplanes had progressed to the point that a
contract was issued to Convair for development of a
delta-winged, hydroski-equipped research seaplane
with fighter characteristics. Through subsequent
redesign, the aircraft became the XF2Y-l.
18 June
The ZPN-l airship made its first flight.
1 July The Naval Air Turbine Test Station was estab-
lished at Trenton, N.J. Its mission was test and evalua-
tion of turbojet, turboprop, ramjet, pulsejet engines
and accessories and components.
10 July The UN military representatives, headed by
Vice Admiral C. Turner Joy, arrived at Kaesong, Korea,
for armistice discussions with Communist leaders.
Thus began many trying months in which negotiations
were alternately suspended and reopened while hos-
tilities continued unabated.
7 August The McDonnell XF3H-l Demon, an exper-
imental model of a Navy shipboard jet fighter, com-
pleted its first flight at St. Louis, Mo.
7 August A Viking high-altitude sounding rocket,
developed by the Naval Research Laboratory and
launched at the White Sands Proving Grounds, N.M.,
achieved an altitude of 135.3 miles.
7 August The Navy's sonic research plane, the D-
558-2 Skyrocket, piloted by Douglas test pilot William
B. Bridgeman, set an unofficial world speed record of
1,238 mph over Muroc, Calif.
8 August The Secretary of the Navy established the
classification AVM for Auxiliaries, Guided Missiles
Ships, and changed the designation of Norton Sound
from AV 11 to AVM 1.
15 August The Douglas Skyrocket D-558-2, the
Navy's sonic research plane, piloted by William B.
Bridgeman, reached 79,494 feet over Muroc, Calif., the
highest altitude achieved by man to that date.
23 August Essex, veteran of World War II and first
of the postwar converted carriers to go into action,
joined Task Force 77 off the east coast of Korea and
launched her planes in combat. On this strike, F2H-2
Banshees flown by pilots of VF-I72 went into action
for the first time.
25 August F2H Banshees and F9F Panthers from
Essex, operating with Task Force 77 in the Sea of
Japan, provided fighter escort for Air Force B-29s on a
high altitude bombing mission against the marshalling
yards at Rashin on the extreme northeast border of
Korea.
2 September HMR-161, equipped with HRS-ls,
arrived Pusan, South Korea, aboard Sitkoh Bay and
flew ashore prepared to perform transport, assault,

10